If you think you can hear noises, then it's quite probably piston slap. Are they single-ring?

You'll be amazed at the difference just a set of rings will make if you've been using the same ones all year! We've all seen it here, where you don't feel the drop off in power over time, and then do a dyno and find you are missing 5~8hp! The transformation in power is astounding sometimes.

If you are racing, then I would expect to do at least 2 sets of pistons in a season, and at least 2 sets of rings per set of piston... at the very least. If it's like every other weekend for 6~8 months, then I would expect to double that if you're serious!
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

Check us out on Facebook! Please "like" our page!