[Healeys] Arghhhhh ...

[richard mayor]

It's very common in V-8 engines with headers to have gasket problems at the
header flange that mates to the head. We use hi-temp silicone on both sides of
the healer flange gasket. Check it frequently after installation and keep
tightening up the bolts. After awhile it seems to settle in and they don't
leak. If you do not follow this routine, the header gaskets WILL start to leak
(in my experience).
I hope this info may be of some help with your problem.

Richard Mayor
BN7L-466  Vintage Racer
Portland, Oregon




> Date: Sat, 27 Mar 2010 15:19:13 -0700
> From: bspidell at comcast.net
> To: healeys at autox.team.net
> Subject: [Healeys] Arghhhhh ...
>
> I'm at my wits--what's left of them--end.  I've replaced at least a
> half-dozen exhaust flange gaskets in the last couple years (the ones
> that go between the exhaust manifold and downpipes).  I've flat-filed
> the downpipes flanges, and the manifold flanges are smooth and flat.
> I've used the 'std' brass nuts and regular 5/16" with split washers and
> anti-seize--which seem to work the best--but I keep blowing out the
> gaskets.   I've been religious about keeping the nuts torqued up.
>
> The contemporary gaskets seem to be an unknown fibrous material
> sandwiched between two thin, perforated pieces of a thin, metal-like
> material--have also tried the ones made of copper donated by a generous
> Lister--but no matter what I do the gaskets blow out.  The filler
> material--whatever it is--seems to turn to a white powder which, of
> course, is not a good sealer.  The latest replacements I got from
> Moss--the metal is kinda yellowish--look like they might be of a
> different construction/composition, but I'm leery at this point.  I even
> tried to get a custom copper gasket shop to make a set for me, but they
> flaked out.
>
> Anyone have a source for gaskets that don't decompose and blow out?
> Man, I'd give anything for a NOS set of asbestos-filled gaskets, OSHA
> be damned.
>
> Or, will any of the goops work at the high temperatures?
>
> TIA
> Bob
>
> --
> *******************************************************************
> Bob Spidell           San Jose, CA            bspidell at comcast.net
>
> *******************************************************************
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