i recently ported my header and was looking on doin the sleeve and crankshaft....i dont want to do piston or rod becasue that messes with the balance or timing or w/e..........so has anyone done this by themselves? i know it might be a stupid question but u never know! [sm=spinnyeyes.gif]

yeah ive done Hundreds ! BTW its almost impossible to balance a single piston engine...

I've done mine. Nothing fancy just a few improvements here and there.

Massive - it's not almost impossible to balance, it IS impossible to balance. A good medium is to measure the weight of the piston + wrist pin + conrod, then take 55-60% of that and make a weight that you put on the crank pin. With that done you go ahead and balance the crank including the weight. This gives a good dynamically balanced engine.

hmmm i gues i was confused on the "balancing thing," so thank you and did u guys mess up porting the engine the first time? or was it quite simple with a steady hand/dremel and patience? what did u guys do to your engines? thanks

If you don't touch the timings and overall dimentions of the port nothing will get messed up. Just rounding off the edges on the OUTSIDE of the liner is safe and doesn't harm anything. Other things I've done is to knife-edge the lower part of the liner and cut away the skirt of the piston if that's not already done.

Yeah same here ... but the first thing i dod was alter inlet timing on the crank extended it by about .5mm

hey massive mods...i might be interested in your "services," some time soon.

Be glad to help you out ! Just pop me an email for prices etc