Carb Tuning

dgc333 said

Actually your engine will spend most of it's crusing time on the idle & transition circuits and very little on the mains.

FWIW, you need to get the timing right before you mess with the carb. The XE268 cam will want somewhere around 14-16 degrees BTDC for intial timing.

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Yeah, right now, if my timing marks are accurate, I am running about 10 degrees with no pinging. Right now, my idle screws are turned out about 2 turns and the cams lopeyness is more noticible now than what it was with the screws out 4 to 4.5 turns. With the screws out that far, the lope wasnt as present and the motors idle was smoother, I guess maybe because of the added fuel to the mix. I dont mind the rough idle, as its the nature of the cam, but I just want the right amount of fuel given to it, not too much but not too little.

I also want the timing set properly. It does feels a little soft right now until you get to about 3,500 rpm, then it pulls like a banschee. Maybe it needs more timing? There is no starter kick back either right now.