Originally Posted by
WYLDTHING
I have a good racing buddy that has one and he likes it, for the most part. It has an insane amount of pinch!!! He has a gallon through his already, and it still sticks ALOT at tdc! It also runs quite a bit hotter than most engines at this time. It runs good, just has to be set more rich than he would like to help keep the temps down, and that really cuts into runtime quite a bit.
I'll see where it's at after a few more gallons before I make my decision about it.
Brad
lean bottom, rich top on the grenade. they don't like a fat bottom lean top tune, they run hotter. on mine the lsn is flush and hsn is flush with cold plug and 20% cold fusion. just set the idle gap so it will load up after 10 seconds or so, should clear out under that, then set hsn so it smokes till 3/4 straigh (1/2 tank or under), should run in the 220's for 9+ minutes in a buggy. they are awesome motors for any money, i have my 3rd waiting for break-in this week. not so lucky with my first 2, air filter fell off which could have lead to premature bearing failure on the first. then the second i changed the conrod after the first gallon and had a g clip i installed come loose and score up the p/s pretty good. all the other grenades around here have 5+ gallons with no problems or play internally.