Ron:
The test glob of Graco Hylomar (221-556) is still putty like in
consistancy, which agrees with the manufacturer's statement for
operating characteristics.
Thin smears feel dry to the touch, but the thicker areas can be easily
moved around. The consistancy feels sorta like warm starburst candy if
that helps. Don't know if you ever tried smushing starburst candy
together as a kid.
Personally, I was in the UK and they were called "Opal Fruits". Made to
make your mouth water!
Sorry, got into a digression.
Back to recommendations.
I used to use Gasketcinch type products (setting contact rubber
adhesive) on gaskets that did not have thermal expansion issues such as
engine front and back plates, the joints would be very leakproof but
disassembly and cleanup were a real problem. Now the only place I use
this type of material is gluing the valve cover gasket to the rocker
cover. I grease the other mating surface then make sure not to
overtighten and crush the gasket.
I'm now using Wellseal non setting compound on all thin paper gaskets
and have been using UK sourced Hylomar on areas that need some form of
gap filler such as the rear main area of oil pan gaskets and V8 intake
shim gaskets. On the next build I'll give this Graco Hylomar a try since
it's acting like the Jaguar stuff I have been using.
I've never really had problems sealing transmissions as the paper
gaskets just colored with sealant do the job if you are careful to
remove burrs from the mating surfaces.
Kelvin Dodd
> -----Original Message-----
> From: mgs-bounces+doddk=mossmotors.com@autox.team.net [mailto:mgs-
> bounces+doddk=mossmotors.com@autox.team.net] On Behalf Of Ron Fine
> Sent: Thursday, August 09, 2007 12:03 AM
> To: mgs@autox.team.net; healeys@autox.team.net
> Subject: [Mgs] Gasket sealants
>
> I am putting my rebuilt transmission back together and once again I am
> stumped
> on what gasket sealant to use. There are several large paper gaskets
with
> large areas to seal between machined surfaces that are not perfectly
> smooth.
> These are subject to constant oil baths and critical if I am going to
try
> to
> stop the usual oil leaks. (I know, a hopeless cause, but I enjoy the
> challenge!).
>
> I just looked at the Permatex web site and there are dozens of
products,
> all
> sounding like they would do the job. I would just like to get some
> opinions
> about what products others have used successfully. Some of the
Permatex
> products are to be used without a paper gasket and others are called
> "sealants" for use with a gasket. By the way, Permatex products are
the
> only
> ones that are sold by all the auto parts stores in my part of Los
Angels.
>
> Any suggestions, advise or opinions would be appreciated.
>
> Thanks,
> Ron Fine
> 61 BN7
> 66 MGB
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