Actually the f2 beats the 69, even the 77k beats the 69 in the quarter. Hard to see that with more weight if it had less power.
"The K-model is all this plus another 3 percent. It has an edge because it’s built and sold as a touring bike, so factors such as ground clearance and weight aren’t as significant as they are to a bike with “Super Sport” in its name. Ideally the K model would also have ComStar wheels, dual horns, a rear disc and the F’s power, but even without them, it’s a fine touring machine tainted only by less than satisfactory suspension compliance. Its 1/4-mile time of 13.33 doesn’t seem impressive compared to the F’s hot-blooded 12.7, until you realize it’s still three tenths quicker than the original CB750, three tenths quicker than the current Yamaha 750, and quicker than the BMW 750. In short it’s no slouch, and there’s a simple explanation why: the K engine is last year’s Super Sport engine with the new accelerator-pump carburetion system."
http://www.sohc4.net/index.php/hondacb750f2cb750k7-cyclefeature-1977/ Here is the cycle mag article.
The F3/k8 are virtually identical to the 77 year.
I am glad you like your carbs. More power to you but the results just don't add up.
HP readings also changed in how they were measured. In 69 it was measured at the crank.
Later it was measured at the wheel. The true wimpiest year was 74. Honda really butched the hp that year. Incidentally, that was the year of 18 tooth front sprockets.
You should be happy about your k8, in stock trim it would run with the 69 all day long. Imagine what it can really do know after your work on it.
But still, have fun with your carbs and good luck if you are putting together a sandcast, parts can be hard to find and expensive but the end result is worth it.
The ride IS the adventure. The destination is just to get gas!
Jun 07, 2012; 5:23am
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Guess I'm Old,and don't think 