Hey fellow HCS'ers i have a question for you guys. I own a '95 RXL650 Triple with a triple 38mm carb kit. The previous owner told me that he liked the carb kit better because he had EFI problems with the original unit. The kit was professionally put together and nothing is rigged up. I just broke a piston skirt on it, no interal damage. It had 130PSI on all cylinders even after the break and no cylinder, head or intake damage occured. Just all the pieces blew on the exhaust or into the intake when it backfired . So i just replaced the center piston, with a new set of rings and gaskets. I also cleaned out all the little pieces of metal but most of it blew out the exhaust when it was running. When the piston skirt was in the process of breaking the sled bogged horribly of the line and would barely take off but once it hit 6000 rpms it would take off like a raped ape. It also would no longer idle. I just rebuilt it and got it all back together and now i'm stumped. I ran it with the fuel valve off (on accident didn't remember to flip it back on) and the sled ran great. Now once i flipped it on it started to have a low end bog and stopped idling. I'm thinking its flooding itself out and needs to be ridden harder to get cleared out but i don't want to be hard on the motor during the first break in stages. What are your opinions?????

Here is a video of it when i first got it.
http://youtube.com/watch?v=71oLqJbCXw8

Nevermind, i got it all taken care of a few minutes ago. Just one of slides came unhooked. Thanks anyways. Pete

Hah, now that's funny, PolarisBum!! Hope Pete has a sense of humour too

If you didnt have it bored out I hate to say it but it is going to break the skirt again. The cylinders get out of round and the skirts start slapping the cylinder and it will break another one. My dad found out the hard way when his was approaching 7100 miles and thought he could get another year out of it. Long story short, he ended up re building it again and boring it .020 over.

Well to tell you the truth, the skirt break was 100% Mechanical failure, the piston was not cast correctly. You could sell a light crease mark following the break. The cylinder was to clean to even consider boring out. There was absoluetly no damage done to the motor which was completely freak.

Ok well then never mind if it was a bad cast piston and no damage was done. Just didnt want any one to end up like my dad if I could help them out. Luckily my cousin is a machinist by trade and he has done all our engine work as far as boring cylinders.