The CB900 Custom:
- Manufactured from 1980 to 1982, it was a variant of the CB750 line, similar to the late CB750Fs. Dual Overhead cam, 16-valve, 5-speed with high/low drive.
- Model Number: CB900C
- Dry weight: 576 pounds
- Horsepower: 82bhp at 9100 rpm
- Fuel Capacity: 4.4 US gal, including 1.2gal reserve
- Engine Oil: 4.7 US qt
- Transfer Case Oil: 0.6 US qt
- Final Drive Oil: 0.2 US qt
- Final Drive: 3.08:1
- Primary drive: 2.04:1
- Secondary Drive: 0.72:1 low, 0.62:1 high
- Quarter-mile: 12.72 @104mph
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- Seat Height: 30.8 in
- Wheelbase: 62 in
- Ground Clearance: 6.2 in
- Rake: 28.5 degrees
- Trail: 4.48 in
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- Compression Ratio: 8.8:1 (need to confirm this)
- Carburetors: Four Keihin 32mm CV carbs
- Octane recommendation: (r+m)/2 method, 86 octane or better
- Spark Plug gap: .9mm (.035in)
- Valve Clearance (cold):
- Intake: .127mm (.005in)
- Exhaust: .20mm (.008in)
Replacement Parts:
- Spark Plugs: NGK DPR8EA9 works fine. There's a compatible Autolite plug if you're really in a bind.
- Oil Filter: Fram #6009. Available at Wal-Mart and most Auto stores.
- Tires:
- Front: 110/90-19 62H
Dunlop Qualifier F11
- Rear: 130/90-16 67H
Dunlop Qualifier 67H
Manuals:
- Honda's original CB900C/F shop manual can be had at Helm Inc, Item #6146103. $32.00, in stock. Owner's manual is item #3146102 and costs $20.00.
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