Re: modified 66cc Ht in bmx
Alrighty then.
We pulled the head off. Running super clean on the klotz oil but we noticed some FOD to the chamber. Turns out the chrome cylinder wall is peeling and chopping up the engine
so. We pulled the jug. Bore it out and I am now busy machining a sleeve from some 6085 ally. It will have a tapered bore and be nickel plated. The piston will be an interference fit at TDC and run no rings.
our new 20.5mm walbro carb will be modded to run methanol and the portsvand timing re-evaluated. Good chance of crankcase reed induction.
pictures to follow as soon as I get to my pc