I second this question for those who know.
I broke my primary (spider) last season on an 06' M7, which has the 8 1/2" clutch, and put up a thread on here on the best/cheapest way to fix or replace.
The more popular recommendation was to get a new, uncalibrated clutch. Well, I just received the new one in the mail and it is an 8 1/4". What do I do?
I was planning on getting the 10.4 secondary sheaves in the future. If I get them will I be at the same belt length as an M8 and all will be good? What do I do about the steel plate on the back of the stock primary? I believe that I read a thread about how the M7 doesn't run very well without it. Something about needing the weight on the secondary for the balance of the motor....
Will the plate from the larger clutch fit on the back of the smaller clutch?
Hope I'm not hijacking your thread Randog