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Old 10-29-2018, 10:54 AM   #11
Senior Member
Join Date: Jul 2012
Location: State of Jefferson
Posts: 1,488
Default Re: Copper head gasket or best Kevlar?

I recently installed a Best brand kevlar (they call it graphite) head gasket on a Model A. I followed all directions exactly. No water seepage, however when pulling a hill in 3rd gear at 45 MPH or so, the combustion gasses are getting into coolant and blowing the water out the radiator overflow.

Yes, I have re-torqued it (read above where I followed ALL directions). The block/head are flat.

Going back to copper gaskets. No problem with those.
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