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Author Topic: XBR big bore kit?  (Read 873 times)

SteveC#222

  • Posts: 1900
XBR big bore kit?
« on: October 05, 2007, 10:02:47 PM »
A bloke down the pub sold me this big bore piston kit for the xbr.  Do you think I'll get away with a rebore or will I need to re-sleeve?


Big bore kit

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guest27

  • Guest
Re: XBR big bore kit?
« Reply #1 on: October 05, 2007, 10:22:15 PM »
The sleeves are fine - but the legs are a little short.

R
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guest295

  • Guest
Re: XBR big bore kit?
« Reply #2 on: October 06, 2007, 08:28:10 AM »
The American thumper forum had a section on tuning, and if memory serves correctly there were always new sleeves for big-bore pistons. On the other hand, I can't see any reason one couldn't bore out the existing sleeve as long as it doesn't go too large. I think 600cc is the outer limit, but there were problems with bores approaching 100mm. And of course the head's a worry.
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guest7

  • Guest
Re: XBR big bore kit?
« Reply #3 on: October 15, 2007, 07:06:50 PM »
Just to clarify, this is what Steve was alluding to:



Cheers
GC
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