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  #16  
Old 12-18-2012, 01:27 PM
1986nate 1986nate is offline
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Re: Intermittent shuddering

Quote:
Originally Posted by ShaneHobson View Post
So I need to find out if trans code : TZ102YBABA-CF originally from a 1994-96 Legacy (NZ/JDM) is VTD or ACT4

Any suggestions from the audience ?
If it was a 2.0 liter non turbo (we never got that engine here in the states) it would be ACT4. If it were a 2.0 turbo, it would be a VTD. I'm not 100% certain, but as far as I've seen and understood, only the turbo engine models other than the SVX, have the VTD.
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  #17  
Old 12-18-2012, 04:04 PM
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Re: Intermittent shuddering

Quote:
Originally Posted by BRADY View Post
Hi Shane.

Everything that I have studied on the SVX makes me believe that the NZ model is pure JDM, no mods at all.

The Australian model was modified (eg. Glass headlamps, no JDM options like fog lights or fabric interior)

I would suggest you treat your SVX as a JDM model. I don't believe there ever was such a thing as a NZDM. The market is too small.
Hi Mike.. the "NZ-New" SVX's were the same spec as for Australia.. glass headlights, no fog lights etc etc etc... however the vast majority of those sold in NZ were aftermarket imports and hence JDM spec.
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  #18  
Old 12-18-2012, 04:08 PM
oab_au oab_au is offline
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Re: Intermittent shuddering

Quote:
Originally Posted by ShaneHobson View Post
To clarify my own thoughts and to summarise for those who don't want to read the whole thread later.

JDM car in NZ with intermittent drive train shuddering.
Trans has been replaced with a trans from a parts JDM SVX.
Trans code = TZ102YBABA-CF
Dealer tells me this trans is originally from a 1994-96 Legacy.
Safe to assume that both SVXs are VDT (they're both JDM).

Heritage of the ex-Legacy trans is unknown.
Is it VDT or ACT4 ?
Need to know for sure the diff ratio required for the ex-Legacy trans.

Drive ratio for the trans is likely to be wrong for the SVX it has just been fitted to, but the parts car may have had the diff swapped when the trans was swapped. So I need to identify the diff in the parts car.

VDT type car does not have FWD (front wheel drive) only fuse. Instead this acts as a diff lock providing 50/50 front/rear drive.
FWD fuse cannot be used to disable rear drive.

Other suggestions received along the way :
Bad front axle
'universal joints' on the front/rear end of the diff
It may be the inner front CV joints. If memory serves we had an intermittent drive train shudder which was fixed by removing, stripping, regreasing and swapping the CV joints over - left for right
Can't give you answer Shane, but can throw a few more clues.
Your 92 JDM TCU will only run pre 95 JDM boxs. The C solenoid changed in 95 from a NO to a NC valve. If it is a latter JDM Svx box the C solenoid will work the oppersit way, if you fit the Dif Lock fuse it will stop the Clutch from working.

Does the new box have a Three wire speed sensor in the front diff, or a two wire. Needed for the TCU. All the other gear boxs have an internal front speed sensor.

If the box fitted and ran, I would think it is an pre 97 box. The type of front speed sensor will tell.

Harvey.
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  #19  
Old 12-23-2012, 01:52 AM
ShaneHobson ShaneHobson is offline
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Re: Intermittent shuddering

We're going to have a crack at removing the diff from my parts car, take it into the dealer to fit into my shuddering car.

Before doing that, I really want to get the specs on the transmission to find out exactly what ratio it is expecting the rear diff to be.

Trans is TZ102YBABA-CF from a 1994-96 non-turbo Legacy.

Can anyone tell me where I can find some detailed info about this trans ?
Such as VDT or ACT4 and rear diff ratio ?

Thanks
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  #20  
Old 12-24-2012, 09:07 AM
Svxswede Svxswede is offline
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Re: Intermittent shuddering

Hi,

I can confirm that the box is from a twinturbo legacy as i have had one and also repaired the box due to a bearing failure. The box is vtd but might differ in ecu and vss sensors. Also check out http://www.rexnet.com.au/forum/index...of-my-gearbox/

Happy holidays, Alex
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  #21  
Old 12-25-2012, 03:10 PM
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Re: Intermittent shuddering

Shane,
NZ new is like Aus new With glass headlights and has non-USA type transmission
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  #22  
Old 12-25-2012, 11:27 PM
ShaneHobson ShaneHobson is offline
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Re: Intermittent shuddering

Quote:
Originally Posted by Svxswede View Post
Hi,
I can confirm that the box is from a twinturbo legacy ...[/url]
Interesting read. The local dealer would disagree with you. But I suspect I trust your info more than his.
Anyway, I think you have confirmed for me that I've got a 4.44 trans and it is also VTD. That fills in some of the gaps in my information.

So now I can have a crack at determining what sort of diff is fitted to my parts car (should be 4.44) and if it's right, then take the whole lot to a local garage to swap over.
Also good news that it's VTD, as that SVX original trans is also VTD.

Thanks, Shane
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  #23  
Old 12-25-2012, 11:28 PM
ShaneHobson ShaneHobson is offline
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Re: Intermittent shuddering

Quote:
Originally Posted by SURTEESS View Post
Shane,
NZ new is like Aus new With glass headlights and has non-USA type transmission
I'm struggling to read between the lines, are you contradicting or confirming something else in this thread ? I just want to be sure I don't miss some important info.
Thanks, Shane
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  #24  
Old 12-26-2012, 09:19 AM
1986nate 1986nate is offline
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Re: Intermittent shuddering

Quote:
Originally Posted by ShaneHobson View Post
Interesting read. The local dealer would disagree with you. But I suspect I trust your info more than his.
Anyway, I think you have confirmed for me that I've got a 4.44 trans and it is also VTD. That fills in some of the gaps in my information.
http://www.subaru-svx.net/forum/images/editor/color.gif
So now I can have a crack at determining what sort of diff is fitted to my parts car (should be 4.44) and if it's right, then take the whole lot to a local garage to swap over.
Also good news that it's VTD, as that SVX original trans is also VTD.

Thanks, Shane
There are still two different C solenoids for the VTD trans and the switchover was 95 so there still could be a problem potentially. Take a picture of the rear housing on the trans in the car and compare it to the trans that came out. The ACT rear housing is much smaller than the VTD housing.
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  #25  
Old 12-31-2012, 04:07 PM
ShaneHobson ShaneHobson is offline
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Re: Intermittent shuddering

I plan on removing the rear diff from my parts car to take into the garage with the shuddering car for them to fit.

I want to keep the parts car mobile, assuming I remove the rear drive shaft will it still be mobile, but front wheel drive only or do I have to do other stuff to keep it moving.

Thanks
Shane
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  #26  
Old 12-31-2012, 04:27 PM
oab_au oab_au is offline
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Re: Intermittent shuddering

Quote:
Originally Posted by ShaneHobson View Post
I plan on removing the rear diff from my parts car to take into the garage with the shuddering car for them to fit.

I want to keep the parts car mobile, assuming I remove the rear drive shaft will it still be mobile, but front wheel drive only or do I have to do other stuff to keep it moving.

Thanks
Shane
Assuming that the "parts car" is a JDM, its VTD and it will only drive the front wheels, without the rear drive shaft, if the "Diff lock" fuse is fitted. This will enable you to move it around. Don't drive it anywhere, or the clutch will fail.

Harvey.
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  #27  
Old 01-01-2013, 12:36 AM
ShaneHobson ShaneHobson is offline
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Re: Intermittent shuddering

Here's a pic of the diff in my parts car. It has a TU sticker on it.
Does anyone know what that means ?
Attached Images
File Type: jpg IMG_5234 sml.jpg (264.9 KB, 175 views)
File Type: jpg IMG_5237 sml.jpg (362.7 KB, 167 views)
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  #28  
Old 01-01-2013, 12:37 AM
ShaneHobson ShaneHobson is offline
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Re: Intermittent shuddering

Quote:
Originally Posted by oab_au View Post
Assuming that the "parts car" is a JDM, its VTD and it will only drive the front wheels, without the rear drive shaft, if the "Diff lock" fuse is fitted. This will enable you to move it around. Don't drive it anywhere, or the clutch will fail.

Harvey.

I won't be driving it anywhere. Transmission is toasted, so it's only good for about 25 km/h top speed.
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  #29  
Old 01-02-2013, 12:33 AM
ShaneHobson ShaneHobson is offline
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Re: Intermittent shuddering

Jacked up the parts car with a scissor jack (in absolutely pristine condition from my 25 year old MR2, the factory tool kit looks brand new, first time I've opened it) because I couldn't find my trolley jack.

Turned the drive shaft and counted revolutions on the rear wheels and confirmed it's a 4.44:1 diff. So at least we're on the right track.

Dropped the diff out. My friend helping me didn't trust the instructions I was using (courtesy of these forums) and was convinced that popping the axles out was a recipe for disaster and we would be swimming in diff oil.
Fortunately he was wrong, he expressed amazement at how easily the axles came out of the diff as we lowered it down.

So now we have agreed to barter an old iMac for his time to fit the diff into my daily driver. I'd better go and buy a trolley jack before then.

That job is planned for this Friday, so hopefully we'll be back on the road this Saturday.
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  #30  
Old 01-02-2013, 01:17 PM
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Re: Intermittent shuddering

Quote:
Originally Posted by ShaneHobson View Post
Here's a pic of the diff in my parts car. It has a TU sticker on it.
Does anyone know what that means ?
No, but judging from the pentacle on the second picture, your diff may have magical protection from breaking. :P
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