J-Madd Posted October 11, 2011 Report Posted October 11, 2011 Thanks for all of the replies and help. I narrowed down to a fuel delivery issue. My power jets weren't supplying enough fuel for Tue motor on the tall end. I still need to do some more tuning because its still a little lean on the tall end. Going to either add another pj or drill the singles out to 96 thousandth. A bunch of timing and not enough fuel doesn't work well. Thanks again. I have those same carbs on my 10 mil Cub also. I drilled the (dual feed) pjs out to 0.096" and it has no problem supplying fuel on the big end. I run the needles lean (its real zingy on the bottom) and it won't bog. The only times it did, I had electrical issues. 1 Quote
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