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Pulled head and found 1 oily combustion chamber
- RandomKZ650
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For the head you should take it apart, media blast, match the intake runners to the carbs holders. I would then instal ape valve springs and Viton valves seals.
Depending on the mileage you should consider new valve guides.
I would remove the jugs without dropping the Pistons from their bore and replace the base gasket along with the oil passage orings
77 kz650 C1
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- car5car
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Scratch that! Spark plug is NOT oily.
Oil rings are probably stuck. People never flush engines.
96 Yamaha Royal Star
82 Yamaha Virago 920
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- Dirtyhands
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Attachment IMG_0281.JPG not found
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1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters
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- KZB2 650
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1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.
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- SWest
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- 10 22 2014
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Steve
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- pete greek1
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Pete
1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!
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- Dirtyhands
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1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters
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- RandomKZ650
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77 kz650 C1
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- missionkz
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The guides or seals?swest wrote: Clean up the head and use some fine lapping compound to see how the valve and seats are. If there are blank spots or the seats are too wide, you need the have them ground. That being the case, the guides should be replaced as well.
Steve
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- SWest
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- 10 22 2014
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Steve
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- missionkz
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Yes, I misunderstood. So with new valve guides, a regrind is pretty much a given.swest wrote: A three point seat grind should be done with new guides and seals.
Steve
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- SWest
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- 10 22 2014
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Who knew I'd be riding it at 62 like a 20 year old. :woohoo:
Steve
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