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[Jaxx_]

Yes. Great point. :)

[Jaxx_]

You really don't need crazy retarded timing. I was getting pops at like 20 deg of timing BTDC on my M10. As I said, the flame speed is so slow with a leanish and low density fuel mix (high vacuum) that...

[Jaxx_]

What's the max timing the distributor can do? Aren't they limited to a certain amount of retarded timing? I would try something in the 10s BTDC not ADC.

If still nothing try targeting 15.0:1...

[Jaxx_]

Make sure you have fuel on decel (no overrun fuel cut on), timing should probably be in the low teens at the bottom of the map. Near stoich or lean of stoich is best in my experience, as flame speed is...

[Jaxx_]

Perhaps there is some factor there. Are the in and out lines of the cooler oriented in a way that they won't drain back? Besides oil pressure issues when starting I could imagine this could have some...