Torque Arm questions - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 26 Old 11-17-2005, 09:19 AM Thread Starter
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Torque Arm questions

How many of you guys have a HD TA compared to the standard. Do I really need a HD TA? It looks like I can install the regular TA fine, but the HD requires too much cutting and welding.

My car put out about 425 rwtq right now.


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post #2 of 26 Old 11-17-2005, 09:56 AM Thread Starter
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Nevermind I found my answer. On that

Any of you guys that have a HD TA did you have to cut up your X or H pipe to extend it?


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post #3 of 26 Old 11-17-2005, 10:17 AM
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It's the HD mount that requires extending the H/X pipes, not the t/a itself. Not a big deal for any competent muffler shop. But if you change your H or X or tailpipes later, you will have to do it again to the new pieces. BTDT.

IIRC the HD mount makes transmission removal easier.

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post #4 of 26 Old 11-17-2005, 04:19 PM
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I have the MM HD TA and I had to have my X-pipe modified to clear it. I'm hoping to be pushing around 500 rwtq (it's rated for 550 lb-ft engine torque) pretty soon with 4.10 gears but hopefully the tall 1st in the T-56 will help it survive.

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post #5 of 26 Old 11-18-2005, 12:56 PM
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I have the MM HD TA also. The x-pipe was slightly modified. 2inches at most, was added. I didn't do the install....

1993 GT 310rwhp / 351rwtq
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post #6 of 26 Old 11-18-2005, 11:19 PM
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What is the big difference between the two? Can the regular ta be modified to handle the same torque as the HD ta?
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post #7 of 26 Old 11-19-2005, 11:12 AM Thread Starter
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I think the TA cross member is the difference.

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post #8 of 26 Old 11-19-2005, 11:27 AM
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Quote:
Originally Posted by jeostang
I think the TA cross member is the difference.

The HD mount and the HD t/a are both different and interchangeable. E.g., I have the standard t/a and the HD mount.

easterisland - The HD t/a is considerably different from the standard. It's probably easier to sell it and get a new HD one, but you can call or e-mail MM. Thay are usually very helpful.

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post #9 of 26 Old 11-19-2005, 08:59 PM
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n/m

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Last edited by svtruck; 11-20-2005 at 10:22 AM.
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post #10 of 26 Old 11-19-2005, 09:08 PM Thread Starter
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You wouldn't happen to be selling that?? lol

How was the install on that?


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post #11 of 26 Old 11-19-2005, 09:19 PM
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Quote:
Originally Posted by jeostang
How was the install on that?
Don't ask, I believe it's still lying there where he took the picture!
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post #12 of 26 Old 11-19-2005, 09:22 PM
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Mine looks exactly like that picture (mine is fully boxed and brackets look just like those). The only thing which isn't boxed on mine and I can't tell from that pic is the bar which ties the subframes together. According to the invoice I received almost 2 years ago I received the standard torque arm...
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post #13 of 26 Old 11-19-2005, 09:25 PM
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Quote:
Originally Posted by svtruck
If you autox, and as Glenn will tell you, the cross brace bumps you out of ESP into CP because it ties the left and right sub frames together.
Actually, the MM SFC's bumped me from ESP to SM.

The TA mount and MM K-member bumped me from SM to CP.
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post #14 of 26 Old 11-19-2005, 11:03 PM
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Quote:
Originally Posted by Glenn
Don't ask, I believe it's still lying there where he took the picture!
You know that's the truth...can't weld, don't have a lift!

ESP -> SM -> CP -> SCCA really picks on Mustang owners don't they?

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post #15 of 26 Old 11-19-2005, 11:07 PM
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Quote:
Originally Posted by easterisland
Mine looks exactly like that picture (mine is fully boxed and brackets look just like those). The only thing which isn't boxed on mine and I can't tell from that pic is the bar which ties the subframes together. According to the invoice I received almost 2 years ago I received the standard torque arm...
Hmmm...I seem to remember Jack Hidley from MM commenting on a previous post asking about the differences between the two...and going by his comments it seemed the one I have is a HD unit. I bought it used from Dugan Racing...so I'm not positive. The cross brace isn't technically boxed in but it is substantially gusseted. The whole thing feels and looks beefy as hell...maybe Glenn can comment since he actually has one on his car.

Not that this thing is going to be installed anytime soon...but I will be putting down quite a bit of torque and I have 4.10 gears so it is important that I have the correct part so I don't break it.

'05 STi
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post #16 of 26 Old 11-19-2005, 11:36 PM
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I haven't broke mine, but I only have 3.27 gears and low 11's in the quarter mile at nearly 127 mph. Which should put me at somewhere around 550 hp and probably more torque than that with the turbo and all.
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post #17 of 26 Old 11-20-2005, 12:54 AM
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The HD TA comes with a front crossmember that has four sides (boxed). The standard TA comes with a front crossmember that only has three sides (no bottom). Also the front and rear plates on the HD crossmember are both flat. On the standard TA, one of the plates is flat and the other has an offset (jog) in it. The photo that svtruck posted is definitely of a TA with a standard crossmember. From the photo, I can't tell if the TA is an HD or standard. The easiest way to tell is by checking the diameter of the bolts that hold the TA legs to the front of the differential housing. The HD uses 1/2" bolts, the standard uses 3/8" bolts.

There are many small differences between the standard and HD TAs. It's not possible to turn one of them into the other.

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post #18 of 26 Old 11-20-2005, 08:41 AM
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Thanks for that information. Do you guys have anything more heavy duty than the hd ta?
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post #19 of 26 Old 11-20-2005, 10:15 AM
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Quote:
Originally Posted by svtruck
If you autox, and as Glenn will tell you, the cross brace bumps you out of ESP into CP because it ties the left and right sub frames together.

True, unless you use the Ford TSB subframe connectors. Then you are legal in ESP since TSB changes are considered factory parts (You can even run the TSB sfc's in F Stock on a '96-'98 convertible).

I did this after confirming with MM that those sfc's would be adequate for t/a mounting. No problems and still in ESP.

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post #20 of 26 Old 11-20-2005, 10:26 AM
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Quote:
Originally Posted by Jack Hidley
The HD TA comes with a front crossmember that has four sides (boxed). The standard TA comes with a front crossmember that only has three sides (no bottom). Also the front and rear plates on the HD crossmember are both flat. On the standard TA, one of the plates is flat and the other has an offset (jog) in it. The photo that svtruck posted is definitely of a TA with a standard crossmember. From the photo, I can't tell if the TA is an HD or standard. The easiest way to tell is by checking the diameter of the bolts that hold the TA legs to the front of the differential housing. The HD uses 1/2" bolts, the standard uses 3/8" bolts.

There are many small differences between the standard and HD TAs. It's not possible to turn one of them into the other.
Well, I was mis-informed then by the seller I bought this from...this one is definitely a standard TA, the bolt holes are 3/8" and the cross brace is not fully boxed and has the jog in it. Disappointing, but I guess I'll putting this one up for sale...anyone interested?

I also deleted my previous post so squelch any confusion in the future...

'05 STi
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post #21 of 26 Old 11-20-2005, 11:06 AM
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Were do the ta's break? For the $ price difference I might try to strengthen my standard ta. Especially if the arm are the same specs except the tapered end.
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post #22 of 26 Old 11-20-2005, 02:41 PM Thread Starter
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Quote:
Originally Posted by Jack Hidley
The HD TA comes with a front crossmember that has four sides (boxed). The standard TA comes with a front crossmember that only has three sides (no bottom). Also the front and rear plates on the HD crossmember are both flat. On the standard TA, one of the plates is flat and the other has an offset (jog) in it. The photo that svtruck posted is definitely of a TA with a standard crossmember. From the photo, I can't tell if the TA is an HD or standard. The easiest way to tell is by checking the diameter of the bolts that hold the TA legs to the front of the differential housing. The HD uses 1/2" bolts, the standard uses 3/8" bolts.

There are many small differences between the standard and HD TAs. It's not possible to turn one of them into the other.
Hey Jack thanx for the info. Are the pictures in the MM directions for the standard and the HD TA the same? I did notice were the bolts are 3/8th inch compared to the 1/2bolts in the HD instructions, but the cross member pics both look the same. I'm just trying to get a good picture of the HD crossmember. Thanx.

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post #23 of 26 Old 11-21-2005, 07:57 AM
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In addition to the crossmember differences, I believe the depth (top to bottom) of the actual arm is a little higher on the HD unit, too.
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post #24 of 26 Old 11-21-2005, 11:24 PM
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I can't post pics here, but this link will take you to some pics of the HD torque arm on my 96. http://www.streetcarforums.com/showt...ght=torque+arm
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post #25 of 26 Old 11-22-2005, 08:18 AM Thread Starter
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Nice setup, did they have to cut the Dr X pipe up to install the TA.

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post #26 of 26 Old 11-22-2005, 02:13 PM
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Dr Gas comes in pieces so it was welded up after the TA was put in. Since those pictures, I had the pipe modified again so that I could run tailpipes and mufflers.

My suggestion to anyone doing the heavy duty TA would be to NOT buy a prefab H or X pipe and just have the muffler shop make what you need. It will be cheaper and just as good if you use a decent shop. I ended up with a modified catback and a modified crossover pipe.
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