MINI2

GARY GP · Oct 3rd, 2006, 07:50 AM

Does any one know the correct size of the std s charger pulley that is fitted on the GP!

T-bone S · Oct 3rd, 2006, 11:48 AM

Same as the one on a JCW Supercharger - c14.5% reduction from a stock MCS pulley

venox22 · Oct 3rd, 2006, 12:04 PM

JCW's are 100% not 14.5 reduction, they are 11%. on 2005 onwards anyway imo

I know this as there John Cooper 225 HPD kit isnt even 14.5% Why would they design a 225kit with a bigger pulley(hence less boost)??

The one i measured in my hands and roland from GTT was 11% smaller!! I think there has been some confusion from they way people have actually been measuring them, the only way is with the pulley in your hands with a pair of vernier calipers, not on the car with a tape measure

T-bone S · Oct 3rd, 2006, 01:48 PM

I have not measured one myself - but have read alot about this -

Roland has measured only one @ 11% and the others that he has measured have been c14.2-14.5% - All of these were on the car. The consensus worldwide is that the JCW pulley is around a 14% reduction

In the last thread that was posted ref: pulley sizes - I did pose the question to Roland to see if he could measure one again.

Check Roland's comment here - Clicky

venox22 · Oct 3rd, 2006, 02:10 PM

hmmm id put money on all JCW's 2005 onwards being 11%!!

Yeah Roland too says he'd like to measure more, guess we'll never find out unless all JCW owners start ripping there pulleys of for a quick measure

GBMINI · Oct 3rd, 2006, 03:25 PM

Doesn't matter what size it is - it's the performance that's important

T-bone S · Oct 3rd, 2006, 03:44 PM

Quote: Originally Posted by GBMINI (original)

Doesn't matter what size it is - it's the performance that's important

Someone has been trying to save your feelings!!!

venox22 · Oct 3rd, 2006, 04:02 PM

Lol!!!!

Quote: Originally Posted by GBMINI (original)

Doesn't matter what size it is - it's the performance that's important

jimmyxp · Nov 27th, 2006, 12:32 AM

just to clarify, i have an 06 jcw, and was told by my dealer that the upgrade did not include a smaller pulley, when i asked if it was possible to get a reduced pulley from jcw they said they didnt do one?? and had never heard of one? if they jcw do a pulley does anybody know how much it is? how much reduction and if the warranty is affected? sorry if this sounds stupid but the dealers confused me big time. thanks

MINIAC · Nov 27th, 2006, 12:49 AM

Quote: Originally Posted by jimmyxp (original)

just to clarify, i have an 06 jcw, and was told by my dealer that the upgrade did not include a smaller pulley.

Your dealer doesn't know what they're talking about ... the supercharger in the JCW Kit has a reduction pulley.

venox22 · Nov 27th, 2006, 05:27 PM

Quote: Originally Posted by MINIAC (original)

Your dealer doesn't know what they're talking about ....

Do any dealers actually know what they are talking about????????? its really frightening the actual lack of knowledge they have

jimmyxp · Nov 27th, 2006, 08:28 PM

rigght haha bloody dealers confuse me. so is it worth me gettin an even more reduced pulley? or would it start being unreliable?

RacerXSPF · Nov 29th, 2006, 11:13 PM

How about the crank pulley on a GP. Anyone know what kind of performance gains to be had with a 2%??

GARY GP · Nov 30th, 2006, 04:45 PM

Quote: Originally Posted by RacerXSPF (original)

How about the crank pulley on a GP. Anyone know what kind of performance gains to be had with a 2%??

I have just fitted a GTT 2%crank pulley to my GP it works very well it spins up a bit quicker. i also fitted a GTT safety bar in case the belt snaps a must have part. i also fitted a GTT works replacement filter it is a bit better air flow and sounds better too. and i fitted colder plugs, get rid of you works plugs sometimes the electrodes break off and fall in the bores, and smash a hole in your piston be (warned) all good stuff

roland2003 · Jul 20th, 2007, 11:52 AM

Hi , weve just measured a GP S/C pulley and it calculates to -12%. So is the same as the JCW ones.
Best Regards Roland GTT

MOTOR'N · Jul 20th, 2007, 12:28 PM

Quote: Originally Posted by roland2003 (original)

Hi , weve just measured a GP S/C pulley and it calculates to -12%. So is the same as the JCW ones.
Best Regards Roland GTT

Roland, just to clarify. The GP pulley is 12 percent smaller and not the afore mentioned
14+/- percent?

roland2003 · Jul 20th, 2007, 01:12 PM

..Hi, both JCW and GP supercharger pulleys are 12% smaller diameter than the standard MCS ones. We've got a GP in today for the GTT +3% Crank Pulley, GTT TB Idler pulley ,GTT Tensioner Pulley ,GTT Tensioner Stop ,GTT/JCW Filter etc so weve been able to measure accuratly.......Give me a couple of hours and Ill tell you the boost too, as were fitting a boost guage too....should be around 15psi-16psi.with these mods.
Best Regards Roland GTT

AprilWhine · Jul 20th, 2007, 01:54 PM

Thank you Roland, I was curious.

roland2003 · Jul 20th, 2007, 02:17 PM

......15.5psi at 6500rpm WOT in third with fully warmed engine

Snowie · Jul 21st, 2007, 01:06 PM

Quote: Originally Posted by roland2003 (original)

......15.5psi at 6500rpm WOT in third with fully warmed engine

Confirmed - thanks for the work yesterday Roland. Should be back on the Dyno next Thursday.

Even more smiles per mile now

Alan

Oct 3rd, 2006, 07:50 AM	#1
GARY GP GP-1528 My Classifieds Join Date: Jun 2005 Local Time: 08:26 AM Posts: 859 Offline	GP S C pulley size Does any one know the correct size of the std s charger pulley that is fitted on the GP!

Oct 3rd, 2006, 11:48 AM	#2 (permalink)
T-bone S MINI2 Senior Join Date: May 2006 Location: Berkshire Local Time: 07:26 AM Posts: 571 Offline	Same as the one on a JCW Supercharger - c14.5% reduction from a stock MCS pulley MY05 MINI COOPER S - DS/B - GTT OPTIMISED- THANKS FOR THE RIDE - ENTER THE R56 JCW

Oct 3rd, 2006, 01:48 PM	#4 (permalink)
T-bone S MINI2 Senior Join Date: May 2006 Location: Berkshire Local Time: 07:26 AM Posts: 571 Offline	I have not measured one myself - but have read alot about this - Roland has measured only one @ 11% and the others that he has measured have been c14.2-14.5% - All of these were on the car. The consensus worldwide is that the JCW pulley is around a 14% reduction In the last thread that was posted ref: pulley sizes - I did pose the question to Roland to see if he could measure one again. Check Roland's comment here - Clicky MY05 MINI COOPER S - DS/B - GTT OPTIMISED- THANKS FOR THE RIDE - ENTER THE R56 JCW

Oct 3rd, 2006, 03:25 PM	#6 (permalink)
GBMINI MINI2 Master Join Date: Jun 2002 Location: Gloucester, MA, USA Local Time: 03:26 AM Posts: 7,604 Offline	Doesn't matter what size it is - it's the performance that's important Ian C. Gloucester, MA, USA (UK expat) driving GPMINI and Convertible GBMINI#6

Oct 3rd, 2006, 03:44 PM	#7 (permalink)
T-bone S MINI2 Senior Join Date: May 2006 Location: Berkshire Local Time: 07:26 AM Posts: 571 Offline	Quote: Originally Posted by GBMINI (original) Doesn't matter what size it is - it's the performance that's important Someone has been trying to save your feelings!!! MY05 MINI COOPER S - DS/B - GTT OPTIMISED- THANKS FOR THE RIDE - ENTER THE R56 JCW

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Oct 3rd, 2006, 12:04 PM	#3 (permalink)
venox22 only the brave! Join Date: Dec 2004 Location: Lincs Local Time: 08:26 AM Posts: 1,430 Offline	JCW's are 100% not 14.5 reduction, they are 11%. on 2005 onwards anyway imo I know this as there John Cooper 225 HPD kit isnt even 14.5% Why would they design a 225kit with a bigger pulley(hence less boost)?? The one i measured in my hands and roland from GTT was 11% smaller!! I think there has been some confusion from they way people have actually been measuring them, the only way is with the pulley in your hands with a pair of vernier calipers, not on the car with a tape measure

Oct 3rd, 2006, 02:10 PM	#5 (permalink)
venox22 only the brave! Join Date: Dec 2004 Location: Lincs Local Time: 08:26 AM Posts: 1,430 Offline	hmmm id put money on all JCW's 2005 onwards being 11%!! Yeah Roland too says he'd like to measure more, guess we'll never find out unless all JCW owners start ripping there pulleys of for a quick measure

Oct 3rd, 2006, 04:02 PM	#8 (permalink)
venox22 only the brave! Join Date: Dec 2004 Location: Lincs Local Time: 08:26 AM Posts: 1,430 Offline	Lol!!!! Quote: Originally Posted by GBMINI (original) Doesn't matter what size it is - it's the performance that's important

Nov 27th, 2006, 12:32 AM	#9 (permalink)
jimmyxp MINI2 Regular Join Date: Oct 2003 Location: leeds Local Time: 07:26 AM Posts: 155 Offline	just to clarify, i have an 06 jcw, and was told by my dealer that the upgrade did not include a smaller pulley, when i asked if it was possible to get a reduced pulley from jcw they said they didnt do one?? and had never heard of one? if they jcw do a pulley does anybody know how much it is? how much reduction and if the warranty is affected? sorry if this sounds stupid but the dealers confused me big time. thanks

Nov 27th, 2006, 12:49 AM	#10 (permalink)
MINIAC MINI Profiler Join Date: Feb 2001 Location: City By The Bay Local Time: 12:26 AM Posts: 8,715 Offline	Quote: Originally Posted by jimmyxp (original) just to clarify, i have an 06 jcw, and was told by my dealer that the upgrade did not include a smaller pulley. Your dealer doesn't know what they're talking about ... the supercharger in the JCW Kit has a reduction pulley.

Nov 27th, 2006, 05:27 PM	#11 (permalink)
venox22 only the brave! Join Date: Dec 2004 Location: Lincs Local Time: 08:26 AM Posts: 1,430 Offline	Quote: Originally Posted by MINIAC (original) Your dealer doesn't know what they're talking about .... Do any dealers actually know what they are talking about????????? its really frightening the actual lack of knowledge they have

Nov 27th, 2006, 08:28 PM	#12 (permalink)
jimmyxp MINI2 Regular Join Date: Oct 2003 Location: leeds Local Time: 07:26 AM Posts: 155 Offline	rigght haha bloody dealers confuse me. so is it worth me gettin an even more reduced pulley? or would it start being unreliable?

Nov 29th, 2006, 11:13 PM	#13 (permalink)
RacerXSPF GP #1207 Join Date: Nov 2006 Local Time: 11:26 PM Posts: 5 Offline	How about the crank pulley on a GP. Anyone know what kind of performance gains to be had with a 2%??

Nov 30th, 2006, 04:45 PM	#14 (permalink)
GARY GP GP-1528 My Classifieds Join Date: Jun 2005 Local Time: 08:26 AM Posts: 859 Offline	Quote: Originally Posted by RacerXSPF (original) How about the crank pulley on a GP. Anyone know what kind of performance gains to be had with a 2%?? I have just fitted a GTT 2%crank pulley to my GP it works very well it spins up a bit quicker. i also fitted a GTT safety bar in case the belt snaps a must have part. i also fitted a GTT works replacement filter it is a bit better air flow and sounds better too. and i fitted colder plugs, get rid of you works plugs sometimes the electrodes break off and fall in the bores, and smash a hole in your piston be (warned) all good stuff

Jul 20th, 2007, 11:52 AM	#15 (permalink)
roland2003 MINI 2 Sponsor GT Tuning Join Date: Jan 2004 Local Time: 08:26 AM Posts: 2,740 Offline	Hi , weve just measured a GP S/C pulley and it calculates to -12%. So is the same as the JCW ones. Best Regards Roland GTT www.gttuning.com

Jul 20th, 2007, 12:28 PM	#16 (permalink)
MOTOR'N Miniac Join Date: Nov 2002 Location: Lexington, KY. Local Time: 03:26 AM Posts: 116 Offline	Quote: Originally Posted by roland2003 (original) Hi , weve just measured a GP S/C pulley and it calculates to -12%. So is the same as the JCW ones. Best Regards Roland GTT Roland, just to clarify. The GP pulley is 12 percent smaller and not the afore mentioned 14+/- percent? "Les go wacin" ZILLA RACING '06 JCW GP# 0095

Jul 20th, 2007, 01:12 PM	#17 (permalink)
roland2003 MINI 2 Sponsor GT Tuning Join Date: Jan 2004 Local Time: 08:26 AM Posts: 2,740 Offline	..Hi, both JCW and GP supercharger pulleys are 12% smaller diameter than the standard MCS ones. We've got a GP in today for the GTT +3% Crank Pulley, GTT TB Idler pulley ,GTT Tensioner Pulley ,GTT Tensioner Stop ,GTT/JCW Filter etc so weve been able to measure accuratly.......Give me a couple of hours and Ill tell you the boost too, as were fitting a boost guage too....should be around 15psi-16psi.with these mods. Best Regards Roland GTT www.gttuning.com

Jul 20th, 2007, 01:54 PM	#18 (permalink)
AprilWhine Loves the Fuzzy One Join Date: Mar 2002 Location: Gypsy Local Time: 12:26 AM Posts: 17,046 Offline	Thank you Roland, I was curious. Global Moderator

Jul 20th, 2007, 02:17 PM	#19 (permalink)
roland2003 MINI 2 Sponsor GT Tuning Join Date: Jan 2004 Local Time: 08:26 AM Posts: 2,740 Offline	......15.5psi at 6500rpm WOT in third with fully warmed engine www.gttuning.com

Jul 21st, 2007, 01:06 PM	#20 (permalink)
Snowie MINI2 Master Join Date: Aug 2006 Location: Modena IT /Camberley Local Time: 07:26 AM Posts: 1,680 Online	Quote: Originally Posted by roland2003 (original) ......15.5psi at 6500rpm WOT in third with fully warmed engine Confirmed - thanks for the work yesterday Roland. Should be back on the Dyno next Thursday. Even more smiles per mile now Alan

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