Fired up my crate 350 today. Runnign well but the engine heated up fast! Like, it entered closed loop mode in about a minute or two!!! I think that would be a new record for a cast iron block. I promptly shut it down almost rigjht after i started it. Also, the oil pressure shot up to 60 psi and stayed there. That was a bit discomferting. I watched the o2 voltage and blms from my laptop and the blms where around 140 or so and the o2 return was around .6 volts. This shows that i need to bump up the fp a bit b/c im a little toward the lean end but it doesnt seem to be running lean enough to cause it to heat up so fast like that. I know that new engines have tight clearences but the fact that the oil pressure was so high and the fact that it heated up so fast scares me. To me the high oil pressure and the high heat generated points toward an oiling problem. Any thaughts?

 

wow! look at the flood of responses. J/K Anyway ive heard some others have had the same experience on breakin. Is this normal?

 

oh... in case you havnt noticed yet. Im a total newbie at engine swaps.

 

Just fire it up and take it down the road, don't be a wimp. Just kiddin' I have no idea what's wrong, if anything.. Might just be the fact that it's a new engine. Using logic I would assume that's all it is, if I were you I'd keep starting it and running it for a bit then shutting it off.. Maybe give it some gas. But that's me, wait to hear what the other guys think about it.