UPDATED VMAX PORTING. 3:16

[YAMMIEGOD 3:16]

ANYBODY HAVE TEMPLATE ON THIS UPDATE. 3:16 (yammie tony)

[Vmax540]

Tony, I do not have a template this, here is the best I have http://www.vintagevmax.com/84portingspecs.htm

[mrviper700]

Tony, youll need a 90 degree head foredom tool to do the rear transfer ports.

[MSASRX]

I was reading the whole Vmax performance guide the other day and am curious about this topic also...whenever i get a chance to start my 87' project that is. Do you still have to modify the Primary clutch Spider for the "special" primary spring they reccomend?? Or is there a clutch spring to use in the stock yamaha comet that works good for the claimed 8-1/2 horsepower increase?

[YAMMIEGOD 3:16]

YOU CAN FIND A UPGRADED SPRING FROM COMET TO USE PRETTY EASY. 3:16 (yammie tony)