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Rotary Evolution · 04-13-2013, 07:04 PM

that calculator is bogus, the figures are too high for rotary engine applications. perhaps it was carried over from piston engine calculators.

stock 550's good for 262whp at 85% duty? i don't think so.. it also claims FD 550/850's would do 342whp at 85% duty? right.

and i'm not sure why i have to keep repeating this, a turbo S5 engine does not guarantee a thick cast rear iron. they are actually quite rare even on j-spec blocks. if you wind up being unlucky and get the thin cast i would suggest studding the engine or keeping the power levels reasonable(sub 300whp) until it needs to be rebuilt and then reinforce it.

04-13-2013, 07:04 PM	#32
Rotary Evolution rotaryevolution.net Join Date: Feb 2011 Location: Las Vegas, NV Posts: 248 Rep Power: 15	that calculator is bogus, the figures are too high for rotary engine applications. perhaps it was carried over from piston engine calculators. stock 550's good for 262whp at 85% duty? i don't think so.. it also claims FD 550/850's would do 342whp at 85% duty? right. and i'm not sure why i have to keep repeating this, a turbo S5 engine does not guarantee a thick cast rear iron. they are actually quite rare even on j-spec blocks. if you wind up being unlucky and get the thin cast i would suggest studding the engine or keeping the power levels reasonable(sub 300whp) until it needs to be rebuilt and then reinforce it. __________________ http://rotaryevolution.net Last edited by Rotary Evolution; 04-13-2013 at 07:10 PM.