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Stock cam lift?
- spdygon
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We know they should be between.002 and .004.
He measured the cam lope and the it measure 362mm.
Is 362 the original cam lift?
My 79 kz1000 had z4 cams and it required.004 to .006 valve clearance.
So either he has after market cams or his cams are worn out.
Thoughts? His bike is a 78kz1000
1982 GS1000sz Katana ( #15...17K Miles)
1982 GS1000sz Katana ( # 297....7100k Miles)
1978 Kz1000 Z1R. 10K Miles1
1978 kz1000 z1r 27k miles
1977 KZ 1000 A ( Project ) 54K Miles
1976 Kz900A4 (Red)21K miles
1976 Kz900A4 ( Red)7500 miles
1974 Z1 900 project
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- OnkelB
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spdygon wrote: .
...He measured the cam lope and the it measure 362mm...
Umm, I think you mean 36.2 mm - 362 mm = 36.2 cm which is more than a foot long (1 foot = 304.8 mm/30.48 cm).
Is 362 the original cam lift?...
No, neither is 36.2. Measure the base circle, perpendicular to the lobe center line, then subtract that measure from the lobe heel-to-nose measure you already took (36.2 mm), the result is the lift.
77 KZ 650 B1, 82 GPz 1100 B2.
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- 650ed
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Where did you come up with that specification? The KZ1000 Kawasaki Service Manual I have access to shows 0.05mm - 0.15mm which equals 0.002" - 0.006" Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- racer54
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1980 LTD (changed over the years), 1979 LTD (being rebuilt), 1977 KZ turbo and various KZ's in various states of build. KLX110
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- spdygon
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002 to 004 of an inch
.005 to .010 mm
Sorry...measurements are 006 and 007 of an inch
1982 GS1000sz Katana ( #15...17K Miles)
1982 GS1000sz Katana ( # 297....7100k Miles)
1978 Kz1000 Z1R. 10K Miles1
1978 kz1000 z1r 27k miles
1977 KZ 1000 A ( Project ) 54K Miles
1976 Kz900A4 (Red)21K miles
1976 Kz900A4 ( Red)7500 miles
1974 Z1 900 project
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- 650ed
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1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- SWest
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Steve
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- spdygon
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he has stock cams....Intake is 36.22 Exhaust is 35.55
so safe to assume that his cams are worn out at the base?
Or what else would cause loose valve clearances?
Normally valves get tight.
1982 GS1000sz Katana ( #15...17K Miles)
1982 GS1000sz Katana ( # 297....7100k Miles)
1978 Kz1000 Z1R. 10K Miles1
1978 kz1000 z1r 27k miles
1977 KZ 1000 A ( Project ) 54K Miles
1976 Kz900A4 (Red)21K miles
1976 Kz900A4 ( Red)7500 miles
1974 Z1 900 project
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- SWest
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Steve
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- missionkz
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Intake> 36.36mm x 28.30mm = 8.06mm lift, or .317"
Exhaust> 35.85mm x 28.18mm = 7.65mm lift, or .301"
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- 650ed
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spdygon wrote: ok
he has stock cams....Intake is 36.22 Exhaust is 35.55
so safe to assume that his cams are worn out at the base?
Or what else would cause loose valve clearances?
Normally valves get tight.
No, the base should not be worn out. Nothing rubs on the base (that's why clearance is measured at the base), so it should not wear at all. Of course, if the owner has the valves so tight that there is zero clearance all bets are off, but that does not sound like it is the case here.
Valves do not always get tighter. I have had them vary a little both tighter and looser. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- Nessism
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