430 air cooled cr motor

WHAT WAS THE BEST YEAR FOR THE 430 CR AIR COOLED MOTOR?

AND WHY WAS IT THE BEST IN YOUR OPINION?

ALSO, WILL IT FIT MY 1981 430 FRAME?

THANK YOU IN ADVANCE FOR YOU INPUT.

With different inserts at the swingarm and a change of the cylinder studs and top end you could choose from up to 1988. I have made my own inserts hardened them myself in caseite powder and vacuum epoxied them in place. If the cases are good you could just press them in. Maybe even just sleeve down from 14 to 12mm. Otherwise I suppose you would try and figure out when the heat treatment on the gears was best.

Fran

The last year 1982! The 1981's had some gear problems the first year.A 1983 430WR motor would be the best,very rare.