Stroker engine "diesels" after I shut it down

340sFastback said
What kind of problem will it cause?? I run mine at 32 degrees locked at the advice of Brian at Indio Motor Machines and my car starts, runs, and shuts down fine. No problems at all.

I also run my secondaries cracked open allowing me to turn the idle speed down so the primary transfer slots are not over exposed. This was also at the advice of Brian. Car runs great.

Like others have said he should try more initial timing so the idle screw on the carb can be turned down.

As stated I too run a locked distributor. And my idle is over 1500. But having a very large cam with significant over lap. gets rid of alot of cranking pressure at slow speeds which eliminates making heat after coming down to idle. The reason for higher compresion ratios needed for large cams in naturally asperated motors. Timing will not effect motors that don't make alot of pressure at an idle. To diesel you need compression and heat. Advanced timing only starts the reversing in a motor with alot of cranking pressure. Hot spots and a lean condition keep it going. The leaner the mixture the longer it deisels. I have seen some just keep on going and guys just walk away.

At 35 degrees locked a motor will be hard to start without a retard feature or a kill switch to throw on after its already spinning. Or you can just pump the throttle and flood the cylinders to get it to start spinning. My motor is 12.5-1 with a 700 solid roller. I have a 20 degree retard feature and still use my kill switch to start it @ 35 degrees. If not there are times it wants to jam the starter. But it still shuts down warm, Idling @1600 locked at 35 degrees in nuetral it does not diesel. Octane will also help eliminate dieseling.