Another MS conversion, Progress, at last. Options

[JimN73]

I've been talking to McMark for some time about the MS/ignition upgrade. I decided to to take the plunge a few weeks ago and asked Mark to put it on his schedule.

Jeff (JSConst) had bought a kit from Mark and decided not to use it, so I bought it from him. All of the pieces are together and Mark has time starting on Sunday.

Unfortunately, my time is limited so I may not participate much. I will add updates as I learn of them, or Mark may do that if he has the time.

[JimN73]

This has not turned out as well as either Mark or I had hoped. He had the car for more than a week had found problems that he could not solve.

At the end of the day, there are two continuing problems. First, it is hard to start, this can be minimized if I open the throttle a bit. Second, the engine bucks at a little less than 2,000 rpm. Mark feels that the cam that have has too much overlap for Microsquirt to handle.

I have Aircooled Technology cam #9530 cam (similar to WebCam grind #494), valve lift .465 and duration of 288/298.

The rest of the engine: 2056, lightened flywheel, 9.5:1 compression, Aircooled Technology heads.

Here is the tune that we're using and datalogs of the start and bucking. If anyone has seen this before and has found a solution, I think both Mark and I would be very interested.

Crap, uploading these file extensions is not permitted. Others have done it, how???

thanks.