You're more than welcome to put one on your car. I see no performance benefit, and would rather spend the money on something else that hasn't been proven to cause issues long term in THOUSANDS of examples across the entire car tuning community (Yes, there are cars other than MINI's ).

 

Sorry, didn't mean to bring up a topic, which as I noted has been covered elsewhere.
But since the can of worms is open, I will say that I find it hard to understand why MINI felt a dampener was needed in the MCS (when it wasn't on the MC), unless there's a reason for it.
Comments like the one I quote above are not very convincing because one can always write off engine failures to "other factors" when the mod in question is one that may be causing engine damage from prolonged use.
Use of the crank pulley especially makes little sense (to me) in light of the fact that it's more expensive to do a 15%+2% than a 17%, for example. But I'm glad there's others out there willing to test the concept.

 

All 4 engines that I personally saw had oil gear failures.... all had cracked into pieces... THE ONLY PART COMMON TO THESE ENGINES WAS THE CRANK PULLEY......... each was in its form of mods

coincidence... I'm sure of it

 

Hmm....didn't you say in the post before mine that a crank pulley would add 2-3hp? Now you say it does absouletly nothing. I know 2-3 hp really is not that much, but it is something. Then you also said in that same post: " the power comes from the fact that it spins the SC faster." That is why I mentioned the comment about the one guy having the same SC. Some people think pullies are causing SC's to spin too fast. I was told that crank pullies can help my 03 because first gear is higher than the later models. I did feel a difference when it was installed. Now this all being said, as soon as we can get Jan up here to do some tunning, then with all the extra power we get, i'll take it off .

 

Hey Jan did you recommend to all the guy's that got your tune to remove them? I'm sure alot of them have them on. I would like to take mine off once I get a tune.

 

I always tell people to take them off If you saw the oil pump gears that I have you would too....

better to take it off before the tuning or your car will be tuned wrong

 

Ok . Hopefully soon?

 

Closer to the original question (didn't mean to interrupt) What is the supercharger boosting with just a 3% alone? 2%? 15% w/ 2% combo?

I have 30,000 miles on a 2% crank, no problems here...My old crank pulley is now used as a door stop. Very heavy (02). I noticed a faster revs all throughout the RPM range.

 

Jan I think you have just killed the mini crank pulley industry!!!!

 

I highly doubt it.... people will do what they want.... it will help me sell crate engines though....

 

Got pictures of the oil-pump gears? I've always argued the harmonic balancer was important, photo proof would be great.
Also, is there a graph somewhere so you can get an estimate of boost levels for different setups? (Stock vs. JCW vs. 15% vs. 17% and then with the different % cranks?)

 

All I know is that there are a couple on the Marketplace

 

I have an '06 S and, much like the original poster, want more power out of it (it's bone stock right now). It sounds like a 15% is the least contested method for doing so. Does that sound about right, leaving a change to an aftermarket crank by the wayside?

 

My car is getting pullied next week - I am going to get before and after dynos.
I will post them along with the rest of the mods (header, head and custom tune).
Stay tuned....

 

I have a Alta 4% on My 03 coop s I have had 0 problems with it. I have logged over 4000 miles with it vehicle runs great. Possibly the people who have had problems with it did not install it properly ? I used to be a Mini tech and I used the proper tools to put mine in. After installing it I cleared the adaptation values in the vehicle and noticed an imediate gain in performance and would recommend using it. I would however not recommend it for use on a automatic vehicle due to the fact that the vehicle has trouble with shift points.

 

Like most things that take time (Like saying "I've been smoking for 2 years and haven't noticed any problems! I'm less hungry because everything tastes like ashes, so I'm losing weight; everything is dandy!", meanwhile 20 years down the road you're dead from lung cancer), your engine isn't going to fail catastrophically after 4k miles of running without a harmonic balancer. It can, and will however shorten overall engine life.

 

Yes, spinning the SC 2-3% faster will make a few HP, at the expense of your SC spinning way over it's redline, and you pushing 120+ degree intake temperatures on the STREET.

As a member of the $20k+ mod club, that's 2-3 HP that I definitely do NOT want . I'm pretty sure Jan's joined the $100k+ mod club by now, and if he's nixing them (I'm sure he's spent a LOT more money chasing 3 HP) I want nothing to do with them.

Some info, with a 15% you're ALREADY spinning the M45 faster than it's intended spec, so it's not going to last as long as it would have. By changing your redline you've pretty much ensured premature failure of the SC (Reving the engine up another 1400k RPM's past it's previous redline isn't any different than running a 21-23% reduction on the SC). I've accepted this risk (I track my car, there's plenty more than my engine that I risk).

On the street, a quick 1st and 2nd gear pull up to redline in each will send my intake temps skyrocketing into 175 degree territory. If you think it's safe for your engine to combust 175 degree air all day long (You guys think a change in air temp from 65 to 85 degrees kills performance?) go ahead and throw all the reduction on you can.

There's a reason any website worth a damn says "A 19% pulley is for STREET USE ONLY" because prolonged time in the upper rev range with the M45 running at a speed that the 19% pushes it to can
, and will kill engine components.

 

Only 4K miles...........not nearly enough for any problems to show themselves. Is this with or without a pulley?