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Old 03-12-2013, 10:07 PM   #1
Rymaster
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Default 02 and 03 WRX 4EAT - TCs and VBs the same?

Was just wondering if anyone can confirm that the 02 and 03 WRX 4EAT's have the same valve bodies and torque converters in them?

Are they the same for the sedan vs. the wagon as well? I searched but couldn't seem to find a clear answer to either of these questions.

Thanks ahead of time
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Old 03-13-2013, 10:05 AM   #2
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Moved. Please learn to post in the appropriate forums.
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Old 03-13-2013, 05:13 PM   #3
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Anyone?
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Old 03-13-2013, 10:52 PM   #4
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Okay so I found out the the TC is the same but can anyone confirm that the Valve body is?
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Old 03-14-2013, 09:53 AM   #5
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Call IPT and ask them. I am sure they will know. Most likely those parts are interchangable.
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Old 03-14-2013, 01:05 PM   #6
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I did that and they just told me "most likely" because they won't confirm anything without actually seeing it.

Was just hoping for 100% confirmation but I guess I'll just swing it =P
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Old 03-14-2013, 01:07 PM   #7
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I would assume they are the same. Very few differences if any. As long as the trans is from a WRX and confirmed it is a VTD 4EAT Transmission, you should be good.
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Old 03-14-2013, 01:19 PM   #8
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Gotcha, thanks guys
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Old 03-14-2013, 03:26 PM   #9
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Yeah no worries, good luck. What are you planning to do? Fully Built Trans?
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Old 03-14-2013, 04:36 PM   #10
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No, I'm just thinking about only doing the valve body(IPT) now to give the clutch plates a chance to last longer. Putting a Blouch evo III 16g on with supporting mods, so it'll prolly only be around the 300whp range. It's just a daily driver so I'm thinking I don't really want to do a high stall torque converter anymore. I never launch the car so I don't really see the need for the TC currently.
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Old 03-14-2013, 08:59 PM   #11
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I would still get it rebuilt even without the torque converter. More power equals more stress. It's best to refresh the whole thing.


Here's an example of what to expect.
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Old 03-14-2013, 10:33 PM   #12
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I have a 4EAT that has turboback, catless uppipe, tmic, intake, stage 2 reflash and my torque converter came apart inside of itself which then sent bits into the filter which clogged which then burnt up the 3rd gear clutches all at 78,000 miles.
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Old 03-14-2013, 11:31 PM   #13
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Quote:
Originally Posted by Strider327 View Post
I would still get it rebuilt even without the torque converter. More power equals more stress. It's best to refresh the whole thing.
That be nice but I don't really have the cash nor time to currently drop the trans and rebuild it. I'd almost rather let it blow and just swap out with another cheap stock tranny/possibly beef that one up.


Quote:
Originally Posted by WRX_02_227 View Post
I have a 4EAT that has turboback, catless uppipe, tmic, intake, stage 2 reflash and my torque converter came apart inside of itself which then sent bits into the filter which clogged which then burnt up the 3rd gear clutches all at 78,000 miles.
For how many miles was the car stage 2 and how did you drive it? Stomp on it a lot or launch a good bit? Or pretty normal driving?

Just curious...




And should I bother adding an aftermarket tranny cooler even though I'm not doing a high stall TC because that adds most of the heat I know...is a tranny cooler required with just a VB upgrade?

Last edited by Rymaster; 03-14-2013 at 11:37 PM. Reason: Question
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Old 03-14-2013, 11:57 PM   #14
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It was stage 2 for around 55,000 miles. It was launched maybe 10 times the entire time I have owned the car. Pretty much normal driving and sometimes would drive it hard but certainly not beating on it.

Money is my limiting factor as well. It cost me $3300 for a rebuild. If it blows up again I will just charge the full IPT trans and be done with it. The guy who rebuilt my transmission used to do all the Subaru Road Race team transmissions so I am not too worried.

Trans cooler won't hurt no matter what mods or stages are done. The stock cooler runs through the radiator.
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Old 03-15-2013, 12:00 AM   #15
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Yeah the current trans I have in has ~120k on it, I think it's been stage two for a good while also although I'm not positive. I'm sure it's only a matter of time until it goes, especially with going with a bigger turbo.
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Old 03-15-2013, 12:04 AM   #16
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Yeah mine might have been a fluke or a defect somewhere. I would just mod how you want to and go from there. My trans guy did say though he is totally against flushes and only recommends drains and refills. We also went full synthetic in my trans and diffs.
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