JDM 4EAT interchange - FD ratio

[wtdash]

Hi,

I just bought an '02 WRX w/an AUTOMATIC that needs a new transmission - car doesn't move on its own @ all, per PO.

 

On ebay is a JDM 4EAT : TG5C7CBAAA-Y1

 

Does anyone know if there's an interchange chart for the ATs? I've seen the manual 5/6-speed chart on NASIOC, etc. but nothing for the 4EATs.

 

I know the US-spec is a 4.11 FD Ratio.

 

Neither the Seller on ebay nor my local Subie dealer can confirm the ratio.

 

Thanks

 

 

[AdventureSubaru]

Not aware of a chart, but I think the 2000-04/05ish only came in 2 gear ratios. The 4.44 was foresters and outbacks - 4.11 was legacy/impreza as best I know. Here's the thread from a few years ago that educated me.

 

http://www.ultimatesubaru.org/forum/topic/124712-about-to-do-my-first-4eat-swap-have-a-few-questions/?hl=4eat

 

We ended up swapping a forester trans in and it is still driving to this day. If you can confirm that yours is a 4.11 you should be safe with a trans out of any 2000-04 Legacy. I'd take each trans as a case by case basis and try and look up the ratio of each trans code just to be sure. Or just swap a matching rear diff and not worry about it.

[forester2002s]

From the FSM for 2002 Foresters - Final Drive Ratios:

- 5MT 4.111

- 4AT 4.444

[wtdash]

Thanks for the replies. Japan 's / JDM stuff doesn't always follow USDM specs, esp. for the turbo models.

[johnceggleston]

first , google the number.

 

next look for the number in the europe section of  hyyp://opposedforces.com/parts

 

look at the WRX trans for similar years as yours.

if you find the trans number,

then look up the rear diff ring and pinion in the ''train'' section.

[wtdash]

Thanks John...I didn't think to check the Europe models. They show the same part number for the trans:TV1A4YN2AA

 

And this for the FD under Train:

Differential assembly-rear   1     27011AA680          

4.111 VISCOUS LSD

'01, April — '02, Octobe