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Where To Get Neo Shims

Jayden.K

By Jayden.K,
in Engines & Forced Induction

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Jayden.K

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im going to purchase some tomei 260 cams and i have looked everywhere for shims just in case i need to change them, i have had no luck. i assume a set will come with various sizes depending whats needed or if theres a shop you can order them from in any size that would be good. and also im sure its been said a million times but still get 4 different answers, which clearances factory or tomei spec??

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https://www.sau.com.au/forums/topic/418344-where-to-get-neo-shims/
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GTSBoy Grand Master

GTSBoy

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i thought to change the clearance the buckets them selves were different thickness so you put in a different bucket? so there is shims that go in the bucket??

Neo has shims. Shim over bucket. Easier to change than shim under bucket, but also easier to spit them out at high revs if you get valve float, which kinda sucks. Shimless buckets are the bees knees for less weight and part count with zero risk of spitting a shim....but then you have to change the buckets if you need to alter clearances. Everything is a compromise.

Jayden.K Collaborator

Jayden.K

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Qr25 shim less buckets

oh ok so they are shimless, great!!. QR25 what does that stand for isnt that another motor and what thickness are these buckets? also you mention you ''converted'' 2 neo heads to shimless what is required?

Edited by Jayden.K
Jayden.K Collaborator

Jayden.K

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Also I've seen some people not having to change any clearances due to the base circle being the same, and factory clearance being tighter anyway? Would this seem right because then I wouldn't have to worrie

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