|
|
Photo Gallery | $ Donations $ | Register | FAQ | Social Groups | Calendar | Search | Today's Posts | Mark Forums Read |
|
Thread Tools | Display Modes |
10-23-2015, 08:49 AM | #1 |
Registered User
Join Date: Aug 2004
Location: Winston-Salem,NC
Posts: 1,802
|
How do you test the LSD?
I keep thinking that my LSD is gone because of the amount of tire spin coming off of corners and I can't tell if it's one or both spinning. But traction has gone away. The other day from a stop and on an uphill incline I let it fly and laid 2 of the prettiest black marks you have ever seen. Is this a good test or is there another and better way?
__________________
2003 Azure mach1 5 speed with IUP Maximum Motorsports R&T Box with Torque Arm and lots of other bits and pieces here and there 2012 Candy Red Metalic Premium GT with Brembo/Trak Pak and 373s HPDE Instructor |
10-23-2015, 10:18 AM | #2 |
700 HP Mach
Join Date: Nov 2003
Location: Orlando, FL
Posts: 8,384
|
Re: How do you test the LSD?
thats about the only way I know. Maybe try it a couple times relatively close together, if it never peg legs Id have to think its ok
__________________
03 dsg mach1 - MPR built 9.5:1 motor, D1, cams, ported intake, full exhaust, magnum t56, built rear, E85 etc... '12 F150 FX2 Supercrew with Ecoboost daily beater |
10-24-2015, 08:56 AM | #3 |
Registered User
Join Date: Aug 2004
Location: Winston-Salem,NC
Posts: 1,802
|
Re: How do you test the LSD?
I have also added bigger sway bars so I am wondering if the bigger bar is not letting the inside tire droop enough to get traction.
__________________
2003 Azure mach1 5 speed with IUP Maximum Motorsports R&T Box with Torque Arm and lots of other bits and pieces here and there 2012 Candy Red Metalic Premium GT with Brembo/Trak Pak and 373s HPDE Instructor |
10-24-2015, 09:05 AM | #4 |
Registered User
Join Date: Feb 2013
Location: NEW YORK HIGHEST TAXES IN AMERICA
Posts: 603
|
Re: How do you test the LSD?
Sway bars or really anything outside the diff can't affect it. Sounds like its working. A carbon disc rebuild is easy and affordable for the most part. LIMITED means its not a spool. There is some "give" cornering. Straight line should be even or close to it.
|
10-24-2015, 09:31 AM | #5 |
Can't be bridled
Join Date: Sep 2007
Location: Texas
Posts: 7,006
|
Re: How do you test the LSD?
How do I test LSD? Well....
But seriously, it sounds like it's working to me if it's laying down rubber like you say. A thicker sway bar is only going to increase the spring rate when the car is loaded in a corner, so if you were going straight I can't see that having much effect. As mentioned, the clutch rebuild is cheap end easy if you just want peace of mind. That's one reason I got the 31 spline cobra differential when I built my rear.
__________________
2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁 |
10-24-2015, 02:16 PM | #6 |
Registered User
Join Date: Oct 2004
Location: West Chester Pa.
Posts: 1,431
|
Re: How do you test the LSD?
This had a whole different meaning when we were growing up! We usually found who had the best album collection and black light posters lol
|
10-25-2015, 01:58 PM | #7 | |
Registered User
Join Date: Aug 2004
Location: Winston-Salem,NC
Posts: 1,802
|
Re: How do you test the LSD?
Quote:
__________________
2003 Azure mach1 5 speed with IUP Maximum Motorsports R&T Box with Torque Arm and lots of other bits and pieces here and there 2012 Candy Red Metalic Premium GT with Brembo/Trak Pak and 373s HPDE Instructor |
|
10-25-2015, 04:32 PM | #8 | |
Can't be bridled
Join Date: Sep 2007
Location: Texas
Posts: 7,006
|
Re: How do you test the LSD?
Quote:
The inside wheel, as I'm sure you know, will always be the first to spin. Camber settings (heating/manipulating the rear end housing) or switching to an IRS are the only ways I'm award of to combat that issue. But I'll tell you right now, there's waaayyy more trade-offs going to an IRS than people think. Ford (SVT) was in over their head when they cobbled together the SN95 IRS rears. Speaking from 5 yrs experience.
__________________
2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁 |
|
10-27-2015, 08:19 AM | #9 | |
Registered User
Join Date: Aug 2004
Location: Winston-Salem,NC
Posts: 1,802
|
Re: How do you test the LSD?
Quote:
__________________
2003 Azure mach1 5 speed with IUP Maximum Motorsports R&T Box with Torque Arm and lots of other bits and pieces here and there 2012 Candy Red Metalic Premium GT with Brembo/Trak Pak and 373s HPDE Instructor |
|
10-27-2015, 09:51 AM | #10 |
Dark Knight
Join Date: Nov 2009
Location: Albuquerque, NM
Posts: 5,759
|
I use donuts to test mine
__________________
Vortech V2 S-trim, E85, A2A Treadstone, Comp cams, built engine, full exhaust, built rear, built 4r70, more mods. Tuned by me with SCT Advantage |
10-27-2015, 11:45 AM | #11 |
Registered User
Join Date: Feb 2013
Location: NEW YORK HIGHEST TAXES IN AMERICA
Posts: 603
|
Re: How do you test the LSD?
Or use this test method^^^^^^
|
10-27-2015, 02:40 PM | #12 |
Registered User
Join Date: Aug 2004
Location: Winston-Salem,NC
Posts: 1,802
|
Re: How do you test the LSD?
__________________
2003 Azure mach1 5 speed with IUP Maximum Motorsports R&T Box with Torque Arm and lots of other bits and pieces here and there 2012 Candy Red Metalic Premium GT with Brembo/Trak Pak and 373s HPDE Instructor |
10-27-2015, 02:57 PM | #13 |
Registered User
Join Date: Dec 2007
Location: ?,Colorado
Posts: 204
|
Re: How do you test the LSD?
I believe he was talking about the post above his....doing donuts.
Last edited by logan03co; 10-27-2015 at 03:21 PM. |
10-27-2015, 06:04 PM | #14 |
Registered User
Join Date: Feb 2013
Location: NEW YORK HIGHEST TAXES IN AMERICA
Posts: 603
|
Re: How do you test the LSD?
|
10-28-2015, 08:28 AM | #15 |
Registered User
Join Date: Aug 2004
Location: Winston-Salem,NC
Posts: 1,802
|
Re: How do you test the LSD?
I believe this all adds up to nobody here really knows.
__________________
2003 Azure mach1 5 speed with IUP Maximum Motorsports R&T Box with Torque Arm and lots of other bits and pieces here and there 2012 Candy Red Metalic Premium GT with Brembo/Trak Pak and 373s HPDE Instructor |
10-28-2015, 10:32 AM | #16 |
Registered User
Join Date: Feb 2013
Location: NEW YORK HIGHEST TAXES IN AMERICA
Posts: 603
|
Re: How do you test the LSD?
|
10-28-2015, 01:43 PM | #17 |
Registered User
Join Date: Mar 2011
Location: Fort Worth, TX
Posts: 209
|
Re: How do you test the LSD?
Jack up the left wheel and turn it using a torque wrench. It should take around 100 ft lbs to turn the wheel if the clutches are still good.
|
10-29-2015, 08:12 AM | #18 |
Registered User
Join Date: Aug 2004
Location: Winston-Salem,NC
Posts: 1,802
|
Re: How do you test the LSD?
I'll try that. Which lug should I use?
__________________
2003 Azure mach1 5 speed with IUP Maximum Motorsports R&T Box with Torque Arm and lots of other bits and pieces here and there 2012 Candy Red Metalic Premium GT with Brembo/Trak Pak and 373s HPDE Instructor |
10-29-2015, 09:24 AM | #19 |
Registered User
Join Date: Mar 2011
Location: Fort Worth, TX
Posts: 209
|
Re: How do you test the LSD?
|
10-29-2015, 01:13 PM | #20 |
Registered User
Join Date: Aug 2004
Location: Winston-Salem,NC
Posts: 1,802
|
Re: How do you test the LSD?
__________________
2003 Azure mach1 5 speed with IUP Maximum Motorsports R&T Box with Torque Arm and lots of other bits and pieces here and there 2012 Candy Red Metalic Premium GT with Brembo/Trak Pak and 373s HPDE Instructor |
10-30-2015, 08:26 AM | #21 |
Registered User
Join Date: Mar 2011
Location: Fort Worth, TX
Posts: 209
|
Re: How do you test the LSD?
I usually test by turning the wheel clockwise so I don't end up loosening the lug nut. It will turn in either direction. You are just testing the amount of force it takes to slip the clutch pack. If it take significantly less than 100 ft. lbs. the clutches are shot and you need a rebuild.
|
10-31-2015, 08:09 AM | #22 |
Registered User
Join Date: Aug 2004
Location: Winston-Salem,NC
Posts: 1,802
|
Re: How do you test the LSD?
Got it and thanks.
__________________
2003 Azure mach1 5 speed with IUP Maximum Motorsports R&T Box with Torque Arm and lots of other bits and pieces here and there 2012 Candy Red Metalic Premium GT with Brembo/Trak Pak and 373s HPDE Instructor |
11-11-2015, 09:53 AM | #23 |
Hillclimb Extraodinaire
Join Date: Aug 2004
Location: Perkiomenville, PA
Posts: 2,594
|
Re: How do you test the LSD?
I'm really surprised you haven't put in a real diff yet. Trash that thing and get a T2R and you'll never replace it or break it. I've had mine in the car since 2011 and it puts up with an ungodly amount of punishment with the 315s.
This is the one I'm using. I only pulled the link for example. https://fordracingpartsbydonwood.com...r-m-4204-t31h/ While it's a little pricey, I don't need to have it rebuilt or replaced every year. It now has about 3500 miles on it. Primarily hillclimb miles.
__________________
RIP - Destroyed August 15, 2015 Motor + Procharger + driver = Baddest hillclimbing Mach 1 in the country Mustang dyno: 538hp/481tq @ 14lbs/19deg timing DynoJet comparison: 600hp/539tq Looking for more hillclimbers! |
11-12-2015, 11:14 AM | #24 | |
Registered User
Join Date: Aug 2004
Location: Winston-Salem,NC
Posts: 1,802
|
Re: How do you test the LSD?
Quote:
__________________
2003 Azure mach1 5 speed with IUP Maximum Motorsports R&T Box with Torque Arm and lots of other bits and pieces here and there 2012 Candy Red Metalic Premium GT with Brembo/Trak Pak and 373s HPDE Instructor |
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Display Modes | |
|
|