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Old 06-08-2003, 11:41 PM   #1
scobaru
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Default FWD to AWD converison parts list

I'm sure that this topic has been beaten to death but one thing I notice is there isn't always a clear list of what all is needed as far as I know from what other post say this is what the list consist of
AWD tranny
AWD hubs
AWD knucks
driveshaft and half shafts in all 4
rear diff
rear cross member
I think Front AWD crossmember I could be wrong
Shifter linkage
some needed gas tanks from an AWD

is this the complete list? anything missing?
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Old 06-09-2003, 03:11 AM   #2
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Default extra parts

also, be sure to find all crossmembers for the tranny & prop shaft, along with rear swaybar. (fwd have'nt one) and miscellaneous bolts. add also e-brake cables. some have claimed that wrx cables work w/ a little adjustment.

what i would really like to know is if the rear subframe from an 02 sedan or wagon is interchangeable w/ old gc/gf8 shells. if not, then are early legacy and gc subframes the only selection pool? it'd be easier to source all the parts from one donor rather than two or three, which is why i ask. tony

answer to my own question: i guess not.
http://forums.nasioc.com/forums/show...ar+crossmember

Last edited by tbd; 06-09-2003 at 04:48 AM.
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Old 06-09-2003, 11:36 AM   #3
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AWD tranny
AWD hubs
AWD knucks
driveshaft
half shafts all 4
rear diff
rear cross member
Front AWD crossmember i don't think so
Shifter linkage
gas tank yes
rear struts


is the exaust differnt?
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Old 06-09-2003, 11:41 AM   #4
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exhaust is the same. you also need the arms for the rear suspension that the drop links come off of for the sway bar.

Brent
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Old 06-09-2003, 02:40 PM   #5
scobaru
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well u can get an aftermarket sway bar but what about the arm?
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Old 06-09-2003, 03:03 PM   #6
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they are the lateral arms. u can probably find STi ones or some other aftermarket product.

Brent
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Old 06-09-2003, 04:42 PM   #7
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Quote:
Originally posted by scoobyimprza
exhaust is the same. you also need the arms for the rear suspension that the drop links come off of for the sway bar.

Brent
Your mileage may vary, but my FWD exhaust would not clear the LR axle. I had a muffler shop weld in an extra bend because I'm too cheap to buy a new exhaust.

Josh
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Old 06-09-2003, 04:45 PM   #8
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would the 94 shifter linkage from a fwd work with the AWD tranny from the same year?
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Old 06-09-2003, 05:04 PM   #9
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I have 3 axles from my RS with 20k on them and 1 with under 2k.
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Old 06-09-2003, 11:19 PM   #10
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do I need front hub and knuckles?
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Old 06-10-2003, 01:14 AM   #11
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Quote:
Originally posted by beachbum


Your mileage may vary, but my FWD exhaust would not clear the LR axle. I had a muffler shop weld in an extra bend because I'm too cheap to buy a new exhaust.

Josh
good call with the axle and exhaust, i didnt think of that
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Old 06-21-2003, 05:39 AM   #12
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Default old front hubs/knuckles ok 4 brakes

unless you have a bad bearing, the front end is fine as far as brakes go, not sure about new axles. wrx brakes bolt up just fine as would stoptechs. dust-shields different though, but who cares. the only change to keep in mind would be brake lines. if you go ss, the kits are differenc for gc's an gd's. not sure if its connectors or length. btw, if you get wrx brakes aim for 02 not 03. the 03's have a limited pad selection. tony

btw. my fwd exhaust wont clear the axle either, but this may not be the case for all cars given the parts bin cobbling. eg: i think my car has an awd fuel tank??? as well as the robust pitch link bushing.

Last edited by tbd; 06-25-2003 at 04:52 AM.
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Old 06-26-2003, 06:45 AM   #13
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Default awd tank already on some.

confirmed, both my 95 L's already have awd fuel tanks. the rear diff, and and diff carrier slotted right in. my tank however is the smaller 13.2 gal. 2k+ rs and legs have 15.9. i believe if you want to check if you already have one, check the center rear of the tank and look for four round bolt head indents (size of a dime?) arranged in the shape of a rectangle. this is where the diff carrier bolts meet the tank's outer protective shell. they don't bolt into the tank, just bulge out of the carrier thus indents are for clearance. it'll be near where the front of the diff housing would be. (ankle end of the drumstick shape) my tank had a deeper passenger side than driver's side.

one more optional part to consider, if you pull an awd axle back exhaust, you might want the heat shield over rear the end of the mid-pipe. my fwd heatshield would've interfered w/ propshaft. awd's looks like the same but cut in half lentgh-wise.

ironically this flimsy piece gave me so much trouble installing that i tossed it.

tony
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Old 06-26-2003, 03:31 PM   #14
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well I've looked under mine and I'm not suree what to all look for but I do know I have the 13.2 gal tank maybe if there was pictures I would know what to look for?
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Old 06-26-2003, 03:56 PM   #15
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I have some pictures of the two gas tanks (what I used, in any case). Let me find them, upload to my site, then I'll post again w/pics.

Josh
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Old 06-26-2003, 04:05 PM   #16
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Ok, that didn't take as long as I thought it would. Here are a few pics I have. As always, your mileage may vary, etc... These pictures were taken from the back of the car.

Old, FWD tank:


New, AWD tank:


What it took to get there:
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Old 06-26-2003, 10:47 PM   #17
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Default tanks?

that's funny mine don't look like either of those. the top of course is a fwd. it looks big. how many gallons? the lower is an awd 15.9gal. the 13.2 gal awd looks like the lower one but its driver's side is shallower. the imprtant part is that the centerline have roughly a 6" deep clearance, like an upside down valley where a driveshaft could go. that valley between the two support straps is where you'll find four bolt-head indents on an awd 13.2. you'll need a flashlight and some crawlspace as the exhaust may block your view. the fwd cars rear x-member also blocks u.

tony
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Old 09-29-2003, 04:25 AM   #18
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Default conv. parts list

also, if u are swapping to a turbo syle trans u'll need the whole hydro pedalbox setup.

http://forums.nasioc.com/forums/show...hreadid=425042

check my post on FWD--> AWD swap
what trans / clutch setup are u going to use?


what went in:

94 WRX-STI 4.11 turbo trans, hydro pull style clutch,
GDA USDM WRX exedy clutch and light flywheel,
springs and clips and misc hardware from 94 legacy turbo
97 JDM 4.11 rear LSD diff, axels,
94 JDM driveshaft,
02-03 USDM GDA sti transmission mount,
94 JDM trans H-member(centre/front brace)
01 RS trans h-member rear brace
94 JDM WRX-STI shift linkage
99 USDM 2.5 RS hydro pedalbox, modifitted JDM Clutch MC (shaft should be shortened 2.25 inches) with silly RHD heat shield
stainless steel custom clutch line (fabbed locally)
95 impreza L AWD diff x-member and braces/brackets
1 front axel from 96 legacy 2.2L
1 front axel from JDM 94 WRX

parts already in the car from previous AWD rear end conversion:

98 outback hubs, rear x-member, lateral links, sway bar install
96 impreza outback e-brake cables,
94 impreza AWD gas tank,
whiteline endlinks, frame mount pads
20mm STI rear sway bar
STI v6 struts/springs
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Old 09-29-2003, 07:14 PM   #19
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welcome to post whore anonymous supermoose
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Old 09-29-2003, 11:37 PM   #20
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Does anyone have a FWD & AWD gas tank side-by-side? Im curious of what it looks like.. looking at my Fwd impreza you would need a Awd tank.

Nevermind I see that was posted LOL I need to open my eyes abit more.
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Old 09-29-2003, 11:39 PM   #21
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umm the above post shows a fwd and awd gas tank
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Old 09-29-2003, 11:49 PM   #22
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I don't know what year this thing is.. But I just looked at another post and I almost forgot about this..

"remember the L has a mechanical speedo coming straight from the tranny. The RS doesn't.
That would be a decent sized problem."

So what happens when you swap to an AWD Tranny? And what year did they go to the electronic speedo?
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Old 09-29-2003, 11:52 PM   #23
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my best guess would be when they switch to the newier or different style gauge cluster witch was in 98 or 99 my tranny was from a 94 and my car is a 94 so everything worked out
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Old 09-30-2003, 12:07 AM   #24
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Have a Nice Day? narg

im not a whor.

dunno about the mech-->elec speedo conv. ideally ud be putting in somting the same kinda year for max compatibility, but newer is always better for the most part. u could swap to the whole electronics if u had a full clip/motor. its cheaper in the long run anway. narg

ask the guys at PDM turbos in denver. ona the guys there is good with electronics who makes their chip thingy, he did somthing involving guage cluster update conversion

h
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Old 09-30-2003, 02:21 AM   #25
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The mechanical transmitter goes in place of the electronic sensor.
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