Guess my BHP!

[Howard-]

So tomorrow my 1990 supercharged 1.6 is going on a rolling road.

Standard JRSC kit, no other engine mods. Apart from a TDR/K&N air filter relocation kit.


So feel free to guess my BHP at the fly and I'll be back tomorrow (sat) evening to post the results, and an e-cookie to the closest!

Bonus points for correct torque figures, as well.

Edited by Howard- on Friday 7th May 22:23

[b4bby]

Im guessing its around 160bhp and 145 torques???

Ive just had a 1.8 with a m45 rebuilt and an waiting for it to go for an mot then i'll be rolling road mine.

[MX-5 Lazza]

b4bby said:

Im guessing its around 160bhp and 145 torques???

What he said.

[MX7]

159bhp.

[skinny]

157 bhp, 144 torques, at the fly

[The Tea Boy]

163bhp and 150tq

[Conian]

164bhp
(applying the old trick from The Price Is Right, go 1 higher than the last guy)

[Howard-]

165bhp, 137 lb-ft of torque


Very pleased with that

[Conian]

ohhhhhhhhhh yes, i win! The Price Is Right tactic works again!
So i take the car as a prize?

[MX-5 Lazza]

Not a bad result! How flat was the torque curve? - how about posting a scan of the print-out?

[Howard-]

Was just about to



Pleased with the results, both curves (the red and orange are the important ones, I'm told to ignore the wheel figures on these particular dynos) are nice and linear


And this is what it was last year




Very happy with the increase and happy that I can now put figures to it!

[MX-5 Lazza]

Looks good

What have you got controlling fuel & timing?

[pbirkett]

It'll probably be a powercard and bipes, as OnlyMX5ives did the install.

[Howard-]

Close, AFPR and MSD

[Mr MXT]

I guess around 165bhp and 137lbft.

[mk1salami]

Not too sure on the in's and outs of rolling road calibration, but how can you ignore the WHP figure? Surely the flywheel power is the guesswork part?

[vigoro]

The wheel power on those rollers is done with 2 contact patches per tyre, so going to have more drag than a normal road, hence the wheel power isnt accurate.

[MX-5 Lazza]

The point being made though is that the wheels driving the rollers is the only thing being measured. The engine power is just a calculation made from the wheel power so the only accurate figure is the wheel power.