Quoting "J. Barry Waterland" <artforu@earthlink.net>:
> I'm just about to replace the manifold gasket on my 77B, and wondered about
> using a gasket compound. I have never use one before on this, but would be
> interested in the thoughts of the group.
The consenseus on the list in June was "no, never".
> Incidentally, I was reminded of a couple of things as I removed the manifold
> this morning that might be worth passing on.
>
> When I first bought the car, on hot (southern California) days it would
> occasionally suffer from vapor lock when starting again while still hot. I
> realized that the PO had left off the heat shield (in his "wisdom"), and
> replacing it fixed the problem permanently.
I had the same problem. I didn't buy a new one but tried making one from
a cookie sheet and heat shielf fabric from Summit Racing. It turned out
to be too small but did help the situation.
I didn't put a lot of effort in this though, since my intent was to put
a set of HIFs on the car, which I did in June.
Makes a world of difference.
> Second thought was that I had suffered from a couple of exhaust manifold to
> catalytic converter gasket failures. As most of you will know, this is real
> pain of a job, so the third time it happened I made a 1/16" thick copper
> gasket, and then annealed it over the kitchen gas ring. By the way, those
> "crow's foot" wrenches are great for reaching those impossible nuts.
I found when I took the old manifold off that I had this exact problem. Probably
contributing to the vapor lock problem. That's all gone now, the car is
quieter,
runs better, better gas milage, idles lower and more smoothly. It's much more
reliable, and I have much more confidence in it.
>
> Barry Waterland
> Duarte, CA
> 1977 MGB Roadster
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