KZ900 Valve Clearance
- BIGKEVIN
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KZ900 Valve Clearance
14 Apr 2015 17:55
Can someone tell me what the correct valve clearance is for a 1976 KZ900. I have heard that it is between .002 and .006. I checked the clearance on mine today and they are the following:
#1 intake - .003 fits
#1 exhaust - .066 fits
#2 intake - .003 fits
#2 exhaust - .003 fits
#3 intake - .0015 fits
#3 exhaust - .0025 fits
#4 intake - .0025 fits
#4 exhaust - .006 fits.
Looks like the #1 exhaust is too loose. The #3 intake, #3 exhaust, and the #4 intake are too tight. Should I also see about putting a thicker shim in the #4 exhaust ? Thanks for any assistance.
#1 intake - .003 fits
#1 exhaust - .066 fits
#2 intake - .003 fits
#2 exhaust - .003 fits
#3 intake - .0015 fits
#3 exhaust - .0025 fits
#4 intake - .0025 fits
#4 exhaust - .006 fits.
Looks like the #1 exhaust is too loose. The #3 intake, #3 exhaust, and the #4 intake are too tight. Should I also see about putting a thicker shim in the #4 exhaust ? Thanks for any assistance.
1976 KZ900
2006 ZX6R
2006 ZX6R
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- SWest
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Re: KZ900 Valve Clearance
14 Apr 2015 19:07
They should be between .002 -.004. If too tight you run the risk of burning a valve.
Steve
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
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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- missionkz
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Re: KZ900 Valve Clearance
14 Apr 2015 19:48RIGHT! For the most part, better a little loose then too tight!!swest wrote: They should be between .002 -.004. If too tight you run the risk of burning a valve.
Steve
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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Re: KZ900 Valve Clearance
14 Apr 2015 20:01
.066? What's the compression like on that cylinder?
Steve
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
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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- missionkz
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Re: KZ900 Valve Clearance
14 Apr 2015 20:31I'm guessing that was just a sausage finger typo... probably .006"swest wrote: .066? What's the compression like on that cylinder?
Steve
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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Re: KZ900 Valve Clearance
14 Apr 2015 20:49
Or a bent valve. Do they make feeler gauges that big?
Steve
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
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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- bluej58
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Re: KZ900 Valve Clearance
15 Apr 2015 04:15 - 15 Apr 2015 04:18swest wrote: Or a bent valve. Do they make feeler gauges that big?
Steve
Been there done that :pinch: you can tell right away by sticking a small flash light in the exhaust port and looking in the spark plug hole for light.
note; check it with the lobe facing away from the bucket
JD
78 KZ1000 A2A
Last edit: 15 Apr 2015 04:18 by bluej58.
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Re: KZ900 Valve Clearance
15 Apr 2015 06:28
You can double up on the feeler gauges. If in fact it is that big, bent valve. :ohmy:
Steve
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
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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