Quote:
Originally Posted by Singleton
Was any type of anerobic sealant used between the main cap and the block surface before bolting down? Oil can migrate there also.
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Quote:
Originally Posted by mgarblik
Excellent point and that can be a bitch of a leak to find. On a recent IAII aluminum engine< I had a leak there with the anerobic sealer in the joint. Only a smoke test would find it. With the flywheel off and the smoke on, it was roaring smoke out of that interface on both sides, very obvious. I sealed it with RTV from the outside and retested. Leak gone. Pontiacs are very difficult to seal 100%. A real challenge.
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Regarding the main cap mating surface, I used a smudge of Right Stuff black RTV. Is there something better I should have used?
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Ken
'68 GTO - 464 - Ram Air II heads - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac (
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'74 Ventura 350
'69 AMC Javelin SST