The last one was caused when the O2 sensor failed and the ECU went full lean. It just hammered a couple rod bearings this time. Only cost me a crank kit and one new rod.

Having learned a lot on this car I am tossing around the idea of building the other car into a legal ITS car. At least then if I blow one up I can go get the other and still run the Sunday race.

Ty,
Rev limiter is 6250 and I normally shift between 5500-5800. And I quit useing junk yard pulls without going through them first. Oh and the injector rebuild stopped the oil level from going up two quarts in a 30 minute race. Thin oil is not conducive to long engine life. Whoda thunk that?