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  #1  
Old 06-15-2013, 07:01 PM
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Join Date: Aug 2012
Location: Central Ohio
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Coverting a 3.5 to 3.0 - head gasket compatibility?

I'm currently in the process of replacing the 3.5 rodbender in my 350sdl with a 3.0.

I am only using the 3.0 shortblock, since the head is the weak link on the 3.0 cars. I will be using the 3.5 #20 head.

PelicanParts shows different head gasket sets for the 3.0 vs the 3.5.

Which head gasket set should I use? Will both work? I can't really find detailed photos to show the differences between the two gaskets.

Any other advice for the swap is appreciated. I'm not anticipating a lot of difficulty since the two engines are so similar.

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  #2  
Old 06-15-2013, 07:28 PM
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Location: Beachwood, NJ
Posts: 462
Use the 3.0 gasket. It will match the piston size. HG available standard and thick.
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1987 300SDL
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  #3  
Old 06-16-2013, 12:49 PM
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Thanks. Now that I think about it, that makes sense- shouldn't have needed to ask the question in the first place.

I can really only find Reinz gasket sets. I've used Reinz before but never on a Mercedes (in fact, this is the first Mercedes head gasket I've done). Would that be a bad move on this car? I'm going to call the dealer on Monday to get a quote for a genuine gasket, but if it's much more expensive and the Reinz works as well, might as well not throw $ away.
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  #4  
Old 07-28-2013, 05:07 AM
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Join Date: Oct 2002
Location: Bay Area No Calif.
Posts: 4,304
I am facing a headgasket purchase for my S350D project. If the engine checks out I'll reinstall the head that has a bent valve and now at the machine shop for repair. The cam broke in it and according to PO it was ticking a while but he kept driving it until it went kaboom (duh!). I intend to get the headgasket at the dealer because the nature of the rodbender I want it to be right.

I've used Victor Reinz headgaskets before and was told they are tops. There's one on my '87 300D now. I suspect they probably deliver to MB.
Anything else I would avoid, this is not a place to save a few bucks!
DDH

Quote:
Originally Posted by upshift View Post
Thanks. Now that I think about it, that makes sense- shouldn't have needed to ask the question in the first place.

I can really only find Reinz gasket sets. I've used Reinz before but never on a Mercedes (in fact, this is the first Mercedes head gasket I've done). Would that be a bad move on this car? I'm going to call the dealer on Monday to get a quote for a genuine gasket, but if it's much more expensive and the Reinz works as well, might as well not throw $ away.

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