alright, first off, I'm trying to be pretty vague on some of the subaru forums, so if you happen to see a discussion about my car elsewhere, don't mention it. There are some pretty awesome guys here, and I'm itching to brag......so there'll be more details here than anywhere else on the internet

for the record, here's my car:

(click the picture for full mod list, more pics, and videos)

short version: there's less on this car that's orignal, than what's been swapped. (original parts: rear seat, carpet, dash, gas tank, master cylinder, doors, glass, steering column/wheel, hatch, rear bumper, one headlight, mirrors).

engine is almost entirely stock (cone filter and exhaust....) out of a 1992 subaru legacy. 2.2l MPFI and electronic ignition.


as you might have guessed, I'm itching for more power. got the suspension and brakes dialed in pretty close to how I want them....but want just a little more ooomph.

so, based on some of the stuff pioneered by this guy (careful, it's a 4-year long build, it's an extremely long thread.....). I'm going to throw some belt-driven boost into the equation. now, that particular character has a much larger thirst for power, so, he's run nitrous, and twin chargers, and blown up a couple dozen motors. but I intend to stay on a stock pulley, which would yield a max of about 5psi. with full standalone engine management....

his original setup:


he's now twin charged (super AND turbo chargers) running something like 25+ psi of boost and 300+awhp.


SO. my setup. I'm working on getting my hands on a new motor (mine has 275k miles on it, and I want very little down-time). it will receive new headgaskets, seals, pumps, etc. as well as phenolic intake manifold spacers from grimmspeed.com (I did the wiring on their WRX-swapped race car), delta cams, etc.

but still planning on using a 2.2l N/A motor, leaving it at stock N/A compression (9.5:1). hopefully a '95, so it won't have hydraulic lash adjusters, but will still have dual-port exhaust.

I bought an Eaton M62 supercharger on ebay earlier this week. This is the same blower pictured above. and in mercedes trim (came off a CLK 230) has an electromagnetic clutch in the pulley very much like an A/C compressor. this means, that when the clutch is off, there is almost zero drag on then engine (no parasitic loss) and the screws can free spin, so no need for a by-pass valve.

I also purchased a voltage switch, to allow me to activate the pulley based on TPS voltage....probably at ~75% throttle.

I've also acquired a Link Lem v4 standlone ECU system. so I will have complete tunability.

The engine will be running turbo-legacy injectors (380 cc/min IIRC), so I won't have to worry about running out of fuel.

I'm also looking at Air-Water intercooler setups from http://www.frozenboost.com. this way I can minimize pressure drop, minimize intake piping, and still get efficient cooling. I'll probably run this model:



hoping to have the new setup installed and running in 6 months....

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Subaru wiring: NumbchuxConversions

Impressive,,,I like your thinking. I toyed with the idea of a supercharger myself but I was just too intimadated. keep up the pics on you build progress.

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If your clutch ain't slippin,, you probably got it adjusted right!!!!!

I have been looking at superchargers off a thunderbird. I have one off a detroit diesel but was wondering about the comp mods. what has to be done to run it on a 2.2?

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"YOU CAN MAKE THINGS HAPPEN, WATCH THINGS HAPPEN OR WONDER WHAT THE F$$K HAPPEND...WE'RE MAKING THINGS HAPPEN" The strong words of Captain Phil! Rest in peice!

the most difficult part of it is physically mounting the charger itself. it helps that the mercedes uses a 6-rib serpentine belt just like the subaru, so it's just a matter of finding a ridiculously long one....

then it's just a matter of fabbing the intake tubing, and adding extra fuel, but that stuff is true of any forced induction build.

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Subaru wiring: NumbchuxConversions

My thoughts were to weld a plate directly to the intake in the middle of the spider. The ford or gm supercharger have the throttle body before them. Its just a matter of adapting the subaru throttle body. I need to know how to put more fuel in. can you help with this end of built? I plan to set it up for 4-5 psi boost.

_________________
"YOU CAN MAKE THINGS HAPPEN, WATCH THINGS HAPPEN OR WONDER WHAT THE F$$K HAPPEND...WE'RE MAKING THINGS HAPPEN" The strong words of Captain Phil! Rest in peice!

I am thinking you will need an ECU out of a WRX or GT that has Boost timing retard and Boost pressure input. Granted the MAF will give you some inrichment however I dont think it will be enough. The O2 senor is a narrow band and its only going to help a little.

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Water cooled Dry Sumped Subaru Powered Turbo Charged Fuel Injected 2500CC Tank. Oh Rah! He who dies with the most Toys not only wins, He also wears them out!

_________________
**********"A fear of weapons is a sign of retarded sexual and emotional maturity."
- Sigmund Freud **********
**********"The problem is not the availability of guns, it is the availability of morons."
- Antonio Meloni **********

I tried an ECU from a ej22T on my buggy just to see if it would even idle and it wouldn't even run. FWIW

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If your clutch ain't slippin,, you probably got it adjusted right!!!!!

well, I have to go to work in a couple minutes....so I'll write more later.

but, the stock, N/A EJ22 ECUs are plenty smart enough to enrich the mixture up to about 6-7 psi, at which point you really need timing control. and at about 8 psi you'll max out the injectors.

also, the EJ22t ECU only needs 2 or 3 wires switched around to run on an N/A harness/engine. this is another option.

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Subaru wiring: NumbchuxConversions

alright....some more info.

I confirmed on my pinouts. all that's needed to run an EJ22t ECU on an OBD I EJ22 harness is swap the 3 wires for the crank and cam angle sensors. (power, ground and signal are same respectively). BUT, the EJ22t uses different injectors, so make sure you swap the injectors (rails too....different injector design) too.


other options. if under ~8psi of boost, timing control isn't really necessary. so you could use a piggyback like the GReddy E-manage Ultimage (EMU for short), or the RalliTek SMT Perfect Power 6 (PP6). both of these modify signals to and from the stock ECU to allow for more fuel (they both have timing capabilities, in theory. but once you start messing with the Crank/Cam signals, the ECU realizes something isn't right, and shuts off entirely.....not cool).

Also, a Rising Rate Fuel Pressure Regulator (rrfpr) could be used to up the fuel pressure while under boost so more fuel is forced through the injectors.

another way is to plug 22t injectors while still using an n/a 2.2 ECU. same effect as the rrfpr. kind of a band-aid, but it works.



but in all reality, I know a few guys that have run ~5psi with relatively good reliability with the stock 22 ECU.

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Subaru wiring: NumbchuxConversions

Your suby looks bad a$$. The information is awsome input that will be used on my car. I see the supercharger in the pic has a cluth, why? Does it allow air tto pass when not activated? It would be awsome to be a ble to activate when playing and have reliable low end without the extra power. Thanks numbchux, the suby world thanks ya!

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"YOU CAN MAKE THINGS HAPPEN, WATCH THINGS HAPPEN OR WONDER WHAT THE F$$K HAPPEND...WE'RE MAKING THINGS HAPPEN" The strong words of Captain Phil! Rest in peice!

yep, the Eaton M62s used on mercedes Kompressors (clk230 etc.) have an electromagnetic clutch in them, so you can turn it off, and entirely eliminate parasitic loss! and since they were designed to run the 2.3l motor in the mercedes, they're perfect for a subaru 2.2

disadvantage is, because of the clutch, you can't change pulley size on the blower. and the merc used a stepper pulley to increase rpms at the blower. only realistic way to do this on a subaru is use a larger crank pulley. so stock pulleys puts it quite a bit under peak efficiency....but will still yield ~5psi, which is plenty for now.

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Subaru wiring: NumbchuxConversions

ECU:


blower:


I rotated the high-pressure manifold on it 90 degrees, and marked a line on it where I'll cut it off, and weld a plate over it to only use the rear-facing output.

from the back:


again, line marked where I'll cut it off. a 3.5" coupler will fit perfectly there, so no more fabbing require on that side.

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Subaru wiring: NumbchuxConversions

Looks like a nice project.

_________________
Water cooled Dry Sumped Subaru Powered Turbo Charged Fuel Injected 2500CC Tank. Oh Rah! He who dies with the most Toys not only wins, He also wears them out!

_________________
**********"A fear of weapons is a sign of retarded sexual and emotional maturity."
- Sigmund Freud **********
**********"The problem is not the availability of guns, it is the availability of morons."
- Antonio Meloni **********

I wish I had a shop so I didn't have to use my living room

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Subaru wiring: NumbchuxConversions

Now Thast Fuuuuuuny!

_________________
Water cooled Dry Sumped Subaru Powered Turbo Charged Fuel Injected 2500CC Tank. Oh Rah! He who dies with the most Toys not only wins, He also wears them out!

_________________
**********"A fear of weapons is a sign of retarded sexual and emotional maturity."
- Sigmund Freud **********
**********"The problem is not the availability of guns, it is the availability of morons."
- Antonio Meloni **********

Not this mod cop. As long as you guys pull over and let me by on the trail, we won't have any problems.

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It's amazing what you can accomplish when you don't care who gets the credit.-
Harry S. Truman

_________________
**********"A fear of weapons is a sign of retarded sexual and emotional maturity."
- Sigmund Freud **********
**********"The problem is not the availability of guns, it is the availability of morons."
- Antonio Meloni **********