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Old 02-17-2016, 10:16 PM   #1
E_Jay_Twenty
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Default Help identifying (JDM) STI 6 speed without ID tag

So I've been offered to buy a 6 speed STI transmission. Owner got it in a package deal from a local Subaru shop and was told it was a JDM 6 speed. The problem is the ID tags are still on the case but there's no numbers or letter left on the tags.
I've been trying to find another way to identify what year the transmission is from or if it is a JDM transmission. Maybe counting the splines on the axel stubs?
Please help me, it's useless to me without knowing what version it is, 7,8,9. Here's some pictures


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Old 02-23-2016, 06:54 PM   #2
E_Jay_Twenty
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Bump any ideas?
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Old 02-24-2016, 06:53 PM   #3
mrsaturn7085
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Removing the tail to check if the DCCD is the later model would ID it as v7/8 vs. v9... Beyond that you've got a lot more to check...
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Old 02-24-2016, 09:06 PM   #4
jwong1208
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The axle stubs in the front already narrow the years down to an early 04 transmission or earlier. Early 04 had axle stubs and female front axles. Late 04 on wards had female axle holes and male front axles. Looks like you can narrow initially to:

Version 6
Version 7
Early Version 8

Also look at the shift linkage The color of the shifter linkage is usually silver for USDM models, while JDM ones i personally see gold colored shifters / shift linkages. USDM and JDM shifter linkages have different shift linkages (just slightly).

You could have a combination of center & front diff types as listed below:
Viscous Center + Open front diff
Viscous Center + Suretrac front diff
DCCD + Suretrac front

This is the only difference between them
The ratios / final drives are exactly the same for early JDM transmissions. (They're all short geared)

All in all, only real way is to pull it apart. Remove the tail first.
If you have DCCD, you have a suretrac front too
If you have a viscous, take the front housing off and check for suretrac or open.

Other than that, exact code is really hard to narrow down.

This is the best of my knowledge lol. hope it helped.
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Old 02-25-2016, 10:45 AM   #5
mrsaturn7085
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I can also tell you it's not a Spec C transmission - no 6MT cooler pipes on the side.
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Old 02-25-2016, 06:35 PM   #6
E_Jay_Twenty
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I'm pretty sure this trans has the opposite, female stubs on the trans and axels would be male stubs.
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Old 02-25-2016, 08:41 PM   #7
mrsaturn7085
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No such thing - female 'stubs' would be the holes in the front diff.
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Old 02-25-2016, 11:44 PM   #8
E_Jay_Twenty
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Sorry that's what I was referring to. the trans has female "holes"and the axels would have male stubs.
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Old 02-26-2016, 10:49 AM   #9
jwong1208
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oh; in that case; cant help you there. lol, sorry.

I read "splines on the axle stubs" and assumed the transmission had axle stubs.
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Old 02-26-2016, 11:39 AM   #10
mrsaturn7085
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Honestly, the best I can tell you is this - if you have the electrical DCCD connection on the outside, you've got a DCCD. If you then remove the tail section and ID the DCCD as the early or late model, you'll either have it narrowed down to two models (v7/v8) or the later (v9).

At this point, what does it matter? All the JDM models had the shorter 5th-6th gearing, and if the DCCD was incorrect (for your goals), you'd simply be looking at a DCCD/transfer gearing swap.

There was a lot less shuffling of parts (year-to-year) inside the EJ207 6MT than the USDM market experienced. Basically the motor was designed around a high-revving 2.0 liter engine, and once Subaru slapped it on to a 2.5, they realized they needed to fine tune it over the course of a few years.
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Old 03-04-2016, 08:22 PM   #11
E_Jay_Twenty
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I'm going to assume its a Non Dccd because theres no extra wire on the tail end of the harness going to the passenger side. Every non-dccd one i see on ebay has no extra wire. Every dccd one i see has the wire So I'm guessing v7 non-dccd.
would that make sense?
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