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Post by pigboy on Dec 6, 2022 14:45:45 GMT 1
Hi I’m trying to investigate a vibration I’m get in the top end of the cylinder head at certain rpm , is it possible the ypvs valve are not set up correctly? I’ve used a drill to align hole with ignition on and it pulls lovely through all gears and rpm . Certain rpm it sounds perfect but lower rpm it has a little annoying vibration , any ideas ?
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Post by abar121 on Dec 6, 2022 15:50:09 GMT 1
It's better to align the valves with the exhausts off.
It could also be the small ends or rings / pistons.
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Post by pigboy on Dec 6, 2022 16:48:52 GMT 1
I’ve got new small ends , pistons and rings so should be good
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Post by arrow on Dec 6, 2022 19:03:47 GMT 1
I has the same on an LC. Turned out to be a loose kick-start. An extra shim under the circlip cured it.
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Post by abar121 on Dec 6, 2022 20:18:36 GMT 1
Clutch?
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Post by marrcel on Dec 11, 2022 21:42:27 GMT 1
Change the coil and spark plug caps first
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