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Author Mini Cooper S
Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
User status: Offline
11th May 11 at 15:16   View User's Profile U2U Member Reply With Quote
Small pulley % relates to % reduction. Smaller the pulley more boost you cave man

[Edited on 11-05-2011 by Fad]
Ben G
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Registered: 12th Jan 07
Location: Essex
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11th May 11 at 15:17   View User's Profile U2U Member Reply With Quote
over my head.
Corsa_Sport21
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Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
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11th May 11 at 15:18   View User's Profile U2U Member Reply With Quote
What size is the standard pulley,just so i can work out the size of 1 that is 15% smaller.
Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
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11th May 11 at 15:18   View User's Profile U2U Member Reply With Quote
Stay away from cars and rattle cans Ben
Ben G
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Registered: 12th Jan 07
Location: Essex
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11th May 11 at 15:19   View User's Profile U2U Member Reply With Quote
rattle cans have instructions on the side, pulleys don't
Fro
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Registered: 20th Jun 06
Location: Rainham, Essex Drives: A3 2.0TDi Sport
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11th May 11 at 15:27   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Ben G
over my head.


e.g if you had a pully which was 100mm and you went for a 15% reduction you would be getting a pully that is 85mm.
Ojc
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Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
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11th May 11 at 15:28   View User's Profile U2U Member Reply With Quote
21.

Standard Cooper S has a larger pulley than say the JCW which is 11% smaller than the standard Cooper S pulley

So on a JCW you would really only want a 4% smaller pulley which I don't think even exists.
Corsa_Sport21
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Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
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11th May 11 at 15:38   View User's Profile U2U Member Reply With Quote
But from what number do they pull these %'s from??
Warren G
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Registered: 14th May 06
Location: Kent
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11th May 11 at 15:47   View User's Profile U2U Member Reply With Quote
the standard size

mini i was getting has just snapped its timing chain, might be getting dirt cheap
Corsa_Sport21
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Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
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11th May 11 at 15:49   View User's Profile U2U Member Reply With Quote
Whats the standard size??
Warren G
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Registered: 14th May 06
Location: Kent
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11th May 11 at 15:54   View User's Profile U2U Member Reply With Quote
does it matter?
Corsa_Sport21
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Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
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11th May 11 at 15:58   View User's Profile U2U Member Reply With Quote
Yes.

Gives me a better idea of how much smaller a 15% pulley is.
Warren G
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Registered: 14th May 06
Location: Kent
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11th May 11 at 16:01   View User's Profile U2U Member Reply With Quote
ermmmm 15% less

around 50-60mm at a guess
Steve X16XE
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Registered: 31st Dec 06
Location: Barnsley, South Yorkshire
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11th May 11 at 16:47   View User's Profile U2U Member Reply With Quote
The early model OE pulley is 65.5mm, the later model 65mm.
Fro
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Registered: 20th Jun 06
Location: Rainham, Essex Drives: A3 2.0TDi Sport
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11th May 11 at 22:52   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Warren G
the standard size

mini i was getting has just snapped its timing chain, might be getting dirt cheap


High miles? Talk to me wazza.
Eck
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Registered: 17th Apr 06
Location: Lundin Links, Fife
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12th May 11 at 06:51   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by mwg
MCS MK1
0-60 7.45
0-100 20.41

MCS MK2
0-60 6.99
0-100 18.60

Corrado VR6
0-60 6.92
0-100 18.09

MCS Works MK1
0-60 6.29
0-100 15.99

JCW MK2
0-60 6.28
0-100 15.83


I expected a bit better tbh
3CorsaMeal
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Registered: 11th Apr 02
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12th May 11 at 09:33   View User's Profile U2U Member Reply With Quote
Corrrado figures are wrong anyway.
mwg
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Registered: 19th Feb 04
Location: South Lakes
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12th May 11 at 09:47   View User's Profile U2U Member Reply With Quote
let me guess it's faster than that a race around the nurburgring is the only way to resolve this

[Edited on 12-05-2011 by mwg]
3CorsaMeal
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Registered: 11th Apr 02
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12th May 11 at 10:00   View User's Profile U2U Member Reply With Quote
might be the american stats
3CorsaMeal
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Registered: 11th Apr 02
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12th May 11 at 10:01   View User's Profile U2U Member Reply With Quote
http://corrado-vr6.info/performance.htm
Brett
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Registered: 16th Dec 02
Location: Manchester
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12th May 11 at 10:09   View Garage View User's Profile U2U Member Reply With Quote
Probably slightly faster now with the rusty speed holes.
3CorsaMeal
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Registered: 11th Apr 02
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12th May 11 at 10:10   View User's Profile U2U Member Reply With Quote
yep, and the BMC and exhaust, must add 10bhp at least
3CorsaMeal
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Registered: 11th Apr 02
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12th May 11 at 10:11   View User's Profile U2U Member Reply With Quote
i tell people its 200bhp anyway
jr
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Registered: 20th May 02
Location: Kent
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12th May 11 at 13:10   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Ben G
over my head.


think about it like gears on a bike, smaller the pulley, the faster your legs would turn to gain one revoloution

now if the crank is driving the supercharger via a pulley, the smaller pulley will alloy for more revolutions dispite the same rpm
jr
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Registered: 20th May 02
Location: Kent
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12th May 11 at 13:10   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Ben G
over my head.


you assemble engines for a living dont you ?

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