hi all can anyone shed any light on the correct valve spring length on my z1.in the manual the outer is 39.3 standard but mine are 42.4 and a spare set i have are 41.are these correct and if i refit them is there a case of losing a bit of performance cos the engines having to do slightly more work to open them.
cheers
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valve spring length
Moderators: chrisu, paul doran, Taffus, KeithZ1R
Re: valve spring length
Any chance they might be APE heavy duty
Kawasaki GPz750T, Kawasaki ZRX1100R, Kawasaki GPZ1000RX, H**** VF1000RG Rothmans, H**** VF500F2F, H**** CB1100RD, Suzuki GSX1100EFE, H**** XL125K2
Re: valve spring length
no idea really just seems strange i have a set that came with other bits a few years ago and the set i pulled from the head are near enough the same
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