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04-08-2006, 01:53 AM | #1 |
Scooby Newbie
Member#: 111784
Join Date: Apr 2006
Chapter/Region:
NESIC
Location: Willington, Connecticut
Vehicle:1998 Impreza 2.5RS Acadia Green Metallic |
Supercharge or not to supercharge, that is the question.
So I've been hearing a lot about superchargers for my 2.5rs. I have a 98 dohc and I am wondering if there is even a supercharger kit out for this car. Basically, I came across a vishnu turbo kit with 10k on it, do I continue the long lost search for a supercharger kit, buy a stage 3 forced air tech kit or do I pick up this slightly used Vishnu kit? Any imput would be greatly appreciated.
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04-08-2006, 02:34 AM | #2 |
Scooby Guru
Member#: 64673
Join Date: Jun 2004
Chapter/Region:
NWIC
Location: portland
Vehicle:1990 Legacy wagon goes 12.387 @ 116.5 |
There is no SC kit. It is all DIY.
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04-08-2006, 09:14 AM | #3 |
Scooby Newbie
Member#: 59353
Join Date: Apr 2004
Chapter/Region:
Tri-State
Location: Alfred and Ithaca NY
Vehicle:2003 2.5 TS-Turbo Pearl Ridge Blue |
all depends on how much money and work you want to put in, More money= less work (usualy) a kit will also go in much faster than some sort of custom setup, but if you want to be unique (at least more so) go with a supercharger + you have no lag and that would be fun as hell
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04-08-2006, 09:45 AM | #4 |
Scooby Newbie
Member#: 111784
Join Date: Apr 2006
Chapter/Region:
NESIC
Location: Willington, Connecticut
Vehicle:1998 Impreza 2.5RS Acadia Green Metallic |
Well, I did find a supercharger kit,raptor superchargers. My main goal with this car is to run stock bottom end and stock trans but have some boost around the autocross track. I'm starting to race this car and thought SC would be best for autocross with the fact of having no lag out of corners. Also, I am a Ford SVT Lightning owner, and Ford tech, and I have a lot of experience in the SC department.
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04-08-2006, 10:35 AM | #5 |
Scooby Guru
Member#: 177
Join Date: Aug 1999
Chapter/Region:
NWIC
Location: Austin, Texas, USA
Vehicle:The 93 W/EJ20K-sold Subaru-less :( |
hmm for $5000 you should be able to buy the parts to do a sti engien swap and have it not blow up
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04-08-2006, 10:35 AM | #6 | |
RIP 10/12/83 to 02/10/08
Scooby Specialist Member#: 83254
Join Date: Mar 2005
Chapter/Region:
NWIC
Location: Roy, Washington
Vehicle:98 2.5 RS 04 WRX |
Quote:
You really need to evaluate what your goals are for the car. If you are really planning on Autocross, a supercharger is a great option but it has to be custom and will be very expensive compared to a turbocharger. IMO the GT30R is a big turbo to be running on a stock bottom end. It would be cheaper to build a turbo kit from used WRX parts, the TD04 will spool super fast on a 2.5L which would be good for Auto-X. And by cheaper I mean you could probably source all the parts used for less than $1000. |
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04-08-2006, 12:49 PM | #7 |
Scooby Guru
Member#: 64673
Join Date: Jun 2004
Chapter/Region:
NWIC
Location: portland
Vehicle:1990 Legacy wagon goes 12.387 @ 116.5 |
The raptor kit doesn not exist as an item for sale..... It was tested and failed. The Raptor website talks about it, but also says they will be available in August 2005, but then say they are not ready yet.
Anyway, the developer had the internal belts on the SC fail. So he stopped work on the kit. My SC works, and its fun, but it was a fair amount of work. And none of it was "kitted", it was all fabbed by me. |
04-08-2006, 01:45 PM | #8 |
Scooby Newbie
Member#: 111784
Join Date: Apr 2006
Chapter/Region:
NESIC
Location: Willington, Connecticut
Vehicle:1998 Impreza 2.5RS Acadia Green Metallic |
Ok, well I thank everyone, as I am convinced now not to go the supercharger route. As far as the turbo route goes, I found a jdm twin turbo kit that supposedly will bolth right up to my motor and all i will need is a engine management system. Would I be better off playing with this kit, the gentlemen said would sell for $300, or purchasing something like the FAT kit? Also, I came across a vishnu kit for $1500. Would it be worth picking that kit up? If it does come down to it, how hard is an sti engine and trans swap?
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04-08-2006, 01:52 PM | #9 |
Scooby Guru
Member#: 64673
Join Date: Jun 2004
Chapter/Region:
NWIC
Location: portland
Vehicle:1990 Legacy wagon goes 12.387 @ 116.5 |
The twin turbo kit will work.....If you have a left hand drive car.
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04-08-2006, 08:29 PM | #10 |
Scooby Newbie
Member#: 53595
Join Date: Jan 2004
Chapter/Region:
NWIC
Location: nowehres
Vehicle:1987 GL Hatch EA81 1.6L + Weber |
not to mention to use a stock turbo exhaust manifold you would need the turbo crossmember.
reddevil: what are you running for EM, injectors? |
04-08-2006, 09:15 PM | #11 |
Scooby Newbie
Member#: 93364
Join Date: Aug 2005
Chapter/Region:
RMIC
Location: Arvada CO
Vehicle:1998 '98 Impreza RST '14 BRZ |
Your best bet is to do a wrx engine swap. The motors are getting easier to find and many shops are now doing swaps. You would have no tuning to do and have a reliable fast car because of your 4:11 final drive in your factory tranny.
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04-08-2006, 09:43 PM | #12 |
Scooby Guru
Member#: 64673
Join Date: Jun 2004
Chapter/Region:
NWIC
Location: portland
Vehicle:1990 Legacy wagon goes 12.387 @ 116.5 |
Perfect Power SMT6 and 370 cc injectors. 370 cc injectors are good on the 2.2 up to 200 plus whp or so....... with the right tune.....
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04-09-2006, 02:04 AM | #13 |
Scooby Newbie
Member#: 111784
Join Date: Apr 2006
Chapter/Region:
NESIC
Location: Willington, Connecticut
Vehicle:1998 Impreza 2.5RS Acadia Green Metallic |
I actually found an 03 wrx engine with 60k on it for $1000. What else would I need to do the swap besides the motor? Would I need the wrx computer? cross members? etc?
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04-09-2006, 08:21 AM | #14 |
Scooby Specialist
Member#: 92372
Join Date: Jul 2005
Chapter/Region:
RMIC
Location: Roy
Vehicle:2008 Black on Black |
for a fact your gonna need the wiring harness, ecu, tranny and prolly the drive shaft (someone correct me if Im wrong), 3.9 final gear ratio, crossmember, and Im sure I left some stuff off but someone will pick up the slack
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04-09-2006, 12:06 PM | #15 | |
Scooby Newbie
Member#: 93364
Join Date: Aug 2005
Chapter/Region:
RMIC
Location: Arvada CO
Vehicle:1998 '98 Impreza RST '14 BRZ |
Quote:
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