Quote:
Originally Posted by cossie1600
Earlier VQ also weren't designed to rev to 7500RPM. Once again, how many 370's engine died from rod bearings failure?
Why would you tune for 100 octane for the track given the fuel starvation issue of the 370. You better hope you have a gas pump at the track.
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the DE VQs didnt rev to 7500 stock, HR's did though, and HRs have the same rod bearing specs/size at VQ37s. the DE VQ's have a similar contruction but i believe slightly different shape. But if you dont believe me and feel 250+ oil temps is ok for your engine on track, then go right ahead. i honestly dont know, i havent gone around and counted blown from oiling issue 370z's, im just stating that it is a fact, VQ's have rod bearings on the soft side of metal compound making them eager to fail and spin at oil temps past 250.
also, he's not saying tune for 100, he's saying mix some 100 with your 91 to bring your effetive octane rating up higher then whatever octane you are tuned for, since track conditions always run harsher and hotter then any dyno can replicate. its cheap insurance against possible detonation. and your power will stay more consistant through out the day