Needle bearings that go in the connecting rods small end.

 

wouldnt a new wiseco come with new everything like rings, bearing, piston, wrist pin and the little tiny clips.

 

bearing is seprate, everting else is there tho.
this is they guy I got my piston from.sledpartsguy

 

Mudmaster I'm not sure if porting before boreing is a good idea The ports have to be chamfered so the rings don't get caught. so it would have to be ported bored sent back and chamfered. also boreing can sometimes effect port timing that can be corrected when porting maybe Bubba well tell us whats best[img]i/expressions/face-icon-small-smile.gif[/img].

Jeff

 

Well if ya have it bored then send it to Bubba and he slips porting it [img]i/expressions/face-icon-small-shocked.gif[/img] Then there goes your nice new bore[img]i/expressions/face-icon-small-sad.gif[/img] Bubba ????

 

BUBBAs the man, he did my porting and the thing goes back on its wheelie bar all the time!

 

Yep thats the part that scares me too whuggs slipping is always a possablity. But chamfering is the part where your most prone to slippage and I think but im not sure has to be done after boreing. I'm sure Bubba will tell us whats best I don't really no but just wanted to chime in on the chamfering In case it has to be done after boreing that way mudmaster won't have to send his cyl out again.
Or maybe shops that bore two strokes normally chamfer the ports anyway???I guess make sure the person doing the boreing understands the need for this.

Jeff

 

Bubba wanted to port mine before boring it, then I had a local shop bore it. The ports looked chamfered when I got it back from the machine shop.

 

Cool
Thats good to know well if the machine shops are doing the chamfering then I agree 100% have the porting done first all I was concerend with was the chamfer.

I had a under experinced shop bore a cyl for me once and not rechamfer it and a ring broke because of this[img]i/expressions/face-icon-small-shocked.gif[/img]

Jeff

 

I dont use a stone or carbide to chamfer the ports with. I use a medium grit cartridge roll. The top and bottom of the ports are the most important to do, although I do every edge. If you accidentally slip with the grit roll, then it's no big deal. If you slip with the carbide or stone on the liner, then you make a nice big spot. If someone is only going to bore .020, then port timing will not be affected enough to notice. If someone wanted to go .040 or more (big bore,etc.), then I would recommend the rough cuts be done, then port it, then the final hone and fit to keep everything in line.