Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Vintage Mercedes Forum

LinkBack Thread Tools Display Modes
Old 05-05-2009, 05:48 PM
Registered User
Join Date: Nov 2007
Posts: 64
Rebuild cylinder head 1975 230.4

Is there any other work I should consider once the head is removed? I bought a new water pump today because it was less than $30 and easy to change out with the front of the engine off. Any other work I should consider while the labor is so cheap?

Reply With Quote
Old 05-05-2009, 06:52 PM
Registered User
Join Date: Jan 2006
Location: Tucson, AZ
Posts: 5,344
Valve stem seals, of course. Double check the guides, have the head checked for straightness, lap in the valves and you should be good for another 100K miles.

If the head is not true make sure the shop knows how to straighten the head instead of just milling it flat. If they don't know what you are talking about then take it to another shop.

A good rule of thumb for minimum thickness is to lay a paper match sideways beneath the casting numbers on the left rear of the head. You should have some "meat" below the lower edge of the match.
Reply With Quote
Old 05-05-2009, 08:21 PM
Registered User
Join Date: Nov 2007
Posts: 64
1975 230.4

Is it true this gas engine is as robust as the 240D? So....a new valve job should not blow the bottom end out? The engine was blowing a lot of smoke at idle after stop up - like oil running down the valve stems. But, engine has tremendous power and acceleration for a four cylinder.
Reply With Quote
Old 05-05-2009, 09:52 PM
t walgamuth's Avatar
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 38,103
I believe many of the parts are the same between those gassers and diesels such as the crank and bearings.

They're pretty rugged but the gas running down the cylinders makes more wear than diesel.

I have always thought the thing about doing a valve job will make it start to use oil is a lot of bunk. If the bottom end is sound its sound....just my $.02.

[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 02:32 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page