You should be able to run 24° timing without issue. Time your engine using the static timing method gapping the points does not set timing.

Thanks. I'll give that a shot this weekend.

OK. I found the timing marks. Set it so it the points just open right on the S. Went back to the white dot I have been using for setting the timing and it was gapped at 0.02. Seems someone marked the spot where the points have the widest gap. Gapped it at 0.022 and checked the static timing. It looks right. Cranked it and it was a bit hard to start as expected because of the advance. So, timing is not the issue.

Thinking back, I tweaked the carburetor the day of the pull. Backed off the richness until the rpms went up. I was running the carburetor too lean. I have readjusted it by enriching it until it runs rough, backing off until the rpms start going up, then enriching it a quarter turn. Does that sound about right?

that sounds like your problem. I usually let them pop once or twice during a run . it would happen early in the run but as load comes on it clears up and has nice torque

So, you are saying it is OK to have the occasional miss from being over rich?

yes, early in the run its ok when the motor is free reving

Last pull of the season, for me anyway. I came in 3rd, 2nd, and 1st in my 3 pulls. This pull is usually a trophy pull, but with all the controversy over our insurance, it was overlooked. Maybe next year.

Tomorrow I will convert the tractor back to a dirt mover. The spare engine will be rebuilt over the winter for next pulling season. The plan is to swap engines and use one for pulling and one for moving dirt during the off season. It would be better to just have two tractors, but this is the next best thing.

Next season I should be getting about 18 hp. from the new engine. Should be pulling first place every time :ThumbsUp:. Thanks guys for all the help so far.

just remember the more HP without drive line mods the risk of breakage goes up

Last year I had a 3 puck clutch, stronger drive shaft, and the thick casting carrier and fine splined axles installed. Hopefully, that will hold me through next year. After that, I will buy a complete transaxle from Midwest Super Cubs.

Just a note on the Carlisle AT101s. They have been performing very well for me on loose and hard tracks. I mounted them on 10 inch rims, and run them with 10 lbs. pressure.

did you put a steel pinion bearing holder in? try dropping your tire psi when the track is loose, 7 should be good