i need some help with the math!

[mossaidis]

Math forthcoming....

2000 BMW 323 Ci

2.5L hp I6
chp 170 @ 5500 RPM
ctorque 181 @ 3500 RPM
Bore X Stroke 3.31 X 2.95
Compression Ratio 10.5:1

https://ams.scca.com/netForum/eweb/d...%20Process.pdf

170 * 1.25 (IT gains) * 0.82 (driveline loss RWD) = 174.25 whp * 12.9 lbs/hp (ITS multipler) = 2248 w/o adders or 2250

Do you have excessively large brakes? It's a BMW, I would assume so, +100 (in your face!)... so 2350.
Could there be a torque adder? maybe, if so then add another +100 (in your face... maybe)... so 2450

no way.

Let's try the other way around...

3000 - 100 = 2900 / 12.9 lbs/hp = 225 whp...
225 whp / 0.82 = 274 chp

OR

3000 - 200 = 2800 / 12.9 lbs/hp = 217 whp...
217 whp / 0.82 = 265 chp

Either I forgot to add something or you need to lots of luck ( I mean $).

Confirmed that the 99-00 323is/i seems like the same car as your 323 Ci.

[lawtonglenn]

170 * 1.25 (IT gains) * 0.82 (driveline loss RWD) = 174.25 whp * 12.9 lbs/hp (ITS multipler) = 2248 w/o adders or 2250

Do you have excessively large brakes? It's a BMW, I would assume so, +100 (in your face!)... so 2350.
Could there be a torque adder? maybe, if so then add another +100 (in your face... maybe)... so 2450

IIRC the process weight is on crank hp, so you don't include the 0.82

so... maybe:

170 * 1.30 (BMW IT gains) = 221 * 12.9 lbs/hp (ITS multipler) = 2850 + 50 brakes + 50 torques + 50 wishbones? = 3000

[RSTPerformance]

Tim- when "converted" to ITR what car model does it become? How much needs to be swapped? I only ask as I know this is your ultimate goal.

Raymond

[Knestis]

1. Y'all are making this harder than it need to be, actually doing math. Ron's guesses are about as good as one is going to get if the question is about how much power is going to be necessary to get it in the competitive ballpark.

2. The car is listed in S - not in R and not in both. There's no such thing as upgrading to a class above any given car's spec line.

K

[Andy Bettencourt]

The cars here have to make AT LEAST 200whp. I've said it before...I have seen no dyno sheets but at the same weight as our ITR S2000 in it's debut and shake down, they were able to pull out and pass at WGI and we had 205whp at the time.

The 'upgrade' being spoken of is probably a 2.5, 2.8 or 3.0 swap.

[gran racing]

You're crazy Tim. lol

[Dano77]

The guy hangs of High Tension Power Poles in a Blizzard/Hurricane, you pick the natural disaster, So that we can quickly get back on line and update our Stuff. And he does it 18 hours on 6 off for weeks on end after the disaster, while living in a hotel room or the front seat of a line truck.

Its taken you this long to figure out hes crazy. We have all known it for years.

Tim have you recieved the call form OK yet? It might be a bit too far.

[mossaidis]

IIRC the process weight is on crank hp, so you don't include the 0.82

so... maybe:

170 * 1.30 (BMW IT gains) = 221 * 12.9 lbs/hp (ITS multipler) = 2850 + 50 brakes + 50 torques + 50 wishbones? = 3000

Thanks Glenn, I think you got, except I don't think BMW's come with DW suspensions. Perhaps 50 adder for brakes and 100 for torque. By those numbers Tim needs to put down ~181-2 whp to make process power. Like Andy said, in full 10/10th mode, they probably make MUCH MORE as witnessed repeatedly.