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#1
06-22-2022, 10:24 PM
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Best gasket sealant for antifreeze - not when racing?
Hey Everybody,
Tired of the leaks! What kind of Gasket sealant to use with Antifreeze and/or Water Wetter for the crossover gaskets at the heads and the water pump - timing cover? I'm getting a new crossover and D79 Alcohol gaskets - they are harder and smoother than regular gaskets. Thanks, Craig Last edited by CraigG.; 06-22-2022 at 10:43 PM. |
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#2
06-23-2022, 01:05 AM
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I use Permatex # 2 there.
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#3
06-23-2022, 08:27 AM
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I've always use a thin coat of the right stuff. No leaks. A bitch to remove after though. You can put a bit on both sides of the rubber donut for the bypass.
__________________
68 Firebird. IA2 block, 505 cu in, E-head, Solid roller 3650 weight. Reid TH400 4:11 gear. 29" slick. Best so far 10.12@133 mph. 1.43 60 ft. 76 Trans am, TKX .81 o/d, 3.73 Moser rearend, 468 with KRE D-ports, Doug headers, 3" Exh. |
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#4
06-23-2022, 10:34 AM
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ive always just used the felpro gaskets with the blue silicone strip around the intake & coolant ports. on the coolant ports if there is any pitting or even if not i use a light coat of permatex ultra black or grey & have never had any coolant leaks. i use a light coat of permatex on the little rubber gasket too with leak free results. easy to remove & clean up too even after 5-10 years if use.
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#5
06-27-2022, 09:47 PM
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Thanks guys - I let you know when it doesn't leak - what was the sealer used!
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#6
07-05-2022, 08:13 AM
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i've had no problems with RTV/Permatex blue (or grey/black)
as with any gasket surface, just make sure as clean as possible maybe use some isopropyl alcohol or some other cleaning/wipe agent to make sure as clean as possible when i had the timing cover leak, the culprit for me was putting the intake manifold on first, caused the timing cover in the upper left front area to not seal up properly boy i chased an external leak for a little while on that...... drove me nutz.. JB told me cover first, then draw the intake to the cover.... once i did that, no issue of course this was when i was first setting the engine up, sometimes excitement makes you overlook simple things |
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#7
07-08-2022, 02:45 PM
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Has anything been milled, intake or heads, maybe the angle is off on the crossover part if separated?
__________________
Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74  2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#8
07-09-2022, 08:53 PM
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Hey Guys - the winner is Ultra Black on ".125 Kauffman D79 gaskets -
(I wanted the height to clear the valley cover as heads and block milled a few times over the years) the timing gear cover/ water pump would not align with the crossover hole and gasket - O-ring - bolt deal - so got lucky with the Ulra Black working. Thanks Everybody and see you at the track! |
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