Messages

1

Technical / How much porting do you really need to do it you bore your cylinder over?

« on: July 16, 2013, 12:54:36 AM »

To follow up with my previous answer and to address the guys original question. Yes you should address the porting because the port openings are now smaller and port timing has changed.

2

Technical / How much porting do you really need to do it you bore your cylinder over?

« on: July 02, 2013, 01:18:28 AM »

Find a funnel cut off about 10% of the length from top. What happened to the opening? Now remember you have a larger capacity air pump trying to breath through this "new" opening.