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2005 2.5rs Dark Blue
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Discussion Starter · #1 ·
I've been looking into supercharging my 2.5rs lately, and I found a company in Australia (Raptor Superchargers, www.raptorsc.com.au) that wants to develop a kit in the U.S. What they would need, tho, is for someone to be able to leave their car with their distributor in Horicon, Wisconsin (928 Motorsports, www.928motorsports.com) for about 2 months in September. They will use your car as a model, and for your contribution they will give you 20% off on the kit. I looked at one of their raptor supercharger kits, and it goes for $1875. I'm assuming that the kit for our cars would be in that ballpark, but I didn't ask. As some may know, the AVO turbo kits go for $4000, so it would be about half the cost of that.

Unfortunately, I can't be the one to leave my car with them, because it's literally across the country from me, and I need my car for school. Hopefully we can find someone to do this, because I would love to get a supercharger kit for my rs. Either let me know if you can leave your car with them and I will email the guy at 928 Motorsports, or you can email him directly. Please keep this thread updated tho!
 

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99 black Impreza, 03 legacy DD
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104 Posts
this would be nice I've been checking out raptors website but they have yet to post up a price. I'd do it but I live to far. supercharged subaru FTW!
 

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V4 Sti BRP, 98LGT SP, 94SVX PW
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731 Posts
best off DIY.
EM is the costly part. As I assume your on an RS block. 6 PSi safe 8-10 max
12 its blown?
As far as the SC itself. Can score low PSi ones cheap on Ebay.
But then again ECS just sold (or still are) selling that 20G with ECU and harness for $2500
You could just swap.
If $2500 is way to out of your price range leave your car as it is.
 

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HERO DEEP!!!
Lt. Dan the 2000 OBS
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756 Posts
Wow, you give them your car for 2 months and all you get is a discount? that shit better be free if I was letting em use it for 2 months.
 

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1998 Subaru Impreza RS - RBP
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Wow, you give them your car for 2 months and all you get is a discount? that shit better be free if I was letting em use it for 2 months.
Yeah, screw leaving my car with them for two months as their guinea pig for only a 20% discount. When I go to pick up the car, they better thank me and tell me to enjoy the new supercharger!

Just my $.02
 

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Black 2005 2.5 RS
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I've been to 928motorsports website before, and they do have have the Raptor supercharger itself for $1875.00 but I that's just for the head unit itself not for a kit. Correct me if I am wrong. However, Raptors price for the supercharger itself are comparable to Vortech's V-5 G trim supercharger. It would also be nice to see some compressor maps from Raptor as well.
 

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2001 STM Sedan
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leaving a car as a guinea pig is the stupidest thing anyone could do. You wouldn't know what the fuck could happen to your car when your not around or what condish the block will be in after they dink with it.
 

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Wait, it's their own SC unit? Not a kit made from a Vortech or something? If so, I didn't know that.

As far as I know Skidd, Raptor makes thier own supercharger. That's why I said it would be nice to see a compressor map from Raptor since the prices are comparable.
 

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The Silverback Mod
05 Black OBS
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leaving a car as a guinea pig is the stupidest thing anyone could do. You wouldn't know what the fuck could happen to your car when your not around or what condish the block will be in after they dink with it.
+1 on that. AND for only a "discount". Sounds like Darwin at work... :bitehard:
 

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leave them a car for 2 whole months so they can bank on subie owners buying thier kit allfor a 20% discount....yea..they can suck off.
 

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2001 BRP Subaru Impreza 2.5RS
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796 Posts
20% is way too little of a "discount" for having the car for two months. There should be better incentives then that. If it were a discount at least up the percent to 80%-free or at least pay the guy/girl a nice compensation for using his/her car.
 

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2000 2.5RS, Sedona Red
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This may be off topic, but does anyone know a good reference for a DIY supercharger thread? My car isnt worth the cost and effort to go turbo but Ive been playing with the idea of low PSI S/C'ing (daily driver). The Mercedes C230 superchargers look perfect for my idea but Im not sure how intensely I need to modify the motor depending on boost etc.

Anyone have a quick link?
 

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Meany Head
2000 RSC
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10,236 Posts
This may be off topic, but does anyone know a good reference for a DIY supercharger thread? My car isnt worth the cost and effort to go turbo but Ive been playing with the idea of low PSI S/C'ing (daily driver). The Mercedes C230 superchargers look perfect for my idea but Im not sure how intensely I need to modify the motor depending on boost etc.

Anyone have a quick link?
I'm afraid there isn't (that I know of) a DIY thread for SCing our cars. If you look for posts by Redevil here and on nasioc, you'll find his 2.2L supercharger project, that I believe is now a 2.5L twin charged bad boy. Not a DIY, but lots of photos and good info.
 

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2000 2.5RS, Sedona Red
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I'm afraid there isn't (that I know of) a DIY thread for SCing our cars. If you look for posts by Redevil here and on nasioc, you'll find his 2.2L supercharger project, that I believe is now a 2.5L twin charged bad boy. Not a DIY, but lots of photos and good info.
That is the response I was expecting unfortunately.

I dont see supercharging to be a huge task with a little understanding of the way a charger works. as far as the kit goes, you only need to be able to create the bracketry, hoses for air and oil, and a custom pulley. The bracketry must be for fitment with the existing belt system...very simple. The hoses are as easy as doing a custom intake kit for air and running another pressurized line for oil. The pulley, with some mathematical understanding, is a relatively simple build for anyone with lathe experience and the ability to calculate the optimal diameter for the expected boost.

As a mechanical engineer that all sounds easy enough to do myself. The problem is in the fact that I DONT know much about my 2000 2.5 RS engine. If I were to hit, say, 5-8PSI of boost would I require large modifications to the engine to be able to handle the extra power?

These are the things Im wondering...
 

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leaving a car as a guinea pig is the stupidest thing anyone could do.
Thats how most of these kits get developed. Please understand that when the Ferrari and Porsche owners leave their cars with us, they are at least as nervous as you are.

Photos are taken, odometer readings are written down. The car is going nowhere but from here to the dyno 2 times - one for the baseline and the 2nd for the "after" pulls.

We specialise in high-end supercharger kits and our quality will pass any inspection. We will not guess, so I will not produce a kit from CAD drawings or spec sheet. We require the vehicle in the shop to model on so we are assured of getting it right.

For example: Porsche built the 928 for 17 years from 1978 to 1995. Rather than taking our first kit and saying "will fit all years" we meticulously brought in one of each model from each year to CONFIRM that the kit works and make the neccesary adjustments.

Would you want it any other way?

Please review the information at www.928motorsports.com/superchargers.html

However, if you are uncomforatble providing your Imprezza for us to model on in return for a discount, then you are not the guy we are looking for. Thats OK.

We will wait until someone will.

Carl Fausett
Owner
928 Motorsports, LLC
 

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The Silverback Mod
05 Black OBS
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8,896 Posts
Thats how most of these kits get developed. Please understand that when the Ferrari and Porsche owners leave their cars with us, they are at least as nervous as you are.
I think you missed the point. Of course it takes a donor car to develop a kit (or suspension, exhaust, ECU maps etc.). And yes you are EXPECTED to test completely before you release your product. The problem, (after 20+ years of helping tuners develop products and offering input, testing etc. from Porsche to BMW to Subaru) is when the completed product is up and running I received it FREE or at a VERY big discount for putting my car up to test.

I think what you are hearing here, is 20% is NOT worth the risk ~ end of story?
 
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