Re: Stock Puch Porting questions

• Author: Eric (---.156.234.43.Dial1.Boston1.Level3.net)
• Verified User: neutral4x4
• Date Posted: 05-17-08 20:10

First off, you NEED to read up on this before you start!

This is what I do and I’ve never had a problem:
Shorten the piston to where the casting mark is (if you have a low torque piston). Widen the exhaust and intake to 67% of the bore or to be on the safe side a little less (the bore is 38mm so don’t go over 25.46mm). Use base gaskets to raise the cylinder until it has the powerband you want it to have. Measure the thickness of the base gaskets you take off and raise the exhaust port that amount. That should give you the results you want without having to do a lot of math.

Good luck,
Eric