Building IRS
02-19-2008, 08:53 AM
#1
2nd Gear Member
Thread Starter
Join Date: Feb 2007
Location: Maryland
Posts: 227
Building IRS
Is there a good writeup on how to build the IRS on a 99 Cobra? I want to change out the 29 spline axels for 31 spline and get a better differential. What parts are needed to build the IRS? Also, what kind of power can a built IRS hold? I'm looking to twin turbo my cobra and I think the IRS would be the first thing to break.
02-19-2008, 10:10 AM
#3
4th Gear Member
Join Date: Oct 2006
Location: Durham, NC
Posts: 1,541
RE: Building IRS
http://www.svtperformance.com/forums...d.php?t=231900
^^there you go
basically bushings, girdles and half-shafts. polyurethane subframe bushings, polyurethane UCA/LCA bushings, differential girdle, solid/poly differential bushings, solid differential mount, thicker tie rods or bumpsteer kit, level 1,2 or 5 halfshafts, springs/shocks or coil-overs. in the 99 cobras case, a new differential. other options include shms shepherical spindle upgrade, finding kenny brown UCAs/LCAs, thicker 03-04 pinion flanges (need a shorterdriveshaft) or mods such as these done to the carrier:
http://www.mustang50magazine.com/tec...ion/index.html
^^there you go
basically bushings, girdles and half-shafts. polyurethane subframe bushings, polyurethane UCA/LCA bushings, differential girdle, solid/poly differential bushings, solid differential mount, thicker tie rods or bumpsteer kit, level 1,2 or 5 halfshafts, springs/shocks or coil-overs. in the 99 cobras case, a new differential. other options include shms shepherical spindle upgrade, finding kenny brown UCAs/LCAs, thicker 03-04 pinion flanges (need a shorterdriveshaft) or mods such as these done to the carrier:
http://www.mustang50magazine.com/tec...ion/index.html
02-20-2008, 02:04 PM
#6
2nd Gear Member
Join Date: Sep 2005
Location:
Posts: 315
RE: Building IRS
ORIGINAL: Blownsvt
just swap in the irs out of an 03-04, might be easier but i don't know.
just swap in the irs out of an 03-04, might be easier but i don't know.
A STOCK IRS out of an 03/04 is only going to be marginally stronger and WILL NOT be the end-all solution to a high-horsepower application.
02-21-2008, 08:14 AM
#10
2nd Gear Member
Join Date: Sep 2005
Location:
Posts: 315
RE: Building IRS
he was talking about going twin turbo. Thats fairly all-out in my book.... more than what I would trust a stock 03/04 IRS with. just because it came out of a Terminator doesnt mean its indestructible.
Solid axle IS cheaper to built to handle more horsepower.
Solid axle IS cheaper to built to handle more horsepower.