Originally Posted by M7H
How can you tell?
What's the thickness of the shim behind the flywheel?
Also the conical under the flywheel can differ in size.......
This 10.2mm is not the same for everybody.......
Conical behind the flywheel is the same for everybody. Mega Picco engines have a special one that no other engine can use. (Their shaft is smaller than NR based ones).
This is for Mugen MTX-3, Im pretty sure it changes for other car brands. This length is measured with a caliper from the top of the shaft (no screw) to the spring adjuster (the bottom part). If I aint mistaking, its about 1 to 1.2mm if you deduct the length of the crankshaft.