Quote:
Originally Posted by Bill Pomponi
There appears to be very strong opinions on both ways........foam in and foam out. C'mon guys........Which is it?
We've left the foam in w/o any problems
Definitely run Marvel Mystery throught the entire fuel system........cell to carb. I'm sure everyone has witnessed residue from racing fuels especially VP !
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Foam in , there's really no debate on the subject . It serves a very important function .
As to foam deteriorating , there are several reasons that it might . One , the foam in race fuel cells is not exactly the same foam as you find at the local Home Depot . Foam not designated for fuel won't work , at least not for very long .
Another reason for foam deteriorating is mixing of fuels . Gasoline requires one type of foam . Alcohol fuels , including E fuels will require a different foam . Some manufacturers may have a foam that they feel is compatible with all types of fuel . Ask their opinion . And sunlight harms the foam , so don't take it out of the cell and leave it on the work bench over the winter .