E30 Zone

Posted: **Thu Oct 12, 2006 5:28 pm**

Got my car on the rollers this morning and was quite impressed with the results

215 Hp @ 6000 RPM
194 Lbs/ft Torque @ 5650 RPM

Not bad considering it left the factory 15 years ago with an expected 192 Hp and 181 Lbs/ft Torque

Mods so far- no cats, Scorpion middle and back box, no viscous, M20 flywheel and a Viper 2 chip

Posted: **Thu Oct 12, 2006 5:39 pm**

RESPECT!

I need to get my unichip sorted!

Andy

Posted: **Thu Oct 12, 2006 5:45 pm**

Like those numbers and if your car pulls from 20mph in 5th gear the way mine (M50 Tourer) does, it's even more impressive!

Just need to chase Ant up about fitting my Megasquirt.

Posted: **Thu Oct 12, 2006 9:21 pm**

Yeah, it does pull well at low speed in fifth

Still needs another gear though,

Next plan is a 2.8 bottom end

Posted: **Thu Oct 12, 2006 9:36 pm**

Thats a nice torque curve, or lack of !!

Posted: **Thu Oct 12, 2006 9:43 pm**

Respect Dan,dont ya just love it

Got to say,after driving my iS for the last 12 months,2nd and 3rd gear in an M50 is mental fun(esp with my auto diff)1

Posted: **Thu Oct 12, 2006 9:54 pm**

wow thats pretty impressive cant wait to get mine done

Posted: **Thu Oct 12, 2006 9:56 pm**

Thats what a torque curve should look like

Posted: **Thu Oct 12, 2006 10:27 pm**

maxfield wrote:Thats what a torque curve should look like

Yep, you gotta love the graph

Much nicer than other printouts ive seen

Apparantly if I can get some better breathing it will make those curves a lot smoother.

And who said an M50 conversion was a waste of time

Posted: **Thu Oct 12, 2006 11:05 pm**

Hmm interesting those plots dont seem to intersect eachother at the expected place.

Me dont think you have 215bhp Sorry

andrew

Posted: **Thu Oct 12, 2006 11:09 pm**

Demlotcrew wrote:Hmm interesting those plots dont seem to intersect eachother at the expected place.

andrew

Only just noticed that, it is wierd, should be a few thousand RPM higher....

Posted: **Thu Oct 12, 2006 11:28 pm**

What does it matter? Ive seen plenty of graphs where the cross over ranges from 3 to 6k

Posted: **Thu Oct 12, 2006 11:36 pm**

If the graph is showing Lbs/Ft and Bhp, then it should cross at 5252rpm

Horsepower = Torque x rpm / 5252.

Maybe its a Metric graph in Kw or Ps......

Posted: **Thu Oct 12, 2006 11:40 pm**

ang on.........

Not on the same axis...........so it will be all skew wiff.........

Posted: **Thu Oct 12, 2006 11:47 pm**

Yeah, look at the values, theyre not on the same lines

200 Hp is much higher than 200 Lbs/ft

Maybe I DO have 215 Hp

Can it be?

Posted: **Thu Oct 12, 2006 11:51 pm**

Figures fit my arithmetic OK.
185 X 6050 / 5252 = 213

Posted: **Fri Oct 13, 2006 9:09 am**

Brianmoooore wrote:Figures fit my arithmetic OK.
185 X 6050 / 5252 = 213

Brian where are you getting those numbers from?

andrew

Posted: **Fri Oct 13, 2006 3:48 pm**

Demlotcrew wrote:
Brianmoooore wrote:Figures fit my arithmetic OK.
185 X 6050 / 5252 = 213
Brian where are you getting those numbers from?

andrew

torque figure x rpm / 5252 = power
- look at the torque figure on its scale on the y axis to the right, as mentioned the scales of the y axis are different for torque and power which is why its looks wrong.

Posted: **Fri Oct 13, 2006 7:59 pm**

DanThe wrote: And who said an M50 conversion was a waste of time

The Zone's very own armchair mechanics

Andy

Posted: **Sun Oct 15, 2006 10:13 am**

tim_s wrote:
Demlotcrew wrote:
Brianmoooore wrote:Figures fit my arithmetic OK.
185 X 6050 / 5252 = 213
Brian where are you getting those numbers from?

andrew
torque figure x rpm / 5252 = power
- look at the torque figure on its scale on the y axis to the right, as mentioned the scales of the y axis are different for torque and power which is why its looks wrong.

Yes i know the formular, but where is Brian getting the torque figure and the rpm from that graph to get 213bhp?

Andrew

Posted: **Sun Oct 15, 2006 11:44 am**

he is getting rpm figure from where peak power is show on the graph, and then finding roughly what the tourque value is at that RPM point i think, Andrew

Posted: **Sun Oct 15, 2006 12:01 pm**

peak power appox 6050rpm
torque @ 6050rpm = 185lf/ft approx.

Looks like where Brian got his figures...

Posted: **Sun Oct 15, 2006 2:50 pm**

well done dan, hats off to you fella.

Posted: **Sun Oct 15, 2006 6:33 pm**

DanThe wrote: 215 Hp @ 6000 RPM
194 Lbs/ft Torque @ 5650 RPM

Mark why would he need to look at
the graph when the peak power and the
RPM is shown in the first post?

Can you see what im getting at?

209bhp if hes very lucky!

Andrew

Posted: **Sun Oct 15, 2006 7:17 pm**

Demlotcrew wrote: 209bhp if hes very lucky!

The power bar goes way above 210hp, if the machine does lie like you keep insinuating then how can you work out 209? Surley if its wrong then you have no figures to work off at all.

What is the problem here?

Posted: **Sun Oct 15, 2006 7:23 pm**

Cheers Twiggy

Maybe I should put up a poll,

Option 1 - Real printout?
Option 2 - Photoshop printout?

Posted: **Sun Oct 15, 2006 8:08 pm**

DanThe wrote: What is the problem here?

Exactly what I've been thinking all along.
Figures add up for any point on the chart.

Posted: **Sun Oct 15, 2006 8:26 pm**

Hang on Brian, dont forget, this conversion hasnt had "proper money" spent on it

Maybe thats why its so hard to belive

Posted: **Sun Oct 15, 2006 8:33 pm**

DanThe wrote:Hang on Brian, dont forget, this conversion hasnt had "proper money" spent on it

Maybe thats why its so hard to belive

Don't forget, I'm the one who paid Ãƒ”šÃ‚£60 for my last M50B25 vanos engine and box, complete with the rest of the front of the E36 it came from! Going into a mint Ãƒ”šÃ‚£170-00 tourer.

Posted: **Sun Oct 15, 2006 8:36 pm**

i work for silverlakes m8 we get all sorts of bmws in once they have cleared we break

the site keeps blocking me from pm you

Posted: **Sun Oct 15, 2006 8:46 pm**

Brianmoooore wrote:Ãƒ”šÃ‚£60 for my last M50B25 vanos engine and box, complete with the rest of the front of the E36 it came from! Going into a mint Ãƒ”šÃ‚£170-00 tourer.

I hope your not expecting anything more than 17 Hp then

Posted: **Sun Oct 15, 2006 8:57 pm**

suzukinutter wrote:i work for silverlakes m8 we get all sorts of bmws in once they have cleared we break

the site keeps blocking me from pm you

You could become a very popular member of this site! Who can't you PM?

Posted: **Sun Oct 15, 2006 8:58 pm**

He's trying to PM me Brian

Posted: **Sun Oct 15, 2006 9:28 pm**

it just says you are attempting a scripting attack and i will be reported to the web master
and wont let me reply

Posted: **Sun Oct 15, 2006 9:42 pm**

Demlotcrew wrote:
209bhp if hes very lucky!

209 BHP is a still a great achivement for a pretty standard M50B25 (not totally sure what Dan has done to it)

Andy

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