I just recently came across a set of cases that have been machined to accept a pilot cylinder, I also have the cylinder its on it 1st bore size of 80mm. I have a 7mm crank w/ a yz 490 rod

I know packard racing has built these.

Anyone ever have one or see one run??

I was also wondering about the pistons I see some people have put up to a 91mm piston in them I was thinking of goin w/ a 86mm, Just dont knw what pistons there using.

Any help would be greatly appreciated. Thanks

 

ttt

 

I spoke to Tim at titan racing I am goin with a 85mm piston w/ yz 490 rod its gonna be a 450cc should do around 70 tq and 90ish hp I was told.