honda305.com Forum

This sounds like a classic case of the timing being off between the ignition spark and valve timing. If I recall correctly, the points cam is driven by a shaft ending in a tab that can fit into a slot in the camshaft in two orientations, one of which causes sparks to come at the top of the exhaust s...

To answer your question, you need to make a table for your CA of the standard and crossed ratios like the one Tim Alman included in his post. Then look at the ratio gaps when shifting. As you have heard from others, for me it was a BIG improvement for my CB77. I liked the fact both second and third ...

The timing was fine, and carb jets were not blocked. It turns out there was a n air leak between carb snd head. Boy, those o rings are hard to find.

Larry

Took a nice ride up the Angeles Crest yesterday. When I checked the plugs back home, I noticed the right plug was dead white and no electrode above the ceramic. Surprisingly, ran ok but missed a bit. So, a plus for points ign! Se photo of electrode. My advance has been fixed, so next to check are pl...

Ok, after about 100 miles it’s time to recheck the valve clearance. While I’m in there I’ll check whether the problem with excess maximum advance has been solved. Done. Thought I heard some excess clatter. One intake valve was a bit loose. Now they are all 0.004”. I don’t know if it’s just me, but I...

My guess is that your SuperHot (per Brendan) will at least overheat and seize. Also, the spark plug electrodes will likely erode away before the pistons melt. Don’t ask how I know all this.

Check your timing is correct static and at full advance.

Larry

I decided to post this since I have now discovered this same problem for both a 1963 CB77 and a 1971 SL350 K1. The symptom is when first letting out the clutch at a start and twisting the throttle the engine misses. I also noticed this during steady low-speed riding. This does not keep you from ridi...