Torque box replacement - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1979-1995 Mustang GT



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 01-05-2012, 08:59 AM   #1
Registered Member
Regular
 
LX5011's Avatar
 
Join Date: Nov 2011
Region: Indiana
Posts: 39
Send a message via Yahoo to LX5011
Torque box replacement

I have a 1990 lx with a box that rusted out and split on the driver side. I am unsure of any other damage so far. I have no clue where to start to repair or replace, any suggestions??
LX5011 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-05-2012, 10:09 AM   #2
Registered Member
Regular
 
SleepingStang's Avatar
 
Join Date: Jan 2011
Region: Wisconsin
Posts: 169
This is going to be an advanced repair. Easiest way would be to find a donor torque box and cut out your old one. Careful measurements would need to be taken prior to removal and those measurements applied to the donor piece. A good welding job would also be essential along with some strengthening gussets welded in. Only way to fix rust is to cut it out. Sorry if this isn't the answer you were looking for. If he car is worth it to you then I would take it to a good autobody or frame shop and get an estimate for the work.
SleepingStang is offline   Reply With Quote
Old 01-05-2012, 11:21 AM   #3
Registered Member
Regular
 
LX5011's Avatar
 
Join Date: Nov 2011
Region: Indiana
Posts: 39
Send a message via Yahoo to LX5011
I bought a replacement and reinforcement kit for it. I know it needs cut out and the new one welded in I just am looking for the dos and donts of what to do.
LX5011 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-05-2012, 05:24 PM   #4
Registered Member
Regular
 
WhiteCobra94's Avatar
 
Join Date: Dec 2010
Region: Pennsylvania
Posts: 1,435
What's the Max horsepower and torque the stock torque box can handle?
WhiteCobra94 is offline   Reply With Quote
Old 01-05-2012, 06:27 PM   #5
Registered Member
Regular
 
SleepingStang's Avatar
 
Join Date: Jan 2011
Region: Wisconsin
Posts: 169
I believe that piece is spot welded in with large spot welds. If you want a factory appearance then drill the spots out and weld in the new piece using plug welds to replicate the spots. You can also stitch weld the box on the outer perimeter. Either way weld penetration should be ample, just be sure to remove interior from the weld area due to heat transfer. If you take precise measurements of where the current box is then you should be fine. I am sure you have a small amount of slop in positioning but I wouldn't get away from the measurements too far. Hope this helps.

---------- Post added at 07:27 PM ---------- Previous post was at 07:22 PM ----------

Quote:
Originally Posted by WhiteCobra94
What's the Max horsepower and torque the stock torque box can handle?
I would guess that this depends on if you are drag racing or just a spirited street run from time to time. I have seen 400 RWHP Foxes running unreinforced battle boxes. I probably would not do that as the constant hard take offs that tend to come with high horsepower would take their toll. I think if you are pushing over 300 at the wheels then it's time to think about reinforcements as well as driveline upgrades.
SleepingStang is offline   Reply With Quote
Old 01-05-2012, 06:36 PM   #6
Registered Member
Regular
 
WhiteCobra94's Avatar
 
Join Date: Dec 2010
Region: Pennsylvania
Posts: 1,435
Well my motor is finished I'm in the process of installing it now, new trams is in, I have all new upper and lower control arms , subframes , shocks/struts , once the car gets on the dyno from what everyone is guessing I'll be around 290-320wrhp
WhiteCobra94 is offline   Reply With Quote
Old 01-05-2012, 06:36 PM   #7
Road Trip!
 
Join Date: Apr 2011
Region: Indiana
Posts: 8,044
Quote:
Originally Posted by SleepingStang
I believe that piece is spot welded in with large spot welds. If you want a factory appearance then drill the spots out and weld in the new piece using plug welds to replicate the spots. You can also stitch weld the box on the outer perimeter. Either way weld penetration should be ample, just be sure to remove interior from the weld area due to heat transfer. If you take precise measurements of where the current box is then you should be fine. I am sure you have a small amount of slop in positioning but I wouldn't get away from the measurements too far. Hope this helps.

---------- Post added at 07:27 PM ---------- Previous post was at 07:22 PM ----------



I would guess that this depends on if you are drag racing or just a spirited street run from time to time. I have seen 400 RWHP Foxes running unreinforced battle boxes. I probably would not do that as the constant hard take offs that tend to come with high horsepower would take their toll. I think if you are pushing over 300 at the wheels then it's time to think about reinforcements as well as driveline upgrades.
^ well said
dreamstang is offline   Reply With Quote
Old 01-06-2012, 12:22 AM   #8
Registered Member
Regular
 
LX5011's Avatar
 
Join Date: Nov 2011
Region: Indiana
Posts: 39
Send a message via Yahoo to LX5011
Yeah that does a help quite a bit actually however my motor is pretty much stock except for a few things and I managed to twist both of them off on each side ( just noticed the other side). Id say if your looking for any real power id go the safe route and reinforce them. A lot easier then replacing in my opinion
LX5011 is offline   Reply With Quote
Old 01-06-2012, 11:34 AM   #9
Road Trip!
 
Join Date: Jul 2011
Posts: 278
Sorry but the what h@ll is. Torque box
tbonestang is offline   Reply With Quote
Old 01-06-2012, 11:36 AM   #10
Registered Member
Regular
 
LX5011's Avatar
 
Join Date: Nov 2011
Region: Indiana
Posts: 39
Send a message via Yahoo to LX5011
The box on your frame that cases the lower control arm
LX5011 is offline   Reply With Quote
Old 01-06-2012, 01:08 PM   #11
Registered Member
Regular
 
stampde's Avatar
 
Join Date: Oct 2010
Location: Manalapan
Region: New Jersey
Posts: 1,880
Re: Torque box replacement

Wild Rides' Battle Boxes - How To - 5.0 Mustang & Super Fords Magazine
THIS ABOUT COVERS IT
__________________
2011 GT Auto
stampde is offline   Reply With Quote
Old 01-08-2012, 03:05 PM   #12
Registered Member
Regular
 
LX5011's Avatar
 
Join Date: Nov 2011
Region: Indiana
Posts: 39
Send a message via Yahoo to LX5011
New question guys, my lower control arm on the driver side has pushed into my torque box. How bad is that?
LX5011 is offline   Reply With Quote
Old 01-08-2012, 08:52 PM   #13
Road Trip!
Supporter
 
Join Date: Jun 2006
Region: Missouri
Posts: 8,779
Re: Torque box replacement

Quote:
Originally Posted by LX5011 View Post
New question guys, my lower control arm on the driver side has pushed into my torque box. How bad is that?
That's not good.
Your rear end is probably a bit crooked.
You should get it fixed ASAP.

P.S. I completely removed and rebuilt my PS torque box out of 3/16" steel and tied it solidly into the rocker panel.
I still have to finish the DS when I can.
Trojan Horse is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1979-1995 Mustang GT

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Torque Converter WhiteCobra94 1979-1995 Mustang GT 4 12-28-2011 11:47 AM
Torque Converter ? WhiteCobra94 1979-1995 Mustang GT 6 12-07-2011 07:45 PM
My Side Mirror Broke Off and Now I Need Advice Regarding Replacement JimHyde 1996-2004 Mustang GT 3 12-03-2011 09:16 PM
Just bought Mach 460 Amp/speaker box... 1 problem though' Black_Sunshine Pre-2005 V6 Mustang 0 10-16-2011 06:42 PM
torque converter access plug? shustwit Pre-2005 V6 Mustang 0 07-03-2011 08:44 AM

» Like Us On Facebook



12:04 AM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.