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02-19-2005, 05:31 PM
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#1
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Whats the difference between IRS and Live rear axel
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II Proud
Join Date: Apr 2004
City: Tulsa
State: Oklahoma
Posts: 50
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Pretty much.... why do people always gripe about the cobra's having IRS? I know the IRS likes to break under hard drag launches but I don't know why. Can someone explain? |
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02-19-2005, 09:43 PM
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#2
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Mustang Freak
Join Date: Jun 2003
City: Davenport, IA
State: Iowa
Posts: 473
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The half shafts on the Cobra IRS are smaller than the single live axle on a GT. The trick is that the IRS in the cobra handles way better. The cobra is pretty much set up for the twisties, not a drag track.
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T-loc, Custom CAI, Half-shafted throttle body, Steeda Quick Release Clutch Quadrant w/ Firewall adjuster and adjustable clutch cable, ASP-underdrive pulley, GT rear swaybar, GT Quad Shocks, Full MM Coilover conversion w/ "aggressive springs," 17" Grey Torque Thrust wheels, FMS Aluminum driveshaft & Tri-Ax Shorthrow shifter. SSM ported intakes and a FLEX 1/2 spacer, RPM ported heads and a 207 cam. SCT chip. 
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02-19-2005, 10:13 PM
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#3
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Elite member
Join Date: Dec 2004
City: Hesperia, California
State: California
Posts: 1,092
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Exactly how I came to understand it as well. The wheels tend to hop more with irs but when they're connected it makes it more difficult and gives you more traction. |
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02-20-2005, 05:24 PM
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#4
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Registered User
Join Date: Oct 2004
Posts: 139
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One is better for the drag strip, the live axle, and the other the IRS Cobra rears are for a road course. I have friends with Cobra's and they don't like the IRS to soft with the rubber bushings.
Matt 
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Kenny Brown 580 lb/in H&R Sports 250 lb/in, Kenny Brown strut tower brace k-member brace, GRC Performance full length subs, Koni race valved struts and shocks, GT front and rear sway bars, Maximum Motorsports rear control arms aluminuum rack bushings, Energy urethane sway bar, lower control arms, spring isolators and spherical bushings. and many others.....
Unicorn= The Untouchable Horse
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02-20-2005, 06:03 PM
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#5
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II Proud
Join Date: Apr 2004
City: Tulsa
State: Oklahoma
Posts: 50
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I know that IRS doesn't seem to be as well on the drag strip. Which made me wonder why Ford would put it in the cobra. It seems that people are more interested in drag racing the cobra then road racing it. They should have added a live rear axel as an option. |
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02-20-2005, 06:16 PM
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#6
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Registered User
Join Date: Oct 2004
Posts: 139
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Ford wanted to be more of a road course stang.
Matt
__________________
Kenny Brown 580 lb/in H&R Sports 250 lb/in, Kenny Brown strut tower brace k-member brace, GRC Performance full length subs, Koni race valved struts and shocks, GT front and rear sway bars, Maximum Motorsports rear control arms aluminuum rack bushings, Energy urethane sway bar, lower control arms, spring isolators and spherical bushings. and many others.....
Unicorn= The Untouchable Horse
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02-20-2005, 06:34 PM
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#7
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Taking life one day at a time
Join Date: May 2003
City: Simpsonville
State: South Carolina
Posts: 10,970
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Drag racers by GT's because they are cheaper to buy and are going to mod it anyway.
Ford from the very beginning built the Cobra to compete with the european cars that are all set up as road course and better handling cars.
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02-21-2005, 05:02 PM
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#8
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WTF^^...
Join Date: May 2003
City: Hoover / Florence
State: Alabama
Posts: 27,258
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the IRS is nice for a smooth ride and handeling, but if you drag race an live axle is the only WAY to go, along with the fact that a live axle can be made to handle better than an IRS probably... you just pay for it dearly with extra noise and rough ride....
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2003 REDFIRE COBRA #3938 of 5082 @ 05/27/2003 1 of 414
MGW Shifter, Stingers, JLT, SS Inserts, MM FLSFC & CC Plates, SS Lines, H&R Race springs, IRS Brace, MRT Hood Struts
ME.com Member #29 - 400rwhp/380rwtq
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