Honda-SOHC
SOHC.co.uk Forums => CB500/550 => Topic started by: a100man on July 01, 2014, 11:01:12 PM
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Hi all
Fisrt of all apologies for crashing your forum.. I'm currently working on a Yam XJ550 and seeking to put a xj600 engine in it. The engine I have though would benefit from a rebore and that's where I hope you can help..
The bore of the XJ600 is 58.5mm same as the CB550 I understand. Problem with the XJ though is a complete lack of o/s pistons. I'm looking for a 59mm or thereabouts - the XJ uses a 15mm pin and from top of the gudgeon pin hole to the deck is 17mm and to the crown is 25mm close as dammit. Do Honda suppliers have anything close ? Even a new set of standard rings for the Yam is going to be about 150 quid.
Anyhow hope you guys might (through gritted teeth) have something to offer a beleagued Jap owner,
Cheers
James
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I wonder if yam xs250 pistons might fit? Principally as I have 7 in the shed. I'll take a look as I have severeral sets of pistons out of things lying around, might find something.
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Only other thing I can suggest is try Wiseco in the US as they do lots of big bore kits for bikes
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I wonder if yam xs250 pistons might fit? Principally as I have 7 in the shed. I'll take a look as I have severeral sets of pistons out of things lying around, might find something.
A quick google suggests these are 55 or 56 mm bore - thanks for the suggestion though..
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Only other thing I can suggest is try Wiseco in the US as they do lots of big bore kits for bikes
Thanks - I looked on there site and it's not that easy to decipher - had hoped you guys had a regular source for o/s 550 pistons for rebores.
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I do, my lockup! but finding, or rather the time to go look and measure is not easy mate
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Try IMD pistons they have a web site or give him a ring very helpfull.
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I do, my lockup! but finding, or rather the time to go look and measure is not easy mate
Understood ! As it goes I have found some NOS rings in the USA which I bought (relatively) cheaply - however if they don't do the trick and I get some low compression figures I'll be back on the case. Thanks to all for your support.
Best
James