between getting a JCW from factory versus having dealer install it at a later time. JCW car 208 HP Vs. 189 HP if installed later. Both upgrade get JCW CAI, exhaust, and ECU. Am I missing something?

Thanks!

 

Turbo and better ECU tuning. Oh and better engine internals

 

What parts of the internals are better?

the pistons are slightly lower compression but what else

 

Where can I read about these internals? I assume you mean cam and crankshaft etc?

Anyone know if the JCW turbo is a direct interchangeable swap between the S and the factory JCW?

 

The rods are the same, valves and even head... only difference is :


Pistons, turbo charger, sensors and other goodies, exhaust, intake , tune

Yes it is a direct swap but will require a good tune and you will not be able to run anything over 21psi. been done before with good results and will make more power than a jcw can due to the half a point extra of compression. Will require a good tune though.

 

Different/better clutch with the JCW (doesn't have anything to do with power). But the JCW tuning kit from the dealer is also about $6000 less than the factory car.

 

touche forgot that one, trans gearing i think is diff, suspension /brakes.


Its generally a more "refined" vehicle

 

My opinion on Jcw Tuning kit Cooper s vs Factory JCW

The jcw tuning kit is a nice power upgrade for the Cooper s that is covered by mini warranty but you can do better power and expense wise going aftermarket but lose powertrain warranty coverage.

A Factory Jcw is outfitted from mini with a stronger powertrain and brake system while having the same suspension upgrades that are available for the Cooper/Cooper S from factory/dealer/aftermarket.

To upgrade a cooper s to the level(brakes,trans,engine) of a Factory Jcw is not worth the time/effort/expense,just buy a factory Jcw and be done with it and have better resale and factory warranty coverage.

Flame away Cooper s owners.lol

For sale 2009 pepperwhite/black JCW prem pak,armrest,sunroof,cruise,auto ac,mfsw and a load of Jcw parts ,koni nm suspension,$6000 stereo,$4000 wheels and new tires 11800 miles.over 40k invested in build and car purchase $27995 obo warranty until aug 2013.

 

Lower compression could be the major thing. Lower compression means you can cram in MOAR BOOST before it goes "kaboom!" MOAR BOOST means MOAR POWAH--more than you lose from dropping the compression a bit, for certain! The response when the engine is off-boost would be a little worse, but again it is more than made up for when the engine gets on-boost.

 

Don't all JCWs come with a JCW ported cylinder head?

 

Not on the turbo cars.

 

Interesting, I thought they did. Thanks for clearing that up

 

List it in the marketplace?

 

I may when i get serious about selling it.Should do it soon because the only time I drive it is to listen to the stereo.But can say I enjoy driving the 1m more now that it has 430whp.

 

You are right in what your saying, but in this case its half a point so its more to reduce knock/detonation

If it was a full or more than a full point then you could substantially increase boost more.

the factory jcw is a better vehicle, that being said there is nothing wrong with the s as well. Obviously in stock form there is a Huge difference but once tuned up a bit you wont be disappointed.

I soley got the S because i stumbled upon a laurel.


All good stuff

 

I believe you'll find that the JCW does run a little more boost. The extra detonation resistance is needed because they up the boost a bit. And a half-point is a decent amount of compression.

 

That is obvious but half a point will not lower cylinder pressures a drastic amount. 11.7 to the jcw's 18+/- psi... half a point of compression will not warrant a 6psi increase. Both motors are strung out from the factory. The high compression aids in quick spool

The amount of boost does provide more power but the power comes from the more air flowing through the hybrid charger. 19psi from a ko3<19psi from the ko3 hybrid


PS im not argueing what your saying but with these motors* they stayed high compression in order to aid spool. A 1.6 does not produce much exhaust especially if its low comp

 

Highest I have seen on a 100% stock engine and ecu JCW is 15lbs. Rmw modded ecu on otherwise stock jcw 20lbs.

all data was 80 feet above sea level and 78f temp and non overboost condition.

 

Even better