I have a 99 2.2L with 5spd. Looking at picking up a 95 2.2L auto. Is the rear end geared differently in the two?

If so, can I swap for the lower gearing to put in the 99? Or will this damage the Center diff?

your diffs must match. front and rear must be friends. so; if swap rear, must swap front. make sense?

Yes, makes sense.

Anyone know if they two are different? I am under the assumption that mine is the 3.something and the autos were 4.44.

your final drive ratio on your stock L is 3.9
any automatic Impreza L has a final drive of 4.11

the final drives must match up from the tranny to the rear diff. or center diff. meltdown :alien:

Derrick

Is the front diff from the auto the same as the front diff in the 5spd? Meaning can they be swapped?

subaru transmissions have the front and center diff's inside the transmission. when you swap transmissions, you are basically swapping everything besided the rear diff. in your situation, it sounds like you are wanting the 4.11 F/D ratio that the auto impreza has. to get this, you would have to get a new 5speed tranny, and the rear diff out of the auto impreza. a 4.11 F/D tranny can be found in any 2.5RS or a legacy GT.

Derrick

So, I couldn't dismantle the trannies to get the front Diff out?

im sure you could... somehow. if the auto bits were compatible, i suppose with enough effort it couldb e done. why not just save your pennies and get a whole gearbox?

Not looking to do it with lots of effort or money. I am getting the whole car for basically pennies. Runs and drives, just has body damage to rear end.

I was thinking this might be a cheaper alternative to RA gears with the low gearing for now.

probably take quite a bit of effort. part the car out and make some cash. then buy a 4.11 JDM gearbox :)

if you could, better explain what you are intending to do. by your statements so far, it sounds like you want to have the 4.11 F/D ratio in your 1999 5speed impreza. if you are wanting to do this, you would need to get a 5speed tranny from an RS or legacy gt (got mine for $500 shipped) and then swap in the rear diff from the auto impreza. thats it i think, the driveshaft from your 1999 should fit. tell me if im wrong about your intentions

Derrick

Goal was to swap 3.9 gearing in 5spd impreza L to 4.11 gearing of auto Impreza L. Then later swap in STi diffs.

Ultimately, I want to max out the gearing at about 120mph with a 5spd.I want this car quick without touching the motor. Then swapping motor lastly.

Now, I think I may just part out the donor car and take the money for something else.

if u want to max out at about 120mph (im assuming a 6,000 RPM pos NA motor),
you want the 94-95 WRX-RA (non Sti), 4.11 gearbox with crazy short gears. shortest geaerbox subaru ever made. i have the same gears with a 3.9 FD and its almost too short.
that gerabox would be the killer app for a no torque NA motor. just need some more rev's and u be flying

That is what Rallispec said too. So far the STi Ra Gears are $2500 installed in a tranny with core charge.

STi Diff run about a k a piece

Not exactly the prices I was looking to pay, but...

I figured with this set on a NA motor it would be quicker then most WRXs, possibly STis.

Then with the motor swap it would be ridiculously quick.

Anyone can go fast, it all depends who is the quickest.

That is what Rallispec said too. So far the STi Ra Gears are $2500 installed in a tranny with core charge.

STi Diff run about a k a piece

Not exactly the prices I was looking to pay, but...

I figured with this set on a NA motor it would be quicker then most WRXs, possibly STis.

Then with the motor swap it would be ridiculously quick.

Anyone can go fast, it all depends who is the quickest.

uuuhhhh, you will never be "quicker" than a wrx or sti if you put in shorter gears with the stock engine. all thats going to happen when you put in shorter gears with stock engine, is you will be shifting a lot more "quickly".

mechanical gearing is the BOMB.

rallispec is probably talking about the version 6 RA gears. those are LONG.

im talking about V2. CRAZY short. u want the entire gearbox one unit no assembly required. should cost you $1500 at most. ask gr8 wheels, or i might be able to find you one.

you want one of these:

TY752VB3DA
TY752VB3BA
TY752VB2CA

it makes the version 6 sti-ra with 4.44 look LONG.

the craziest of the crazy.

i have the TY752VB3EA box, 3.9 with same gear cluster and DCCD. dccd is niiice but will cost you $$$$.

screw the rallispec build own gearbox with fancy schmancy gears. cost you $4000 or somthing retarded after labor and u knwo how many guys have done it and had severe issues with things going kaboom?

get the whole box all at once. install. smile

my dohc 2.5 with the 3.9 crazy box can hold astraight line drag with a Sr20det S13. not faster, but really really close. its all in the gearing, makes acceleration insane.

3rd gear at 60mph was 6,000 RPM. u will shift lots.

mechanical gearing is the BOMB.

rallispec is probably talking about the version 6 RA gears. those are LONG.


I was thinking of JDM Parts Texas has them advertised new for $2500 complete tranny with RA Gears. Not sure which version though.

mechanical gearing is the BOMB.

im talking about V2. CRAZY short. u want the entire gearbox one unit no assembly required. should cost you $1500 at most. ask gr8 wheels, or i might be able to find you one.

you want one of these:

TY752VB3DA
TY752VB3BA
TY752VB2CA

it makes the version 6 sti-ra with 4.44 look LONG.

the craziest of the crazy.

i have the TY752VB3EA box, 3.9 with same gear cluster and DCCD. dccd is niiice but will cost you $$$$.

screw the rallispec build own gearbox with fancy schmancy gears. cost you $4000 or somthing retarded after labor and u knwo how many guys have done it and had severe issues with things going kaboom?

get the whole box all at once. install. smile

my dohc 2.5 with the 3.9 crazy box can hold astraight line drag with a Sr20det S13. not faster, but really really close. its all in the gearing, makes acceleration insane.

3rd gear at 60mph was 6,000 RPM. u will shift lots.

That is more what I was thinking. I will let you know more once the car is parted out.

yeah. the forrester XT gearbox is also a nice one. its inbetween the normal JDM WRX 4.11 and my 3.9 RA box. if u really want mecha tune for NA power though, you should only settle for the 4.11 WRX-RA non sti. its evil

i think the e-manage ultimate will let you kill the rev limiter too - dont quote me on it (original emanage does NOT). youll need more rev's with that crazy short of a gearbox, just so u dont have to shift to 3rd while autoXing

with my 3.9 RA and a dohc ej25, i was always in power. man, the gearing is so frekin spot on :P

From what I understand...

The gearbox that Rallispec sells is non synchro dogbox for rallying.

Are the other gearboxes the same?

I am sure that the Forester gearbox would not be.

Are they LSD diffs?



Then in conclusion...

I would want one of these gear boxes mated with a matching rear diff to go along with them.

are you sure a non-syncro complete dogbox is $2500 assembled in a case? if so, ill take 2 of them thats HELLA CRAZY CHEAP. liek ridiculous. a set of KAZZ gears alone is liek 3500. just hte gears, no diffs nada nada nothing.

the rear diff is its own business. if u do find a WRX-RA gearbox, you'll just need a reaer 4.11 - fit whatever diff you like in it.

OEM, all subaru has center LSD. very few 5 speed subaru's have front lsd stock. late model Version 5/6 RA do, and 6 speed gearboxes do.