the only 750 high comp pistons i've found are from ferracci. i have some of them that i got s/h in my 750.
the 800 chamber will be bigger, as it has 900 sized valves. the std 800 pistons have quite a big dome on them, like a high comp 750, to compensate for the larger chamber.
the 800 cylinders are the same bore and height, but the locating dowel location is different and the style of the oil supply passage at the rh rear is slightly different.
i've been thinking of putting my 750 back to std stuff and selling the hot bits - the 42.5/37mm big valve heads with 900 cams and the ferracci high comps. it has 76hp, up from 65 with std heads and pistons.
|