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Do i REALLY need to replace the piston rings?
K3 sv650s 16.5k miles on it
Here are the measurements All the rings thicknesses are spot on the upper limit, 1.19 1st ring & .99mm 2nd ring. so no issues there. In bore end gap (tested at the top middle & bottom or the bore) limit is .7mm (anything above this is a fail) 1st rings (front & rear) .3mm (well within) 2nd rings (front & rear .35mm (well within again) The issue i'm having is out the bore end gaps. 1st rings (front and rear) limit is 7.6mm - they measure 8-9mm 2nd rings (front and rear) limit is 8.8mm - they measure 10-11mm Everything else is absolutely fine! Advice appreciated as i am just about to start the big push to get the top end rebuilt. :p |
Re: Do i REALLY need to replace the piston rings?
I really would not worry about the out of bore end gaps, the in bore is the key one and they sound fine.
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Re: Do i REALLY need to replace the piston rings?
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Re: Do i REALLY need to replace the piston rings?
I think that if you have gone that far already why not just replace them, Its common practice at work to change them anyways regardless of wear its a tad money wasting but preventative maintaince is the word they use.
Also have you measured the bore to ensure no taper??? Cheers Gaz |
Re: Do i REALLY need to replace the piston rings?
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Re: Do i REALLY need to replace the piston rings?
If they were mine, from what you say, I'd put them back in. They've only done 16k, just broken in. (make sure they are the right way up!)
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