[Fot] trt 3/4 head gasket

[Tony Drews]

You can't really "grind back" the composite gasket and still have it 
seal.  You need to gingerly uncrimp the sandwich around the valve 
pocket, then cut back the inner asbestos-like material, then gingerly 
recrimp the two copper sides back together.  It's easy to tear the 
copper in the process.

Tony

At 09:59 AM 11/24/2012, Tylerpthompson at yahoo.com wrote:
>I pulled the head off of mine a few mons back. If folks recall, I 
>broke 7 of 8 tops of the outer valve springs and one inner.  I am 
>fixing that and checking geometry.
>
>I do have oversized valves and 89 bore, and I found my Payen A330 
>gasket was burnt where the gasket was not ground back.  My sleeves 
>are not ground back as well.
>
>Can you grind back the copper Payen gasket with no issues? I will be 
>feathering back the sleeves as well.
>
>Also, does anyone know the correct valve spring height?
>
>Thx
>
>Ty
>
>
>Sent from my iPad
>(Please excuse any errors or typos)
>
>On Nov 15, 2012, at 7:41 PM, Joe Alexander <n197tr4 at cs.com> wrote:
>
> > Ditto...Using Payen for several years now and has been one less 
> thing to worry
> > about.
> >
> >
> >
> >
> > Joe Alexander
> >
> > Subject: Re: [Fot] trt 3/4 head gasket
> >
> >
> > Like Tony we use a stock Payen gasket notched to fit the larger 
> valve with no
> > problem. My take is that one must make sure the head & block are 
> flat & true
> > &
> > properly installed.
> >
> > Sent from my iPhone
> >
> > On Nov 15, 2012, at 12:36 AM, Tony Drews <tony at tonydrews.com> wrote:
> >
> >> I use a stock composite gasket and will get a season out of it.  I was at
> > about 0.175 milled, am now at 0.130 after my last head gasket 
> problem turned
> > out to be a collapsing combustion chamber in the head problem.  I 
> don't have
> > giant valves (they clear the 87 mm liners), so I notched the liner to match
> > the "mickey ear" of the stock gasket so there was something 
> supporting it on
> > one side in the pocket that disappeared.  I put the seam side against the
> > liner then.
> >>
> >> Tony Drews
> >>
> >> At 12:18 PM 11/10/2012, KENMUN at aol.com wrote:
> >>> anyone having success with the stock composite head gasket on a milled
> >>> head. my head has been milled .150" and the intake valve 
> pockets are gone.
> > i'm
> >>> not having much luck with the steel gasket.
> >>> thanks, ken m. tr 3 vintage racer.
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