[2stroker]

Hi,

After a long search through the forum, I would like to share my experience with you Gassers:

I have just raised the cilinder on my 300 to clear the exhaust port (total amout of gaskets of 1,35 mm!), and have cutted the head to achieve the compression of 180 psi cold and 165 psi warm engine. The squish is about 1,5 outside to 2,4 mm inside edge. For now I will not reshape the combustion chamber, and I measured it 23 cc.

What is the main difference between aligned porting and the previous setup?

the question is: should I re-time the ignition to compensate the porting time change?

The bike has N1EG needle on first clip, 178 main and 38 slow. The spark plug seems to be ok, but the bike does not run well from idle to half throttle, beeing hesitating like too rich until the power valve opens. These symptoms already were present before changing port timing.

I removed a long time ago the 2 shims from power valve preload. Could it be the reason for the hesitation?

Thank you in advance,

Carlos