quick-z Posted April 19, 2005 Report Share Posted April 19, 2005 Im doing a topend rebuild for the first time on shee.The standard bore is I think 64mm,Is it safe to go to .80 66mm and make it a 370cc .Or will that take reliablty out of my motor Quote Link to comment Share on other sites More sharing options...
white trash Posted April 19, 2005 Report Share Posted April 19, 2005 Dont waste the sleeve. Your not going to get that much, if any power out of boring it. I'd only take it 10 or 20 thousandths. Porting is where the power comes from. If more power is what your looking to acheive with punching it out your looking in the wrong direction. And to awnser your question. No,going 80 over wont reduce your reliability, however it will limit the number of times you can rebuild after. I think you can safely go 90 over then you have to re sleeve. SOmeone correct me if im wrong on that Quote Link to comment Share on other sites More sharing options...
BigRed350x Posted April 19, 2005 Report Share Posted April 19, 2005 Dont waste the sleeve. Your not going to get that much, if any power out of boring it. I'd only take it 10 or 20 thousandths. Porting is where the power comes from. If more power is what your looking to acheive with punching it out your looking in the wrong direction. And to awnser your question. No,going 80 over wont reduce your reliability, however it will limit the number of times you can rebuild after. I think you can safely go 90 over then you have to re sleeve. SOmeone correct me if im wrong on that 357267[/snapback] you can go to 100 over. Two of my bikes have gone that far and run for about two years before we re-sleeved. Quote Link to comment Share on other sites More sharing options...
CowboyBanshee Posted April 19, 2005 Report Share Posted April 19, 2005 only go as far as needed, i concur that its a waste to go more than you need. Quote Link to comment Share on other sites More sharing options...
quick-z Posted April 19, 2005 Author Report Share Posted April 19, 2005 Thanks for the advice guys.Im just going to see if they can just be honed, and send them to eric gorr for mo better every where port; Thanks again Quote Link to comment Share on other sites More sharing options...
fixitrod Posted April 19, 2005 Report Share Posted April 19, 2005 If you go to far the cooling efficency get worse. You can get hot and cold spots with the cylinder wall to thin. Eric Gorr will def hook you up. Quote Link to comment Share on other sites More sharing options...
bkabina Posted April 20, 2005 Report Share Posted April 20, 2005 you can go to 100 over. Two of my bikes have gone that far and run for about two years before we re-sleeved. 357273[/snapback] I have a set off banshee cylinders that run .040 blaster pistons.Thats a little more than 100 over.But it only works with a long-rod set-up.And I don't recomend boring anymore than you have to. Quote Link to comment Share on other sites More sharing options...
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