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Post by nickincrete on Nov 25, 2012 14:38:13 GMT 1
trying to sync my powervalves together and they appear to be degrees apart from each other so when one is fully open the other is 3 or4 mm closed.
i bought the ypvs barrels and valves off ebay 31k barrels (both)
what can i do
help im well f...ked off and confused
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Post by Dieseldog on Nov 25, 2012 14:55:28 GMT 1
Hi,
have you checked the centre joint. The actual clamp on mine was well worn, also the 'flat' on the end of the power valve had worn meaning the right hand valve was operating out of sync with the left.
I rebuilt the flat on the end of the valve with plastic metal and filed down to correct size. Did the same with the centre clamp. Took some careful filing but managed a nice tight joint with both valves in sync.
As yet it appears to work ok with the engine running but not done any mileage yet as the bike is still in the rebuild stage.
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Post by nickincrete on Nov 25, 2012 15:40:22 GMT 1
the pins one one side were wobbily so i found a drill bit and cut it down to make pins to fit tighter
i had to file the back of the 1 valve where it hits the outlet port in order it woulnt bind
the flats are not too bad but they are about 40 degrees out of sync
i may try instant metal or fab a clamp that is 40 different each end
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Post by spencerd on Nov 29, 2012 0:04:23 GMT 1
I cut a piece of sheet Aluminium & used Araldite to bond it to one face of the PV joiner & all seams ok!
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Post by midlifecrisisrd on Nov 29, 2012 9:06:18 GMT 1
I would be checking the exhaust port height as they may not be matched.
Wouldn't be the first time a pair of "original barrels" were not matched and one has been ported.
If the valves are obviously sitting at different angles then as has been said, the centre joint is mis aligned/worn
Steve
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