SOHC.co.uk Forums > CB500/550

Rebores

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LesterPiglet:
I didn't realise the liners needed removed. Sounds like too much trouble/expense.
Thanks for your offer matthew.

Bryanj:
Now you got me thinking mate, i know it's new liners on a 500 but just possible it may not be on 550--BUT if not the liners will be very thin

z1100r:
I was quoted £20 a pot to bore to pistons I supplied - that was on my z1100r to fit a Wiseco forged 1170cc big bore kit. So £80 for rebore. They said they would do my spare set of Honda barrells aswel for £140 all in. Thats was last year at a place near me. That was for the whole job piston matched, but I insist on doing my own finish honing as I am a 2-stroke nut and appreciate the difference 0.0005" or so can make.

 550 liners are fine for 600cc kits. Its 500's that need all the new liners and crankcase opening up. I have bored a 500 to a 550 to avoid machining  cases to fit a 550 barrel.
 
 Back in the early eighties I used std Kawasaki GPZ305 pistons. Its now on +.5mm O/s of those. I had alot of messing about though with copper head gasket, combustion chamber re-shaping, and compression ratio calculations. Hight lift cams gave me another problem. It was alot of effort, but the difference was amazing, 750+ performance.

 The very same  engine now has a stock cam with bores honed and new 305 pistons and rings and I must say its still pretty amazing. Its one of those big smile fun bikes that people that ride it think 'Bloody hell, I wasn't expecting that'.

 

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