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 Gasket Sealants - Shellac/Silicone ???
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Brian R
Crazy Horse

USA
1744 Posts

Posted - 25 Mar 2020 :  07:25:13 AM  Show Profile  Reply with Quote
Looking for best practices on sealing up the front of the engine.

Water Pump, Timing Cover, Intake to Cover and Oil Pan

Should I go without sealants on some, use shellac on others or possibly some type of silicone on others?

Pre-install: All surfaces with be thoroughly cleaned and straightened where applicable.

Oil Pan to Cover - the cork that came with the Felpro set is extremely thin. Could be bad memory on my part but I remember it being thicker last time around. Should I use some black Permatex or something to ensure a tight seal? I will ensure that the pan surface is straight and true.

Cover to Block - shellac maybe?

Water Pump to Divider to Cover?

Cover to Intake - rubber donut - Permatex, dry???

Thanks guys. I have done this a few times over the years but always appreciate your input on what has worked and what has not worked for you.

Edited by - Brian R on 25 Mar 2020 07:31:41 AM

tjs44
Crazy Horse

USA
668 Posts

Posted - 25 Mar 2020 :  09:28:55 AM  Show Profile  Reply with Quote
Brian,I have gone to Hylomar.It seals well and is not a huge PITA for cleaning up.Hard to find these days.I have been buying it on Ebay.Tom
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Brian Baker
Mongo

USA
1086 Posts

Posted - 25 Mar 2020 :  11:52:05 PM  Show Profile  Reply with Quote
Hylomar can still be found in shops catering to 2-stroke dirt bikes as well as old timers websites (think street rod or 60's era drag/boat racing).

Will Rogers never met a liberal.
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Brian R
Crazy Horse

USA
1744 Posts

Posted - 30 Mar 2020 :  3:16:11 PM  Show Profile  Reply with Quote
Thanks all
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DanM
Cochise

233 Posts

Posted - 06 Apr 2020 :  08:40:16 AM  Show Profile  Reply with Quote
I've never heard of using shellac. If sealant is ever needed, some form of Permatek always works. The black is the standard.
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Red Horse
Cochise

376 Posts

Posted - 06 Apr 2020 :  10:55:02 PM  Show Profile  Reply with Quote
I always use Aviation form a gasket.
Silicone doesn't seal very well and a will leak. Plus it is extremely difficult to remove from a surface. It may look clean but its still there.
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