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| mr-jermy |
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mr-jermy
Nitrous Nuisance
Joined: 17 Oct 2012
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 Posted: 18:35 - 09 Jan 2013  Post subject: cylinder rebore |
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got an ns125r and the cylinder has several hairline cracks in it, i have a spare one but im not sure if it will need to be rebored or how much it would be likely to cost, anyone know how i can tell if it needs reboring and/or how much it would likely to be, based in norwich if that helps,
Thanks in advanced  |
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| Stevey |
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Stevey
Two Stroke Sniffer
Joined: 04 Dec 2011
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| Posted: 20:43 - 09 Jan 2013 Post subject: |
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Mick Abbey charge 15 quid per cylinder plus a fiver postage back to you. https://www.two-stroke-addicts.freeserve.co.uk/mick/home.htm
I got mine re-bored and honed for £35 at my local re-bore shop.
Probably best if you either took some good pictures and uploaded them or even take the barrel to a bike shop, most would advise and probably recommend a local place.
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| mr-jermy |
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mr-jermy
Nitrous Nuisance
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| Posted: 21:26 - 09 Jan 2013 Post subject: |
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thanks for getting back to me bud much appreciated, they look quite good found a couple of places near me so i might see what they are like and try them thanks, heres a couple of pics of the inside of the barrel not the best but the lighting isnt brilliant. |
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| Teflon-Mike |
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Teflon-Mike
tl;dr
Joined: 01 Jun 2010
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| Posted: 21:32 - 09 Jan 2013 Post subject: |
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| Stevey wrote: | I got mine re-bored and honed for £35 at my local re-bore shop. |
What did you get rebored? Sig says you have an RSX100.
As far as I know, that's a plain iron liner in an alloy barel, and CAN be rebored.
NSR as I recall has a Nikasil Chrome bore, which I dont know, but may be plated directly onto the auminium.
Either way, they cant be re-bored.
Two stroke specialist job, to get the barel reconditioned, either a new liner shrunk in, or the old plating removed and new plating put on.
Or its a new barrel.
I doubt very much that it will cost as little as £15...
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Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?' |
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| mr-jermy |
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mr-jermy
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| Posted: 21:36 - 09 Jan 2013 Post subject: |
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technically its not an nsr, its and ns125rl slightly different but by how much i dont know |
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| Vincent |
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Vincent
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| mr-jermy |
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mr-jermy
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| Vincent |
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Vincent
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| Posted: 21:55 - 09 Jan 2013 Post subject: |
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| mr-jermy wrote: | ok thanks i should have a spare piston ring lying around here, is there any difference in the rings? does it matter which one goes at the top? (sorry to sound like and idiot) thanks |
Yes, there is a difference between the top and bottom, or in some cases middle, ring, you always use the top ring to measure and it needs to be brand new. With cast iron bores, the cylinder might have been rebored already so you need to check the piston for marks to find out which size ring to use, ie: 1st, 2nd or 3rd oversize. Yours sounds like a Nikasil bore, (plated, like an incredibly hard chrome), so just one size. Nikasil bores last longer than cast iron bores but as Tef says, they can't be rebored, only replated which is more expensive.
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| mr-jermy |
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mr-jermy
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Old Thread Alert!
The last post was made 13 years, 36 days ago. Instead of replying here, would creating a new thread be more useful? |
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