BannedCR500Riders.com

By now you all probably know that I had the ghost bike from hell that I just couldn't get working. Well I got the bike back about a week ago from Mike (teem trubble) and I just took it out today and... wow the thing is a totally different bike, it sounds clean, throaty and really hauls, I never hit 5th gear it in today hell not even the top of 4th, its insane.

I'll be sure to get some video of it soon so you can compare how it sounded then and now, totally different.

GPS track if interested: http://www.xylicon.com/misc/01-17-08.kmz

So what was wrong with it?

Ported&Polished wrote:So what was wrong with it?

X2

Crap totally left that out,

The cylinder was completely fucked to say the least. It was tapered at the bottom causing the piston to drag. So when I rev it up the piston would expand and the taper created severe piston drag limiting my revs.

I never would of thought a cylinder could taper itself.

It was probably machined that way from your last rebuild. I don't think a sleeve can get smaller with use, do you? I'm surprised you didn't squeek a piston if that was the case.

I worded that wrong, it was most likely honed and or bored by the dumbass that owned the bike before me, I've rebuilt it since then and had a local machinist bore the cylinder for me, I dunno how they could've fucked it up that bad.

Xylicon wrote: had a local machinist bore the cylinder for me, I dunno how they could've fucked it up that bad.

Bingo, there is your reason right there. Garanfawkingteed it was the machinist, it's way easier to fawk a cylinder up than to do a good job. I would bet my life that the guy didn't use a torque plate, few do.

and probly half that do use torque plate still manage to fuk up the cylinder