Anyone with a 03-04 with a wheel hop problem?

Verox · 02-14-2012, 04:42 PM

Hello Cobra owners,

A bit of an odd request. Is there anyone here with a relatively stock 03-04 Cobra that experiences wheel hop with their IRS? I'm trying to find another test subject to help me evaluate a possible solution to wheel hop. Forum rules prevent me from elaborating too much here.

Please just shoot me a PM or email if you're interested and we'll go from there.

Thanks!
Steven

Verox · 02-14-2012, 04:47 PM

To be clear, I am not trying to sell or advertise anything here. I've just been working on this project for awhile and would like some help testing it out.

ausie · 02-15-2012, 08:03 AM

Wheel hop is a common issue with many IRS cobras. I had an 01 that was plagued with that problem. My current 04 does not have this issue and is essentially stock. I believe it is related to the alighnment of the rear wheels having a slight toe in. Also tires are a contributor to this issue.

Verox · 02-15-2012, 10:45 PM

Quote:

Originally Posted by ausie

Wheel hop is a common issue with many IRS cobras. I had an 01 that was plagued with that problem. My current 04 does not have this issue and is essentially stock. I believe it is related to the alighnment of the rear wheels having a slight toe in. Also tires are a contributor to this issue.

Yeah, wheel hop is a very complex issue. Energy is stored up by all the compliance in the system. This include suspension compliance, bushing compliance, axle and drive-shaft twist, frame twist and the tires. When a tire breaks loose some of this energy is released very quickly. The damping and natural frequency of the system plays a big roll in preventing those cycles from building up and becoming wheel hop.

Does anyone here have an 03-04 that does get wheel hop? If so, under what conditions does it usually occur?

**cobrabitn** · 02-15-2012, 11:11 PM

I believe if you change out the bushings and lower the car, it will quit about 99% of the time or at least it did on my 99 Cobra. I also believe you can put an air bag in one of the rear springs to make it stop.

FLEA03 · 02-15-2012, 11:50 PM

I have a 03. I haven't had alot of wheel hop, but I try not to spin the tires very much. When I have I've had drag radials on and no hop. My car is lowered 1" also. I'm getting ready to install a Full Tilt Boogie IRS system. Also FR Diff cover as I think mine is cracked.

02-14-2012, 04:42 PM	#1
Verox Registered User Join Date: Feb 2012 Posts: 3	Anyone with a 03-04 with a wheel hop problem? Hello Cobra owners, A bit of an odd request. Is there anyone here with a relatively stock 03-04 Cobra that experiences wheel hop with their IRS? I'm trying to find another test subject to help me evaluate a possible solution to wheel hop. Forum rules prevent me from elaborating too much here. Please just shoot me a PM or email if you're interested and we'll go from there. Thanks! Steven

02-15-2012, 08:03 AM	#3
ausie Don't let the dog drive Join Date: Apr 2004 Location: Kinston, NC Posts: 1,883	Wheel hop is a common issue with many IRS cobras. I had an 01 that was plagued with that problem. My current 04 does not have this issue and is essentially stock. I believe it is related to the alighnment of the rear wheels having a slight toe in. Also tires are a contributor to this issue. __________________ 2004 SVT Cobra, Silver, February 2004 SVT Build # 2485 out of 3768 SLP Loudmouth Cat-back UPR double lock firewall adjuster UPR GMS extreme double hook quadrant Wheels: Ford SVT 10th anniv. wheels (track duty) SVE 10th anniv. style 17x9F, 10x10.5R BBS RK Plasma 18x8.5F, 18x10R (retired) (retired) 2001 black SVT Cobra, October 2001 missed but not forgotten

02-15-2012, 11:11 PM	#5
cobrabitn Dr Jekyll on the street, Mr Hyde on the track Join Date: Jun 2001 Location: Rock Hill SC Posts: 14,649	I believe if you change out the bushings and lower the car, it will quit about 99% of the time or at least it did on my 99 Cobra. I also believe you can put an air bag in one of the rear springs to make it stop. __________________ Cobrabitn 2016 Ruby Red Metallic with Caribou accent F-350 Crew Cab Stump Puller! 6.7 Diesel Automatic with Chrome Package, Off Road Package, 3.55 Locking axles, and Ultimate Lariat Interior Trim Package! 2017 Shelby GT350 Coupe - track car! Mods: JLT True Cold Air oil catch can 2009 Vista Blue Shelby GT 500 Coupe - Garage Queen Tinted Windows JLT True Cold Air Kit Pro-Dyno Tune 526 rwhp - 511 rwtq 1994 Rio Red Indy Pace Car #22 "Runabout" Snake in the grill MGW shift knob 1996 SVT Cobra Wheels 1969 New Lime Mustang Mach 1 Sportsroof - Second owner - bone stock with shaker. One SVT Cobra, one Shelby GT500, one 69 mach 1, and a Shelby GT350 is better than nothing! Custom Data Plates for your Mustang or Ford! Buy "Cool Merchandise" at Data Plates Plus www.dataplatesplus.com See my MSR Video here!

02-15-2012, 11:50 PM	#6
FLEA03 SCMC Member Join Date: May 2011 Location: Fall Branch, TN Posts: 23	I have a 03. I haven't had alot of wheel hop, but I try not to spin the tires very much. When I have I've had drag radials on and no hop. My car is lowered 1" also. I'm getting ready to install a Full Tilt Boogie IRS system. Also FR Diff cover as I think mine is cracked. __________________ ___________________________________ 2003 Cobra 4.6 4V 1993 LX Weekend Oval Track Racer 2.3 2013 F-250 6.7 1996 Cobra - Track car 4.6 4V 1991 LX - Drag Car 351W

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02-14-2012, 04:47 PM	#2
Verox Registered User Join Date: Feb 2012 Posts: 3	To be clear, I am not trying to sell or advertise anything here. I've just been working on this project for awhile and would like some help testing it out.

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