Welded tranny crossmember?

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Grayguy
Second Gear
Posts: 392
Joined: Mon Apr 30, 2007 4:26 am

Welded tranny crossmember?

Post by Grayguy »

So I was thinking, why should I bother to buy poly bushings for my tranny crossmember when I could just weld the 3 pieces together as one solid piece. I'd still be using the group N tranny mount to connect the tranny to the, crossmember, and I could still drop the whole unit to be able to drop the tranny. Am I missing something here?
92' SS: SOLD
98' 2.5GT SOLD, bought back, new stupid build in the works.
98' 2.5 GT-rx :bought not built
ericem
Fifth Gear
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Re: Welded tranny crossmember?

Post by ericem »

Don't do that just get the $30 pink bushings and call it a day.
1993 Subaru Legacy L AWD Wagon R.I.P
1994 Subaru Legacy SS R.I.P :(
2004 Nissan Titan LE 4X4
2007 Subaru Legacy GT :)
Grayguy
Second Gear
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Joined: Mon Apr 30, 2007 4:26 am

Welded tranny crossmember?

Post by Grayguy »

Why? What's the difference? From a technical stand point, it seems like it'd be better, maybe even stiffen the chassis slightly.
92' SS: SOLD
98' 2.5GT SOLD, bought back, new stupid build in the works.
98' 2.5 GT-rx :bought not built
ericem
Fifth Gear
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Joined: Mon Oct 16, 2006 9:44 pm
Location: Toronto,ON Canada

Re: Welded tranny crossmember?

Post by ericem »

From my standpoint poly bushings still absorb some noise also if you weld it I doubt the bolts will line up PERFECTLY. Whenever I bolt up the crossmember i need to flex each end slightly to get it to light up with the chassis bolts.
1993 Subaru Legacy L AWD Wagon R.I.P
1994 Subaru Legacy SS R.I.P :(
2004 Nissan Titan LE 4X4
2007 Subaru Legacy GT :)
n2x4
Fourth Gear
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Location: Massillon, Ohio

Re: Welded tranny crossmember?

Post by n2x4 »

I agree, lining those holes up is always a PITA.

I think if you wanted to weld something, you could consider boxing in the transmission mount itself. There's a lot of play to be lost there.
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93forestpearl
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Re: Welded tranny crossmember?

Post by 93forestpearl »

Without a jig, you can be assured to not weld it up straight. Besides, the poly ones probably aren't even necessary. Mine probably weren't. I would worry more about the mounts themselves, among other things.
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Grayguy
Second Gear
Posts: 392
Joined: Mon Apr 30, 2007 4:26 am

Welded tranny crossmember?

Post by Grayguy »

Like I said, I already have groupN mounts for the motor/ tranny, it was just a random idea I had. I'd weld It in the car...but l guess I will just leave it alone.
92' SS: SOLD
98' 2.5GT SOLD, bought back, new stupid build in the works.
98' 2.5 GT-rx :bought not built
biggreen96
Third Gear
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Re: Welded tranny crossmember?

Post by biggreen96 »

Interesting idea. I'm going to look into this. Boxing the trapezoid shaped mount that actually bolts to the trans seems like a interesting idea too. I'm going to play around under there this weekend...
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