Originally Posted by
dfilo456
The Piston Does Not Look Broken In No Dis Coloring At All What Kind of Fuel Did You Run I Change Are Rods When We Get Play At TDC Almost 1 Gallion Every TIme OR Close
hmmmm...
to break in the engine, i idled it on the box for 3 tanks. then on track for a further 3 tanks, and leaning top end thereafter.
Race tuning only started about the 10th tank or so.
I was using Mecca fuel with 25% nitro content. it does not state the % of castor, but some pple who also uses it at my local track rates the castor % at approxiamtely 12%.