University Motors Limited, Ada, Michigan

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Goldstar Products

6490 East Fulton
Ada, Michigan 49301
616.682.0800

Valve Stem Seals

Hi. I hope you had great holidays. I haven't sent you a question in a few
> years, but I sure would like to know what valve stem seals your shop uses
> when rebuilding
> MGB cylinder heads. I've heard the little o-rings that came w/ my rebuild
> kit aren't the way to go. Any recommendations with manufacturer and part
> number would
> be very helpful at this point in my project.

We use Felpro SS 70373 which fit some sort of Chevy truck. They are
the perfect replacement for those little O rings, which, while better than
nothing, just don't do a very good job.

Be sure to have your machine shop open the bronze-silicone valve
guides (if you're using those) to 0.002 instead of 0.0005 or the valve stems
will gall.