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Yup, just juggle the gap/dwell. Time it right, make sure it doesn't break down at higher rpm and then just re-adjust by re-gapping in future. Make sure the points heels are lubricated.Pete
You've got some other problem then. Perhaps the wrong points?
If you adjust the top (left) points to .012, there is something fundamental about this process you do not understand. if you rotate the distributor in the hopes of affecting the timing of one side and not the other. Ditto. Put down the tools and get help.
Did you pull the distributor from the motor? Did you pull the point cam off the distributor during this process? It is possible you are timing to the wrong mark. Go back to first principles, check flywheel marks, etc.
but after all that my left cylinder points still are still about 12-13 flywheel teeth too advanced,,,wtf!.
Something's very wrong here, 12-13 teeth equates to 40 odd degrees, way out.
My thoughts exactly,,, I'm hoping it's due to the generic points,,,
I think Stevex is right, there's a bigger problem than slightly out of spec points or tall rubbing blocks. It sounds like you have a couple things wrong that are adding together, like you're a full turn off with the crankshaft, and you're using the wrong timing marks, so you're one turn minus 3/4 turn off, making it 1/4 turn off, for example. I have a dual point system in my Mille, and it's easy to use the adjustment of the mounting plate, together with small adjustments of the gaps, to get it where it needs to be, with the point gaps ending up being what the manual says they should be.
If you find a correct TDC, then with the rocker arm cover off, you can see if the two valves are symmetrically overlapping at that point, assuming you are checking when the exhaust valve is closing and the intake is opening. If symmetrical, then the cam is timed OK. By symmetrical, I mean the closing exhaust valve is still open about the same amount that the opening intake valve is open, right at TDC.
Jim, you and Stevex are both absolutely right,,,let me explain ::)I threw the old stock Marelli points back in, gapped the right side points a little open .019, spun the distributer so the right side opened right at the static timing line on the flywheel, then I gapped the left points a little tight at .013, retarded the left point mounting plate as much as possible, and turned the flywheel over,,, still way too advanced, left points opened at the TDC marking for the right cylinder, exactly 22 teeth on the flywheel before the left cylinder static timing line on the flywheel.I knew the point cam couldn't be that bad,,, I hadn't moved it, or the distributer shaft, obviously something was throwing the timing way off, and apparently the full range of adjustment for the right cylinder could compensate,,, but the limited range of motion in the left point mounting plate wasn't sufficient to deal with whatever major issue it was?,,, then it hit me like a ton of bricks.Last year, before I got sidetracked redoing the electrical system, I had upgraded to a new timing chain adjuster, and replaced the timing chain at the same time. I was very concious of the fact that I didn't want to disturb the sprockets inside the timing chest and screw up their relationship to each other and the timing overall,,, so I left the sprockets in place noting their alignment, and cut the old chain off and put on a new split chain with master links. But I remember very distinctly thinking to myself as I did it,,,being very particular to try to keep the marks on the sprockets aligned,,, but that when threading the new tight rigid chain, in place of the stretched old flexible one,,, I thought to myself,, it would be far too easy to drop or gain a tooth on one of the sprockets with the different fit of the new chain,,, I'm almost positive that's what's happened. :wife:If my suspicions are correct,,, and if my logic is right,,, then I'm thinking,,,that if I knew the total number of teeth on the flywheel,,, divided by the 22 teeth I'm too advanced,,, that should equal the number of teeth on the crank or cam shaft sprocket, and indicate which one I screwed up on,, am I on the right track?,,, and would I be looking to gain or lose a tooth when I remount the chain to retard back at the flywheel?Is there a simpler more logical way of determining which one is causing the problem or how to rectify it? and get things realigned?I'm not looking forward to ripping into the timing chest again,,, but I'd love to have a game plan for when I do,,, and before someone makes a comment about me being in way over my head,,, I'm the first one to admit that I am :bow,,, but it's a basic reality that I don't have any mechanics anywhere near me,, certainly not for an old Guzzi,,, I'm about as far back in the bush as you can get,, with plans to move back a little closer to the city,, but first I have to get this bike in my kitchen back together and running :beat_horse. With the help of KiwiRoy, LeRoy and many others,, I've solved a lot of issues and was really close to being up and running, until this last set back,,, and it's a major one,,,aaarrrgghhhh,,lol. But it's all good, and she still puts a smile on my face when I look at her,, would be nice to go for a ride again soon though :bike TksKelly