Strange thing happening to one header gasket??

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bhm1712
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Strange thing happening to one header gasket??

Post by bhm1712 » Mon Mar 24, 2014 6:55 pm

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Noticed this today when tightening bolts!

Seems to be some moist substance. It's not blowing here at all but there seems to be an oily wetness soaking into the gasket from god knows where. I assumed it might be header paint melting off and soaking up but at that point the gasket isn't in direct contact with the flange due to the gap created by the sealing bead on the header port itself. It sticks up about 1.5mm so when pulled up tight it leaves a small gap where that substance is soaking up.
Ian Hopkinson - Membership Manager & Forum Administrator
Northern England & Midlands Rep

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User avatar
bhm1712
Site Admin
Posts: 2677
Joined: Sun May 10, 2009 4:58 pm
Membership No: 20-607
Year: 2001
Model: Trans-Am WS6
Engine: 350
Name: Ian
Location: Nottingham
Location: Nottingham
Contact:

Re: Strange thing happening to one header gasket??

Post by bhm1712 » Mon Mar 24, 2014 6:59 pm

I mean this when I say sealing bead:

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The sealing face where the weld has been ground down creates a gap which allows the gasket to move freely within the gap and so it's not directly pressed against the flange where the moisture is soaking up! Im lost
Ian Hopkinson - Membership Manager & Forum Administrator
Northern England & Midlands Rep

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SUPERCHARGEDGTA

Re: Strange thing happening to one header gasket??

Post by SUPERCHARGEDGTA » Mon Mar 24, 2014 9:35 pm

see if it burns off with use

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bhm1712
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Posts: 2677
Joined: Sun May 10, 2009 4:58 pm
Membership No: 20-607
Year: 2001
Model: Trans-Am WS6
Engine: 350
Name: Ian
Location: Nottingham
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Contact:

Re: Strange thing happening to one header gasket??

Post by bhm1712 » Mon Mar 24, 2014 9:46 pm

Ok :thumb:
Ian Hopkinson - Membership Manager & Forum Administrator
Northern England & Midlands Rep

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User avatar
bhm1712
Site Admin
Posts: 2677
Joined: Sun May 10, 2009 4:58 pm
Membership No: 20-607
Year: 2001
Model: Trans-Am WS6
Engine: 350
Name: Ian
Location: Nottingham
Location: Nottingham
Contact:

Re: Strange thing happening to one header gasket??

Post by bhm1712 » Tue Mar 25, 2014 10:17 pm

i think this must be paint actually - it seems to be burning off, and it appeared in other places today after a full heat cycle where there is no possibility of being a leak.
Ian Hopkinson - Membership Manager & Forum Administrator
Northern England & Midlands Rep

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SUPERCHARGEDGTA

Re: Strange thing happening to one header gasket??

Post by SUPERCHARGEDGTA » Tue Mar 25, 2014 11:41 pm

:thumb:

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