Power figures

[mattxr2]

Put my e30 on the rollers at the wkend

Mods are
328i m52
Unknown remap
M50 inlet
Exhaust
M50 airbox with k&n panel filter

Made 233.9 bhp @ fly wheel 186lb/ft
206.7bhp at the wheels.

Anyone eles have any figures to compare with, I'll get the graph up when I get a min

[ryan_gwa]

Thats good news for me, as my set-up is near identical. Unfortunately I havent finished it yet, so no Dyno run yet.

[Neilios]

Over 200bhp at the wheels is quite respectable for an E30, hope mine is around that level when finished.

[mattxr2]

They were quite surprised, ran it again to check and it made the best figures on the last run, graphs where pretty much the same, a mates e36 made 221bhp 208lb/ft

Mines pretty fast on the road for the power

[e30rapidic]

I imagine that's a fun car to drive. What diff/trans are you using?

[rich318i]

where did you get this test done?

if thats the case my M52b28 with S52 cams and so on...

mine should be 250+ at the fly easy if you got that

[mattxr2]

I'm using an m40 box with a 3.73 welder, will be fitting an zf box and s50 3.2 at some point, its on its 5th m40 box.


It was rolled at Viking auto Center, like I said a mates car of similar spec made the results above on the same rollers, it was more to check the map.

[327ire]

I got 227bhp with my M52b28, 0-60 @ under 6 seconds
BBTB,
M50 intake
K&N intake

The torque figures can be ignored, theres no way Im making 238lbs!

[reggid]

Put my e30 on the rollers at the wkend

Mods are
328i m52
Unknown remap
M50 inlet
Exhaust
M50 airbox with k&n panel filter

Made 233.9 bhp @ fly wheel 186lb/ft
206.7bhp at the wheels.

Anyone eles have any figures to compare with, I'll get the graph up when I get a min

186 torques at the wheels or fly?

[mattxr2]

Flywheel I assume



I'm more surprised by the map, I bought it off eBay 2 years ago and have always been a bit concerned of the quality

[mattxr2]

Was run on a sun dynamometer, calibrated to 380bhp

[DanThe]

I would expect to see more torque than that TBH, the hp is over reading by about 10 so not sure why the lbft is down

[reggid]

almost no chance that your peak hp is at 7000rpm and peak torque at 6200rpm like that sheet says, that is why the torque is low. they stuffed up the rpm pickup or calibration factor for mph to rpm, so the rpms are out of whack making torque lower.

if you work out correct rpm at 100mph in that gear you will probably see

[rich318i]

thats the USA for ya

[reggid]

thats the USA for ya

USA?

seems like only the Europeans are obsessed with getting flywheel numbers from measuring at the wheels and using fudge factors.....

[Rav335uk]

I would expect to see more torque than that TBH, the hp is over reading by about 10 so not sure why the lbft is down

That's M52's for you!...

M30 FTW!!

[DanThe]

almost no chance that your peak hp is at 7000rpm and peak torque at 6200rpm like that sheet says, that is why the torque is low. they stuffed up the rpm pickup or calibration factor for mph to rpm, so the rpms are out of whack making torque lower.

if you work out correct rpm at 100mph in that gear you will probably see

You are correct, M52 makes peak power at around 6000rpm, torque at around 5k

As its around 1000rpm out could it be possible running it in 3rd gear would mess up the rpm calculator? M40 box 4th gear is 1:1

[reggid]

i'm not sure with that particular dyno. most operators are too lazy to hookup a pickup sensor to get the real rpm so some read off the speedo and rpm and get a conversion factor this can be out considerably if they do it at low speed/rpm.

this is why i ask for plots of power vs km/h and instead of torque i ask for tractive effort since these are straight from the dyno itself.

[mattxr2]

It was run in 4th gear, my rev counter is out so they set it at 30mph, it was a rolling road day so not much time was spent doing it as you'd expect, it was more a case of checking the Ecu wasn't dud, they did say the revs would be out