Thanks Joan. smile

The piston I wonder if there is any profit to modify is the one that came with the purchase of the CFX cylinder.

The image of the piston in the post above is just an example image from the internet of a piston that someone else modified.

My piston has a total length of 49.97mm from top to bottom.
From top edge to bottom edge it is 47.02mm

So if I understand you correctly, you can/should shorten the piston approx. 2mm with a width of approx 16mm i the piston is the older long model ?

If the piston is the newer short model then shorten it only half the width (8mm) of the intakes left side ?

Attached Images
kolven.PNG (79.06 KB, 76 downloads)
Last edited by Stordrulen; 02/10/23 09:00 PM.