X30 What is the best performance piston to wall clearance are m doing the top end ready to order piston. When checking original blueprint that popular engine builder did it was .0065 checked motor with about 8 hours on it. Thanks.
Use around 0.005” with the new pipe. Here’s a link with some more info.
http://www.remoracing.com.au/iame-engines-m/iame-x30-125-tech-info-downloads
How about ring gap are you on the tight side .25mm or do you run looser like the piston.