Difference between revisions of "Honda CB750K"
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[[Image:1976_honda_Cb750k.jpg|left|thumb|1976 Honda CB750K]] | [[Image:1976_honda_Cb750k.jpg|left|thumb|1976 Honda CB750K]][[Image:1976-Honda-CB750K-Red-0.jpg|left|thumb|1976 Honda CB750K in Candy Antares Red]][[Image:1976-Honda-CB750K-Red-1.jpg|left|thumb|1976 Honda CB750K in Candy Antares Red]][[Image:1976-Honda-CB750K-Red-2.jpg|left|thumb|1976 Honda CB750K in Candy Antares Red]] | ||
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Revision as of 11:33, 7 October 2006
In June of 1968, Honda dropped the gauntlet that would forever change the world of motorcycling. The CB750 Four offered a combination of features never before seen on a single motorcycle. No longer would Honda be known as motorscooter company.
At the heart of the CB750 was an inline four-cylinder engine with a single overhead cam, four carburetors, four-into-four exhaust pipes. It produced 67 horsepower at 8000 rpm which was 15-percent more power than BSA's new 750 cc Rocket 3 even though they weighed about the same (just under 227 kg (500 pounds)). The Honda, obviously, was much faster.
It was not just the four-cylinder engine that caused such a stir; though most contemporary competitors had twin cylinders, fours had been offered by several manufacturers in the past. Rather, it was the fact that the four-cylinder power and smoothness was joined by a five-speed transmission, electric starter, a front disc brake, and a nearly bullet proof design—the first ever on a street bike—all at a reasonable price.
The single cam version was produced without much refinement until 1978 when it was replaced with a long awaited, more modern, double cam model.
In 1975 Honda introduced the "F" or "SuperSport" model which had a rear disc brake and a 4 into 1 header as well as some other cafe inspired additions. Later they brought out the "A" or "HondaMatic" model which was a clutchless 2-speed model with a wet sump lubrication system.
Honda also produced smaller fours in 350,400,550 and 650 displacements.
The first CB750s were produced with sand-cast cases that had a rough finish, later models had smoother castings. Those early sand-cast models have become the most valuable to collectors.
By 1970, Dick Mann had piloted a race-prepped CB750 into the winner's circle at Daytona and the world of aftermarket hop-up equipment came alive. The CB750 is also credited with casting the mold for what would later be called the "Universal Japanese Motorcycle," a breed of machines that would bring the Motorcycle manufacturers of England to their collective knees.
1969 to 1970
The CB750K0 Four was sold from 1969 to 1970 and was available in one of three colors: Candy Blue Green, Candy Gold, or Candy Ruby Red. The tank, side covers, and upper forks were of the basic color (green, gold, or red). The headlight shell was also the basic color. The bike had a 4-into-4 throttle cable system. The exhaust system was a 4-into-4. The engine was a 736cc SOHC 2-valve dry sump inline 4 cylinder linked to a 5-speed transmission and chain drive. The serial number began CB750-1000001.
1970 to 1971
The CB750K1 Four was sold from 1970-71 and was available in one of four colors: Candy Ruby Red, Candy Gold, Valley Green Metallic, or Candy Garnet Brown. The gas tank stripe was gold. The tank, side covers, and upper forks were of the basic color (red, gold, green, or brown). The side covers were smaller and there were no slots on the leading edge. There was a two-throttle cable system (pull open and pull closed). The headlight shell was also the basic color. The exhaust system was a 4-into-4. The engine was a 736cc SOHC 2-valve dry sump inline 4 cylinder linked to a 5-speed transmission and chain drive. The serial number began CB750-1044650.
1972
The CB750K2 Four was sold in 1972 and was available in one of three colors: Brier Brown Metallic, Flake sunrise Orange, or Candy Gold. The gas tank stripe was gold. The side covers were smaller than the K0 model and there were no slots on the leading edge. The upper forks were chrome. The headlight shell was black. The taillight and side reflectors were larger. There was a two-throttle cable system (pull open and pull closed). The exhaust system was a 4-into-4. The engine was a 736cc SOHC 2-valve dry sump inline 4 cylinder linked to a 5-speed transmission and chain drive. The serial number began CB750-2000001.
1973
The CB750K3 Four was sold in 1973 and was available in one of three colors: Flake Sunrise Orange, Candy Bucchus Olive, or Maxim Brown Metallic. The gas tank stripes were white, gold and black. The side covers were smaller than the K0 model and there were no slots on the leading edge. The upper forks were chrome. The headlight shell was black. The taillight and side reflectors were larger than the K1 model. There was a two-throttle cable system (pull open and pull closed). The exhaust system was a 4-into-4. The engine was a 736cc SOHC 2-valve dry sump inline 4 cylinder linked to a 5-speed transmission and chain drive. The serial number began CB750-2200001.
1974
The CB750K4 Four was sold in 1974 and was available in one of three colors: Flake Sunrise Orange, Freedom Green Metallic, or Boss Maroon Metallic. The gas tank stripes were white, gold and black. The side covers were smaller than the K0 model and there were no slots on the leading edge. The speedometer showed increments of 20 (i.e., 20, 40, 60, 80, etc.). The upper forks were chrome. The white tank pinstripe was wider than the K3 model. The headlight shell was black. The taillight and side reflectors were larger than the K1 model. There was a two-throttle cable system (pull open and pull closed). The exhaust system was a 4-into-4. The engine was a 736cc SOHC 2-valve dry sump inline 4 cylinder linked to a 5-speed transmission and chain drive. The serial number began CB750-2300001.
1975
The CB750K5 Four was sold in 1975 and was available in one of two colors: Planet Blue Metallic or Flake Apricot Red. The instrument faces were dark green. The speedometer numbers were increments of 10 (i.e., 10, 20, 30, 40, etc.). The side covers were smaller than the K0 model and there were no slots on the leading edge. The upper forks were chrome. The white tank pinstripe was wider than the K3 model. The headlight shell was black. The taillight and side reflectors were larger than the K1 model. There was a two-throttle cable system (pull open and pull closed). The exhaust system was a 4-into-4. The engine was a 736cc SOHC 2-valve dry sump inline 4 cylinder linked to a 5-speed transmission and chain drive. The serial number began CB750-2500001.
1976
The CB750K'76 Four was sold in 1976 and was available in one color: Candy Antares Red. The instrument faces were light green. The side covers were smaller than the K0 model and there were no slots on the leading edge. The upper forks were chrome. The white tank pinstripe was wider than the K3 model. The headlight shell was black. The taillight and side reflectors were larger than the K1 model. There was a two-throttle cable system (pull open and pull closed). The exhaust system was a 4-into-4. The engine was a 736cc SOHC 2-valve dry sump inline 4 cylinder linked to a 5-speed transmission and chain drive. The serial number began CB750-2540001.
1977
The CB750K'77 Four K was sold in 1977 and was available in one of two colors: Candy Alpha Red or Excel Black. The gas tank stripe was gold with a white and red pinstripe. The "750 FOUR K" side cover emblem was gold. There was a two-throttle cable system (pull open and pull closed). The exhaust system was a 4-into-4. The engine was a 736cc SOHC 2-valve dry sump inline 4 cylinder linked to a 5-speed transmission and chain drive. The serial number began CB750-2700009.
1978
The CB750K'78 Four K was sold in 1978 and was available in one of two colors: Candy Alpha Red or Excel Black. The gas tank stripe was gold with a gold and red pinstripe. The "750 FOUR" side cover emblem was a graphic design. There was a "K" side cover decal and stripe. The seat is contoured in a two-stage design. There was a two-throttle cable system (pull open and pull closed). The exhaust system was a 4-into-4. The engine was a 736cc SOHC 2-valve dry sump inline 4 cylinder linked to a 5-speed transmission and chain drive. The serial number began CB750-2800001.
1979
The CB750K'79 Four K was sold in 1979 and was available in one of three colors: Candy Muse Red, Candy Bayard Brown, or Black. The taillight lens was a wraparound unit with a painted cowling. The exhaust system was a 4-into-4. The speedometer had a 150 mph (240 kph) limit. The engine was a 749cc DOHC 4-valve inline four cylinder linked to a 5-speed transmission. The serial number began RC01-2000001.
Limited
The CB750K'79 Limited Edition was sold in 1979 and was available in one color scheme: Candy Muse Red with Red. The gas tank and side covers were 2-tone. The wheels were black comstar. There was a separate taillight assembly with the 1978 style lens. The "10th ANNIVERSARY CB750K" side cover emblem was gold and green. The engine was a 749cc DOHC 4-valve inline four cylinder linked to a 5-speed transmission. The serial number began RC01-3000006.
1980
The CB750K'80 Four K was sold in 1980 and was available in one of two colors: Candy Muse Red or Excel Black. There was a separate taillight assembly with a chrome bracket. The speedometer had a 85 mph (135 kph) limit. The engine was a 749cc DOHC 4-valve inline four cylinder linked to a 5-speed transmission. The serial number began RC01-2100005.
1981
The CB750K'81 Four K was sold in 1981 and was available in one of two colors: Candy Muse Red or Cosmo Black Metallic. The speedometer had a 85 mph (135 kph) limit. The 4-into-4 mufflers had a new megaphone design. The front forks were air-adjustable. The engine was a 749cc DOHC 4-valve inline four cylinder linked to a 5-speed transmission. The serial number began JH2RC010*BM200001.
1982
The CB750K'82 Four K was sold in 1982 and was available in one color: Candy Imperial Blue. The speedometer had a 85 mph (135 kph) limit. The front forks were air-adjustable. The front disc brakes were slotted with twin piston calipers. The 4-into-4 mufflers had a megaphone design. The engine was a 749cc DOHC 4-valve inline four cylinder linked to a 5-speed transmission. The serial number began JH2RC010*CM300003.
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