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Post Info TOPIC: piston blow by


Guru

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piston blow by
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Hi my bike started to develope a top end rattle so i took the piston out and it had blow by marks just above both sides of the wrist pin holes one side slightly worse than the other do you think i could just get away with new rings for the time being or is it rebore time thanks

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Admin

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Might get away with just a re-hone. Pics

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Guru

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There any scores or marks?

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DTR Trusted Engine Builder

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have to measure the bore and piston see if its worn out, no point putting new ringsd in for it to slap its sen to death in the near future biggrin



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Guru

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Its only for my husky wre 125 its standard apart from the dep silencer its only a little bit faster than my dtr so not to tuned but i could put on a wr cylinder carb and exhaust for a lot more power i think the wr125 puts out about 28bhp observe http://www.youtube.com/watch?v=VRzohP_VUfk

-- Edited by gooner78 on Friday 1st of June 2012 04:42:58 PM

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Guru

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sorted now just put a new vertex piston and ring in it and works fine one thing i am unsure of is the running in time for a piston in a nickosil cylinder any help would be great thanks.

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DTR Trusted Engine Builder

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3 x15 mins heat and cool cycles just be gentle to start of with, with all mx engines a proper warm up is essential

dont for get mx engines are higly tuned motors just made to do 15-20 mins motos then cool

these bikes are no giood for prolonged riding



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