KZScott
Needs a life
high on speed
Posts: 7235
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posted May 15, 2009 05:39 PM
valve job, usual lash change?
generally speaking, how much would valve lash decrease from a valve job? using my thinnest shims (2.35s) i cant even get the 3 thou feeler gauge in on the inlet side. wondering what size i should pick up to check with. 1.75s??
btw, the ex side looks like theres a max of just under 6 thou variance between required shim sizes. i may be slightly off, ill know more after i get some shims and double check
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
  
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osti33
Needs a job
Posts: 2973
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posted May 15, 2009 06:05 PM
 Edited By: osti33 on 16 May 2009 02:06
I can't answer for all valve jobs but after my last valve job. I had to go between .006-.008" thinner on the shims. However my head had some slight damage that needed to be repaired also. All the valves came out about the same though. They were all sunk into the head about .006-008" more than before.
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted May 15, 2009 08:11 PM
KZ,
Just "a touch up" won't hurt you very much. But, new seats or some cutting for a repair can give you grief.
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It's not that I think you're dumb, it's just that so much of what you know isn't true....
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entropy
Moderator
Posts: 8671
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posted May 16, 2009 03:55 AM
KZ,
i'd put in a range of sizes get it close, say 215 - 195 - 185 - 175 or whatever you have
then put in all the same size to get it closer,
then put in the right sizes to get it right.
takes a good stock o' shims to use this procedure...
I wish you lived closer, as i now (finally) have a "good stock" of shims.
Andy borrows 'em from me 
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entropy
Moderator
Posts: 8671
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posted May 16, 2009 04:02 AM
BTW
I have repeatedly seen variances in brand new aftermarket valve lengths (face to collet groove); max is about .006".
So even if the guy you go to for head jobs does a perfect job in cutting all seats to the same depth you will see variations in shim size.
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KZScott
Needs a life
high on speed
Posts: 7235
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posted May 16, 2009 05:27 AM
thanks a lot guys! I just had a "touch up" done on the IN side. new seats and valves on EX
Karl, if i lived closer you would have trouble keeping me out of your garage
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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entropy
Moderator
Posts: 8671
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posted May 16, 2009 05:39 AM
Edited By: entropy on 17 May 2009 01:07
hey scott, you are welcome in my garage anytime; maybe you could whip those lazy lil bi-sexual GB slut 's into shape. They don't listen to me.
I'm outa town this weekend, but back to the garage next weekend, electrical stuff.
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KZScott
Needs a life
high on speed
Posts: 7235
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posted May 16, 2009 08:52 AM
lol, women never listen to me either
made a wasted trip to a suzuki dealership today. nobody had shims in stock. i called the zuk dealer and he said he had a few 2.00 shims i could trade for a couple of my 2.55s. i get there and the smallest he had was 2.50. by this time everybody is closed. fml. going to order a few from honda dealership tues(mon is a holiday) get them by friday if im lucky, check lash friday night, order correct sizes sat morning, hopefully get them thurs, first points meet friday....
ill get the bottom end together today and check squish....
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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KZScott
Needs a life
high on speed
Posts: 7235
|
posted May 17, 2009 05:07 PM
woohoo a local guy that does work on 4 wheelers on the side had a hot cams kit with 9.48mm shims  I borrowed a couple thin ones and measured clearances. put it in Tims uber cool X Dot Racing Excel chart/calculator and I know what shims to order tuesday morning
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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