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Old 10-05-2001, 03:46 PM   #1
Nick
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Question 99 2.5RS to 22B Tranny/Diff Conversion?

What would it take to fit a 22B tranny & all differentials to a 99 2.5RS.

Nobody seems to know for sure.

Ideas on the table...

Driveshaft?
Axels?
Shifter Linkage?
Clutch & Flywheel? (99% certain about this)

What of those definilty does or dosen't need to be changed? What else might have to be changed?
What can be salvaged to use from the RS?
Would it make a difference if I had the 22B rear hubs?

-Nick
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Old 10-05-2001, 03:54 PM   #2
NickSTi
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my bet would bet the whole drivetrain.
the clutch and flywheel for sure.
the transmission goes without saying.
the axles.

if you can you could as well get everything. sounds like if you are up to something. looks like trouble for me
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Old 10-05-2001, 03:57 PM   #3
jeffg
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From what I remember from other people talking about this:

You will need all 4 hubs. The axles are different than WRX, STI or RS axles. I think they are bigger and longer. I am not sure about the fronts, but I bet you are facing the same situation. And if you swap hubs, you will probably need the rest of the suspension arms too.

You will need to get the transmission, driveshaft, rear diff.

You will need to swap the clutch system, one way or the other, just like any WRX tranny swap. The RS pushes and the WRX pulls, or something like this. I heard you can just bolt in the RS slave cylinder.

Since you choise 22B, I assume you want the adjustable center diff. This is a major project. You will need, guage cluster, dial control, tranny control unit and all the harnesses. A member in canada is currently working on this swap from an RA and I dont think it even works yet. I will be watching for his results also with my RA tranny.

As far as installing the drivetrain, I think it will bolt up. The crossmembers and things SHOULD all be the same. Dont hold me to that, I have never actually seen a 22B.

Good luck if you choose to do it.

BTW, why 22B? Type R/RA is much easier to find. Just a thought.

Jeff
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Old 10-05-2001, 04:14 PM   #4
Nick
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Nick... now why would you think a thing like that...

I'm not looking to replace the suspension. I wasn't going to try to replace the front hubs. I was just going to replace the rears as I might have a set of 22B brakes as well.

I know the center diff does have it's own ECU. Why would I need the gauge cluster? Is there an information display regarding the center diff? I will have all the controls though (Tranny ECU, dial).

I was already planning on getting the stock clutch so that parts sorta been taken care of.

This is all a pipe dream so far... but I got a wrench and I'm looking at it pretty hard. I'm still at the making a shopping list stage. And don't want to forget the butter. Don't have enough money to break any eggs making this omlette.

-Nick
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Old 10-05-2001, 04:38 PM   #5
jeffg
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The guage cluster has a set of lights that show you where the center diff is positioned.

The front hubs would need to match the axles, so if the 22B axles are bigger, you will need new hubs. This is the same situation you have in the rear. If the axles are not different you would only need the rear hubs to fit the new brake calipers.

Do you know where the additional track on the 22B is added? Is it suspension related or just wheel offset and hub?
If the axles are truely longer that could create some interesting situations.

I want to follow this swap if you decide to do it....

Jeff
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Old 10-05-2001, 04:46 PM   #6
Nick
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I'm pretty sure I read somewhere the offset is in the wheels themselves... not the suspension or the axels... but I could be totally wrong.

-Nick
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Old 10-05-2001, 05:29 PM   #7
bsquare
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Back in the dark ages last year I posted a list I got from a 22B owner of all the suspension parts that are different. It definitely is not just different offset wheels.


Ben
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Old 10-05-2001, 07:08 PM   #8
North Ursalia
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That Russian guy is putting thoughts into your head, isn't he Nick ? You know my side of the story, but I'd still hate to be wrong .

Brian
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Old 10-06-2001, 08:46 AM   #9
go go go
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I don't think 22b drivetrain is any different from STi-RA except the engine. Oh the calipers are red. But it's just the color of the paint, nothing else is different.

you need.
rear hub, rear axles, DCCD, DCCD computer, harness, instrument cluster, rear brakes, clutch&flywheel, transmission, rear diff assy.

I think that's it.
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