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Old 02-02-2004, 05:34 PM   #1
I_smoke_hondas
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Question Crossmember swap

Is there any way I can fit the STi tranny mount on my '93? I tried once then found out I have a completely different crossmember than later model Imprezas.

The mount bolts up to the tranny perfectly, but with the different crossmember shape, it wont reach around the braces of the hardened mount.

Would there be holes in the frame of my car elsewhere so I could use the later model crossmember? I'm pretty sure I saw it bolt on right next to where the front L-arm mounts, in pics I saw of ALKs on misc sites...
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Old 02-03-2004, 12:41 PM   #2
stimpy
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Quote:
Originally posted by I_smoke_hondas

The mount bolts up to the tranny perfectly, but with the different crossmember shape, it wont reach around the braces of the hardened mount.
I'm not sure what you mean by "reaching around the braces of the hardened mount".

My understanding is that all you need is the different transmission crossmember and the new transmission mount. I haven't personally tested this though.

-Jon
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Old 02-03-2004, 04:29 PM   #3
I_smoke_hondas
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Correct, a new mount AND x-member.

What I meant is the new x-member is "H" shaped and the center piece of that is what the mount bolts to on the bottom side of the mount. MY x-member is only one piece that is parallel to the mount and only runs directly underneath it so any extra clearance needed is not there for the beefier mount. Thanks, Jon.

-Andy
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Old 02-03-2004, 05:02 PM   #4
stimpy
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Oh ok. So you don't have the newer transmission crossmember? You need that .

-Jon
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Old 02-05-2004, 02:03 PM   #5
I_smoke_hondas
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Yea, I know I need the newer crossmember- that is what I was trying to say in the original post. My main question is whether or not I have threaded holes to mount the different crossmember to. Does my older body style have capped holes, like it did for the rear sway bar mount, so I have the option of upgrading without needing to do some extensive drilling/tapping? I would think Subaru would think about that as they did the sway bar mounts but they've done some strange things over the years.

Thanks,
Andy
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Old 02-05-2004, 03:44 PM   #6
stimpy
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Should have the holes and everything.

-Jon
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Old 02-05-2004, 05:53 PM   #7
I_smoke_hondas
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That wierd...why would they put this dinky little crossmember on early models that vibrates like crazy, then PLAN on having it on later years by pre-threading and then capping the holes for the nice beefy crossmember?

Same thing with my rear sway bar- no holes, mounts or anything, but all the holes to put one on later...

Were they not planning on the Impreza lasting more than a couple years? Too bad for me...but at least I'm one of very few who owns the first year production Impreza!!
Not many out there can say that. Thanks again.

-Andy
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Old 02-05-2004, 06:00 PM   #8
Kostamojen
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This was my solution: http://forums.nasioc.com/forums/show...0&pagenumber=2

Only cost $15

As for swaping crossmembers, it wont work unless you get the new style tranny in as well, the mounting locations are different.

Also: Get some of those whiteline rear diff bushings while you are at it and install them, very easy install and helps with the drivetrain thunk a ton!
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Old 02-06-2004, 04:35 PM   #9
I_smoke_hondas
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Why do you say the newer crossmember won't work?? I had the STi mount bolted on to my car but the little crossmember hit the mount before I could start threading bolts.

I just don't see why the new crossmember wouldn't work since all these cars are pretty much identical, it seems weird that of all things, the entire tranny setup is different...

Oh well. I liked your "goo" mount- did it really make that much of a difference? Definitely looks better Thanks
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Old 02-06-2004, 10:57 PM   #10
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Yes, the eurathane filled mount made all the difference in the world. It took a week to cool hard enough, but once it did it was as stiff as a rock.

As for the crossmember, the new style H crossmeber (3 piece) has a different location relative to the transmition where the tranny brace bolts up. The straight across one like we have actually sits a little farther forward, so if you were to try and swap it, you would end up with the mounting point for the brace being in a different spot than it needs to be, thus requiring the newer style tranny for it to work.

These older trannys actually sit a little farther forward, and even have different offsets for the flywheel and such. You can visually see the difference when youve been under different year imprezas.
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Old 02-07-2004, 05:43 PM   #11
I_smoke_hondas
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Quote:
Originally posted by Kostamojen
Yes, the eurathane filled mount made all the difference in the world. It took a week to cool hard enough, but once it did it was as stiff as a rock.
Cool, was putting the urathane in the mount really that tough? I guess if I find a used one I can put it in there and wait with the old one still on the car- it's my only car and I drive it every day. Did you notice any shifer movement under WOT with the old mount? Mine jiggles a little sometimes- mostly when cold though.


Quote:
These older trannys actually sit a little farther forward, and even have different offsets for the flywheel and such. You can visually see the difference when youve been under different year imprezas.
That sux
Does that mean we need different flywheels than are usually offered for Imprezas (ie 2.5s mostly)??
It does seem like having the tranny closer to the motor would make things tigher/more stable...? Does that make sense? It just seems like there would be less stess and leverage from the drive shaft on the entire driveline. Thanks for the good idea though
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Old 02-08-2004, 02:34 AM   #12
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No, it wasnt that hard to put the eurathane in, it was hard finding it though (eventually found it at a NAPA autoparts store) but I did slightly modify the mount so that it would have more room for the eurathane. Cleaned it up too.

But ya, I got a used one and just left it out of the car... This is my only car too, so I had no choice but to do that.
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