Toymods Car Club Inc: Tech & Conversions => Mechanically stupid person seeks help with ta22 ?

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oldcorollas
Forums Junkie

Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003

Re: Mechanically stupid person seeks help with ta22 ?	Tue, 17 June 2003 12:40

not to be too narky, but i think many dyno places exagerate the figures.... also depends on which gear etc... maybe get the co-workers mate to front up to the dyno day as an example check outhttp://www.fullboost.com.au/cars/featurecars/20 01/xe_jason/xe_jason25b.jpg they claim 1400Nm at 3000rpm, and 300kw my calculations give 940Nm at that speed. other wacky things are that the rpm figures quoted don't line up with points on the graph, and also that the torque and power curves are slightly misaligned... this is a falcon 4.1 turb'd motor with 21Psi that runs 11's but i think 1400Nm is a bit optimistic (i calculate 920Nm max from that capacity and boost taking 100% efficiency) fwiw, a good estimate of max power of an engine is to take 100Nm/L (since bikes get around that and are damn efficient) then multiply by your capacity, multiply by 1+ number of atmospheres above boost (ie 1atm boost is x2, 1.5bar boost is x2.5) since power is caluclated from torque, then plug ya rpm numbers into Nm = (9402 x kw) / rpm or kw = (Nm x rpm) / 9402 so then kw = (engine size x 100 x (1+ boost) x rpm) / 9402 where engine size is in litres, boost is in Bar or atm) and Nm = engine size x 100 x (1+ boost) you can then divide by your expected losses to get expected RWkw Cya, Stewart [Report message to a moderator]

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