Since it’s officially Cooper Friday (and DIY Friday if you didn’t notice) here at MotoringFile I thought I’d pull out all the stops. Behold, the mother of all DIY projects, the full JCW Cooper Engine Kit. Like its close cousin, the JCW MCS Engine Kit (and another monster DIY in it’s own right) the Cooper JCW kit is best kept in the hands of the professionals. However as a perspective buyer, it’s always nice to see what exactly goes into both the kit and installation.
For those that might not new MINI oldsters (how’s that for a contradictory term) the JCW Cooper kit was the first product sold for the new MINI from JCW. It’s rated at 126bhp and the peak power comes on earlier and is more readily available. The torque goes up 4lbft to 114 and it's peak is actually 4750rpm rather than the standard cars 4500rpm level. You can see the full chart here.
Cooper owners can grab the full DIY PDF below:
[ Full JCW Cooper Engine Kit ] Official MINI Installation Instructions
Related:
[ The JCW Cooper Kit Components ] MotoringFile
Interesting to see that there seems to be a mix up on pages 4 and 5 of the document. It shows a cylinder head labelled ‘A’ but identifies A as a ‘Supercharger’. Sure looks like a cylinder head to me.
Wow, nice to know that part A on page 3 is known as a supercharger according to the parts list on page 4. Whoops!
Hey I liked the Friday Movie featurette. Bonzo Get’s a MINI! Ferris Bueller’s MINI?
I love how Page 5 identifies the cylinder head as a supercharger in letter A.
Has anybody done this upgrade on a cooper? I’d love to know what it’s like. I have my second MCS and I’m going to a 2006 Cooper in April. There’s something about a Cooper that I can’t stay away from.
I am the only person that I know of in the US who has this JCW Tuning Kit for the Cooper. There must be more out there. Mine is No. 475. Power is more noticeable in the 2000-4000 rpm range and it has a deeper sound with a slight burble.
The install takes 5 hours.
This will only fit a 2002-2004 MC with manual transmission.
MyMini has one for sale for less than retail.
I sent MotoringFile a review of my JCW Tuning Kit, so hopefully they will publish it.
Note: PS (Pferdestaerke) indicates METRIC horsepower, which converts to 124 SAE horsepower.
Also, their 0 – 60 times are slower than what MINI publishes for a stock Cooper. 8.9 seconds?
Should we press BMW AG for that “Supercharger” mentioned on page 4?
For all those that don’t read before posting:
Hey did anyone else notice that the Cooper has a super charger on page four?
And a software upgrade from MTH goes to 135Bhp? I’ll stick with MTH thanks!