Recent Posts

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Drive train, fuel, suspension, steering & brakes / Re: adjustment of throttle closing damper (dashpot) is limited to 4mm
« Last post by pauloe on Today at 00:58:16 »
Thanks Rodd. Yes my original dashpot and the used one I just got are exactly the same.  See pics.
Since they match, and since the used one came from Gernold, I am pretty sure these are SL dashpots. 
Yes I am adjusting dashpot in/out with the two nuts on the dashpot's threaded shaft.
And see pic showing the point of interference (black arrow) between L bracket (red arrow) and dashpot body, this is with the pin depression set at 4mm. (pin is depressed 4mm when linkage settles in closed position)
I was actually starting to go through joe's linkage tour when I noticed my faulty dashpot, and yes I need to finish that.
But any adjustment to linkages will only move the L bracket in the forward/back direction (down/up in pic). But I need this L bracket to move right to avoid the interference. (or the dashpot to move left). Don't see how linkage adjustments can do this.  But I will finish my way through the linkage tour and see.
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Drive train, fuel, suspension, steering & brakes / Re: So, is water supposed to come out of this hole?
« Last post by roymil on May 02, 2024, 22:41:11 »
Here’s an update.   I traded emails with Pinder who remembered his water leak being 3rd bolt from front, or middle of cylinder #3, and I double checked yet again thats where my water spout came from too.   His leak came on a newly rebuilt engine with a re-machined head so I would assume they would have fixed any issue like that if it was wrong.  He said he put some permatex sealant on the bolt, reinstalled it and had no problems after that. 

So that gives some confidence that particular stud hole is supposed to be though to the water passage, but I note not all agree that is correct.

So I thought to get a borescope and I took some pictures.  First one is clearly from a blind stud hole for reference, thats front most #1 stud.  Second is #3 stud hole that leaked, clearly not blind.  Third picture is from nearer to bottom of #3, and the last is looking past the bottom into the head.   It's not the smoothest transition from the bottom of the hole into the head, but it looks like it’s supposed to be that way.  There was no sign of corrosion at any point.   The coolant that drained was a nice & clear mercedes blue.  I feel like a corrosive failure would look much more randomly shaped, with rough texture and discoloring.   I do have some experience looking at SEM shots of all sorts of chemically damaged semiconductors at the submicron level, and physics is physics.  Decay and destruction is typically very random and messy at any scale, whether it’s a transistor or a rusted bolt.

So, at this point I'm leaning back to not to pulling the head.  Mainly because I know compression, leakdown, and power are great.  Never smokes and has very clean oil too.  This is where I was when I pulled threads on that short head bolt a while back.   I figure if I closely monitor the fluid quality and other vitals I should be able to detect a problem soon enough to come back and pull the head later if I need to...and I'll be a lot faster next time.

A wise man once said if it works, don't fix it....but I know there are plenty of wise dudes on this forum too, so I'd be a fool not to listen to any flaws in my reasoning here.
Thanks!
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Electrical and Instruments / Re: Ground wire location
« Last post by Pawel66 on May 02, 2024, 22:23:26 »
If memory serves me well, goes to one of the radiator holding screws. Part of creating Faraday’s cage for interference suppression.

Discussed here on Forum, would come out in a search.
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Other cars / Re: Hagerty cancels The Detroit Concours for 2024
« Last post by Benz Dr. on May 02, 2024, 21:55:02 »
The Detroit show was well aware of the Cobble Beach show. This date change pissed off a lot more owners than you might first imagine but there were other problems too.
They dismissed most of their voluntary helpers which wasn't smart but rightly or wrongly, not everyone wants to go to downtown Detroit.

I showed at the Willistead Manor show back in the early 90's in nearby Windsor Ontario. Nice show that politics took out. All of these shows face external threats that few ever see.
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W11x chassis cars / Re: W111 armrest
« Last post by col320ce on May 02, 2024, 21:50:22 »
Ooh that's a great suggestion. I'll try it next time I see my baby (I'm living overseas so it'll be a while)
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Other cars / Re: Lowest of the low.
« Last post by Benz Dr. on May 02, 2024, 21:36:20 »
Don't you mean high ratio? The lower the ratio number the higher the gearing. Many make this fundamental mistake - easy to do.
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Drive train, fuel, suspension, steering & brakes / Re: More Camshaft Questions
« Last post by Likes2Laff on May 02, 2024, 21:11:14 »
Thanks, @Benz Dr.

I've had custom pistons made with valve pockets. I would not be using the camshaft off the shelf. Either it will be further modified or used as the basis for a custom unit to be created.
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Items for Sale / Re: Owners manual & New car documents
« Last post by mBdrvr on May 02, 2024, 21:03:17 »
I just sent a PM to you.
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Body, interior, paint, chrome, and cosmetic items / Re: Original padding/insulation under floor mats?
« Last post by badali on May 02, 2024, 20:37:20 »
Those are original pads under the mats.  Mine are still in the car and like new...
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Body, interior, paint, chrome, and cosmetic items / Re: Original padding/insulation under floor mats?
« Last post by rwmastel on May 02, 2024, 20:37:04 »
They probably changed mid-250SL when so many things changed.

Search this forum for "Cocomat", if you're unfamiliar with that company.
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