Typical BSFC for a rotary

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Sep 10, 2014 | 08:59 PM

#26

j9fd3s

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From: https://www2.mazda.com/en/100th/

in case anyone cares a stock T2 BSFC is 255g/psh @3000rpm, so its a little worse than the cosmo, at 7000rpm, its about 400g/psh

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Typical BSFC for a rotary-s5-13b-t-dyno.jpg

Feb 4, 2019 | 03:08 PM

#27

Clubuser

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From: Treasure coast

Quote:

Originally Posted by j9fd3s

in case anyone cares a stock T2 BSFC is 255g/psh @3000rpm, so its a little worse than the cosmo, at 7000rpm, its about 400g/psh

psh = .735 kW.h
(255 g/psh) x (psh/.735 kW.h) = 347 g/kW.h
BSFC [g/(kW⋅h)] = BSFC [lb/(hp⋅h)] × 608.277

BSFC @3000rpm, 347 g/KW.h / 608.277 = .57 lb/hp.h
BSFC @7000rpm, 400/255 x .57 = .89 lb/hp.h

what BSFC can we expect from an S5 turbo, stock ports, hybrid turbo, big front mount IC, un-restricted exhaust, and proper tuning @ peak power?

assuming .8 BSFC and 750cc/min x 4 = 3000cc/min, x .095 = 295 lb/h of max fuel:

295/.8 x .85 DC = 313 bhp! That's it?

Last edited by Clubuser; Feb 4, 2019 at 03:18 PM.