O-Rings (Block) sorry no EFI

[Gary Derian]

Some metal o-rings are vented towards the inside so pressure seals them
tighter.  Some are sealed so temperature causes pressure inside to build.
There are also Omega rings that are shaped like the Greek letter, the open
end is towards the side to be sealed.  These sealing rings are used in
really high temperature applications.  When the Cosworth Vega engine was
developed as a racing engine, it used the sealed rings around the bores.
The block is die case so has an open deck, the perimeter was milled 0.010
inch and sealed with a bead of RTV.

Gary Derian <gderian at oh.verio.com>

> Hi,
>     Where do you get the Wills rings and what type of groove and/or
receiver
> groove is required???  What sizes are available???  Good info, thanks
> -Carl Summers
>
>
> Big snip>>>
> > and a handful of rubber O rings for water and oil seals.  During
> > maintenance, you just pulled the head off, did whatever, wiped the joint
> > with a rag, replaced the rings, and dropped the head back on.  No
> > peeling, scraping, or cursing required, and all the parts are reuseable
> > indefinitely.  Now compare that to one-time-only $100 head gaskets...
> >
> >  Another factor on the Wills rings - even if you manage to unload the
> > joint so far that the ring let gas pass, they're self sealing as soon as
> > the joint returns to normal configuration.  They don't "blow" like
> > conventional gaskets, though continuous operation in a non-sealed state
> > would eventually erode the seal areas.
> >
> >  Old, old technology, of course.  Dates back to the 'teens, from
> > aircraft engines.  In a few years the Japanese will "invent" it again,
> > and all the techno-pundits will swoon in delight, as usual...
> >
> > ==dave.williams at chaos.lrk.ar.us======================================
> > I've got a secret / I've been hiding / under my skin / | Who are you?
> > my heart is human / my blood is boiling / my brain IBM |   who, who?
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> >
> >
> >