Valve buckets and shims

  • Customkz1366
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22 Jan 2018 05:53 - 22 Jan 2018 05:53 #777563 by Customkz1366
Valve buckets and shims was created by Customkz1366
i have a 1993 kz1000p and i am trying to put a .440 drag cam in. I have heard that you need to use the shim under. Can they be from a 1984 gpz750
Last edit: 22 Jan 2018 05:53 by Customkz1366.

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  • SWest
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22 Jan 2018 07:31 #777570 by SWest
Replied by SWest on topic Valve buckets and shims
Not just the buckets.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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22 Jan 2018 07:48 #777572 by zed1015
Replied by zed1015 on topic Valve buckets and shims
Answer is YES!
You use the Buckets and the retainers from any Z650 - Z/GPZ 750, or GPZ1100 that is under bucket.
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
kzrider.com/forum/23-for-sale/611992-air-corrector-jets-





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22 Jan 2018 09:52 - 22 Jan 2018 09:54 #777577 by Dr. Gamma
Replied by Dr. Gamma on topic Valve buckets and shims
.440 lift cam is pretty big for normal street use. You will need to relieve the head on the thrust side of cam lobes too. Plus I don't know if the valve reliefs in stock pistons are deep enough for that big of a cam. Better check piston to valve clearance real carefully!! Heavy duty valve springs are a must with that big of a cam. I ran shim under buckets in all my KZ motors. With that much lift, they are a must!!!

Personally I would try something around .385 to .410 lift for a nice street cam.

Here is a early model head relieved for .450 lift cams.
1972 H2 750 Cafe Racer built in 1974.
1976 KH400 Production Road Racer.
1979 Kz1000 MK. II Old AMA/WERA Superbike.
1986 RG500G 2 stroke terror.
1986 GSXR750RG The one with the clutch that rattles!

Up in the hills near Prescott, Az.
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Last edit: 22 Jan 2018 09:54 by Dr. Gamma. Reason: added something.
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23 Jan 2018 08:43 #777631 by Customkz1366
Replied by Customkz1366 on topic Valve buckets and shims
thank you very much i appreciate all tour information

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  • Big KZ Jay
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26 Jan 2018 19:37 #777846 by Big KZ Jay
Replied by Big KZ Jay on topic Valve buckets and shims
A 440 lift cam will probably have a reduced base circle which requires special valve stem heights.

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06 Feb 2018 18:58 #778337 by Customkz1366
Replied by Customkz1366 on topic Valve buckets and shims
after measuring the cams they are actually .385

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