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Intake Manifold Oil Seepage

Started by joesauer, August 02, 2021, 10:03:30 PM

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joesauer

68 Camaro 350 with Edelbrock performer intake manifold.   Getting a little oil seepage around center bolts.  No problem for 400-500 miles then slight seepage starts again.  Before resealing I always clean the bolts in solvent, clean the bolt holes & run a pipe thread reamer to be sure there's no residue/oil, etc, in the bolt holes.   I use ARP thread sealer.   Any suggestions for a better thread sealant?   How about Permatex High Performance Sealant 56521?

z28z11

#1
Use Permatex non-hardening thread sealant (or Form-a-Gasket, old #2) - definitely oil resistant, I've always used it to seal head bolts, never failed me yet in 50 years of engine rebuilding. The only thing I dislike about it - don't get it on your hands or clothes (or anything else you don't want stained), it's a real pain to get off of you once it gets there. Great stuff -

Regards,
Steve
1968 Z28 M21/U17 BRG/W 1967 Chevy ll Nova SS 
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06  1949 3100 5wd 235/6