Track Pack Spring Rates
Thread Starter
V6 Member
Joined: May 6, 2012
Posts: 79
Likes: 0
From: Austin, TX
Track Pack Spring Rates
Now, I've seen the Brembo Package spring rates posted plenty. However, the Track Pack has become available since most of that info has gone around. Can anyone confirm if the Track Pack springs are identical to those used on the Brembo Brake only cars? I haven't seen the TP specifically mentioned only references to the Brembos.
I wouldn't be surprised if they were the same, then again, I almost expect them to be tweaked some too. There is some suggestion, in a thread further down, that the Track Pack cars *appear* to sit lower in the rear which would suggest a spring change.
Thanks,
Morgan
I wouldn't be surprised if they were the same, then again, I almost expect them to be tweaked some too. There is some suggestion, in a thread further down, that the Track Pack cars *appear* to sit lower in the rear which would suggest a spring change.
Thanks,
Morgan
V6 Member
Joined: February 25, 2011
Posts: 70
Likes: 0
From: So-Cal
I don't know about the track pack yet, however, the correct spring rate for Brembo Mustangs (2011-2012) are:
Front: 131 lbs
Rear: 167 lbs
These rates have been tested by me and verified from factory Ford Blueprints used to develop my rear 55D Spring kit.
Mach 1 Member
Joined: July 16, 2010
Posts: 864
Likes: 2
Spring.......... ……..F Type...... F Rate ...R Type ......R Rate
OEM:
GT ................................L ...............165............L................... .142*
05-09
GT Vert..........................L ...............144................L...............122*
05-09
GT500 ............................L ..............190.............L...................166*
07-09
GT/V6 .............................L ..............154.............L...................122****
07-09
GT/GT Vert Brembo ...........L .............167.............L...................131***
2011-12
Boss 302………………………………L…………….186……………..L……………………..148** *
2012
Boss 302LS…………………………L…………….191……………..L……………………..137***
2012
Aftermarket:
H&R Supersport.................P. ............?-275 ...........P ................?-245****
Steeda Ultralights ……………..L ...............195 ............L ...................175**/***
Steeda Sport ...................L ...............200 .............L ...................175**/***
Steeda Comp ..................L ...............225 .............L ...................185**/***
FFRP K Springs* .............P ............173-239 .........P ..............195-236*
Ebach Pro* ....................P ............173-239 .........P ..............195-236***
Ebach Sportline ..............L .........Way Too Stiff, FOR RACE USE ONLY!!
BMR (pn SP009) .............P ..........165……............ L ..................160***
*- tested and confirmed by self
**- tested and confirmed by someone else (could be suspect)
***-manufacturer published numbers
****-picked up off of web (could be suspect)
OEM:
GT ................................L ...............165............L................... .142*
05-09
GT Vert..........................L ...............144................L...............122*
05-09
GT500 ............................L ..............190.............L...................166*
07-09
GT/V6 .............................L ..............154.............L...................122****
07-09
GT/GT Vert Brembo ...........L .............167.............L...................131***
2011-12
Boss 302………………………………L…………….186……………..L……………………..148** *
2012
Boss 302LS…………………………L…………….191……………..L……………………..137***
2012
Aftermarket:
H&R Supersport.................P. ............?-275 ...........P ................?-245****
Steeda Ultralights ……………..L ...............195 ............L ...................175**/***
Steeda Sport ...................L ...............200 .............L ...................175**/***
Steeda Comp ..................L ...............225 .............L ...................185**/***
FFRP K Springs* .............P ............173-239 .........P ..............195-236*
Ebach Pro* ....................P ............173-239 .........P ..............195-236***
Ebach Sportline ..............L .........Way Too Stiff, FOR RACE USE ONLY!!
BMR (pn SP009) .............P ..........165……............ L ..................160***
*- tested and confirmed by self
**- tested and confirmed by someone else (could be suspect)
***-manufacturer published numbers
****-picked up off of web (could be suspect)
V6 Member
Joined: February 25, 2011
Posts: 70
Likes: 0
From: So-Cal
I see you listed a bunch of other spring rates that having nothing to do with the BREMBO SPRING RATES we were discussing, other then 1 which are the same numbers I already told you there were, of which you said I was wrong.
SO I GUESS THIS MEANS THAT YOU FINALLY SEE THAT MY NUMBERS ARE RIGHT AFTER ALL?
Here is my Ford Blueprint Info that comes from Ford directly:
The Brembo is 29.2 N/mm Rates ( SGR GREEN SPRING on CHART)
Newton is a unit of force.
lb/in is a an english unit of spring rate.
If you mean Newtons per milimeter (metric units springrate) then the conversion is as follows:
1 N/mm = 5.710146 lb/in
Therefore 29.2 N/mm = 167 ft/lbs.
Case closed. I'm not trying to be a jerk, it's just that everyone is entitled to an opinion, but making a "statement" should be a verified fact, so that others who do not know are given the truth to work with.
SO I GUESS THIS MEANS THAT YOU FINALLY SEE THAT MY NUMBERS ARE RIGHT AFTER ALL?
Here is my Ford Blueprint Info that comes from Ford directly:
The Brembo is 29.2 N/mm Rates ( SGR GREEN SPRING on CHART)
Newton is a unit of force.
lb/in is a an english unit of spring rate.
If you mean Newtons per milimeter (metric units springrate) then the conversion is as follows:
1 N/mm = 5.710146 lb/in
Therefore 29.2 N/mm = 167 ft/lbs.
Case closed. I'm not trying to be a jerk, it's just that everyone is entitled to an opinion, but making a "statement" should be a verified fact, so that others who do not know are given the truth to work with.
Last edited by Bucephalus; Jun 23, 2012 at 05:10 PM.
Bullitt Member
Joined: September 9, 2011
Posts: 383
Likes: 0
From: Madison, WI
Originally Posted by Bucephalus
I see you listed a bunch of other spring rates that having nothing to do with the BREMBO SPRING RATES we were discussing, other then 1 which are the same numbers I already told you there were, of which you said I was wrong.
SO I GUESS THIS MEANS THAT YOU FINALLY SEE THAT MY NUMBERS ARE RIGHT AFTER ALL?
Here is my Ford Blueprint Info that comes from Ford directly:
The Brembo is 29.2 N/mm Rates ( SGR GREEN SPRING on CHART)
Newton is a unit of force.
lb/in is a an english unit of spring rate.
If you mean Newtons per milimeter (metric units springrate) then the conversion is as follows:
1 N/mm = 5.710146 lb/in
Therefore 29.2 N/mm = 167 ft/lbs.
Case closed. I'm not trying to be a jerk, it's just that everyone is entitled to an opinion, but making a "statement" should be a verified fact, so that others who do not know are given the truth to work with.
SO I GUESS THIS MEANS THAT YOU FINALLY SEE THAT MY NUMBERS ARE RIGHT AFTER ALL?
Here is my Ford Blueprint Info that comes from Ford directly:
The Brembo is 29.2 N/mm Rates ( SGR GREEN SPRING on CHART)
Newton is a unit of force.
lb/in is a an english unit of spring rate.
If you mean Newtons per milimeter (metric units springrate) then the conversion is as follows:
1 N/mm = 5.710146 lb/in
Therefore 29.2 N/mm = 167 ft/lbs.
Case closed. I'm not trying to be a jerk, it's just that everyone is entitled to an opinion, but making a "statement" should be a verified fact, so that others who do not know are given the truth to work with.
GT Member
Joined: June 26, 2011
Posts: 144
Likes: 1
I see you listed a bunch of other spring rates that having nothing to do with the BREMBO SPRING RATES we were discussing, other then 1 which are the same numbers I already told you there were, of which you said I was wrong.
SO I GUESS THIS MEANS THAT YOU FINALLY SEE THAT MY NUMBERS ARE RIGHT AFTER ALL?
Here is my Ford Blueprint Info that comes from Ford directly:
The Brembo is 29.2 N/mm Rates ( SGR GREEN SPRING on CHART)
Newton is a unit of force.
lb/in is a an english unit of spring rate.
If you mean Newtons per milimeter (metric units springrate) then the conversion is as follows:
1 N/mm = 5.710146 lb/in
Therefore 29.2 N/mm = 167 ft/lbs.
Case closed. I'm not trying to be a jerk, it's just that everyone is entitled to an opinion, but making a "statement" should be a verified fact, so that others who do not know are given the truth to work with.
SO I GUESS THIS MEANS THAT YOU FINALLY SEE THAT MY NUMBERS ARE RIGHT AFTER ALL?
Here is my Ford Blueprint Info that comes from Ford directly:
The Brembo is 29.2 N/mm Rates ( SGR GREEN SPRING on CHART)
Newton is a unit of force.
lb/in is a an english unit of spring rate.
If you mean Newtons per milimeter (metric units springrate) then the conversion is as follows:
1 N/mm = 5.710146 lb/in
Therefore 29.2 N/mm = 167 ft/lbs.
Case closed. I'm not trying to be a jerk, it's just that everyone is entitled to an opinion, but making a "statement" should be a verified fact, so that others who do not know are given the truth to work with.
I can say the chart is correct, at least for my car (2012 GT w/ 19" prem wheels, non brembo). I checked the rear spring part tag, and it is Tan, SDR, with numbers matching the chart.
That a given, now, I too am in a state of spring question. I bascially love the ride of my car, but hate how much it pitches (nose up/dive...rear squat). It's also a bit jumpy when thrown into a tight curve on a bumpy road. When I test drove brembo cars, I thought the ride was jiggly, and did not want that. I'd be ok with a 1" drop, but would only want a minor sacrifice in ride quality.
I'm lookng into new springs and shocks/struts now. . . ...but am nervous about a change.
TT
Legacy TMS Member
Joined: August 7, 2011
Posts: 5,246
Likes: 567
From: NC
I'm highly interested in lowering at least the rear of my high-riding 'stang, and the 55D kit sounds like what I'd want ...
Anybody on here have pics and more reviews on it other than what I can find on their site?
Anybody on here have pics and more reviews on it other than what I can find on their site?
Bullitt Member
Joined: May 31, 2011
Posts: 212
Likes: 0
From: Jax, FL
My question is.
which rates are front which are rear.. I think thats the confusion.
908s info says the fronts are 167 ft lbs
Your post says the rears are.
I cant tell by your chart. I only see one chart. so I dont know what the other one says.
which rates are front which are rear.. I think thats the confusion.
908s info says the fronts are 167 ft lbs
Your post says the rears are.
I cant tell by your chart. I only see one chart. so I dont know what the other one says.
GT Member
Joined: June 26, 2011
Posts: 144
Likes: 1
I think 908s chart is just captioned backwards, that's all.
V6 Member
Joined: February 25, 2011
Posts: 70
Likes: 0
From: So-Cal
Originally Posted by Ordie
My question is.
which rates are front which are rear.. I think thats the confusion.
908s info says the fronts are 167 ft lbs
Your post says the rears are.
I cant tell by your chart. I only see one chart. so I dont know what the other one says.
which rates are front which are rear.. I think thats the confusion.
908s info says the fronts are 167 ft lbs
Your post says the rears are.
I cant tell by your chart. I only see one chart. so I dont know what the other one says.
Last edited by Bucephalus; Sep 26, 2012 at 07:13 PM.
Bullitt Member
Joined: May 31, 2011
Posts: 212
Likes: 0
From: Jax, FL
Actually the problem with 908s post is he says the rears are 131lbs. He is wrong. My Ford Spring chart posted shows the rear rates only and the Brembo Cars use a 167lbs rate. I have verified this rate several times in the creation of the 55D Rear Spring Kit I made for Our Mustangs.
Yea thats the confusing part to most I think. The list he has says the fronts are 167. Now I remember old school cars spring rates were higher for the front than the rear.
Im just pointing out where the confusion to most is now that the rear springs are higher rated than the fronts.
Last edited by Ordie; Sep 27, 2012 at 08:38 AM.
GT Member
Joined: July 26, 2011
Posts: 137
Likes: 0
From: Arizona
I see you listed a bunch of other spring rates that having nothing to do with the BREMBO SPRING RATES we were discussing, other then 1 which are the same numbers I already told you there were, of which you said I was wrong.
SO I GUESS THIS MEANS THAT YOU FINALLY SEE THAT MY NUMBERS ARE RIGHT AFTER ALL?
Here is my Ford Blueprint Info that comes from Ford directly:
The Brembo is 29.2 N/mm Rates ( SGR GREEN SPRING on CHART)
Newton is a unit of force.
lb/in is a an english unit of spring rate.
If you mean Newtons per milimeter (metric units springrate) then the conversion is as follows:
1 N/mm = 5.710146 lb/in
Therefore 29.2 N/mm = 167 ft/lbs.
Case closed. I'm not trying to be a jerk, it's just that everyone is entitled to an opinion, but making a "statement" should be a verified fact, so that others who do not know are given the truth to work with.
SO I GUESS THIS MEANS THAT YOU FINALLY SEE THAT MY NUMBERS ARE RIGHT AFTER ALL?
Here is my Ford Blueprint Info that comes from Ford directly:
The Brembo is 29.2 N/mm Rates ( SGR GREEN SPRING on CHART)
Newton is a unit of force.
lb/in is a an english unit of spring rate.
If you mean Newtons per milimeter (metric units springrate) then the conversion is as follows:
1 N/mm = 5.710146 lb/in
Therefore 29.2 N/mm = 167 ft/lbs.
Case closed. I'm not trying to be a jerk, it's just that everyone is entitled to an opinion, but making a "statement" should be a verified fact, so that others who do not know are given the truth to work with.
Member
Joined: March 5, 2011
Posts: 48
Likes: 0
Verification...
I also tend to trust Ford Engineering data and Ford Engineering in general. I happen to have a spring off my 11' Brembo car that didn't show on your (Fords) data sheet. It's the front springs. My tags read: Tan, SEF BR33-5310-EA. Does this show on anything you have or seen. Curious if Ford may have grabbed something else out of the parts bin to keep the line going that was a suitable alternate. TIA Russ
I see you listed a bunch of other spring rates that having nothing to do with the BREMBO SPRING RATES we were discussing, other then 1 which are the same numbers I already told you there were, of which you said I was wrong.
SO I GUESS THIS MEANS THAT YOU FINALLY SEE THAT MY NUMBERS ARE RIGHT AFTER ALL?
Here is my Ford Blueprint Info that comes from Ford directly:
The Brembo is 29.2 N/mm Rates ( SGR GREEN SPRING on CHART)
Newton is a unit of force.
lb/in is a an english unit of spring rate.
If you mean Newtons per milimeter (metric units springrate) then the conversion is as follows:
1 N/mm = 5.710146 lb/in
Therefore 29.2 N/mm = 167 ft/lbs.
Case closed. I'm not trying to be a jerk, it's just that everyone is entitled to an opinion, but making a "statement" should be a verified fact, so that others who do not know are given the truth to work with.
SO I GUESS THIS MEANS THAT YOU FINALLY SEE THAT MY NUMBERS ARE RIGHT AFTER ALL?
Here is my Ford Blueprint Info that comes from Ford directly:
The Brembo is 29.2 N/mm Rates ( SGR GREEN SPRING on CHART)
Newton is a unit of force.
lb/in is a an english unit of spring rate.
If you mean Newtons per milimeter (metric units springrate) then the conversion is as follows:
1 N/mm = 5.710146 lb/in
Therefore 29.2 N/mm = 167 ft/lbs.
Case closed. I'm not trying to be a jerk, it's just that everyone is entitled to an opinion, but making a "statement" should be a verified fact, so that others who do not know are given the truth to work with.
