MINI2

chico67 · Feb 9th, 2002, 03:22 PM

Just wondering what, if any, engine components are
different between the Cooper and the One.

Obviously the engine block is the same but are the
injection and exhaust systems, etc different or is
the extra power of the Cooper version just achieved with
a different map in the management system?

smiffy · Feb 9th, 2002, 03:42 PM

Take a butchers using the data section

chico67 · Feb 9th, 2002, 06:19 PM

I've had a look at the data section and it doesn't shed any light on the the phyisical differences.

Dom · Feb 9th, 2002, 06:38 PM

I think the differences are mainly in the ECU, as superchips can map them both to the same BHP using the same chip. Rumour has it that superchips are bringing out a 150bhp chip for the cooper, which would imply engine differences. Not sure if there's any truth behind this though, haven't really looked.

Hope that helps,

Dom

jomini · Feb 9th, 2002, 08:25 PM

As far as I know there are no mechanical differences between the ONE and the COOPER engine. The lack of power of the ONE results in decreased maximum opening angle of the electronic controlled intake throttle.
The final gear ratios are diferent: around 3.5:1 for the ONE, 3.9:1 for the COOPER, which means, where the cooper revs 5000 1/min, zhe ONE is only revving 4500 1/min - this you can feel in a better flexibility of the COOPER.
The exhaust layouts are different as well. The COOPER has two silencers (one in the middle, one under the boot) the ONE has only one (maybe that's where its name comes from

) under the boot - not very ideal in regards of exhaust flow.
If you would fit a ONE exhaust on a COOPER it probably would have less power.
The sound of the COOPER exhaust is IMO much better than that of the ONE.

j.

Racer · Feb 10th, 2002, 10:45 AM

Quote:

Originally posted by Dom
I think the differences are mainly in the ECU, as superchips can map them both to the same BHP using the same chip. Rumour has it that superchips are bringing out a 150bhp chip for the cooper, which would imply engine differences. Not sure if there's any truth behind this though, haven't really looked.

Hope that helps,

Dom

Works Club Sport has re-flashed ECU presumably to allow for greater air intake / exhaust flow but also to move the power curve slighlty - I would guess the same is true of the differences between a one and a cooper

Silverstone · Feb 16th, 2002, 10:59 AM

jomini is right, the One and Cooper engines are mechanically identical. The only differences are the ECU / throttle calibration, the exhaust and the final drive ratio.

Feb 9th, 2002, 03:22 PM	#1
chico67 MINI2 Newbie Join Date: Feb 2002 Local Time: 07:29 AM Posts: 4 Offline	Engine differences between Cooper and One ? Just wondering what, if any, engine components are different between the Cooper and the One. Obviously the engine block is the same but are the injection and exhaust systems, etc different or is the extra power of the Cooper version just achieved with a different map in the management system?

Feb 9th, 2002, 03:42 PM	#2 (permalink)
smiffy MINI2 Master Join Date: Aug 2001 Location: Here Local Time: 07:29 AM Posts: 5,859 Offline	Take a butchers using the data section S for Smiffy "Kids in the front seat cause accidents, accidents in the backseat cause kids!"

Feb 9th, 2002, 08:25 PM	#5 (permalink)
jomini MINI2 Newbie Join Date: Jan 2002 Location: Munich, Germany Local Time: 08:29 AM Posts: 16 Offline	As far as I know there are no mechanical differences between the ONE and the COOPER engine. The lack of power of the ONE results in decreased maximum opening angle of the electronic controlled intake throttle. The final gear ratios are diferent: around 3.5:1 for the ONE, 3.9:1 for the COOPER, which means, where the cooper revs 5000 1/min, zhe ONE is only revving 4500 1/min - this you can feel in a better flexibility of the COOPER. The exhaust layouts are different as well. The COOPER has two silencers (one in the middle, one under the boot) the ONE has only one (maybe that's where its name comes from ) under the boot - not very ideal in regards of exhaust flow. If you would fit a ONE exhaust on a COOPER it probably would have less power. The sound of the COOPER exhaust is IMO much better than that of the ONE. j. jomini IndieBlueWhite Chilli Cooper, Panther black, aircon, multifunctional steering wheel, BC, CD Changer, Dunlop Runflats on silver 16" FiveStars, SSP+, heated jets

Feb 10th, 2002, 10:45 AM	#6 (permalink)
Racer Sponsor,Moderator & Racer Join Date: Jan 2002 Location: Kent Local Time: 08:29 AM Posts: 1,459 Offline	Quote: Originally posted by Dom I think the differences are mainly in the ECU, as superchips can map them both to the same BHP using the same chip. Rumour has it that superchips are bringing out a 150bhp chip for the cooper, which would imply engine differences. Not sure if there's any truth behind this though, haven't really looked. Hope that helps, Dom Works Club Sport has re-flashed ECU presumably to allow for greater air intake / exhaust flow but also to move the power curve slighlty - I would guess the same is true of the differences between a one and a cooper JCW Club Sport Kawasaki Green / White Unofficial John Cooper Challenge Site

Feb 16th, 2002, 10:59 AM	#7 (permalink)
Silverstone MINI2 Regular Join Date: Jun 2001 Location: Silverstone Local Time: 07:29 AM Posts: 157 Offline	No Difference jomini is right, the One and Cooper engines are mechanically identical. The only differences are the ECU / throttle calibration, the exhaust and the final drive ratio. Cooper Chili - Silk Green & Black, Climate Contol, Heated Jets, ASC+T, Alarm Arrived Nov 30 - Love it to bits

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Feb 9th, 2002, 06:19 PM	#3 (permalink)
chico67 MINI2 Newbie Join Date: Feb 2002 Local Time: 07:29 AM Posts: 4 Offline	I've had a look at the data section and it doesn't shed any light on the the phyisical differences.

Feb 9th, 2002, 06:38 PM	#4 (permalink)
Dom Test thread infiltrator Join Date: Oct 2001 Location: Swindon Local Time: 08:29 AM Posts: 8,875 Offline	I think the differences are mainly in the ECU, as superchips can map them both to the same BHP using the same chip. Rumour has it that superchips are bringing out a 150bhp chip for the cooper, which would imply engine differences. Not sure if there's any truth behind this though, haven't really looked. Hope that helps, Dom

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