Author Topic: Air con-to fix or not to fix  (Read 27910 times)

Conor

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Air con-to fix or not to fix
« on: May 26, 2013, 10:40:19 »
I am a new member to the SL group and am intending to purchase a 1971 280SL (usa model) .It is in good running condition but the air conditioner doesn't work.Since I live in UK and probably won't "need" it much is it important to get it fixed for the overall value of the car and also by having the air con working will it by any chance put extra "strain" on the engine that may lead to other problems caused?
Thanks for any advice-I am a relative newbie to this!

Jordan

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Re: Air con-to fix or not to fix
« Reply #1 on: May 26, 2013, 13:26:32 »
Conor, welcome to the site and congratulations on your upcoming purchase.  I can only speak for myself but if you aren't going to use the air conditioner why fix it now, unless you plan on reselling the car in the next couple of years.  If you fix it and never use it for 10 or 20 years, it may not work once you want to eventually sell the car.  Of course if you plan to take the car onto the mainland for holidays etc, you may want to use the air, in which case fix it.  All depends on what your plans are down the road.  So now you know what to do.  ;D ::) ;)
Marcus
66 230SL  Euro 4 speed

TR

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Re: Air con-to fix or not to fix
« Reply #2 on: May 26, 2013, 15:15:19 »
If you check out the Hagerty Insurance online car valuation tool and then click on "Vehicle Valuation Details" you will see under "Notes/Buzz" it says "+15% for a/c".  At least that is the case for a late model 280SL; I did not check the other models.  But at a 15% value-add it might be worth considering keeping it.  I've found an old Frigiking a/c unit can be brought up to a near-modern standard of performs for what I considered very reasonable cost.  You can now even get new, really nice, aluminum Frigiking placards for the front panel at reasonable cost.

Conor

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Re: Air con-to fix or not to fix
« Reply #3 on: May 26, 2013, 22:01:19 »
Thanks guys for the advice, much appreciated !

Tomnistuff

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Choosing an AC system
« Reply #4 on: May 27, 2013, 00:43:03 »
If this is in the wrong place, Mods, please move it.

As a part of my restoration, I am considering adding AC to my never-had-AC 67 Italian 230SL.  My question is, "Should I go the easy route and install a new Buds Benz system or should I, for the sake of pseudo-authenticity, search for an old Frigiking, Kuhlmeister, Behr, or Thermoking system and restore it?

The Buds Benz system is probably more efficient, newer technology, definitely easier to find new and perhaps easier to install, given that my engine and dash installation has not started yet.  Although Pagoda AC was a dealer installed item and therefore not "technically original", a Frigiking, Kuhlmeister, Behr, or Thermoking unit is at least period correct.  On the other hand, I restored the AC system on a 1969 Ferrari, and if I never again see a York compressor, it will be too soon.  It even made a smooth idling V12 shake like a wet dog.  I also don't want to deal with idle speed variations due to compressor cycling or the "garbage disposal" sound of a York piston compressor pumping at idle.

Is AC type relevant to a discussion of correctness and classic car value?  I've seen the NADA values discussion, but it didn't discuss "AC type", only the presence or absence of AC relative to the value of the car.  Maybe since there were so many different systems installed by dealers, maybe one more (a modern, efficient and quiet one) makes no difference to the value or authenticity.

Are there any opinions out there?  (I understand that like some unmentionable body parts, everybody is supposed to have one.)

Tom Kizer
Apparently late 1966 230SL 4-spd manual (Italian Version)
Owned since 1987 and wrapping up a full rotisserie restoration/modernization.
Was: Papyrus White 717G with Turquoise MBtex 112 and Kinderseat
Is: Dark Blue 332G with Dark Blue Leather (5300, I think)

johnaz

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a/c on 230 SL
« Reply #5 on: May 27, 2013, 00:47:02 »
Can I get input on adding a/c to a 230?  Stock restored car that never had a/c.  Can one install a/c and still be deemed a truly stock 230?
Was all a/c dealer installed on 230's?
Should I install a factory unit, and if so which one would be correct for a late 67 230?
Or is an aftermarket with rotary compressor deemed ok for install?
All input is appreciated.
Thanks,
John

Tomnistuff

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Re: a/c on 230 SL
« Reply #6 on: May 27, 2013, 00:54:45 »
johnaz,
You and I were writing the same question at the same time for the same kind of car.  Talk about coincidence !!
I suspect the mods should combine our posts.
Tom Kizer
Apparently late 1966 230SL 4-spd manual (Italian Version)
Owned since 1987 and wrapping up a full rotisserie restoration/modernization.
Was: Papyrus White 717G with Turquoise MBtex 112 and Kinderseat
Is: Dark Blue 332G with Dark Blue Leather (5300, I think)

johnaz

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Re: a/c on 230 SL
« Reply #7 on: May 27, 2013, 02:17:54 »
For sure we posted almost the same thing at the same time.
Hopefully we will get some good info.

Khurram Darugar

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Re: Air con-to fix or not to fix
« Reply #8 on: May 27, 2013, 15:03:48 »
" But at a 15% value-add it might be worth considering keeping it."

Here in the UK if it is hot enough to have the aircon on then its top down season.

Some years back I mentioned installing aircon to Roger Edwards of Roger Edwards Motors.   He looked at me comically and just asked why??  Aparantly this is a shared thought with many a UK owner where aircon relatively less common.  So yes as with anything extra there will be an associated price but its probably not as much as you think.  It is unlikely in the UK that aircon would command a significant premium such as 15%.  I would take a guess and say 5-10%. 
It would probably be more of an issue if you were to export/sell the car to a climate where aircon is really needed..... Arizona, OZ, Dubai etc.

Kay

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Re: Choosing an AC system
« Reply #9 on: May 27, 2013, 16:13:01 »
Tom,
since your car never had a/c my question is, why then do you want to molest it?  ;)
I could understand putting an a/c into a Pagoda if it was incorporated into the ventilation system, perhaps in exchange for the blower under the dash.
But this unit is just monstrous and plain ugly, imo.
Alfred
1964 230SL manual 4-speed 568H signal red
1966 230SL automatic 334G light blue (sold)
1968 280SL automatic (now 904G midnight blue)

Tomnistuff

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Re: Choosing an AC system
« Reply #10 on: May 27, 2013, 17:22:31 »
Hi Alfred,

I`ve had the car since 1987.  In the early years, it was in good shape and I used it quite a lot (in Michigan), but my wife, whom I love dearly, is an “autophobe” (I think I just made up that word), which means she doesn’t like cars, doesn’t like to drive, and unless the car is really comfortable, doesn’t even like to ride.  (She didn’t learn to drive until she was 35 years old, and then only by necessity).  That’s a psychologically difficult situation for a mechanical engineer who spent 34 years designing and developing automobile powertrains and doing advanced automotive engineering.

When we take out the Pagoda, for her it’s either too cold, or too windy, too noisy or too sunny with the top down, or its too hot with the top up or the hardtop on.

The climate here in Quebec City doesn’t help, with a six-month winter during which the car is stored, a one month spring, during which it rains, and a one month fall, during which it is to cool for top down driving.  That leaves four months (maximum) of summer, two months of which it’s too hot not to have AC.  I love driving with the top down and if there are a few hours that are appropriate to that kind of driving, I lower the top.  The AC will be for my wife.  I’m also planning to install lots of noise and heat insulation and a modern four channel stereo radio (USA-4 DIN or Retro Sound) as well as cruise control for me and a wind screen for her hair.

I’m trying to maximize Pagoda time.  Making the car enjoyable for my wife is a big part of that effort.  I’m too old to worry about collector car purism, however, my philosophy, like Jim Villers, is drill no holes (except for the two hoses).  I may be a purist but I’m not a masochist.

It doesn’t hurt that it will add about 15% to the value of the car, and will therefore pay for itself, at least on paper.  When it’s back together, I’m going to drive it as a daily driver for six months out of the year and store it for the other six months – until I die or can’t drive any more.  By the way, that statement that there are two months that are too hot not to have AC, is my statement, not hers.  Up here in the Northeast, the ozone layer is THIN.

So to re-ask the original question, does it matter what kind of AC it is, once I`ve decided to add AC, or should I just make it easy on myself?

Tom Kizer
Apparently late 1966 230SL 4-spd manual (Italian Version)
Owned since 1987 and wrapping up a full rotisserie restoration/modernization.
Was: Papyrus White 717G with Turquoise MBtex 112 and Kinderseat
Is: Dark Blue 332G with Dark Blue Leather (5300, I think)

johnaz

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Re: Choosing an AC system
« Reply #11 on: May 27, 2013, 20:27:36 »
And my 230 will live in Arizona, my wife will drive it too, and she wants a/c.  And if driven in the summer one just needs a/c to make it reasonable to drive in that climate.  Most of the rest of the year will not need a/c.
Just want to keep the car stock, and wanted to know what unit would be proper for a 67 230.

Garry

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Re: Choosing an AC system
« Reply #12 on: May 27, 2013, 22:00:48 »
I agree with Alfred, It just spoils a good Pagoda.  I had a Sanden compressor unit in my 230SL and I took it outtogether with all the under dash gear and sold it for a couple of hundred dollars. Improved milage, improved looks, took stress off the motor, etc, etc.   Adding 15% to the value of the car, I want some of what they are smoking. I don't think so. For a purest point of view I think it detracts.
Garry Marks
Melbourne/ Kyneton, Brisbane. Australia
1969 MB 280SL 5 speed RHD SOLD.
1965 MB 230SL Auto RHD Lt Blue 334G, Top 350H, 213 Leather, Tourist Delivery.
1972 MB 280CE Auto RHD 906G Blue Grey
2005 MB A200.
2006 MB B200
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dpreston Virginia

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Re: Air con-to fix or not to fix
« Reply #13 on: May 28, 2013, 18:20:31 »
I have a Buds Benz unit in my 70 280SE Cabriolet and absolutely love it. It allows the car to be driven much more often. Looks fine under the dash. If my Pagoda was a concours car I wouldn't think of adding A/C but mine is a low mileage original and would definitely consider adding the A/C.
In a smaller cabin the unit would be awesome in hot weather. If adding A/C makes you drive your car more then go for it. That's what owning these cars is all about. I would be shocked when its time to sell a buyer would not like the A/C. " Spoil it"...... Have fun driving it!!!
190SL 1960 Sold
280SL 1969
280SE 1969 cabriolet
Vette 67
Porsche 912 67

Cees Klumper

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Re: Air con-to fix or not to fix
« Reply #14 on: May 28, 2013, 21:44:51 »
I'm with DPreston and in addition If I were considering choosing between three Pagodas, one without a/c, one with the period-correct old-school diesel attachment, and one with the modern variant, all else being equal I would definitely opt for the last one.
But then I also have a 123 ignition in my car ...
Cees Klumper
1969 Mercedes 280 SL automatic
1968 Ford Mustang 302 V8
1961 Alfa Romeo Giulietta Sprint Coupe 1600
1962 FIAT 1500S OSCA convertible
1972 Lancia Fulvia Coupe 1.3
1983 Porsche 944 2.5
1990 Ford Bronco II

Garry

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Re: Air con-to fix or not to fix
« Reply #15 on: May 28, 2013, 23:00:53 »
Now if I thought I could fit it such that the cool air comes out of the dash vents I would be there in a flash but the big under dash units are just plain ugly to me.
Garry Marks
Melbourne/ Kyneton, Brisbane. Australia
1969 MB 280SL 5 speed RHD SOLD.
1965 MB 230SL Auto RHD Lt Blue 334G, Top 350H, 213 Leather, Tourist Delivery.
1972 MB 280CE Auto RHD 906G Blue Grey
2005 MB A200.
2006 MB B200
2019 Izuzu DMax 4x4 with Slide-on camper.
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TR

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Re: Air con-to fix or not to fix
« Reply #16 on: May 28, 2013, 23:05:47 »
Eye of the beholder...

Garry

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Re: Air con-to fix or not to fix
« Reply #17 on: May 28, 2013, 23:11:51 »
Absolutely correct TR.  I work on the principal that if it is hot enough to put the air on then the top comes down. You cannot beat top down driving.  And if it's that hot that it is too hot, i.e over 100f and 90 - 100% humidity then I will not be out driving anyway.
Garry Marks
Melbourne/ Kyneton, Brisbane. Australia
1969 MB 280SL 5 speed RHD SOLD.
1965 MB 230SL Auto RHD Lt Blue 334G, Top 350H, 213 Leather, Tourist Delivery.
1972 MB 280CE Auto RHD 906G Blue Grey
2005 MB A200.
2006 MB B200
2019 Izuzu DMax 4x4 with Slide-on camper.
2022 Volvo XC40 Twin Electric

66andBlue

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Re: Air con-to fix or not to fix
« Reply #18 on: May 28, 2013, 23:21:43 »
 ;D
Eye of the beholder...
Tom
that is quite understandable since you do not have the eyes of a "traditionalist"!  ;D ;D

See: .... BTW, it was another hot & sunny day in Boise, Idaho, at 102 F.  I ran a few errors around town; top-down, but with the A/C blasting and the Webasto seat coolers (modified) it was pleasant ... this from a guy who does not like heat, and who was forced to set through several minutes of dead-stop because of road work - but the engine temp held steady. ....
http://www.sl113.org/forums/index.php?topic=11089.msg74203#msg74203

Are all these creature-comfort-things still in your car after Gernold went through it?
Alfred
1964 230SL manual 4-speed 568H signal red
1966 230SL automatic 334G light blue (sold)
1968 280SL automatic (now 904G midnight blue)

TR

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Re: Air con-to fix or not to fix
« Reply #19 on: May 28, 2013, 23:56:57 »
Alfred,

Yes, those creature-comfort adders remain firmly in place.  The car is still with Gernold, currently freshing up the hardtop.  But your question is a good & timely one.  Just the other day I asked his opinion about returning the seats to there original configuration, which would be no big deal, or perhaps sending them to Mecatronic for some even further comfort.  I do not wish to put words into Gernold's mouth, (wouldn't dare), but my take away from the response to the M-B OEM modern adders (seat coolers, heaters, back massagers) are that they are nice.  So no plans to take any of that out, at least not within the foreseeable future.  And again, probably not if but when it does go back to standard it will not be hard to do.

Garry, I agree that top-down driving is the best.  The only way I know to improve on it is if it's really warm to switch on those seat coolers and crank up the old Frigiking A/C, which now looks at least as good as new, and performs far better than new.  And yes, part of that now includes some chilled, or heated, air flow coming out of those round side vents in the dash.  Between the ice-cold A/C, the seat coolers, the wind screen behind the seats and side-windows up one can comfortably cruise at high speed on some pretty warm days.  But when the sun is beating straight down forget about it; the tops is going up.  Then the enclosed cockpit can very quickly turn into a deep freeze. 

And re the value-add of A/C identified by Hagerty, well, sure makes sense to me...and ever more so for my wife.

BTW, we used in live in Australia and loved it.  It gets almost as hot in Idaho, (100 F not unusual mid-June thru Aug), as in some areas of Australia.
« Last Edit: May 29, 2013, 00:06:16 by TR »

Garry

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Re: Air con-to fix or not to fix
« Reply #20 on: May 29, 2013, 00:44:21 »
Hey Tom,

I am about to drive my 1974 Kombi on a 14,000km trip around Australia for a couple of months.  Air Conditioning.  Yep got air, well windows and a fan ;D ;D  it even oscillates from left to right

Now just how can I make the fridge that is between the front seats provide cooling to the seats?
Garry Marks
Melbourne/ Kyneton, Brisbane. Australia
1969 MB 280SL 5 speed RHD SOLD.
1965 MB 230SL Auto RHD Lt Blue 334G, Top 350H, 213 Leather, Tourist Delivery.
1972 MB 280CE Auto RHD 906G Blue Grey
2005 MB A200.
2006 MB B200
2019 Izuzu DMax 4x4 with Slide-on camper.
2022 Volvo XC40 Twin Electric

GGR

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Re: Air con-to fix or not to fix
« Reply #21 on: May 29, 2013, 01:47:06 »
if it is hot enough to have the aircon on then its top down season.

Exactly.

When we take out the Pagoda, for her it’s either too cold, or too windy, too noisy or too sunny with the top down, or its too hot with the top up or the hardtop on.

Wouldn't a nice W111 Coupe 3.5 with A/C be more adapted to your needs? That is a beatiful car with all the equipment and comfort you wife needs.
« Last Edit: May 29, 2013, 01:51:32 by GGR »

TR

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Re: Air con-to fix or not to fix
« Reply #22 on: June 02, 2013, 16:00:36 »
Hey Tom,

I am about to drive my 1974 Kombi on a 14,000km trip around Australia for a couple of months.  Air Conditioning.  Yep got air, well windows and a fan ;D ;D  it even oscillates from left to right

Now just how can I make the fridge that is between the front seats provide cooling to the seats?

Garry,

Sounds like a great adventure.  Have a good & safe trip.  Hopefully you'll post a few photos along the journey?

BTW, since no A/C I believe your seasonal timing is good!

Alan Smithee

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Re: Air con-to fix or not to fix
« Reply #23 on: June 15, 2013, 17:12:11 »

The Hagerty valuation of AC on a 280SL seems very high to me.  I was keeping a very close eye on the market until I bought mine last year, and I just did not see that sort of discrepancy.  That said, from a collector's perspective, any added value would be for a car with AC originally fitted; adding AC to a non-AC car does not necessarily increase the value of the car by 15%.  If you live in a climate that necessitates AC, then obviously it will increase enjoyment and be easier to sell regardless of whether it is original or not, as long as it is working well.

To the OP:  If AC is original to the car and you do not use it, I would not spend the money to make it functional, but I would not remove it, either.

Garry

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Re: Air con-to fix or not to fix
« Reply #24 on: June 15, 2013, 23:12:39 »
Since no cars left the production line with air conditioning, it is a mute point whether the car came with it or not unless you have the dealer receipt to show one was fitted by them otherwise nothing on the Data Card will show this and I suspect very few have the original receipt unless very lucky.

Thus the 15% may only apply to those that can prove the origionality of the fit by the dealer with receipts. >:(  Otherwise I suspect the value like you suggest is much lower and more of a nicety can comfort thing for some.
Garry Marks
Melbourne/ Kyneton, Brisbane. Australia
1969 MB 280SL 5 speed RHD SOLD.
1965 MB 230SL Auto RHD Lt Blue 334G, Top 350H, 213 Leather, Tourist Delivery.
1972 MB 280CE Auto RHD 906G Blue Grey
2005 MB A200.
2006 MB B200
2019 Izuzu DMax 4x4 with Slide-on camper.
2022 Volvo XC40 Twin Electric

Tomnistuff

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Re: Air con-to fix or not to fix
« Reply #25 on: June 18, 2013, 20:45:01 »
Since this thread appears to have calmed down a bit, I thought I would add one last subject that might be of discussion interest.  At least I might learn something from the opinions of others.

In my opinion (not worth much since everybody has one), the best looking add-on A/C system for Mercedes is the Behr unit in the first photo, but I suspect it’s too big for a Pagoda.
It is symmetrical in the car, provides air to both foot wells as well as the cockpit and looks to me like it was designed as a part of the interior.  In other words, it doesn’t look too “add-on”.
I don’t know enough about the others, Frigiking, Kuhlmeister, Behr and Thermoking, but I’m not attracted to passenger-side under-dash units.

In my explorations of the manufacturers of hot-rod A/C systems, I noticed a great similarity between one feature of some of them and the heating system in our Pagodas – the fans and motor design.

The second photo is a sketch that I have modified from the well-known Pagoda heating system exploded parts sketch.
 
It removes the heat/defrost air distribution box as well as the fan module and reuses some of their parts to adapt a Southern Air Superfrost or an Old Air Parts IP-800HC heating and cooling unit to fit in their place.  The heating portion of the unit would be unused, or could be used (with heater hoses and more firewall holes) to increase the heating capacity of the total system.

If feasible, this concept would retain existing left / right heat control and the existing dash vent outside air function.  In addition, it would use the existing heat/defrost cable to provide the same function by switching from heat to de-humidified defrost.  The existing fan switch position could be used.  A new location for a temperature switch would be required.

There are other modifications/features that could be included with extra effort, like heat and A/C from the existing outside vents on the dash.  The only thing I’m not too happy about is the need to fabricate a sort of console like the car in the first photo, but a console in a Pagoda might look pretty good.  I don`t even know enough about these cars to recognise the car in the first photo.

The heater and A/C hose inlets and outlets of the evaporator/heater unit would be a challenge, since they would pass through the “air collector covers” of the fans.  It would probably require some creative ideas or a bit of foam, butyl or asphalt putty to eliminate air leaks in the fan system.

My last comment is that my rule (for me) would be to not make irrevocable changes to the car.  Like Jim Villers, I believe in doing no harm.

I used to be a purist, but I’ve decided that at my age, it’s more important not to be a masochist.

Tom Kizer
Apparently late 1966 230SL 4-spd manual (Italian Version)
Owned since 1987 and wrapping up a full rotisserie restoration/modernization.
Was: Papyrus White 717G with Turquoise MBtex 112 and Kinderseat
Is: Dark Blue 332G with Dark Blue Leather (5300, I think)

w113dude

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Re: Air con-to fix or not to fix
« Reply #26 on: June 18, 2013, 21:17:06 »
Hey Tom,

I like the idea, more than that I love your drawings, WOW. :)

Tomnistuff

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Re: Air con-to fix or not to fix
« Reply #27 on: June 18, 2013, 21:27:01 »
Thanks, Shaun, but I only modified the existing illustration and added a few parts and flow lines.  Don`t give me too much credit.
I posted it to get suggestions and opinions about whether it will work.  The Southern Air A/C unit is only 10 inches deep (front to rear) and by using its fans to replace the existing fans, the unit stays well back of the front of the dash, leaving room for hoses and connections.

I'm waiting for more accurate dimensional info from Southern Air, along with photos of the rear of the unit showing the inlets and outlets for the heater and A/C hoses.

We'll see if it packages.

Tom K.
Apparently late 1966 230SL 4-spd manual (Italian Version)
Owned since 1987 and wrapping up a full rotisserie restoration/modernization.
Was: Papyrus White 717G with Turquoise MBtex 112 and Kinderseat
Is: Dark Blue 332G with Dark Blue Leather (5300, I think)

Jonny B

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Re: Air con-to fix or not to fix
« Reply #28 on: June 18, 2013, 21:30:35 »
Tom

The is the best quote I have read in some time!

"I used to be a purist, but I’ve decided that at my age, it’s more important not to be a masochist."



Jonny B
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1970 280 SL Auto, DB 904
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Tomnistuff

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Re: Air con-to fix or not to fix
« Reply #29 on: June 20, 2013, 23:50:16 »
Thank you both for your kind words.

I said in my last post that I was waiting for accurate dimensions and photographs of the rear of the Southern Air Superfrost heater/evaporator housing.  Well, after waiting 4 days for an answer to my email, I decided to give them a call and talk to technical support.  The phone was answered by someone who sounded like me – a southern U.S. accent.  He was a really nice friendly fellow, but apparently uninterested in my problem of needing to see the back of the housing and needing dimensions.  He had no other photos and didn`t seem interested in taking one.  I could almost hear him say, “Dimensions?  Dimensions?  We don’t need no stinkin’ dimensions!”

I finally wormed out of him that the width between the ends of the two fans is about 12 ½ inches, one-half inch narrower than the Pagoda fan housing – perfect!

I searched the web and found a paper written by a guy who installed one in an MGB.  He had some photos in his paper.  Knowing one dimension, I scaled and proportioned the photos to get the remaining dimensions I needed – isn’t mathematical proportioning wonderful?  I even roughly corrected for perspective.

I know that most people would have just told him to go to hell and that I would buy one somewhere else, but theirs is the smallest in the critical dimension by about two inches.  It`s only 10 inches front to back.

I still have to verify by measurement and perhaps a mockup that the sketch that I attached above and the illustration that I’ve attached below are compatible, and that nothing gets in the way of my accelerator pedal leg.

The illustration is what I had in mind to make.  It’s feasible, I think, without irreversibly changing the car.  My car is Dunkelblau (Dark Blue 332) paint and dark blue leather, and will hide my upholstery errors better.  I chose the photo to modify because it`s easier to see detail on light colors.

Please be kind.  I’m not an artist.  I’m the opposite, an engineer.  I think I`m going to do this and let the next owner put it back the way it`s supposed to be if he wants to.

Tom Kizer

Apparently late 1966 230SL 4-spd manual (Italian Version)
Owned since 1987 and wrapping up a full rotisserie restoration/modernization.
Was: Papyrus White 717G with Turquoise MBtex 112 and Kinderseat
Is: Dark Blue 332G with Dark Blue Leather (5300, I think)

juilkema

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Re: Air con-to fix or not to fix
« Reply #30 on: July 29, 2013, 22:03:55 »
Where do you get the new Frigking panels?

66andBlue

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Re: Air con-to fix or not to fix
« Reply #31 on: January 08, 2014, 16:58:23 »
Hi Tom,
what happened to your console project? Any progress?
Should be something for long winter nights.  ;)
Alfred
1964 230SL manual 4-speed 568H signal red
1966 230SL automatic 334G light blue (sold)
1968 280SL automatic (now 904G midnight blue)

Tomnistuff

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Re: Air con-to fix or not to fix
« Reply #32 on: January 09, 2014, 18:06:36 »
Hi Alfred,

The project is still alive.  Here’s the status.

I modified the schematic a little bit to reflect further thinking and a different A/C evaporator unit.  Some final configuration changes will have to wait until I install it in the car and will depend on packaging space.

I bought a Danhard 00405 heat and A/C unit but will not use the included heater core unless there is some later reason to add another heater core in parallel with the Mercedes heater core.  

I used a free 3D design program to design a sheet metal housing to adapt the Danhard evaporator to the Pagoda body sheet metal, replacing the MB fan module and the MB air distribution module.  I made them myself from 1 mm thick aluminum sheet and lots of tiny screws.  Photos show the system beside the MB parts that will be replaced.

It fits the car quite well and leaves enough room to route the ducts, although I’ll probably have to adapt smaller aftermarket defroster ducts to replace the MB ducts.  The photos were taken at different times so they represent the system at different levels of completion.  The latest, except for the fitting access holes, are the two taken in the driveway comparing mine to the MB parts.

I’ve been in contact several times with Joe Alexander for the engine brackets and pulleys.  He’s trying to round up sedan parts for me.  I’ve already bought all the other engine compartment parts – new Sanden compressor, hoses, fittings, condenser, dryer, switches, etc.

I expect the actual console will be relatively easy, since I plan to cover hand cut aluminum panels with left over leather and paint the center panel body color (Dark Blue leather 220 and Dark Blue paint 332G).  As I mentioned previously, I used a red car photo for the sketch so that detail would be easier to see.  Dark blue obscures everything, like black does.

I am still trying to put the car back together slowly, particularly the systems with which I’m less experienced, so I have not started on the interior yet.  Joe has been really busy and I haven’t been delayed so I don’t want to disrupt his other projects.  I’m finishing up the undercarriage, so It’s about time for me to contact Joe again to pull together the engine bracketry and pulleys and to start dressing the rebuilt engine sitting on a pallet.  For me, the pulleys are the big question.  I don’t want to buy a bunch of parts that don’t align and have to be discarded.

Tom Kizer
« Last Edit: January 09, 2014, 18:13:14 by Tomnistuff »
Apparently late 1966 230SL 4-spd manual (Italian Version)
Owned since 1987 and wrapping up a full rotisserie restoration/modernization.
Was: Papyrus White 717G with Turquoise MBtex 112 and Kinderseat
Is: Dark Blue 332G with Dark Blue Leather (5300, I think)

66andBlue

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Re: Air con-to fix or not to fix
« Reply #33 on: January 09, 2014, 18:14:56 »
Hi Tom,
that is a lot of progress!
Keep us posted, please.
Alfred
1964 230SL manual 4-speed 568H signal red
1966 230SL automatic 334G light blue (sold)
1968 280SL automatic (now 904G midnight blue)

114015

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Re: Air con-to fix or not to fix
« Reply #34 on: January 09, 2014, 23:58:55 »
Dear Tom,

Absolutely stunning! ;) :D This is the way to go. You are an engineer and this will be the way that Daimler Benz forgot to develop for our cars.

Personally, I today live (like many others) in one of the areas throughout the world where aircon weather means top-down driving-only...
...  but I remember very well from my New Jersey and Wisconsin summer days that some weeks were absolutely uncomfortable without AC, and top-down or without AC was/is not an alternative with 90% humidity, traffic jam and using Holland Tunnel , etc. :o :P

The original Frigiking etc. system always appeared to me to be the wrong (and only easy bolt-on) solution as a quick response to the market's demand for an AC but without a proper solution for equal and comfortable cold-air supply in our SLs ...

But your system seems now to be the solution that MB had not developed ... ;)

I definitely wish you good luck and please keep us informed.

Achim
(purist but understanding the purist-nonmasochist switch-over)
Achim
(Germany)

Tomnistuff

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Re: Air con-to fix or not to fix
« Reply #35 on: January 10, 2014, 17:20:25 »
I thank you all for your comments and especially your encouragement.  There are days when I say to myself, "Why in hell did you start this restoration project when you could have sold the car as a project car and bought a restored one for less than you will pay to restore this one, not even counting the work you are not being paid for?  In addition, you go and commit to designing an integral AC system into the car."

Posting progress and receiving the kind of complements and encouragement that you all provide make it all worth while.  I hope, when it's finished, I can drive it to PUB to meet some of you.  Unfortunately, I started a couple of years too late to drive it to Williamsburg for the 50th.  I need to get back to Western Kentucky anyway to do some genealogy research and have my grandmother's tombstone restored.  Maybe I can do both on the same trip next July/August, if there is going to be a PUB 2014.

Thanks again.  I'll keep posting progress and questions as I continue.

Tom Kizer
Apparently late 1966 230SL 4-spd manual (Italian Version)
Owned since 1987 and wrapping up a full rotisserie restoration/modernization.
Was: Papyrus White 717G with Turquoise MBtex 112 and Kinderseat
Is: Dark Blue 332G with Dark Blue Leather (5300, I think)

Tomnistuff

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Re: Air con-to fix or not to fix
« Reply #36 on: August 21, 2015, 19:11:06 »
I realize that in the last (very old) post, I lied.  I said I would post updates as I continued – I didn’t!

I’m 70 now and find that I should never have started this project after having spent 34 years in the automotive industry before retirement and then having restored another car after retirement, and before this one.

I find that the older I get, the faster time passes and the less I can accomplish each day.  I also get tired too easily and make mistakes that wipe out most of my progress.

Anyway, since the car interior AC system and console are finished, here are a few photos of what I hope resembles what Mercedes-Benz would have done, had they decided to integrate the AC system themselves.

I’ll have plenty of photos at PUB, just in case someone is curious.

Tom Kizer
Apparently late 1966 230SL 4-spd manual (Italian Version)
Owned since 1987 and wrapping up a full rotisserie restoration/modernization.
Was: Papyrus White 717G with Turquoise MBtex 112 and Kinderseat
Is: Dark Blue 332G with Dark Blue Leather (5300, I think)

66andBlue

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Re: Air con-to fix or not to fix
« Reply #37 on: August 21, 2015, 22:53:53 »
Very well done, congrats Tom!
How about bringing all your photos along on a USB stick and showing them to us on a BIG screen together with a narrative?  ;)

How much wider is the tunnel now on the sides, that is, does the handbrake lever still fit?
Alfred
1964 230SL manual 4-speed 568H signal red
1966 230SL automatic 334G light blue (sold)
1968 280SL automatic (now 904G midnight blue)

George Des

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Re: Air con-to fix or not to fix
« Reply #38 on: August 22, 2015, 12:37:55 »
Tom, I thought I was the only one who operated like this! Seem to get started on a project, get halfway through and have to put it down until I get a shot of motivation to finish it. Drives my wife crazy when she looks around and sees so many partially completed projects.

TJMart

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Re: Air con-to fix or not to fix
« Reply #39 on: August 23, 2015, 22:48:13 »
Can someone let me know where I can find the aluminum Frigiking placards for the front of the interior unit and the knobs?

Thanks in advance!

Tony
Tony
1970 280SL, 4 Speed

Tomnistuff

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Re: Air con-to fix or not to fix
« Reply #40 on: August 25, 2015, 17:25:56 »
Thanks, George and Alfred,

The accelerator pedal clearance seemed to work out well, with a sort of tapered foot recess being built into the console driver’s side panel.  I’ve included another, better, photo taken from the position of the dimmer switch.

I, too, had been thinking about the hand brake lever during the construction, BUT, I got too enthusiastic with the progress on the driver side console panel and the success I had with the accelerator pedal console clearance.  I forgot to check the clearance to the hand brake lever before starting the upholstery.  When I read your response, Alfred, I broke into a cold-sweat and went into the garage to trial-install the lever.  Disaster!  See the photo below.

Oh well! when I get back from PUB, I’ll have a nice long project waiting for me.  Also, PUB will provide me an excellent network of experts to offer me suggestions for solutions.
There are some alternatives, but with varying degrees of advantages and disadvantages.  I’ll take my time and choose the right one.

1)   I thought of bending the lever more to provide clearance, but I don’t want to destroy an unobtainable car part (the lever).  The bend in the original lever was obviously put into the lever after initial design, probably to provide more clearance to the tunnel.  Take a look at the underside of the lever and you can see the buckling of the lever wall on the inside of the bend.

2)   I could remove the leather and recess the panel to make clearance, but I might not be able to refit the leather.  I don’t know if I have enough left to recover it with new leather.  Also, the end of the handle reaches the AC register, so creating a recess in the panel won’t be easy, since the register mounting surface has to remain flat.

3)   I will explore the total lever travel required and determine whether it’s possible to adjust the brake cable to use just the upper range of the lever travel, with the desired “brake-off” position of the lever being as shown in the photo.  If that won’t work, then I’m left with the last alternative below.

4)   If 3) above doesn’t work, then I will have to verify my remaining leather and, if I have enough, remake the driver’s side console panel with the objective of providing clearance to the lever.  It wouldn’t be the first time I’ve had to restart a project or part of a project after having made a stupid mistake.  In all my life, I have never learned anything from my successes.

I’ll try, but can’t promise, to have my photos organized in a presentation format.  If I do, it will be short, because I’m uncomfortable taking people’s time for an R&D kind of subject.

Thanks for your praise and comments. 

Tom Kizer
Apparently late 1966 230SL 4-spd manual (Italian Version)
Owned since 1987 and wrapping up a full rotisserie restoration/modernization.
Was: Papyrus White 717G with Turquoise MBtex 112 and Kinderseat
Is: Dark Blue 332G with Dark Blue Leather (5300, I think)

66andBlue

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Re: Air con-to fix or not to fix
« Reply #41 on: August 25, 2015, 18:54:07 »
Sorry Tom,  I did not want to be the bearer of bad news!  :o
Among the options you listed I would concentrate on number 3.
If the cable length is enough to move the locked position rearward (clockwise) then perhaps the forward, unlocked position could be reached before the lever hits the side panel.
The other limiting part is the "toothed segment" #4 shown in the BBB page (below). Perhaps it can be re-manufactured to either have a longer toothed radius or a narrower angle between the pivot pin #5 and the hex nut #6 to move the teeth backwards.

Tough pickle, but solvable I hope.

Alfred
Alfred
1964 230SL manual 4-speed 568H signal red
1966 230SL automatic 334G light blue (sold)
1968 280SL automatic (now 904G midnight blue)

Tomnistuff

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Re: Air con-to fix or not to fix
« Reply #42 on: August 26, 2015, 18:30:05 »
Hello Alfred,

Because I leave for PUB two weeks from tomorrow, I could not leave without having an answer to the hand brake lever clearance problem, so I finished the Number 3 option lever assembly and adjustment this morning.  Fortunately the brakes, cables, springs, and rubber boots under the car were already finished and just hanging there.  I just finished jacking up one rear wheel, adjusting the lever and checking out the parking brakes.

As my mother used to say (in her Southeast Missouri accent), “Even a blind squirrel finds a nut once in a while,”, which translates into English as, “Boy, did you get lucky!!”

The two photos show the brake lever in its completely released position (wheel spins freely) and in its brakes-on position (can’t turn the wheel by hand, at least).

It probably helped to have new brakes and to have adjusted the hand brakes "by the book - BBB that is.)

I’m happy.

Tom Kizer
« Last Edit: November 06, 2019, 19:18:38 by Peter van Es »
Apparently late 1966 230SL 4-spd manual (Italian Version)
Owned since 1987 and wrapping up a full rotisserie restoration/modernization.
Was: Papyrus White 717G with Turquoise MBtex 112 and Kinderseat
Is: Dark Blue 332G with Dark Blue Leather (5300, I think)

66andBlue

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Re: Air con-to fix or not to fix
« Reply #43 on: August 26, 2015, 21:05:25 »
....
As my mother used to say (in her Southeast Missouri accent), “Even a blind squirrel finds a nut once in a while,”, .....
Can’t agree with ya more, ya done good, and mother is always right.

At least no misery  (that is how I pronounce Missouri) for a while.  :D

See you in two weeks.
Alfred
1964 230SL manual 4-speed 568H signal red
1966 230SL automatic 334G light blue (sold)
1968 280SL automatic (now 904G midnight blue)