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RE: head gasket, any mods while I am in there?
>In message <Pine.SOL.3.91.980606174629.1963A-100000@apollo> "Graydon D.
Stuckey" writes:
>> ... but I found out that the exh ports were _much_ smaller
>> than the gasket so I gasket matched the exh ports.
>
>BZZZT!
>
>They're meant to be smaller. The lip is quite deliberate.
Not necessarily ... I'm in the process of preparing a head myself and while
the exhaust ports are also smaller than the manifold gasket, the manifold
gasket is itself smaller than the manifold. As such, enlarging the port to
match the gasket still preserves the anti-reversionary lip ... of course,
this can vary from head-to-head & manifold-to-manifold. That said, getting
the manifold to line up with head accurately and repeatedly isn't an easy
task and much of any potential gains to be had can be lost if this detail
isn't addressed ... but Graydon already knows that and being Mr. Meticulous,
I'm sure he's addressed this as well. :^)
________________________________________________________________________
_ _
/ | _| o | \ _| o Jeffrey Goggin
/__| | | / | | __ | | | | / | | audidudi@mindspring.com
/ | |_| \_| | |_/ |_| \_| | http://www.mindspring.com/~audidudi/
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