Nick,
At the stated lift and compression your valve clearance is fine.
Competition engines run 12:1 compression with higher valve lift without a
problem. Just be sure that you maintained your rocker geometry by either
shortening your tubular pushrods (the preferred method) or shimming the
rocker pedestals and are using appropriate performance valvesprings that
match the cam's profile to avoid coil binding and valve float at high RPM.
Greg
CD6250L
----- Original Message -----
From: "Nick Gemas" <gln@worldpath.net>
To: <6pack@autox.team.net>
Sent: Monday, April 07, 2003 8:45 PM
Subject: Re: Head Gasket Thickness
> My head is shaved for 10:1 compression ratio, which closes the gap quite a
> bit. My cam is running .443 lift with new roller rockers so I want to
check
> my piston to valve clearance to be safe.
> ----- Original Message -----
> From: "Jim Swarthout" <jswarth1@tampabay.rr.com>
> To: "'Nick Gemas'" <gln@worldpath.net>; <6pack@autox.team.net>
> Sent: Monday, April 07, 2003 6:56 PM
> Subject: RE: Head Gasket Thickness
>
>
> > Nick,
> >
> > I'm at a loss to understand what possible difference this could make,
> > other than some very slight increase, (or decrease), in compression
> > ratio. The maximum amount that the valves can be opened is approx. .510"
> > With the piston at TDC the valves still don't touch the pistons when
> > fully opened! Piston to valve clearance is not a problem with this
> > engine.
> >
> > Jim Swarthout
> >
> >
> > -----Original Message-----
> > From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net] On
> > Behalf Of Nick Gemas
> > Sent: Monday, April 07, 2003 5:37 PM
> > To: 6pack@autox.team.net
> > Subject: Head Gasket Thickness
> >
> > Hi Gang,
> > I'm trying to figure out my piston to valve clearance and was
> > wondering
> > if anyone knows the torqued head gasket thickness of a stock 74 1/2 TR6
> > head
> > gasket. Thanks !
> > Nick Gemas
> > gln@worldpath.net
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