[Mgs] Radiator Support Seal
paul.hunt1 at blueyonder.co.uk
Mon Nov 9 09:38:05 MST 2009
There are two seals. There is a relatively thin rubber strip that goes on
top of the diaphragm and seals to the bonnet, there is also a foam strip
consisting of two larger square sections glued together which seals between
the radiator header tank and the diaphragm.
I ran for years with the rubber strip but not the foam, but found a
noticeably lower engine temperature in hot weather after I fitted it. In
the latest edition of the MGOC magazine there is an article by a chap who
has fitted a cold air feed to his carbs, fair enough, but as part of it he
has removed virtually all the diaphragm! He claims this gives him cooler
intake manifold temperatures, but I dread to think what it has done for his
engine cooling. He's also losing an additional ram air effect if he had
connected his cold air intake to the diaphragm.
----- Original Message -----
> I just ordered the seal that goes between the radiator support/diaphrma
> the hood/bonnet for my '73. The one that I received is foam--are these
> supposed to be rubber or foam?
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