crazy4wdracer

iTrader: (25)

I just got an STS .28 engine in a trade. It only has a quart of 15% fuel ran thru it. What will I need to do to run Trinity Platinum 20% fuel? Add a head shim or not? Are they good engines, I havent heard much about them.

rossoh10

iTrader: (10)

You don`t have to shim to run 20% and you should have to shim to run 30% either......I don`t know how good the .28 is but I have a friend than run the .21 and there fast....I wouldn`t say there the fastest but there no a slouch....I would fatten it a couple hours on the HSN and a hour or 2 on the lsn and baby it for a couple tanks before you start dropping the hammer on it.You want it to get use to the new fuel...If it is running fat when you first start it then there is no need to richen it up...Just baby it for a couple of tanks

crazy4wdracer

iTrader: (25)

Will do. I appreciate the help.