Varying Valve Clearance?????

  • cgray34
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Varying Valve Clearance?????

27 Aug 2007 18:28
#166739
I have a varying valve clearances across the board.

INTAKE

EXHAUST
1. .003 .0025 INCHES
2. .0025 .002
3. .002 .0025
4. .0025 .004

QUESTIONS:

1. What does this mean?

2. Can I shim each one with a different size to make them all the same? Do I want them all to be the same?

3. Is it possible this is worn down lobes?

4. How will this effect performance?

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  • cgray34
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Re: Varying Valve Clearance?????

27 Aug 2007 18:30
#166741
Sorry for the lack of spacing.

I have a varying valve clearances across the board.

INTAKE

EXHAUST
1.--- .003
.0025 INCHES
2. ---.0025
.002
3. ---.002
.0025
4. ---.0025
.004

QUESTIONS:

1. What does this mean?

2. Can I shim each one with a different size to make them all the same? Do I want them all to be the same?

3. Is it possible this is worn down lobes?

4. How will this effect performance?

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  • RonKZ650
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Re: Varying Valve Clearance?????

27 Aug 2007 18:39
#166747
Those clearances are OK really, but on the tight side. I'd swap the 7 tight ones with a shim 1 size smaller than what you have now, then you'd be close to .004" on them all. I doubt seriously you'll tell any difference in performance whether you swap them or not.
321,000 miles on KZ's that I can remember. Not going to see any more.

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  • mark1122
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Re: Varying Valve Clearance?????

27 Aug 2007 19:08
#166758
your in good shape this is norrmal. the gap gets smaller as things ware so next year when u reshim u can go to the top end of the spec..004"
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

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