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Old 07-29-2005, 03:37 PM   #1
Huffer
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Default driveshaft interchangeability

Does anyone know which driveshafts (not axles) are interchangeable with the 98 GT (BD series). This is for an automatic.

I have a vibration that only occurs in *some* gears, at the same RPM, which means that the driveshaft is spinning at different speeds - which means it's unbalanced.

I've done a search, but most of the information is regardin STi swaps and AT to MT swaps.
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Old 07-29-2005, 04:59 PM   #2
xcntrk75
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It’s got to be from another Legacy or possibly Outback. You can scratch any Impreza off the list as they’re 3” shorter…
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Old 07-30-2005, 10:39 PM   #3
Jonathan
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Ummm... It might be cheaper to just have a speed shop or local machine shop test your existing driveshaft, and if found out to be out of balance they might try adding weight to certain areas or possibly machining off small sections.

Unless you have been off-roading your Legacy (and managed to coat part of your driveshaft with mud, for instance) I am somewhat skeptical that your driveshaft is at fault. If this is the case, then swapping out your driveshaft is unlikely to make much differance, although I dunno what else to blame. (Possibly your Auto tranny ? Rear Diff ? maybe an excessivly worn Universal joint ?)
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Old 08-01-2005, 10:21 AM   #4
Huffer
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From what I understand of Subaru driveshafts - they are unrepairable, as they are a complete unit. Any other info?

I've got to check the fluids in the front and rear diffs this week as well.
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Old 08-01-2005, 10:39 AM   #5
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If you need a drive shaft I got one from a 98 GT Auto.
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Old 08-01-2005, 10:58 AM   #6
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Quote:
Originally Posted by AFBeefcake
If you need a drive shaft I got one from a 98 GT Auto.
Thanks dude, I'll let you know if I think I need it. have a few other issues to sort out at the moment.

I guess this is what you get when you buy a $4000 car!
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Old 08-01-2005, 11:54 AM   #7
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driveshaft joints are non-serviceable...
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Old 08-01-2005, 12:09 PM   #8
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Don't get one from an outback. The mount for the center bearing is 1" higher due to the body lift the outback has. It made all sorts of noise, and rubbed on the rear diff cover that i have. I could have just swapped my old center bearing / carrier bearing on to the shaft, but it was easier to just get a new one.

Before you spend money, I'd definately make sure your that it is your driveshaft. Out of the cars I've seen come through the shop the past 4 years, and all of the EJ series cars my dad's seen since the 1989, He's only seen one Legacy / Outback / Forester / Impreza Driveshaft Fail, and that car had over 400,000k on it.

The driveshafts are servicable, but it costs alot to have them serviced. It's cheaper to buy a brand new one from subaru, than it is to repair the one you've got. Brand new ones are ~500.00. I was quoted $650 (+tax) by Drivelines Northwest, and + or - 50.00 to have it fixed at 3 other local places.

The cheapest option for me was to just go down to my local wrecking yard and pick one up. It cost me 50.00, and it works perfectly.
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Old 08-01-2005, 12:21 PM   #9
Huffer
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Thanks team. I currently have been offered two driveshafts from people who have done AT - MT swaps...one bundle comes with a transmission and rear diff.

I took it to my local dealer service department (the chief there is trusted by a number of local guys) and he diagnosed it as a worn tranny mount. I guess with 173,000miles, a worn tranny and/or engine mounts won't be in great shape. I do have a new tranny mount to go on, but with the shortblock a few weeks from being dropped out (see my other thread), I was planning to a whole lot of stuff at the same time.
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Old 08-01-2005, 12:41 PM   #10
xcntrk75
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^^^^
Well that's a much cheaper and easier fix...

Good luck...
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Old 08-01-2005, 04:09 PM   #11
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I'll second the Don't use an outback statement as they don't work. I know as i just tried and the guy is right that the mount it different.
If you get it rebuilt, it shouldn't cost more than 300 bux, but you can NOT buy a center carrier barring from subaru. I don't think anyone in the aftermarket makes one either, so that means new shaft or go to the junk yard...
Brent
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Old 06-21-2008, 08:19 AM   #12
michaelSVX
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Quote:
Originally Posted by wrx_driver_2002 View Post
Don't get one from an outback. The mount for the center bearing is 1" higher due to the body lift the outback has. It made all sorts of noise, and rubbed on the rear diff cover that i have. I could have just swapped my old center bearing / carrier bearing on to the shaft, but it was easier to just get a new one.

Before you spend money, I'd definately make sure your that it is your driveshaft. Out of the cars I've seen come through the shop the past 4 years, and all of the EJ series cars my dad's seen since the 1989, He's only seen one Legacy / Outback / Forester / Impreza Driveshaft Fail, and that car had over 400,000k on it.

The driveshafts are servicable, but it costs alot to have them serviced. It's cheaper to buy a brand new one from subaru, than it is to repair the one you've got. Brand new ones are ~500.00. I was quoted $650 (+tax) by Drivelines Northwest, and + or - 50.00 to have it fixed at 3 other local places.

The cheapest option for me was to just go down to my local wrecking yard and pick one up. It cost me 50.00, and it works perfectly.
Is it possible to replace a carrier bearing mount? Mine is all mushy and causes a lot of slop in the drivetrain. What I'm refering to is the rubber donut that holds the driveshaft centered.
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