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Suspension Standard length sfc vs full length

  • Thread starter Thread starter derek1993
  • Start date Start date Feb 23, 2021
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    subframe connectors
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derek1993

Active Member
Sep 13, 2020
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Thompson's Station, TN
Feb 23, 2021
#1
  • Feb 23, 2021
  • #1
1993 lx convertible
Already have standard length sfc welded in (round - done by previous owner). Worth it to remove and replace with full length?
Side question, any requirements for a project/build thread? (Besides the obvious)
Thanks
 

jozsefsz

15 Year Member
Aug 11, 2013
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Cleveland OH Area
Feb 24, 2021
#2
  • Feb 24, 2021
  • #2
This wound up in 94-95 specific tech where you won't get much help for a Fox. Hopefully one of our good mods will move it.
 
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derek1993

Active Member
Sep 13, 2020
162
79
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Thompson's Station, TN
Feb 24, 2021
#3
  • Feb 24, 2021
  • #3
jozsefsz said:
This wound up in 94-95 specific tech where you won't get much help for a Fox. Hopefully one of our good mods will move it.
Click to expand...
Well crap, not sure how i managed that.. thanks for the assist.
 

JD1964

there is enough sticking out to grab on to
15 Year Member
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Feb 24, 2021
#4
  • Feb 24, 2021
  • #4
Convertible needs all the help it can get stiffening up the body since there's no roof structure to hold things together. I say go full length MM. They also have the bracket's that stabilize the seats. Convertible is also supposed to have a crossbar that goes from the radiator support to the k-member and further back to body under the foot well. Also, make sure nobody removed the front bumper support that goes under the bumper cover. People strip all kinds of important things to try and loose weight. They ruin a car for minimal gains in weight loss. It gets quite silly
 
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mikestang63

SN Certified Technician
Aug 27, 2012
11,606
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In the garage
Feb 24, 2021
#5
  • Feb 24, 2021
  • #5
I've put these on every fox body I've owned. Just bought another set for the 86 from LMR

 
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derek1993

Active Member
Sep 13, 2020
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Thompson's Station, TN
Feb 24, 2021
#6
  • Feb 24, 2021
  • #6
Thanks all, ordered a set today and on their way. Actually got news that parts I ordered from MM last month are being shipped. Pretty stoked for those to show up soon.
 
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Cheapskate207

The left one hangs a little lower
5 Year Member
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Feb 25, 2021
#7
  • Feb 25, 2021
  • #7
If you could, please update this thread. I contemplated doing the same swap in my coupe but decided against it. I’d be interested in hearing your results.
 

JD1964

there is enough sticking out to grab on to
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Feb 25, 2021
#8
  • Feb 25, 2021
  • #8
Cheapskate207 said:
If you could, please update this thread. I contemplated doing the same swap in my coupe but decided against it. I’d be interested in hearing your results.
Click to expand...
I'll tell you what I noticed after installing full length sub frame connectors. Before installing them, when the rear tires would loose traction under power, the rear end would usually kick to one side as the wheels were spinning. With the subs installed, the rear tendency to kick to the side is substantially reduced. To me it indicates the more rigid body structure is not flexing as much under power. It will still break traction but when it does, it definitely tracks straighter.
 

Cheapskate207

The left one hangs a little lower
5 Year Member
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Feb 25, 2021
#9
  • Feb 25, 2021
  • #9
Is that a switch from standard length to full length?
 

JD1964

there is enough sticking out to grab on to
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Feb 25, 2021
#10
  • Feb 25, 2021
  • #10
Cheapskate207 said:
Is that a switch from standard length to full length?
Click to expand...
No, from none at all to full length
 

limp

wrap a little cheese around it and its a done
5 Year Member
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#11
  • Mar 4, 2021
  • #11
Would it be best to have all of the drivetrain in the car before installing SFC's? My engine/transmission is out and I wonder if the lack of there installed weight would "tweak" the car differently for the weld in?
Second question... I would think the powdercoated SFC's would be ruined after welding them in?? Any experience or recommendations to go plain or Powdercoated??
 

Cheapskate207

The left one hangs a little lower
5 Year Member
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Mar 4, 2021
#12
  • Mar 4, 2021
  • #12
I’m not sure about having the drive train out. I would suspect it doesn’t matter, providing you have the kmember and trans crossmember installed and the weight on the suspension.

I wouldn’t worry about the powder coat. You’ll have already ground it off for welding. Not to mention you’ll need to paint the welds anyway so it’s not a big deal. MM is the preferred brand around here. Also check out stifflers. They’re similar and have masked off areas for welding.
 

limp

wrap a little cheese around it and its a done
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#13
  • Mar 4, 2021
  • #13
Cheapskate207 said:
I’m not sure about having the drive train out. I would suspect it doesn’t matter, providing you have the kmember and trans crossmember installed and the weight on the suspension.

I wouldn’t worry about the powder coat. You’ll have already ground it off for welding. Not to mention you’ll need to paint the welds anyway so it’s not a big deal. MM is the preferred brand around here. Also check out stifflers. They’re similar and have masked off areas for welding.
Click to expand...
So the welding would only effect the actual areas that your welding and the rest of the Powdercoat should be OK? ( Not a welder here)....
 

Cheapskate207

The left one hangs a little lower
5 Year Member
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Mar 4, 2021
#14
  • Mar 4, 2021
  • #14
Yes, that is correct. I am not a welder either.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
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Massachusetts
Mar 4, 2021
#15
  • Mar 4, 2021
  • #15
You want the full weight of the car on the suspension when you weld these in
 
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limp

wrap a little cheese around it and its a done
5 Year Member
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#16
  • Mar 4, 2021
  • #16
Mustang5L5 said:
You want the full weight of the car on the suspension when you weld these in
Click to expand...
So these can be installed no problem with the entire car assembled and running?
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,179
17,881
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Massachusetts
Mar 4, 2021
#17
  • Mar 4, 2021
  • #17
limp said:
So these can be installed no problem with the entire car assembled and running?
Click to expand...

yes, they are routinely installed on fully running cars. You might want to pull seats/carpet however as the floor heats up during welding
 
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General karthief

wonder how much it would cost to ship you a pair
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polk county florida
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#18
  • Mar 4, 2021
  • #18
Let's get an observer 's view.
Hang'n round the shop as I do (mustly 'cause they ain't lettin me touch tools, for some reason that particular wrench is missing the day after I use it) for too many years I have witnessed 'cooter' weld on cars with full interior and only once there was smouldering carpet, but gone unnoticed could have been a disaster.
I can dig the ice bag trick, I bet a good welder would only use one bag with enough left for martinis. Better safe than an insurance claim.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,179
17,881
224
Massachusetts
Mar 5, 2021
#19
  • Mar 5, 2021
  • #19
The pass side rail also abuts the fuel line, so care will need to be taken to protect the line and prevent it from seeing heat.
 
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silverlx50

15 Year Member
Apr 4, 2007
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Apr 28, 2021
#20
  • Apr 28, 2021
  • #20
My MM full length welded connectors are close to the coolest mod for my vert. Car feels super solid and it's nice to be able to put a jack under them. Completely different feel. Mine were installed last year on a '93 that probably has 195k miles on the body.
 
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