F-head Engine Gaskets

Aug 17, 2003 1 Replies

I am reviving my new to me 64 CJ5 that has been asleep since 1976. I am currently changing all the fluids and everything rubber.



I have rebuilt engines before, but not of this make or vintage. I am not planning to do all that much rebuilding since the jeep has less that 9,000 original miles on it just replacing seals & gaskets.



What is the trick with the round rubber strips on either side of the rear main bearing cap? The manuals I have been reading indicate you do not trim them, but the amount that they protrude is critical.



Also are there any other tricks unique to the F-head that I should look out for?


Many older engines sported rope upper and lower rear main seal halves, which had to be trimmed to protrude a fairly exact length. Replacements tend to be preformed rubber, which you do not trim. I have never disassembled one of these engines, but I assume it is the same.

Earle

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