E36 M3 - Power at the wheels?

[andy97]

Can anyone tell me what he power at the wheels of a 5 speed 3.0 litre M3 should b e please ( assuming all ok ). I know what the manufacturer quoted figures are, but these are at the flywheel, I assume. Thanks.

[andy97]

Yes, I understand that dynos differ, but surely a ball park figure is possible, plus or minus 2-3 %?

[andy97]

Grateful for you help. So, whp seems to be about 80% of flywheel hp?

Therefore it' seems reasonable to estimate that the 3.0 M3 to give approx 228 at the wheels? Or very approx, 190 Bhp per tonne for a basic spec stripped out race car that I estimate to weigh about 1200kg??? (I haven't weighed it yet either, I'll do that when I get it out on a track or text day)

[andy97]

iguana said:

All dynos read differently, you need to go to the one/ones specified as control for your series.

I've dyno'd a pair of my 3.0 m3 at a local dyno that seems not as optimistic as most, but have the calc'd flywheel fig not the at the wheels figs. 265 & 275.

Thanks for your help - the figures are very useful.

I fully understand the issue of using the "control dynos", but one race series I am considering has classes based on power to weight, but has decided that to reduce hassle for the competitor there is no longer a control Dyno. Instead we have to nominate our power when we register/ enter races and they may Dyno us on a mobile Dyno at the circuit.

I will get the car on a dyno but I'd like ball park figures to help me with my series choice before I even go near a Dyno.