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Old 08-19-2007, 11:02 PM   #1
B2.5GT
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Default 04 WRX 5 Speed Transmission Swap To 98 Legacy GT 4EAT

HI everyone I have here my 1998 Legacy GT Limited Edition Subaru and I'm on a proceses of finishing my manual swap but the only thing I'm stuck now is that the drive shaft that I got with the 04 wrx is too short by few inches, my orginal driveshaft is short buy 1.5 inches or so. I researched and didn't find anything so now I'm looking for help in which drive shaft I should use so it will fit from the rear WRX diff. to the back of wrx transmission, Thanks for anyhelp.....
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Old 08-20-2007, 07:02 AM   #2
brandoncrone
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I have a legacy and a legacy OBW driveshaft. Give me your total length on you drive shaft and I can check and see if these ones are longer. Where abouts are you? Is your old transmission any good?
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Old 08-20-2007, 09:24 AM   #3
xcntrk75
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The Legacy chassis is longer then the Impreza. You'll need a 5MT shaft from the same MY Legacy/OB (not too hard to find).
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Old 08-21-2007, 12:25 AM   #4
B2.5GT
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My drive shaft came out of my car that is about 62 inches or so and I need 63 and half inches or from one end to another end. RalliTek told me I need drive shaft from a Legacy that's from manual transmission. I'm trying to get one hear by Wesnday from Fastor Auto Parts but's so expensive 150 dollars. Hope it works. Another Question I had was if the pcm pin I need to ground was 81 or 82. Also I'm located in Portland Oregon. Thanks for the help everyone.....

Last edited by B2.5GT; 08-21-2007 at 09:46 AM.
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Old 08-21-2007, 10:10 AM   #5
morrocco88
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Location: Eastern WA
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97' LGT 2.3 Dstroke
Rotated BW S256 6speed

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Hi there, I'm just finishing the 5mt swap into my 97 legacy. The pin you need to ground is #81, but on the auto cars, there is no wire there, just an empty slot in the plug. I had to remove a wire from pin 79 (79, 80 & 47 are used to talk to theTCU which you don't need anymore) and plug it into slot 81. I then soldered that to a power supply ground on the same harness, but I forget which pin that was right at the moment. This will groung that 81 and the ECU will now think it is a 5mt ECU. After scanning for trouble codes, the code it was throwing was now gone, no check engine light!!!

Rallitek rocks by the way! Sean totally hooked me up with the turbo setup I'm running right now and tuned it with the Perfect Power 6. It runs awesome! Good luck with the rest of your swap, and PM me if you haave any other questions.
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Old 08-22-2007, 09:27 AM   #6
B2.5GT
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Thanks for the info morrocco88, I'll find out if I got the right driveshaft today.
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Old 08-23-2007, 01:49 AM   #7
B2.5GT
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Just finished putting my car back together and man it feels so nice to drive 5 speed manual subaru. Hey has anyone had ABS light on when doing 5 speed swap, just wondering because mine came on right away.... Thanks
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Old 08-23-2007, 12:59 PM   #8
Huffer
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Quote:
Originally Posted by B2.5GT View Post
Just finished putting my car back together and man it feels so nice to drive 5 speed manual subaru. Hey has anyone had ABS light on when doing 5 speed swap, just wondering because mine came on right away.... Thanks
xcntrk75 had that light come on, because the ABS control unit is hooked into the AT TCU. I believe he just hooked the AT TCU back into the harness, but he eventually found a more permanent fix.
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Old 08-24-2007, 01:05 PM   #9
B2.5GT
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I'll try that but I had two codes one 44 ABS control Non Cotrolled Latest and another Code 56 G sensor Signal Stick (Old) that's of the OEM scan tools. I also have MIL on p1101 Neutral position Switch Circuit Malfunction for MT which is not wired up I guess I should wire up that switch so I can DEQ in two years, lol. Thanks for the info...
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Old 08-25-2007, 11:59 PM   #10
ten80
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on my swap, I cut out the AT ECU, swapped the ABS ECU on the ABS unit for that off a MT car (the ABS ECU's are different for AT vs MT), and wired the car like it was MT. I can't remember what I did with the neutral position switch, but I suspect I wired it into the brake pedal sensor. Everything worked perfectly.
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Old 08-27-2007, 11:45 PM   #11
B2.5GT
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I fixed the nuetral position switch and now the check engine is not coming on. But I'll keep diging for the answer in fixing the ABS lights. I'll look up the differents in wiring for the manual ABS unit, thanks for the help
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Old 09-01-2007, 03:32 PM   #12
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Anybody have a diagram in differences of ABS module from Automatic transmission to Manual transmission I can't figure out the difference of auto to manual ABS module they look the same, any help will be appreciated. The only thing I can see is that ABS module have a wire that goes to the TCM module and it's blue/white wire pin C5 at B56 connector and the TCM I tried to give 12volts and ABS light is still on but after driving, I tried to put a resistor and that didn't help. I know there is a defferent part number if you try to order ABS module for auto or manual. So if anyone fixed there ABS light let me know how or I need a digram that has differents of manual to automotic ABS module, thanks
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Old 09-05-2007, 06:46 PM   #13
fastenova
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Not your usual 1997
Legacy GT

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Here's how I fixed it. I plugged the TCU back in, but only the outer 2 connectors (not the smaller middle one). This made ABS work properly - I even tested it!

The issue with hooking up that middle connector is that it caused the idle on my car to go way up (~1500 RPM).

Good luck!
Aaron
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Old 09-07-2007, 12:03 AM   #14
B2.5GT
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Thanks I'll try that, sounds easy enough.
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Old 09-09-2007, 01:43 AM   #15
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Thanks fastenova that worked great, why I didn't think of that earlier, I will still need to fix my cruise but that shouldn't be hard. All I need to do is wire the nutral safty switch to the two wire in the center consoul. Thanks again and hope this will help someone else fixing there ABS code.
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Old 08-28-2012, 11:32 PM   #16
MEEPERS
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98 Legacy Outback
Murder wagon

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Just wanted to say thanks for the fantastic info provided in this post. Swapped my 4eat for an 03 Rex 5 speed in a weekend. Everything works perfect.

Pull out slush box
Install 5 speed and matching diff
Install pedals and clutch master
Pin 81 to ground (this drove me nuts coming from a Honda background as Subi goes off the plug, not the ecu)
Unplug center tcu plug
Wire backup light
Wire neutral switch to clutch pedal upper switch.
New fluids and drive
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