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Old 03-22-2024, 12:13 PM
alexl alexl is offline
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Join Date: Jan 2024
Location: Kansas City
Posts: 32
Quote:
Originally Posted by whunter View Post
1982 300TD wagon?
How many miles?
Any idea what state it was in most of life?

My assumption:
300,000 or more miles.
Valve guides are worn out = compression loss + excess oil loss.
The head gasket is seriously beyond life.
The oil filter housing to engine block gasket is seriously beyond life.
Unless you have documented new chain proof, replace the timing chain now.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

300psi+ all cylinders = 250psi lower than my 1985 300SD.

Roughly 325psi when my friend got it; Replaced, Valve guides, head gasket timing chain + guides.

After all the work, compression was 550psi and still is.
edit:
Oops, sorry, I fat fingered the keyboard.
Cylinder compression is 450psi, and at the high end of spec.


It was gifted to me several years later, just before he died.

.

I have never heard of a head gasket as "beyond life" these either seal or they don't (in my opinion), no reason to replace unless needed. Also, why replace timing chain if stretch is within spec? Timing chains rarely fail like belts do.

Valve guides - agree, will get to those.

Your compression is very high - wasn't the "factory new" compression something like the low 400s?

Last edited by whunter; 03-22-2024 at 03:21 PM. Reason: i fat fingered keyboard
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