2001 4EAT question...

[huck369]

I've got the chance to pick up a parts Forester for cheap.
It's a 2.5 with a 4EAT in it, the motor is most likely fubarred, as the right timing sprocket is shattered, but the tranny and rear diff are fine...

So I'm asking it a 2001 4EAT will work in a SVX, or other earlier Legacy/Impreza car.

I know they are a little different, as it has the screw on filter on it, but I doubt Subaru would have really changed anything major on it, and I'm figureing it would most likey be a plug and play set up...

Just wondering if anybody has installed one.

I need to know by next week, if I want to get it.

[bwb3]

I hope someone has an answer. I was hoping a newer replacement would work when the time comes.

[mbtoloczko]

I think there was a dicussion on this a while ago, and it was decided that the newer 4eats would not work because of a different gear brake mechanism (no longer using bands) on the newer 4eats. Harvey and Porter were discussing it. Maybe you can find the thread. I think it was the thread where Porter was thinking about using a JDM 4eat.

[Chiketkd]

Correct Mychailo. Oab also was talking about this recently in a thread in the mod section.

http://www.subaru-svx.net/forum/showthread.php?t=27966

Huck, the newer trans could be made to work, however, the TCU and wiring to the trans would need to be changed as well. The newer VTD 4EAT's use a clutch system instead of a brake band system.

-Chike

[huck369]

Originally Posted by Chiketkd

Correct Mychailo. Oab also was talking about this recently in a thread in the mod section.

http://www.subaru-svx.net/forum/showthread.php?t=27966

Huck, the newer trans could be made to work, however, the TCU and wiring to the trans would need to be changed as well. The newer VTD 4EAT's use a clutch system instead of a brake band system.

-Chike

I thought only the VDC models were set up that way....are all the newer ones VDC?...a 2001 Forester to be specific...

[Chiketkd]

Originally Posted by huck369

I thought only the VDC models were set up that way....are all the newer ones VDC?...a 2001 Forester to be specific...

I don't think most Subaru in the early 00's had VDC standard. I know the '03 Outback had VDC as an option.

From what I understand, all the Subarus with a 4EAT trans in the '99 or later model year had a VTD (variable torque distn) system that gave the car a torque split of 45/55.

-Chike

[oab_au]

Originally Posted by huck369

I thought only the VDC models were set up that way....are all the newer ones VDC?...a 2001 Forester to be specific...

Don't know at what year they changed from the band to the clutch, Huck, but the later model with the clutch has other speed sensors on the torque converter to sense the load. So if it has VTD or not, the TCU for that box has to be used. There are a number of additional wires that run between the TCU and box, also some signals that have to be accommodated for both the ECU and TCU.

Not impossible, but you would need a good Auto Electrican, to do the wiring.

Harvey.

[huck369]

Thanks Harvey and Chike...

So it wouldn't really be worth gettin, unless i had someone that wanted a 2001 tranny....oh well....didn't really have the extra money anyway....

Originally Posted by Chiketkd

From what I understand, all the Subarus with a 4EAT trans in the '99 or later model year had a VTD (variable torque distn) system that gave the car a torque split of 45/55.

-Chike

VTD is only found in the WRX, Legact 2.5GT, OUtback 3.0 VDC, and Baja Turbo.


Dave

[huck369]

Originally Posted by red95svx

VTD is only found in the WRX, Legact 2.5GT, OUtback 3.0 VDC, and Baja Turbo.


Dave

Dave,
So are you saying the 2001 Forester Tranny WILL work in a SVX?

Originally Posted by huck369

Dave,
So are you saying the 2001 Forester Tranny WILL work in a SVX?

I couldn't say for sure. But I can tell you that the Forester does not have VTD.


Dave

[oab_au]

Originally Posted by red95svx

I couldn't say for sure. But I can tell you that the Forester does not have VTD.


Dave

Yes it looks like they changed the band to a clutch at the 99/2000 mod. Some had VTD some had Transfer. Either way they are the same type of TCU set up, same amount of wiring.

There are 17 wires that run between the TCU and the gearbox, 14/15 on the SVX. The plug on the later TCU are 3X24 pin plugs, different to the SVXs 3 plugs of 1X12 pin, 1X16, and 1X20 pin, so the SVX wiring would have to be fitted to the later TCU plug. It also uses an extra speed sensor on the torque converter turbine, to sense the engine load.

I have not sighted the plugs on the later TCU, but they are different to the SVX plugs. It may be possible to pull the wires out of the later plug, and fit the SVX wires into it, along with some new ones. You would also need the section of the loom that runs down to the gearbox along with the plug for the gearbox.

Looks like a job for Huck, to be the first to graft a later auto.
Harvey.

[huck369]

Well if I got it, I would have the whole vehicle (or at least what’s left of it ) so I would have all the wiring and TCU at my disposal… but as my current cash flow is really low, I hate to drop money into it when I don’t even have anything to use it in currently…I wouldn’t mind having the engine around for parts…but there really isn’t anything on it I need, the good parts are both pass doors, and the tranny and rear diff, and the front seats, and a set of Forester steel rims….pretty much everything else is smashed or already gone….so I guess I’m going to have to pass on it….