Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: Autobob on February 25, 2016, 20:28:34

Title: 280sl cylinder head hole what is missing?
Post by: Autobob on February 25, 2016, 20:28:34

Attached photo at red arrow, we have a threaded hole but do not know what goes there please advise, it is next to cylinder #6.

Arrgg, It would have been so much simpler if this car had been assembled when it arrived. So many missing parts...

Thank you, Bob

Title: Re: 280sl cylinder head hole what is missing?
Post by: kampala on February 25, 2016, 22:38:31

I think that is the port for a Thermo Time Switch if your car is a late 280sl.  Earlier cars had this switch on a pod closer to spark plugs 2 & 3.  Later cars have this switch next to spark plug 6.  Sometimes, this port is used for a cooling by-pass modification and in such cases the TTS is moved into the bypass line. 

Title: Re: 280sl cylinder head hole what is missing?
Post by: Autobob on February 25, 2016, 23:00:22

Thank you that helped, yes this is late model 1971, I found it in technical forum part 001 545 92 24. Looks like NLA from Benz, Joe or Alfred would you have one of these?

Title: Re: 280sl cylinder head hole what is missing?
Post by: Benz Dr. on February 25, 2016, 23:10:27

Thermo time switch? That should be readily available.

Title: Re: 280sl cylinder head hole what is missing?
Post by: Autobob on February 25, 2016, 23:13:12

OK then part number in technical may be superseded, will check that out. Thanks, Bob

Title: Re: 280sl cylinder head hole what is missing?
Post by: 66andBlue on February 25, 2016, 23:31:21

Quote from: Autobob on February 25, 2016, 23:00:22

Thank you that helped, yes this is late model 1971, I found it in technical forum part 001 545 92 24. Looks like NLA from Benz, Joe or Alfred would you have one of these?

Sorry, don't have one.

Title: Re: 280sl cylinder head hole what is missing?
Post by: Autobob on February 25, 2016, 23:54:46

@Benz DR, just heard back from MB dealer, TTS discontinued and no superseded number.  Rats.

Title: Re: 280sl cylinder head hole what is missing?
Post by: Tyler S on February 26, 2016, 02:12:22

Here is one at Auth Classics. Very Pricey
http://www.authenticclassics.com/Mercedes-Thermo-Time-Switch-fits-230SL-250SL-p/auth-004360.htm

Or you can use this one with a slight harness modification. The rubber boot will hide the connection.
http://www.authenticclassics.com/Mercedes-Thermo-Time-Switch-230SL-250SL-280SL-p/auth-006760.htm

Title: Re: 280sl cylinder head hole what is missing?
Post by: ja17 on February 26, 2016, 05:51:36

Wow, crazy prices on these!

Title: Re: 280sl cylinder head hole what is missing?
Post by: Tyler S on February 26, 2016, 06:42:54

Another disappearing part that will go way up in price just like the fuel pumps last year.

Title: Re: 280sl cylinder head hole what is missing?
Post by: WRe on February 26, 2016, 07:18:30

Hi,
here you find some info: www.sl113.org/wiki/Engine/ThermoTimeSwitch.
...WRe