IRS question...
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Elder User
Joined: Jan 2007
Posts: 789
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From: MI..."near" Dearborn...
IRS question...
...I found a dude locally sellin' a 1999 Cobra complete IRS, except for shocks...
He replaced the IRS with a solid rear due to the fact Cobrs run's in the NINES!!!
Anyway...I was wondering IF anyone has tried this swap in a '56 effie???
He's lettin' it go CHEAP...
He replaced the IRS with a solid rear due to the fact Cobrs run's in the NINES!!!
Anyway...I was wondering IF anyone has tried this swap in a '56 effie???
He's lettin' it go CHEAP...
Posting Guru
Joined: Jul 2007
Posts: 2,344
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From: I live in Leitchfield, KY
The bolt circle is 5 on 4 1/2" the normal gear ratio is 3:73's I'll have to measure mine to see what the width is. We're building a '68 Mustang for a buddy of mine (check my gallery, it's pretty radical) we're not fortunate enough to have a cobra rear, but the track width should be the same as a solid axle? I'll check. I do know they are similar to the Cougar and T-bird IRS units, but I dont think the width is the same, but on the plus side is the bolt circle. Like I said it's a 4 1/2" bolt circle NOT like the T-bird which is 5 on 4 1/4" a real ODDBALL boltpattern.
I say BUY IT!!!!!
I say BUY IT!!!!!
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Joined: Jul 2006
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From: Westminster,Md
Whoa!,..LoL..I've already got my hands full,one project at a time!..
Might make a good swap for somebody else though,
All Ford pieces would be cool!..and some bragging rights to boot!
Truxx, what would that width be? Flange to Flange?
Might make a good swap for somebody else though,
All Ford pieces would be cool!..and some bragging rights to boot!
Truxx, what would that width be? Flange to Flange?
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From: San Diego CA
Posting Guru
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From: Westminster,Md
I checked that site; installation looks kinda like the Volare..notch the frame ,plenty of clearence on the wheels,..but no idea what the backspace on the wheels is.
Pretty BIG looking too, ride HT looks good though.
Maybe I'm just more of a traditionalist, but I'll stick with the straight axle. I'ts still gotta look cool.
Pretty BIG looking too, ride HT looks good though.
Maybe I'm just more of a traditionalist, but I'll stick with the straight axle. I'ts still gotta look cool.
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From: Adams,CO.
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Posting Guru
Joined: Jul 2006
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From: Westminster,Md
Thank's Jon, thats alot of reading for my blurry eyes at this time of nite (10 pm est), but i'llget a chance soon enough,
got two of my questions answered though ,pinion angle adjuustment and track width
Thank's again!!
got two of my questions answered though ,pinion angle adjuustment and track width
Thank's again!!
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Thread Starter
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Elder User
Joined: Jan 2007
Posts: 789
Likes: 2
From: MI..."near" Dearborn...
'56 effie & cobra irs
The 1999 Cobra IRS I was lookin' at seems like a good deal at $400.00
minus shocks...gotta make a decision before it's gone...
Seems like a pretty straight forward install..all things considered...
I wonder if MIG welding would be sufficient and structurally robust enough
to secure this setup???
OR...could just arc it...any thoughts???
-Thanks...
minus shocks...gotta make a decision before it's gone...
Seems like a pretty straight forward install..all things considered...
I wonder if MIG welding would be sufficient and structurally robust enough
to secure this setup???
OR...could just arc it...any thoughts???
-Thanks...
Elder User
Joined: Jun 2004
Posts: 800
Likes: 6
From: Edmonton, Alberta Canada
depends on how good of a welder you are with a Mig.
problem with Mig welding is that you can get a condition known as cold fusion where the weld looks all nice and pretty but the penetration is not deep enough so the weld is week. main reason they don't allow mig welding on pressure vessels (at least in Alberta).
if you are a good mig welder or know someone who is, Mig welds are just as strong as arc welding with less heat distortion and weld contamination.
welding in any suspension component should be done by qualified welders only, don't want to be running down the road, hit a bump or pothole and have your rear end break away at 60mph. wouldn't be pretty.
and $400 for a Cobra IRS is a steal. even if you don't use it, grab it anyways. they usually go for a lot more than that used. pretty rare piece.
rgds
Mike
problem with Mig welding is that you can get a condition known as cold fusion where the weld looks all nice and pretty but the penetration is not deep enough so the weld is week. main reason they don't allow mig welding on pressure vessels (at least in Alberta).
if you are a good mig welder or know someone who is, Mig welds are just as strong as arc welding with less heat distortion and weld contamination.
welding in any suspension component should be done by qualified welders only, don't want to be running down the road, hit a bump or pothole and have your rear end break away at 60mph. wouldn't be pretty.
and $400 for a Cobra IRS is a steal. even if you don't use it, grab it anyways. they usually go for a lot more than that used. pretty rare piece.
rgds
Mike
Posting Guru
Joined: Jul 2007
Posts: 2,344
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From: I live in Leitchfield, KY
Originally Posted by rockher_man
The 1999 Cobra IRS I was lookin' at seems like a good deal at $400.00
minus shocks...gotta make a decision before it's gone...
Seems like a pretty straight forward install..all things considered...
I wonder if MIG welding would be sufficient and structurally robust enough
to secure this setup???
OR...could just arc it...any thoughts???
-Thanks...
minus shocks...gotta make a decision before it's gone...
Seems like a pretty straight forward install..all things considered...
I wonder if MIG welding would be sufficient and structurally robust enough
to secure this setup???
OR...could just arc it...any thoughts???
-Thanks...
MAN!! What a deal!!!! $400 that's cheap!!!! I wouldn't take that for mine out of a '92 Cougar! As far as the welding goes, I'd rather MIG it than stick it. That's a very good deal! I havent measured the width yet on our mustang, but I do know that the '99 up Mustangs were 1 1/2" wider than the '94 to ' 98 body styles.
Postmaster
Joined: Aug 2003
Posts: 4,172
Likes: 1
From: Oakdale,Ca.
Originally Posted by Truxx1956
MAN!! What a deal!!!! $400 that's cheap!!!! I wouldn't take that for mine out of a '92 Cougar! .
Thread Starter
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Elder User
Joined: Jan 2007
Posts: 789
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From: MI..."near" Dearborn...
IRS & welding
Originally Posted by mcdonaldm
depends on how good of a welder you are with a Mig.
problem with Mig welding is that you can get a condition known as cold fusion where the weld looks all nice and pretty but the penetration is not deep enough so the weld is week. main reason they don't allow mig welding on pressure vessels (at least in Alberta).
if you are a good mig welder or know someone who is, Mig welds are just as strong as arc welding with less heat distortion and weld contamination.
welding in any suspension component should be done by qualified welders only, don't want to be running down the road, hit a bump or pothole and have your rear end break away at 60mph. wouldn't be pretty.
and $400 for a Cobra IRS is a steal. even if you don't use it, grab it anyways. they usually go for a lot more than that used. pretty rare piece.
rgds
Mike
problem with Mig welding is that you can get a condition known as cold fusion where the weld looks all nice and pretty but the penetration is not deep enough so the weld is week. main reason they don't allow mig welding on pressure vessels (at least in Alberta).
if you are a good mig welder or know someone who is, Mig welds are just as strong as arc welding with less heat distortion and weld contamination.
welding in any suspension component should be done by qualified welders only, don't want to be running down the road, hit a bump or pothole and have your rear end break away at 60mph. wouldn't be pretty.
and $400 for a Cobra IRS is a steal. even if you don't use it, grab it anyways. they usually go for a lot more than that used. pretty rare piece.
rgds
Mike
THANKS!...very good point...Oh yeah...I CAN weld...schooled & trained...
But JUST before finsihing my certification pieces & sending them in to be cut apart I was diagnosed and had to stop...seems heat and MS do not go together wery well!
Anyway...I do understand weld integrety & robustness...just looking for some opinions..
Besides...my welding instructor is a 15+ year journyman welder from the
"Rouge Plant" and has offeren up his assistance & skills IF needed...so I think I'm covered...
-Thanks again...
