CB750F

CB750F

History

In 1975, Honda revamped the 750 model line, which had evolved to become a reliable, comfortable tourer, with the addition of the CB750F Super Sport. This model was engineered to take the 750 back to its superbike roots with improved performance, handling, and braking combined with a more radical style highlighted by the four-into-one exhaust.

This model, originally thought to replace the CB750K, remained aside the K model in Honda’s lineup through the 1978 model year with few changes.

Model Changes

YearModel Changes
1975/1976 F0/F1changes from CB750K: lower gearing; 4-1 exhaust; increased fork trail; stronger swingarm; disc rear breake; “Euro” cosmetics
1977/1978 F2/F3changes from F0/F1: Bigger valves and stronger bottom-end in 70bhp engine; accelerator pump; new front fork with twin brake disks; Comstar 5-spoke wheels; FVQ shocks

Production Data

ModelProduction
CB750 F015,000
CB750 F144,000
CB750 F225,000
CB750 F318,400

Serial Numbers

Model #YearProduction DatesFrame #Engine #
CB750 F0197501/75 – 02/751000002 to 10150542500004 to 25115085
CB750 F1197603/75 – 11/762000003 to 20223172525094 to 2563530
CB750 F2197711/76 – 05/772100011E2600004
CB750 F3197805/77 – 05/782200001E3100001

Model Guide

1975 CB750F0

The CB750F was introduced in 1975 and offered in two colors, Flake Sunrise Orange and Candy Sapphire Blue.  The bike featured a 4-into-1 exhaust with a plastic rear cowling around the seat painted the same color as the tank.  The side covers were black.  Spoke wheels were used with a front and rear single disk brakes.  The engine and fork legs were silver which was the standard color for all the 750’s.

1976 CB750F1

The 1976 CB750F1 was available in Sulfur Yellow or Candy Antares Red. The only change for this model year was the introduction of green gauge faces. The engine received a number of modifications after engine #2500004 including a new camshaft; new pistons producing a compression ratio of 9.2/1 and a new case without the primary chain oiler. The Final drive gear ratio was changed to 48/50.

1977 CB750F2

The CB750 F2 of 1977 was available painted Candy Presto Red or Black.  A red gas tank stripe with gold pinstripe accents was added.  The side covers, rear cowling, and gas tank were now all painted the same basic color.  Comstar wheels were added with dual front brake disks. The engine and fork legs were now painted black.

After engine numbers, CB750E-2600014 and CB750GE-1000014, the following modifications where made: New cylinder head with bigger valves (34/31mm i/o 32/28mm), larger combustion chamber, larger carb mount rubbers, stronger cam chain, new camshaft, stronger valve springs, new retainers, cotters, new pistons compression ratio 9/1. New rod bigend bolts and bearings, stronger clutch springs, additional fins on crankcase, larger fins on oil pan, “oil cooler” - finned plate between oil filter case and engine. Final drive 15/43 or 14/43.

1978 CB750F3

The final CB750 model kept the Candy Presto Red and Black color options of the previous year.  The only change from 1977 was a new graphic design for the “750 Four” side cover emblem.

Specifications

  
Engine typeFour-stroke transverse parallel single overhead cam four cylinder
Bore & stroke61mm x 63mm
Displacement736.4cc
Compression ratio9.2:1
Ignitionbattery/dual coils/ dual points
Charging system12 volt, AC generator, voltage regulator, selenium rectifier
Carburetion4, 28mm Keihin slid/needle
Lubricationdry sump, 3.7 qt (3.5L) tank capacity
Primary drive2 single-row chains; 1.985:1 ratio
Clutchwet, 7 plate
Starting systemelectric and primary kick
Transmission5-speed, left-foot shift
Drive ratios 
GearRatio
114.01
29.57
37.47
46.35
55.44
Transmission sprocket17-tooth
Rear wheel sprocket48-tooth
Drive chain5/8in. pitch; 3/8in. wide, #530 chain
Front fork5in. (127mm) travel
Rear shocks5-way adjustable, 3.8in. (96.5mm) travel
Front brakesingle-action hydraulic caliper; 11.7in. (298mm) disc
Rear brakedouble-action hydraulic caliper; 11.7in. (298mm) disc
Front tire3.25H19 rib
Rear tire4.00H18
Frametubular steel, double downtube
Steering head angle28 degrees from vertical
Front wheel trail4.5in. (115mm)
Wheelbase58.0-59.3in. (147.3-150.6cm)
Length87.3in. (221.7cm)
Weight503lb (228.2kg)
Weight distributionF/R %: 44.7/53.3
Ground clearance5.6in. (142.2mm) at exhaust collector
Seat height32.6in. (828mm) unladen
Handlebar width31.8in. (807.7mm)
Handlebar grip height43in. (109.2cm)
Footpeg heightLeft: 13in. (330.2mm); Right: 12.4in. (315mm)
Instrumentationspeedometer, tachometer, tripmeter
Gas tanksteel, 4.8 US Gallon (18.2L)
Gas consumption38.3mpg (16.3km/L)
1/4 mile acceleration13.10 sec, 101.5mph (163.3kph)
Stopping distance, 30mph34ft (10.4m)
Stopping distance, 60mph141 2/3 ft (43.2m)
Sound level (SAE XJ 331a)78.6db(A)
US Retail priceEast Coast: $2165; West Coast: $2152