Here's a quote from I pasted from another thread, this came from "Stiegemeier" http://www.stiegemeier.com/pricing.html

What do you guy's think?


Porting your supercharger is an option that will increase the efficiency of your blower, adds boost in many cases, and lowers inlet air temps.

Porting the blower also increases your HP. The exact amount of power gain is based on many factors. Some of the more important factors are your engine displacement, pulley size, headers/exhaust combination, ignition and plugs and the quality of your tune. For example, a properly tuned 03' Cobra with a reasonable choice of exhaust and pulley could improve as much as 50 HP (maybe more). However this same car with fouled out plugs and/or improperly gapped plugs may only gain half the HP. Basically the quality and combination of modifications will either amplify the effect of the ported blower or tend to mute it's effect.

Also, please keep in mind that not all engines are equal. A Mini-Cooper motor simply does not have the capacity of air flow that a Cobra motor has. For instance, if you start with 150 HP and gain 15 HP from your ported blower, that is the same percentage gain as a 400 HP engine gaining 40 HP.



Wonder if they really did before and after dynos for the Mini? If so, then wow this would be a good deal. 10% more hp for $395., thats the price of porting a SC. If you start with 200hp you would gain 20hp.......sounds to good to be true? What does everybody think?

 

Do you know what exactly they are porting on our M45? That link is blocked here at work.

 

looks good for the money and they seem to know theyre stuff. have they had any before and after results dyno proven?

 

Not really sure what they do, most likely would have to call them. Here is some more info. off their site:



Mini-Cooper Supercharger Porting and Options:

Blower Porting Only $395
Front-Drive Rebuild Only $295
Blower Porting Plus Front-Drive Rebuild $595
Front-Drive Rebuild Plus Water Pump Drive Rebuild $795
Blower Porting, Front-Drive Rebuild, and Water Pump Drive Rebuild $895


What do we do with the supercharger after it arrives:

The blower case is then ported achieving the CORRECT balance of low pressure to high pressure. (Low pressure meaning the inlet side and High pressure meaning the exit side.) Careful attention is paid to ALL areas to achieve the highest airflow rates and still retain case rigidity. Designs are constantly being tested and updated to assure you the largest HP gains available GUARANTEED. All of our airflow test data was recorded using an SF 600 Superflow Flow bench. The rotors are profiled, blueprinted and timed to the case.

After porting all gasket surfaces are checked for flatness and machined if necessary. The machined parts are put through a three phase cleaning process. The last phase consisting of a high pressure 190 degree rotisserie wash. All superchargers are assembled with factory correct full synthetic grease and oil. All fasteners are torqued to spec. After final assembly the superchargers are spun at speed and checked with an amplified hearing system to ensure you of a perfect assembly. In addition all superchargers are cataloged, numbered and dated.

 

Seen this before and if true looks to be a great deal!!! Love to hear if anyone here can back up the claims.... Certainly couldn't hurt but a 10% gain is pretty strong and seems like a lot of folks would have been all over this if true...

 

I'm with you on this, like I said "sounds to good to be true"..........but maybe?

 

Talking specifically of the MCS M45...I can see them porting the inlet side, as i'm sure the casting is not optimal from the factory.
I would like to know what they do to the outlet side, because without the horn...there is not much of an outlet.
I can't see that they would port the inside of the case, because wouldn't that increase the rotor-to-sidewall clearance?

 

The cool thing about this is that it appears that they can rebuild a bad supercharger

 

 

Yeah, it 'sounds' good, but believe it when you see the data (i.e. dyno plots)

 

Eaton must be finally selling the gears now. I was told that was the problem before, they wouldn't sell the internals for the M45.

 

just sent mine down will post my thoughts when it comes back. Car is apart at 100K so figured better have the SC rebuilt before the water pump drive gos out to lunch

 

I had an M62 ported and an exterior polish from them and the turn around time was under 2 weeks! Dyno showed a gain of 7hp and slightly lower IATs. But 7hp for that cost sucks :( and that was on a larger SC.

 

There was someone on here selling their car that had their supercharger done by Stiegemeier. Said it made a noticeable difference, but alas, no dyno's...it'd be interesting to see what it does. Qtip, keep us updated!

 

I had my supercharger rebuilt my stiegemier a couple of month's ago and they do quality work. I don't know anything about the porting though.

 

Did they do anything to the water pump gears?

 

Please keep us informed Are you porting yours only?

So you had no gears installed? Seems like if you need both sets of gears the porting only adds another $100. not to bad

 

Yep - see this thread
https://www.northamericanmotoring.co...r-pricing.html

Great news!

 

Aren't they the people who did the superchargers for M7? What are the claimed results on their unit.

 

The water pump drive was what went on my s/c and they replaced the gears. Cost about $600 for the rebuild. Don't remember what price they quoted me for porting, but I believe it was a bit higher than what their website said.

 

OSent it out for a full rebuild with porting. I spun the SC by hand when it was off the car. it had a points that were sticking. I did not check an see if the water pump drive was at fault...but the gears are being replaced any way

 

Porting the SC is a good PROVEN way to bump the flow!! But , as stated above.. 7-10 WHP is a bit pricey unless the SC is trached and needs rebuild...yes??

You can pick up that much HP with just advancing the stock camshaft... or the Shrick!! and the adjustable cam gear is a lot cheaper... yes??

Just me..................................

Thumper

 

Yea by it'self porting is $395, but it seems if you need a complete rebuild, they say in their pricing, that it would only be another $100. Should be well worth it

 

def worth it for the rebuild but not for the lack of HP you gain for the $$$

def worth doing the cam pulley which is a fraction of the price.

 

fwiw, the power bump doesn't seem to be what it is for the Cobras and the like with the larger SCs. For those who are interested, these are the guys that did the M7 ported SCs from a while back. I'm thinking that you're not gonna see 20 hp out of this. FWIW, Endyn does this work as well, and there's another shop or two (don't remember the names right now) that do it as well that you can find if you search (here).

If you dig a little deeper, there are coatings that can be done and the like. Coatings help close the gaps between the roters and the case, and can decrease leakage and reversion.

Some of the companies close the noise reduction ports. This will increase both noise and boost, but IATs will climb a bit with this mod as well. I don't remember just how much.

Gotta love the internet.... This was a lively debate about 3-4 years ago...

https://www.northamericanmotoring.co...roots-scs.html

Matt