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Old 12-09-2012, 02:07 AM   #26
thorne
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I would love to convert mine to a TH350/400 and a r200 so I can drag race my 97 wagon. Those trans can be head cheap and built cheap.


I can't find anyone who will make the adapater plate for me.
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Old 12-09-2012, 12:43 PM   #27
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Quote:
Originally Posted by jasoncanseeoh View Post
^DOPEEE!!!!

Quick question though, why would he make adapters for W series toyota trannys? I heard those are super weak. Especially the W58. I know that 2jz motors come with w58's I believe and everyone I know tosses those out and swaps for a r154 trannys because they're much stronger.
Offroad buggies. IIRC the guy was into sandrails.

Quote:
Originally Posted by thorne View Post
I would love to convert mine to a TH350/400 and a r200 so I can drag race my 97 wagon. Those trans can be head cheap and built cheap.


I can't find anyone who will make the adapater plate for me.
There is a guy in Oregon IIRC that put a TH350 into his sonic yellow wagon, runs a shop (I forget the name of) do a search for Bobby and RWD.
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Old 12-11-2012, 10:29 AM   #28
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i like the idea of moving the engine farther back. utilizing a custom tubular crossmember would prevent having to use an oil sump, but also keep in mind the steering rack and assembly is also another obstacle. also this would change transmission mounting which may or may not be a stock item, and would be mounted custom also. moving the engine/trans would move the turbo to in front of the engine (in my mind) to gain the most movement.

battery and other accesories of course are relocated and/or done away with.

the transmission housing mods have been done a lot. i have seen hack jobs in the garage that don't work right or professionally done the right way. the best method i have seen to make these housing is forging them. contacting a local foundry may allow anyone to do this. another method could be a machine shop machining a piece down from suby engine to trans of choice. i have never seen the second option but i have confidence it would work but as far as costs are both are probably expensive.
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Old 12-24-2012, 04:37 PM   #29
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Quote:
Originally Posted by Hondaslayer View Post
Offroad buggies. IIRC the guy was into sandrails.



There is a guy in Oregon IIRC that put a TH350 into his sonic yellow wagon, runs a shop (I forget the name of) do a search for Bobby and RWD.

He works at PRE!
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Old 01-05-2013, 08:21 PM   #30
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looks awesome
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Old 01-05-2013, 11:51 PM   #31
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I am thinking of converting my 2002 2.5rs impreza to RWD but PPG only makes the RWD spool for the wrx and Sti and I can't get a straight answer about the ppg spool fitting into my 2.5rs 5speed trans so my question is can the stock diff be removed and welded or is the ppg spool mandatory. also will my speedo still work after converting to rwd? I daily drive my car and would also like to know if doing the RWD swap is going to make my car unreliable for daily use?
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Old 01-06-2013, 12:32 AM   #32
jasoncanseeoh
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Andy, I have a few friends who have welded the center diff to convert to RWD. Their speedos are still functional and their cars are reliable.
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Old 01-07-2013, 09:53 AM   #33
Andy_1up619
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Quote:
Originally Posted by jasoncanseeoh View Post
Andy, I have a few friends who have welded the center diff to convert to RWD. Their speedos are still functional and their cars are reliable.
Ok cool thanks, I think I am just going to go with this route and have it professionally welded at a shop so the diff will for sure hold up.
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Old 01-07-2013, 10:12 AM   #34
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Quote:
Originally Posted by Andy_1up619 View Post
I am thinking of converting my 2002 2.5rs impreza to RWD but PPG only makes the RWD spool for the wrx and Sti and I can't get a straight answer about the ppg spool fitting into my 2.5rs 5speed trans so my question is can the stock diff be removed and welded or is the ppg spool mandatory. also will my speedo still work after converting to rwd? I daily drive my car and would also like to know if doing the RWD swap is going to make my car unreliable for daily use?
You can weld it up. I did it on my old NA 5-spd back when I was RWD. For what it's worth, the center diff's are the same...I'd still just save the money, yank the diff and get out the stick welder.
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Old 01-14-2013, 09:50 PM   #35
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Anyone have any issues with clunking in the rear after converting? I have an 06 wrx rwd welded center and rear. I did remove the entire rear end when i converted. Thinking maybe something is not tightened all the way or there is play coming from somewhere. Just did the tic diff bushings and it made it alittle worse. Havent gone back under to really inspect as i have been lazy and my car is not a daily. I also experience a fare amount of wheel hop under hard accel. Any input appreciated.
Thanks

Last edited by wrxiting; 01-14-2013 at 10:02 PM. Reason: Deleted word
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Old 01-15-2013, 04:53 AM   #36
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Quote:
Originally Posted by wrxiting View Post
Anyone have any issues with clunking in the rear after converting? I have an 06 wrx rwd welded center and rear. I did remove the entire rear end when i converted. Thinking maybe something is not tightened all the way or there is play coming from somewhere. Just did the tic diff bushings and it made it alittle worse. Havent gone back under to really inspect as i have been lazy and my car is not a daily. I also experience a fare amount of wheel hop under hard accel. Any input appreciated.
Thanks
something is defiantly loose back there!!! i was gunna suggest bushings but u said u upgraded...so id go back under with ur ratchet/impact/whatever u use and re tighten everything
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Old 01-15-2013, 11:49 PM   #37
wrxiting
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Yah just havnt done it yet.
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Old 01-22-2013, 12:06 PM   #38
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Just thought I'd drop this off here. This guy makes a bell housing that allows you to bolt a Toyota W or R series transmission right up to an EJ.

http://www.billsautofab.com/forums/forum.asp?forumid=4
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Old 01-22-2013, 01:24 PM   #39
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Quote:
Originally Posted by Saavedro88 View Post
Just thought I'd drop this off here. This guy makes a bell housing that allows you to bolt a Toyota W or R series transmission right up to an EJ.

http://www.billsautofab.com/forums/forum.asp?forumid=4
Wow. You must have not looked at the first page...
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Old 02-12-2013, 01:28 AM   #40
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Default RWD is the ****.

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Old 02-22-2013, 10:06 PM   #41
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I am already in the process of converting to rear wheel drive. I just welded the center diff today at work.


I know watanabe makes center diff sleeves and axles plugs for ALL Subaru's but they are pricey
http://www.rhdjapan.com/pinpoint_res...l=All&x=33&y=9
I am planning on running a Kaaz or other high quality lsd for the r160. The subaru diff is weak because it only has 2 side gears to transfer the power through. Kaaz and other aftermarket diffs use 4. They hold up in sr swapped datsuns and older Nissan's so they should be good for the power level im going to be at.
http://www.kaazusa.com/products_lsd.html

I have heard of someone swapping an r200 in and using an s13 and an s14 driverside axles with nissan bearings. Of course the r200 had to be fabbed in.
The od of the nissan bearings is too large to fit in the subaru spindle but from what i read and cant find a link to atm is he machined down the nissan bearings to the subaru od and they fit and worked.
So pretty much dont need custom axles.

Last edited by Dirtracr95; 02-22-2013 at 10:28 PM.
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Old 02-27-2013, 10:24 PM   #42
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I've successfully welded two center differentials:

1997 STi 5 speed transmission with 2001 Sti clutchpack rear diff (2.2L engine)
1998 Impreza 5 speed transmission with open 3.9 rear diff (2.2L engine)

2.2L engine is just enough drift but not power-out...However I don't think the R160 should be used for RWD...more like R200 or bigger /stronger

Subaru output shafts are also not designed for that apllication

We also tried a welded 4.44 reear diff which ended up being a death magnet

The open rear diff was smooth and drift-less...unless you were in the rain then it drift with ease and control.

Removal, welding and installation was fairly easy...I highly recommend it if you have a spare transmission, diff and lots of time laying around

We've been running our RWD Subarus for over a year now with zero issues. (keeps fingers crossed)

I also have a FWD front LSD 5 speed which is fun but AWD or RWD for the win
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Old 03-04-2013, 04:46 AM   #43
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The r180 is a strong rear end. It's 180mm ring gear is plenty for stock and mild abuse. It was factory equipment in all the classic Datsun z-cars. In fact, if you want different ratios besides a 4.11, find some 280z rear ends. If you want a bolt-in r200, you need an 87-88 300zx non turbo. At least that's what I recall seeing that I needed since its a 3.90. Sadly, it's an open diff and would need an aftermarket lsd. But I decided I'd need that for when I want to switch back to awd.

I'm on the verge of my own rwd swap. It's all v7 type ra non-dccd parts. The diff is already welded and i have the r180, axles and hubs to install. I was hoping I can get improved highway speeds but I'll still be turning 3500rpm at 75mph. I'm going to start using 26" tall tires in the rear to help out with highway driving. I hope I can improve my combined fuel economy from 23mpg also.

On thing that you'll want to change is the caster. Rwd cars have a lot of it. We have as little as 3-3.5* of faster. This makes the car twitchy at speed and very slow to return to center coming out of a turn. Sometimes, past a certain steering angle, it'll hesitate to return to center. Get some camber plates and flip them so they slid front to rear. Sitting in the car, the plates should look like \ /. This way, adding positive caster will also net you negative camber. On my car, I currently have about -1.6* of camber and 5.4* of caster (in the right direction). When I do my swap, I'm going to use a gd subframe, retain gc lca's and shim them full-forward. Hopefully I can pick up a few more degrees of caster. The few degrees I've already gained made a big difference in steerin feel and response. It's much more weighty on-center. The steering wheel returns to center much more quickly. It's also more stable at speed. The additional caster has also improved my dynamic camber. Im able to maintain more negative camber during suspension compression and steering angle inputs.

On the topic of steering angle, rwd cars luck out here. This makes a big difference on slide angle as well as ability to make u-turns. I've noticed that high offset wheels can ruin a car's turning radius and steerin angle. I've seen and changed offsets on 3 diff vehicles that seem to confirm this: 1995 dodge ram 2500 4x4, 2001 Subaru 2.5rs and 1995 Toyota supra turbo. The ram went from +35 to -25offsets (265/70/17 to 325/65/18) and can now make full u-turns in just over 2-lanes. The Subaru went from +55 to +35 (205/55/16 to 225/40/18) and makes u-turns in less than 2-lanes width. The supra went from +43 to +55 (235/40/17 to 265/30/19) and takes more than 2-lanes to do a u-turn (either a multi point u-turn or running onto the shoulder).

This is just my personal experience.

Oh, btw, if anyone with a non-dccd 6sp (like the v7 jdm sti and 06-09 legacy gt spec-b), I want to buy the center diff. I need a spare.
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Old 03-04-2013, 06:56 PM   #44
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Old 03-06-2013, 04:04 PM   #45
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I had a welded r160 and i blew it up on wastegate
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Old 03-22-2013, 04:11 PM   #46
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I would love to buy a cheap bugeye and do this one day. I was surprised to see that there is actually a ton of interest in a RWD conversion when I did the search. Pretty damn sweet!
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Old 03-24-2013, 03:17 PM   #47
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Quote:
Originally Posted by Dirtracr95 View Post
I am already in the process of converting to rear wheel drive. I just welded the center diff today at work.

I know watanabe makes center diff sleeves and axles plugs for ALL Subaru's but they are pricey
http://www.rhdjapan.com/pinpoint_res...l=All&x=33&y=9
I am planning on running a Kaaz or other high quality lsd for the r160. The subaru diff is weak because it only has 2 side gears to transfer the power through. Kaaz and other aftermarket diffs use 4. They hold up in sr swapped datsuns and older Nissan's so they should be good for the power level im going to be at.
http://www.kaazusa.com/products_lsd.html

I have heard of someone swapping an r200 in and using an s13 and an s14 driverside axles with nissan bearings. Of course the r200 had to be fabbed in.
The od of the nissan bearings is too large to fit in the subaru spindle but from what i read and cant find a link to atm is he machined down the nissan bearings to the subaru od and they fit and worked.
So pretty much dont need custom axles.
I think he actually machined down the nissan hubs to fit the subaru bearings, the thread is in the "custom fabrication" sub forum, I would link it to here, but im on my phone
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Old 03-25-2013, 10:40 PM   #48
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I welded my center diff and I've broken 2 output shafts already. Stock r160 diff and axles. I broke the stock output shaft and a brand new oem one. All with in a 3 week period. Just trying to do a harmless burnout. Any solutions? Only stronger shaft I can find is PPG. And I'm having troubles getting in contact.
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Old 03-27-2013, 02:59 AM   #49
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I have gone through about 10 axles or so.. if your not afraid of a little bit of fab work I would say an r200 is your best option

Last edited by olsen726; 03-28-2013 at 12:48 AM.
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Old 03-30-2013, 12:54 AM   #50
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I have a 2009 2.5i Impreza that I am considering converting. I am looking at the Rear Wheel Drive Conversion Spool offered by PPG for the 5 spd WRX 99 onward.

Are the 2.5i and WRX gearbox vastly different? If not, would it be possible to install this conversion spool in my stock transmission?

http://www.ppgearbox.com.au/page.asp?productid=72

If this is not possible, has anybody heard of or seen a welded center differentiated in an 09+ 2.5i? I ask this because this center diff is supposedly located within the gear box on the later models.

thank you
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