MINI2 - MINI Forum - View Single Post

roland2003 · Sep 14th, 2006, 08:32 AM

Hi Guys,
STOCK CRANK PULLEY DIAMETER is 138.5mm +/- 0.1mm . This is what I have very accuratly measured to the 'top of the V groove form' on 2 early types and 2 later types. So no differece in drive ratios between early and late,just weight.
BTW we do a stock size, a +3% and a 'new' +1% GTT lightweight 2pc Alloy Crank Pulley. The latter is not on the website - they are all the same price.
JCW SC PULLEY DIAMETER tbh I havnt measured many of these as they need to be off the car to get an accurate measurement and usually we give them back to the customer. Of the ones I did measure one was around -11.5% the other 14%. I'd like to measure more before I can conclude anything on this
Best Regards Roland GT Tuning.

Sep 14th, 2006, 08:32 AM	#50
roland2003 MINI 2 Sponsor GT Tuning Join Date: Jan 2004 Local Time: 01:59 PM Posts: 2,759 Offline	Hi Guys, STOCK CRANK PULLEY DIAMETER is 138.5mm +/- 0.1mm . This is what I have very accuratly measured to the 'top of the V groove form' on 2 early types and 2 later types. So no differece in drive ratios between early and late,just weight. BTW we do a stock size, a +3% and a 'new' +1% GTT lightweight 2pc Alloy Crank Pulley. The latter is not on the website - they are all the same price. JCW SC PULLEY DIAMETER tbh I havnt measured many of these as they need to be off the car to get an accurate measurement and usually we give them back to the customer. Of the ones I did measure one was around -11.5% the other 14%. I'd like to measure more before I can conclude anything on this Best Regards Roland GT Tuning. www.gttuning.com