chevronracer

It is very easy to divide a circumference into four equal parts, all you need to do is make a piece up that goes in the middle of the rotor to sit your dividers on. then you can mark out diameter of 108 and divide into four in a different position on the rotor. and as far as drilling the disk itself for venting, these also must be uniform to eliminate risk of rotor being out of balance.

yes sorry, just drill new holes right in between the original ones.

This engine was out of the isuzu Piazza, i have one in a vauxhall Chevette hatch. does anyone have info on engine or a manual or something, i have searched for a haynes manual on the oiazza but cant find one.

i can do it for you, as long as it is four stud it is easy to do, just go 90 degrees to exisiting holes. i have done a few conversions before. you can call me on 021967723 cheers Dwight