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Old 08-10-2008, 10:17 PM   #1
Consense
Scooby Newbie
 
Member#: 183577
Join Date: Jun 2008
Chapter/Region: TXIC
Location: Texas
Vehicle:
1998 Legacy
White

Default Project: Puff the Magic Wagon

This post is just to get the cat out.
What I have got:
  • 1998 Legacy 2.5/auto with blown head gasket
  • 1996 JDM EJ20RD/ manual
  • Beer, time, and a friend willing to fund the project
What I need for this project to be a success:
  • Convert EJ20RD to single turbo
  • Swap EJ20RD/manual into Legacy
  • Build custom fuel injection system/wire harness with MEFI4B to operate it. Bet you have questions on this one. What the heck is a MEFI4B? What does it do?
  • Turn a N/A Legacy into something it should have been from the factory plus some.
Where am I at right now:
http://s525.photobucket.com/albums/c.../EJ20R%20Swap/

Parts I need to source:
  1. Clutch/brake pedal assembly with master cylinder that will bolt up if possible==> anyone with ideas on where I can find this?
  2. Turbo ==> bhp 350-375 hmmmm... will the EJ20 hold up?
  3. Turbo piping up and down==> after market with some fabrication parts
  4. Exhaust header ==> I am thinking of using Borla's header for the NA Legacy
  5. Injectors==> Stock yellow tops from EJ20R may be enough; anyone?
  6. Fuel pump==> Walbro of course
  7. Engine gaskets==> Interchangeability? Anyone?
  8. Water/meth==> Painless Performance part #65000. I designed it.
  9. Nitrous==> Got to have a little nitrous. Any pointers to where the nozzles work best on this engine?
  10. Other parts with less interesting details attached to them.
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Old 08-11-2008, 11:29 AM   #2
Jaxx
NASIOC Supporter
 
Member#: 177
Join Date: Aug 1999
Chapter/Region: NWIC
Location: Boise,Idaho,USA
Vehicle:
The 93 Imp W/EJ20K
flat black

Default

1 junk yard
2 no nor will the tranny
3 at least start with take offs, look in your local forum
4 no use take offs it won't hold the pressure
5 no 525cc at 3 bar
6 yup
7 external are the same as the ej205, internal are not
8 getting ahead of yourself- consider e85 instead
9 getting WAY way ahead of your self how many subys do you see running nos .. there is a reason
10 IC one again take offs ar a great place to start

mefi4b - motec m4?

i wold highly recommend running car before big power
walk , then run
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Old 08-11-2008, 06:56 PM   #3
Consense
Scooby Newbie
 
Member#: 183577
Join Date: Jun 2008
Chapter/Region: TXIC
Location: Texas
Vehicle:
1998 Legacy
White

Default

Jaxx,
Appreciate the reply with your opinions and the facts.
Let me ask a more direct question about the JDM EJ20R; At what bhp will these engines, with their stock long block, usually handle producing reliably?

I wasted 3 minutes today calling Borla about the header. No info about tubing wall thickness. Jaxx, have you seen someone use one of these headers and have it fail on a boosted Subaru engine?

"9 getting WAY way ahead of your self how many subys do you see running nos .. there is a reason"

Actually, I have seen a few running around the streets with nitrous. If there is a reason for what you said then please explain.

This isn't my first bbq; I've just never invited Subaru to the party.
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Old 08-12-2008, 12:12 PM   #4
Jaxx
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Member#: 177
Join Date: Aug 1999
Chapter/Region: NWIC
Location: Boise,Idaho,USA
Vehicle:
The 93 Imp W/EJ20K
flat black

Default

well what i can tell you is you should be able to find a set of take off wrx headders,catless uppipe,vf39,gutted stock DP for ~$400-500 and have it bolt up and make 330ish bhp (injectors will be the limiting factor, meth will help)

vs dealing with custom fabrication,a non stock turbo location and all the complexities of a standalone,

i guess i should restate .. 350 bhp-yes, 350whp, no.. my bad
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Old 08-16-2008, 10:52 PM   #5
scrappy doo
Scooby Specialist
 
Member#: 36215
Join Date: May 2003
Chapter/Region: SCIC
Location: orange, ca
Vehicle:
2002 impreza outback
dented to hell

Default

the borla headers hardly hold up on NA motors
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Old 08-26-2008, 08:20 PM   #6
Consense
Scooby Newbie
 
Member#: 183577
Join Date: Jun 2008
Chapter/Region: TXIC
Location: Texas
Vehicle:
1998 Legacy
White

Default

Was on vacation for the past few weekends but my project is still rolling along. I will post pics of the cleaned and painted parts soon. At this point I am acquiring parts needed to complete the swap.

One major component change has been the throttle body. The Subaru throttle body didn't have the IAC incorporated into it and the external IAC was something to be desired on how it operated. The MEFI4B ECM that will operate the fuel injection has a tendency to operate a 4 wire IAC more precisely so I have acquired a 4.0L Jeep engine throttle body with such an IAC built in. After a very simple hole enlargement to the mounting bolt holes it will bolt right up the Subaru intake. Amazing, but the throttle blade diameters are almost identical.

I have identified an Aeromotive fuel pressure regulator with boost bias that should do the trick once I eliminate the factory regulator from the fuel rail. This also allows for fuel rail pressure changes during the tuning process... if need be.

The clutch and flywheel will be Centerforce since every other vehicle I have built I have used their clutches and I firmly believe that they are the best.

As for the exhaust header I was thinking of having the Borla header coated internally in order to increase its tolerance to heat. Has anyone here done this? What were the results and who did you have coat the header?
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