Originally Posted by
TonyL
I've never owned the early '85, John, but were they 25mm?
You will know better, as you will have, no doubt, owned / worked on these, but if it's not a silly long stroke maybe best left with the standard dimensions?
My main concern would be over the cutaway at the top of the rear of the piston to create clearance for the scope ramp. My guess would be that, at the very least, a tune should ensure that there are no sharp edges left in this area and an application of high content moly paste to protect against any potential wear.
I think the V-Mach kit includes a replacement (exchange?) piston with a synthetic band at the rear?