In the shim

  • lemo32
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31 May 2012 20:40 #526182 by lemo32
In the shim was created by lemo32
Well I got my motor back together, I have zero valve clearance, I have around 270 size shims so could somebody give me a starting point what size to start with, did a compression test had very little, so did leakdown and all valves are leaking in closed position.
1979 kz 1000 06 katana 750

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31 May 2012 20:45 #526184 by 4TheKZ1000
Replied by 4TheKZ1000 on topic In the shim
did you replace the valves

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31 May 2012 21:01 #526185 by lemo32
Replied by lemo32 on topic In the shim
no just lapped em a bit
1979 kz 1000 06 katana 750

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31 May 2012 21:09 #526187 by 4TheKZ1000
Replied by 4TheKZ1000 on topic In the shim
and you didnt have this prob before? did the valves ever leave the head, if so,,,,did they go into the orignal valve guide they came out of.

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31 May 2012 21:21 #526188 by lemo32
Replied by lemo32 on topic In the shim
yes they were replaced in the same guide.
1979 kz 1000 06 katana 750

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31 May 2012 21:22 #526189 by lemo32
Replied by lemo32 on topic In the shim
got 270 shims and around 280 what size? should I start with, anybodys guess would be cool :pinch:
1979 kz 1000 06 katana 750

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31 May 2012 21:38 #526191 by Roadflyer
Replied by Roadflyer on topic In the shim
I would try some 255's
1979 kz1000 shaftie rebuild project
1045 wiseco 10.25-1 pistons
Kenny Harmon 380 lift cams

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31 May 2012 21:51 #526193 by lemo32
Replied by lemo32 on topic In the shim
thats about what I was thinking, 240, around there thanks
1979 kz 1000 06 katana 750

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31 May 2012 22:07 - 31 May 2012 22:13 #526198 by bountyhunter
Replied by bountyhunter on topic In the shim
No eBay APP ID and/or Cert ID defined in Kunena configurationYou can get a shim kit, depends on whether your time is more valuable.



Z1 also sells 20 piece shim sets.

www.z1enterprises.com/Valve-Shim-Kit--29mm-256.aspx

The 34 piece kit on top is a better deal.
1979 KZ-750 Twin
Last edit: 31 May 2012 22:13 by bountyhunter.

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01 Jun 2012 08:04 #526264 by Powerstroke_fan
Replied by Powerstroke_fan on topic In the shim
I think the general rule is if you can spin the shim with your finger drop one size if not start with dropping to sizes.
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD

2014- ZX14R all stock for now

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01 Jun 2012 08:53 #526265 by Old Man Rock
Replied by Old Man Rock on topic In the shim
"leakdown and all valves are leaking"...
With this in mind, with the others 250/255 to start with...

And don't even bother with spining the crank, just remove the camshafts and replacing ALL the shims.
Don't want to bend a valve....
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter

Phoenix, Az

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01 Jun 2012 21:22 #526339 by APE Jay
Replied by APE Jay on topic In the shim
Put some 200s in it and see how loose that makes it, then do the math.
www.KZzone.com

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