[TButtrick]

I'm running the 351W expansion tank from Enzo and noticed that my 16lb. vented cap is not quite tall enough to get a good seal on the bottom pressure relief seal surface. It's spitting out coolant into the overflow when it doesn't need to. Anyone know what cap gets the job done? I'm looking for one that has a flat round top so I can fit a cosmetic billet cap over the standard top.

Thanks in advance.