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Old 10-26-2009, 11:21 AM   #1
MMWRX
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1995 4Runner 4x4 5spd V6

Default Impressions: 2002 WRX Going from 3.90 to 4.44 gears.

First of all this was promised to a few people on TXIC therefore it is being posted here, if this needs to move to Drivetrains please feel free to do so.

This weekend I completed a full drivetrain swap (trans, rear, axles, ds) from the 02 factory 5mt w/ 3.90 final drive to a 04 FXT 5mt w/ 4.44 final drive. In short there is an amazing difference, I never took my car to the track or dyno before and therefore have no numbers to compare it to but the overall butt-dyno and driving impression is a night and day difference.

--Acceleration: The improvement in off-the-line and moving acceleration is phonominal, the car feels like a totaly different animal as a comparison, then: (stage 2 bugeye vs. 04 mustang GT w/ headers/exhaust - head to head give or take 1/2 a length) now: (stage 2 bugeye with 4.44s vs same 04 mustang GT - GT will be looking at my tails as I pull away) absolutely amazing.

-- Driveabiltiy: The car is alot easier to drive in traffic with the new gears. I installed a lightweight flywheel on the car when I bought it 2 years ago and since then have had slight issues with driving the car in low gear at low speed/RPM (the car would buck as there was not enough inertia being concerved in the flywheel due to the low weight). These gears make the car drive much better, I can now creep along at 5 mph in 1st slightly on the gas and not feel like I'm riding a rodeo bull. Overall much nicer around town.

-- Highway: The car performs ridiculously on the highway, In fifth it will go from 60 to 100+ in a matter of seconds, it feels much more responsive and powerful. The WRX should have been built with these gears, the only downside is that at high speeds you run out of gear fairly fast and high speed cruising = much higher sustained RPMs. Basically if this trans had a 6th gear I would say that this was the best setup in the world. The upside to high RPM cruising is the fact that you can realistically stay out of boost in 5th at highway speeds and still be able to pass people and make quick adjustments to your speed and emergency maneuvers with ease.

-- Conclusion: I haven't gotten on it on the highway neither have I had the opportunity to drive long disctance at highway speeds but all in all I am very happy with how the car turned out and will update this thread once I have had some more drivetime. Once again, I will continue to update once I've had a chance to do long distance, offroad, and any other kind of driving not yet mentioned.

Thanks for reading,
Anton.


11/09/09 update: I did a few launches and a 0-150-0 in the WRX this weekend and HOLY ****!!!! 8O the car got to 150 faster then it went back down to 0. I am taking the car to the track sometime within the next month but I should trap over 100mph the car is an off the line monster, With a perfect launch it will spin all 4, 2-3 revolutions and then tear ass like a raped ape on cocaine. As for the 0-150-0 it took a little under a mile total. Keep in mind though that I kept it at 150 for a little bit to enjoy the adrenaline and then slowed back down which took forever with stock brakes.
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Last edited by MMWRX; 11-09-2009 at 03:05 PM. Reason: Updates
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Old 10-26-2009, 11:33 AM   #2
blakkboxer
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cool!!
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Old 10-26-2009, 11:37 AM   #3
WassonA
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Quote:
Originally Posted by MMWRX View Post
-- Driveabiltiy: The car is alot easier to drive in traffic with the new gears. I installed a lightweight flywheel on the car when I bought it 2 years ago and since then have had slight issues with driving the car in low gear at low speed/RPM (the car would buck as there was not enough inertia being concerved in the flywheel due to the low weight). These gears make the car drive much better, I can now creep along at 5 mph in 1st slightly on the gas and not feel like I'm riding a rodeo bull. Overall much nicer around town.
Good enough reason for me to change.
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Old 10-26-2009, 11:39 AM   #4
03WRXSUBI
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Awesome seems like a cheaper upgrade for the bugeye's
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Old 10-26-2009, 11:44 AM   #5
Josias
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Approved!
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Old 10-26-2009, 11:57 AM   #6
GlennB
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What was the total cost on this and how much stronger is the fxt tranny compared to the stock bugeye?
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Old 10-26-2009, 12:08 PM   #7
MMWRX
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Originally Posted by GlennB View Post
What was the total cost on this and how much stronger is the fxt tranny compared to the stock bugeye?

I got a steal of a deal so it cost much less then it should have I don't want to put it out there for multiple reasons but if you want to know specifics you can pm me. As far as I have seen/heard/read, the FXT trans is stronger A) due to higher ratio: there is less shear force applied to the gears, B) they are the newer style wider gears that the 04+ WRXs got so that alone makes them stronger than the 02-03 gears.

P.S. I didn't do this as a mod but rather as a repair, I blew my trans 2 weeks ago and just needed to get the car back on the road. it just so happened that Geoff was selling this at the same time I needed it.
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Old 10-26-2009, 12:11 PM   #8
Geoff
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Told ya, Anton. These gears with 4.44 final drive are going to be stronger than RA gears at the factory 3.90. This is the transmission that Subaru SHOULD have put into the 2.0l cars. It addresses a lot of the shortcomings of the 2.0l. It's an alright tranny for the 2.5l, but not nearly as good as it is with the 2.0l motors. Thing is, they're rare to come across...not a whole lot of Forester to STi 6-speed swaps going on BEFORE the Forester owner built up enough power to trash the old tranny. That, and the '04/'05 FXT trannies are superior to the later ones - better gearing.
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Old 10-26-2009, 12:12 PM   #9
MMWRX
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Yeah man NIGHT and DAY! I love these gears, thanks again Geoff.
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Old 10-26-2009, 12:39 PM   #10
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Thanks go out to Mario and Amir at Gillman SW for letting me keep the tranny there until you picked it up (and doing my swap!) - A drive to Cypress to pick it up would've sucked for you. Keep us posted on how it does on the highway for you.
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Old 10-26-2009, 02:33 PM   #11
blakkboxer
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hey op, how much for the whole drivetrain? like 1.5k less than sti??
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Old 10-26-2009, 02:43 PM   #12
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You'll hate it if you ever do the TX Mile. Figure about 160mph tops and that's if you use a taller tire like the FXT has. I was hitting 5th gear at the 3/8 mile mark.
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Old 10-26-2009, 02:50 PM   #13
MMWRX
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Originally Posted by The Head View Post
You'll hate it if you ever do the TX Mile. Figure about 160mph tops and that's if you use a taller tire like the FXT has. I was hitting 5th gear at the 3/8 mile mark.

That's why I'm building a TT 300ZX, the WRX is my designated DD/beach & offroad fun vehicle, I can't imagine ever wanting to go that fast in it again

P.S. Have you ever run the Cayenne?

Last edited by MMWRX; 10-26-2009 at 03:00 PM.
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Old 10-26-2009, 03:06 PM   #14
Geoff
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Gillman still has my set of '07 FSXT springs, if you want more clearance for doing the offroad thing.
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Old 10-26-2009, 03:08 PM   #15
Geoff
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Originally Posted by The Head View Post
You'll hate it if you ever do the TX Mile. Figure about 160mph tops and that's if you use a taller tire like the FXT has. I was hitting 5th gear at the 3/8 mile mark.
C'mon, Eric...not everyone lives life one Texas Mile at a time.
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Old 10-26-2009, 03:10 PM   #16
MMWRX
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Originally Posted by Geoff View Post
Gillman still has my set of '07 FSXT springs, if you want more clearance for doing the offroad thing.
How much higher will I go on them and will they fit my stock struts?
No bull**** I have been looking for a way to raise the WRX a little more, I have also been researching car sized all-terrains.
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Old 10-26-2009, 03:22 PM   #17
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*paging distorto*

He just did an FXT suspension swap into his WRX.
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Old 10-26-2009, 03:56 PM   #18
MMWRX
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Just a bit off-topic but I just found out that I won passes to SEMA. But sadly I don't think I will be able to go.
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Old 10-26-2009, 04:06 PM   #19
inoneday
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uh ohhhhhhhh^
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Old 10-26-2009, 04:55 PM   #20
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Haven't run the Cayenne yet. I'm probably going to try the bike again in March with some minor changes. I'd like to hit 200 with it (195 last time out).
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Old 10-26-2009, 05:04 PM   #21
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A good 2" or so. The springs are still at Gillman if you want 'em...and yes, they'll fit stock struts....call Amir and have him ask Mario where he put 'em.

Quote:
Originally Posted by MMWRX View Post
How much higher will I go on them and will they fit my stock struts?
No bull**** I have been looking for a way to raise the WRX a little more, I have also been researching car sized all-terrains.
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Old 10-26-2009, 05:05 PM   #22
MMWRX
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Originally Posted by The Head View Post
Haven't run the Cayenne yet. I'm probably going to try the bike again in March with some minor changes. I'd like to hit 200 with it (195 last time out).

2 wheels is a bit too dangerous for me. I'll stick to 4 but that must feel ridiculous 195mph, open air.
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Old 10-26-2009, 05:06 PM   #23
MMWRX
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Originally Posted by Geoff View Post
A good 2" or so. The springs are still at Gillman if you want 'em...and yes, they'll fit stock struts....call Amir and have him ask Mario where he put 'em.

Cool, thanks man, will do.
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Old 10-28-2009, 10:53 AM   #24
MMWRX
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Updates, read post #1
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Old 11-09-2009, 03:05 PM   #25
MMWRX
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Updates 11/09/2009
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