>Matt Kulka Writes:
>
> I can't speak for MGA's exclusively,
>but nearly every radiator cap I've ever seen uses the same shape - it's
>only the pressure rating that's different - so generic is fine.
>
>Lane Rollins Writes:
>
>Get an expansion tank from a rubber bumper car and run the over flow into
>it, then put at least say 7lb cap on it, maybe 13lbs. It needs to be the
>cap for a B not the A, the lengths are different
>
>I can't speak for MGA's but for Spridgets with the older vertical-flow
>radiators generic Radiator caps are too short. The top of the cap seats
>fine but the spring does not press the bottom of the cap down far enough
>and you have an atmospheric pressure system. Given Lanes comment, you
>should make sure that whatever you use fits.
If memory serves A & TD/F caps are 1" long and the B uses the more common
3/4" long. I'm talking about the length of the plunger not the width of the
cap. On the C the expansion tank uses the same as a B, but the top one is
just a filler cap with no plunger.
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