The engine is totally rebuilt, and I wanted to check the ignition timing before I install it in the frame. It's running on a set of 1000 carbs, so there is no vacuum advance. I lucked out, and the timing is right on the mark. Thanks, Dan, for the timing hole adapter!
[video]https://www.youtube.com/watch?v=zGrtmG7bUKs&feature=youtu.be[/video]
The Honda manual states that the timing is not adjustable, however this is not true. The vacuum advance unit is attached to the moving pulser coil plate via a threaded rod. By rotating the vacuum unit, the rod is shortened or lengthened, changing the position of the plate.
There is a single, smooth-headed bolt holding the vacuum unit in place. I was able to get it loose and re-tightened using the circular opening in a pair of needle-nose pliers.
Once the engine is in the frame, this is pretty much impossible to do without removing the swingarm and/or gas tank. Also, this will all be a distant memory when I can finally get the C5 ignition system! Fun and games!!!
[video]https://www.youtube.com/watch?v=zGrtmG7bUKs&feature=youtu.be[/video]
The Honda manual states that the timing is not adjustable, however this is not true. The vacuum advance unit is attached to the moving pulser coil plate via a threaded rod. By rotating the vacuum unit, the rod is shortened or lengthened, changing the position of the plate.
There is a single, smooth-headed bolt holding the vacuum unit in place. I was able to get it loose and re-tightened using the circular opening in a pair of needle-nose pliers.
Once the engine is in the frame, this is pretty much impossible to do without removing the swingarm and/or gas tank. Also, this will all be a distant memory when I can finally get the C5 ignition system! Fun and games!!!