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Lawson Jigsaw Project

Work in Progress

Moderators: KeithZ1R, chrisu, paul doran, Taffus

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Location: Aberdeen,Dyce

Re: Lawson Jigsaw Project

#76 PostAuthor: z1000puddin » Thu Jul 12, 2018 6:54 am

Can anyone identify the pistons ?
The numbers dont seem to be Wiseco
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Zed til Dead

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paul doran
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Re: Lawson Jigsaw Project

#77 PostAuthor: paul doran » Sun Jul 22, 2018 4:14 pm

shims are under bucket on unitrack heads so it is correct
unusual to see broken shims
I had a smashed shim on a Z1 engine recently and a badly fitting bucket caused it
it would not compress when cam lobe struck it so something had to give and the shim shattered
way too many Zeds

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Re: Lawson Jigsaw Project

#78 PostAuthor: Kwackman » Mon Jul 23, 2018 11:51 am

paul doran wrote:unusual to see broken shims

I read somewhere (maybe on this forum?) that some people ground old shims down to a smaller size rather than buying new ones, and this was likely to effect their "hardness" and cause them to break.
Could be the cause, or an old wive's tale?!
2006 ZRX1200R
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ex owner of Z1100R
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