[Racer x]

Nothing more than 110. More like 100. Above 110 and the engine will not even start. I have gone with 13 to 1 and found 110 was good. From a detonation point. But the power was not as good as the lower. That was all using Rocket brand fuel. Since switching to VP I have not done much testing and not done anything but nitrous and lots of ignition advance.

Using the Brt ignition I can pull timing below 7500. That is the area I had problems with. 44 deg or even 42 deg caused detonation during the lower gear acceleration. Still pull a little timin at 10000+ but don't know if it is detonating or not. I can't hear anything but wind and exhaust.