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Old 04-07-2014, 11:53 AM   #1
TomTucker
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Default Replace 02 WRX Trans with JDM WRX?

Second gear finally went out on me on the 5spd, and I found a JDM WRX transmission TY754VBBBA 4.111 ratio 5MT that is fairly inexpensive. Will this directly bold up to my current diffs/housing? Thanks.
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Old 04-07-2014, 01:54 PM   #2
JarHarms
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It will bolt to your engine block but it will not work with your existing rear diff - ratio miss match.

Last edited by JarHarms; 05-08-2014 at 11:08 PM. Reason: v - oh jeeze
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Old 05-08-2014, 08:36 PM   #3
ScrewNutBolt702
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I guess this is the place to ask. I have a 2002 wrx 5mt and I found a metal piece in my tranny fluid about 1/3 the size of a dime. Any advice/tips I'm new to the subie world. I would create my own thread but I'm to new.
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Old 01-21-2021, 11:05 AM   #4
Jaws4God
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2003 Impreza WRX 207
02C, 42C World Rally Blue

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Quote:
Originally Posted by TomTucker View Post
Second gear finally went out on me on the 5spd, and I found a JDM WRX transmission TY754VBBBA 4.111 ratio 5MT that is fairly inexpensive. Will this directly bold up to my current diffs/housing? Thanks.
is the JDM 5spd more robust than the usdm 5spd ?
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Old 01-21-2021, 11:29 AM   #5
snow_bound26
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No. The gears are the same.
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Old 01-21-2021, 11:47 AM   #6
Jaws4God
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Quote:
Originally Posted by snow_bound26 View Post
No. The gears are the same.
ok so paying for a JDM 5spd with matching DIFF would not give me any additional strength, it would just change my gearing ratio?

Thank you.
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Old 01-21-2021, 12:21 PM   #7
snow_bound26
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Yes it would only change the gearing ratio. If you are the type to dump the clutch and be aggressive with the throttle at low RPMs then you're just as likely to break it. With the shorter final drive you'll increase RPM faster which will technically reduce shock load but it's a crap shoot as to whether it will actually make a difference as there's so many other variables to account for. Having owned one, I will say the gearing is far more fun to drive. I never felt line the 3.9 was suited for the 5 speed personally.
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Old 01-22-2021, 09:39 AM   #8
Jaws4God
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Quote:
Originally Posted by snow_bound26 View Post
Yes it would only change the gearing ratio. If you are the type to dump the clutch and be aggressive with the throttle at low RPMs then you're just as likely to break it. With the shorter final drive you'll increase RPM faster which will technically reduce shock load but it's a crap shoot as to whether it will actually make a difference as there's so many other variables to account for. Having owned one, I will say the gearing is far more fun to drive. I never felt line the 3.9 was suited for the 5 speed personally.
Thank you. I think i'm leaning towards getting another 5spd and just have to be sure i'm much more careful putting into gear during heavier acceleration.
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Old 01-23-2021, 12:30 AM   #9
GeoNV
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Iíve been debating this for when it happens. Iím leaning towards you could buy 3-6 5 speeds for the price of an STi swap. And itís not that hard to swap them out.
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Old 01-23-2021, 12:48 AM   #10
snow_bound26
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But then you are going to have more down time, frustration and still end up spending just as much money in the long run.
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Old 01-23-2021, 09:34 AM   #11
FuJi K
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MY99 GF4 JDM 6spd
NF Performance

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The JDM 5spd is a great factory replacement for lower power levels around 300whp. Shorter gear ratios for peppier driving. If you ask me, the gear spacing is like a Legacy Spec B without 6th gear. Similar to the STI long gears with a longer 5th than the STI.

Anything more than 350whp I'd go 6spd all day.
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