Hi guyys i have a 91 mc22 im going to do a test on the cylinders what psi should each piston be and does anyone know if the ebay pistons are any good Cheers guys
Got a link for the eBay pistons? Would need to look at the service manual for compression test specs, but generally speaking you need to do it with throttle at WOT and the numbers should be close between cylinders. If readings are low, try a squirt of oil in the cylinders and retest. If numbers improve you have worn rings. A leak down test will be more comprehensive.
remember to prop the slides wide open with something also otherwise the readings you get will be essentially meaningless On the ebay pistons read a little on this thread - page 2 https://2fiftycc.com/index.php?threads/dave-moss-cbr250rr-mc22-racing-in-california.8371/page-2 Mike also references these pistons on another forum http://www.400greybike.com/forum/viewtopic.php?p=371607&sid=91d093d80d47dc772662ecf29705701c#p371607 Synopsis is the pistons are fine - the rings were however a letdown
