(2)450 DP's vs (2)750 DP's

Ok last update of the day, too hot in garage to enjoy going any further.
I went ahead and put the 57 jets in. I also put the .070 IAB’s back in. Idle just seemed a little “muddy” if that makes sense. Grabbed my notebook and went back out. Only one problem, I left my pen on the bench. Anyway seems to be better. Tried to take a video while driving but have yet to look at it for any possible data from it. Not real thrilled with the idle and steady low speed, idle to say 25-30mph but it’s not terrible. I may have a sync problem with the carbs. I’ll look into that in the morning. Bottom line, the jury is still out. It’s 100% drivable, reliable, strong in acceleration, just doesn’t seem right for some reason.


I think you might be surprised how little the carbs can be out of time and have it affect the tune up.

I thin before I spent more time chasing this relatively low speed drivability issue I would get the unisync and carb hat and get the carbs timed up.

Once you do that it may change the way it drives.

I wish I knew the science behind what happens when the carbs are out of time but I haven't a clue. At my age I'm probably not going to bother learning it.

I'm just know how important it is.