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valve spring length

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ogre
100Club
100Club
Posts: 273
Joined: 12th Jun 2011
Location: rochdale

valve spring length

#1 PostAuthor: ogre » Tue Aug 28, 2018 5:10 pm

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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Big Fluff
Hardcore
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Posts: 2541
Joined: 1st Mar 2007
Location: Marbury, Shropshire

Re: valve spring length

#2 PostAuthor: Big Fluff » Wed Aug 29, 2018 12:26 pm

Any chance they might be APE heavy duty :roll:
Kawasaki GPz750T, Kawasaki ZRX1100R, Kawasaki GPZ1000RX, H**** VF1000RG Rothmans, H**** VF500F2F, H**** CB1100RD, Suzuki GSX1100EFE, H**** XL125K2

ogre
100Club
100Club
Posts: 273
Joined: 12th Jun 2011
Location: rochdale

Re: valve spring length

#3 PostAuthor: ogre » Wed Aug 29, 2018 2:18 pm

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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