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Old 10-24-2001, 10:52 PM   #1
ImprezaRSX
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Question Supercharger For 2.5rs?

Does anyone make a positive displacement (roots type) blower for the 2.5? or any boxer 4? Maybe something I could modify?
Any help is greatly appreciated.
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Old 10-24-2001, 11:27 PM   #2
Ikonosin
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The only supercharger I'm aware of is from Rimmer . I think a few other companies sell rimmer superchargers, just rebadged.

Scott
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Old 10-25-2001, 02:32 AM   #3
ImprezaRS dot com
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JC Sports said they bought the rights to the rimmer supercharger, then they too shut down.
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Old 10-25-2001, 02:43 AM   #4
Eric SS
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ACtually, if you look at the general board, there is a post on this. JC sports is still alive and yes, Rimmer is the only company that makes one for our car but A turbo has been shown to be better for our cars

Eric
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Old 10-25-2001, 03:47 AM   #5
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The main advantage of a turbo kit is that you can actually get one. Rimmer really spoiled the image of superchargers for our cars with their offensive business practices. I'm sure a quality supercharger kit would sell quite well as the install and maintenance would be much simpler than a turbo.


Ben
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Old 10-25-2001, 04:13 AM   #6
ImprezaRSX
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WOW GUYS THANKS!
that was amazing response time!
Anyone heard of running a turbo and a blower on the subys?
just some crazy idea some people tell me.... but it makes sense if you really think about it.

I know some diesel engines that run a turbine off the crank shaft to create boost at low RPM and when exhaust gas pressure is high enough the gears disengage and it acts like a turbo. Of course the RPM range isn't anywhere near ours.

I believe the same concept could be done with a blower and a turbo. Turbo feeds blower....
instead of pressurizing cylinders it's pressurizing the area in the supercharger- which essentially lessens the load on the blower and frees up that power.
You'd have low rpm low boost for good torque and even higher boost at high RPMs PLUS the added efficiency of a turbo. After all a turbo is really free HP right? Unspent exhaust energy...
OF course I could be out to lunch....
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Old 10-25-2001, 04:20 AM   #7
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It's been done and is frequently suggested here. The amount of space, plumbing, weight, etc required is just absurd. Whatever benefit such a system might have is totally overshadowed by the reality of how complex it would be. Please don't suggest a sequential twin turbo now.


Ben
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Old 10-25-2001, 02:47 PM   #8
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Theres a Supercharger kit coming out soon, check out the SE forum to see what I'm talking about.
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Old 10-25-2001, 08:14 PM   #9
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What about running a parallel sequential (quad turbo) setup?
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Old 10-25-2001, 08:16 PM   #10
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Just kidding
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Old 10-25-2001, 09:53 PM   #11
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Contact Templar on this board...He is designing a killer setup...One that no-one has yet in the US...I won't get into details...but its going to be SUWEEEEEEEEEEEEET....
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Old 10-26-2001, 08:44 AM   #12
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you can check out mine here:
http://www.universeg.com/impreza
it's a rimmer.
g
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Old 10-26-2001, 09:04 AM   #13
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The Lancia Delta S4 rally car ran a turbo and supercharger setup, which was highly successful - once they worked the bugs out. Check it out on this page:

http://www.stormloader.com/groupb/lancia.html

and here:

http://www.stormloader.com/groupb/history.html

The car dominated its class for a short time, but when a fiery crash killed driver Henri Toivonen and his codriver it led to the end of the group b rally class.
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Old 10-26-2001, 12:16 PM   #14
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Old 10-29-2001, 08:41 PM   #15
ARG
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Unhappy Ugh...ok....

I don't know if I should even post to this thread. I have a Rimmer kit that actually works (after I modded the sheite out of it).

You can take a look at it here:

http://members.i-club.com/ViewMember...44&PicNumber=4

I really enjoy driving my supercharged car. Yes, I know that the WRX is the "cat's a$$" right now but that's ok.

I'm getting the STi when it comes out and I am keeping my "classic" rally blue coupe.

Superchargers have such an awesome whine when driving. Sounds like an F-16 on take off.

L8ts, ARG
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Old 10-29-2001, 09:42 PM   #16
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Thumbs up Oops!

Hey Arg,

I didn't get a chance to warn these guys of you. Hehe! I know you kinda dispise these posts about the turbocharger being better than the supercharger stuff. I'm glad to hear about yours still running well.

Beware of Arg and Edekker folks. I wouldn't underestimate there supercharged RS's by any means.

Now I wish you guys get to the track sometime and send me a timeslip before you two are extinct. I really admire your rides and want some time(s) to get a grasp of what a supercharger is capable of. Even if the time is lower than expected, you supercharged guys rolling around don't have the support like the turbo folks. I can't imagine what a well tuned high psi supercharged RS would be like. Take care man!
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Old 10-29-2001, 11:55 PM   #17
ImprezaRSX
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Default Re: Ugh...ok....

Quote:
Originally posted by ARG
[b]I don't know if I should even post to this thread. I have a Rimmer kit that actually works (after I modded the sheite out of it).
What did you have to do? Please let me know. I need to know what I'm about to get myself into.

Thanks,
Dominic

If you want, my email is dtitan@yahoo.com
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Old 10-30-2001, 03:58 AM   #18
bsquare
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He had to mod it because the Rimmer "kit" was a freaking joke. You didn't somehow manage to get a Rimmer kit, did you?


Ben
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Old 10-30-2001, 08:09 AM   #19
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Sorry to ask but what was wrong with the "kit" also what should I search for to get the whole story if it has been posted.
-Neal
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Old 10-30-2001, 08:57 AM   #20
HRE | giulio
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the major problem with mine was that the flange that bolted to the intake manifold had a bad angle. it was almost 10° off. I had to fabricate a metal wedge as an adapter plate. I think edekker had the same problem with his side mount, the mounting bracket wasnt aligned right, so the pulley wasnt straight with the belts (or something like that).
Aside from that, the usual stuff. It didnt come with any fueling or timing gadgets.
Everyone who drives my car loves it, even V6 owners...
"wow, the power is right there!"
"holy crap first gear is fuqqin crazy"

3rd and 4th gear are a little sluggy... then it opens up again in 5th gear. it goes past 100mph effortlessly. fun ^.^
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Old 10-30-2001, 09:30 AM   #21
ImprezaRSX
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hmmm
so what would you say (approx) it would cost for all the equipment to do a proper install?
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Old 10-30-2001, 11:42 AM   #22
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An update, in case anyoneís interested:

Iíve just recently had the valve lash adjusted; it hadnít been adjusted 10,000km since the Cobb street cams were installed and itís made a noticeable improvement approaching top end.

As we speak, Iím having the J&S Safeguard installed (the 2-Channel Plus). Iím hoping the system will get rid of that pesky detting and recoup lost HP from det-killing over-enrichment.

The aluminum bracket that mounts the blower to the intake manifold has cracked around one of the boltholes. When the smaller 9-lbs blower pulley had been installed, the cheap Dayco belt had to be tightened too much before it would stop slipping. Apparently the stress was too much for the bracket to bear. Weíre thinking of going stainless, or a better design for a bracket.

Next, Iím switching back to the 7-lbs pulley; use a Gates belt (grippy belt Ė less tension required) and convert to rear wheel drive for some dyno tuning.

Regards,
Ed.
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Old 10-30-2001, 10:16 PM   #23
Kevin Thomas
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Default Wow

Edekker,

I didn't know you were still fine tuning that beast. I thought you were quietly tearing up the tracks somewhere. Good luck!
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Old 10-30-2001, 11:57 PM   #24
ARG
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Unhappy I only have one problem......

...and that is that sometimes the engine stalls when I come to a complete stop. I've been trying to fix that problem for over two years. I'm sure it has to do with OBDII not being able to handle the extra fuel and supercharger drag.

I'm hoping that a piggy back ECU will help a little.

ARG
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Old 10-31-2001, 09:17 AM   #25
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What is the SE forum which was referred to above?
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