vapour lock

[smokinjoe00]

i run 94 sunoco in my 602 now, will mixing it with higher octane race fuel help in hot afternoons to prevent vapour locking im getting on restarts?

[Chico]

I'm not a gas guru but if you're truly vaporlocking I wouild look for the reason why other than the fuel Maybe a line too close to headers efc are you sure it's a vaporlock and not a carb prob or fuel press prob etc I'm sure the guys that know will want all this info to help you jmo

[Egoracing]

It will not help as the boiling is happening without or with very little pressure, The problem needs to be addressed and fixed.

[joedoozer]

Yeah I wouldn't mix fuel to solve a problem like that, especially at $9 a gallon. Get that supply line away from the header, and insulate it. Worse case you need to make a sheet metal heat shield to protect the fuel log. After a race crack the hood a little and shoot your carb, fuel log, regulator, line to the pump with an infrared gun. See what temps you are getting. That will get you some data to share with people. And maybe help pinpoint the problem.