Quote:
Originally Posted by
Kev
There are a few of us that have done a 102mm conversion. I am helping with a 105.5mm XTX conversion next weekend.
You can use any Raptor 700 piston, if you are using 98 or 95 RON fuels you can run a compression ratio up to 11.5:1.
I would only use a CP piston as this piston has the longest piston skirt out of the JE & Wisco Raptor 700 pistons. My last JE 102mm piston kit only lasted 10000KMS (6K miles) & developed a rattle because of the short piston skirt. You can buy a corrected deck height 11.5:1 or normal 11:1 CP piston I would only use one of these. You can bore the standard XT660 cylinder to 103mm to make it a true 700cc, this has already been done read below.
Have a read in the modification index you will find more info on big bores.
http://www.xt660.com/showthread.php?t=630
http://www.xt660.com/forumdisplay.php?f=52
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Hi Kev
I live in South Africa and we are a little limited to suppliers. I deal with a supplier that only get parts from Wiseco pistons.
Can you maybe give me a part number of the piston kit and gasket that you would recommend I get. If you know of a USA company that will ship to South Africa I would then buy direct if possible.
I had a look at the other pages/threads you posted and this looks wow?
Raptor 660 Cast Cylinder Kit 727cc 
.
http://www.whiteknuckleracing.com/index1.html
Will this work? Otherwise I will just go for the 102 overbore.
http://www.wiseco.com/ProductSearch.aspx
http://www.wiseco.com/ProductDetail....09&AppID=28659
I appreciate your time and input. Thank you.