Originally Posted by Mie3R
from my experience it only last for 1 or 2 full day race. but dont expect the performance as good as new engine but at least it still competitive. it works well if ur sleeve is still new n in good condition..
If it's done correctly a pinchen piston-sleeve set will usually last longer than a new one.
In my opinion, there is only one guy that does it right and that's OSROCKET.
He did countless sets for me and a lot of people I know and everybody loves it.
That's what he says about it on his EBAY SITE
"I developed this process approx 7 years ago, and have done resizings for all of these guys that are now doing them with manual presses and pinch rings (don't be misled and get a out of round sleeve), the way we do it has been very effective, magazines have done articles and longevity tests on it and support it greatly, its done on a cnc controlled machine that is very accurate, there is no guessing needed, I can set them medium or light pinch whatever you prefer, just make sure that you mark the parts inside the package when you send them in. Normal turnaround is 2 to 4 days, if you need a rush job email me to give me a heads up, and you can mark the outside of the package with a marker so I can pull it. We have been racing the larger races (150 entries and up) and my son always runs pinched engines and usually always makes the A, and we constantly get guys coming into our trailer asking about his engine and how we get it to run that way, If you need any assistance with disassembly or reassembly deck clearances, one of us will always be available to help out.
What you need to do after you purchase the auction is take your piston/sleeve out and you can leave the rod attached if you want, and send it in and we will resize it and send it back with a nice info sheet on carb settings and breaking back in.
Shipping is 5.00 for priority mail with delivery conformation, packed in a sturdy box so no damage occurs.
Also check out my multiple discounts, and email from www.osrocketracing.com
if you have any other questions.