Do you need to run Race Gas on a 11:1 compression?
#4
I have a 11:1 Wiseco and have never ran anything but 93 octane pump premium and have NEVER had any problems. If you are still not sure go to www.gthunder.com and click on the catalog and go to pg.15 there it lists octane requirements for the 400ex with aftermarket pistons.
Clint
Clint
#7
I have an 11:1 piston and when I run 93, it pings under a hard load in mid rpm range (exiting corner, climbing hill, etc.). I run a mix of VP C12 and 93 octane (50/50) and it comes out to 100 octane and my pinging is gone. I am not running a timming advancer, but this would allow you to also advance a couple degrees.
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