Axle hop, etc.
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Joined: Sep 2003
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From: Raleigh, NC
Axle hop, etc. I know this has probably been beat to death, but here goes.
1997 Z28 M6, makes a little over 400rwhp NA. Stock 3.42 gear. 17" SS wheels with 275 section street tires. Suspension is completely stock other than a set of BMR tubular LCAs I installed years ago.
When it's anything under 65-70 degrees outside, I can't go full throttle until third gear without blowing the tires away, and sometimes it even wants to try and break loose in third. When the tires do finally try and hook somewhat, I basically get axle hop at highway speeds and have to back out of it entirely.
Would a set of LCA relo brackets and SFCs cure this hopping nonsense and maybe help the 7.5 rear live for a little while?
1997 Z28 M6, makes a little over 400rwhp NA. Stock 3.42 gear. 17" SS wheels with 275 section street tires. Suspension is completely stock other than a set of BMR tubular LCAs I installed years ago.
When it's anything under 65-70 degrees outside, I can't go full throttle until third gear without blowing the tires away, and sometimes it even wants to try and break loose in third. When the tires do finally try and hook somewhat, I basically get axle hop at highway speeds and have to back out of it entirely.
Would a set of LCA relo brackets and SFCs cure this hopping nonsense and maybe help the 7.5 rear live for a little while?
all i know is i had wheel hop and by adding bmr LCA's, sfc, panh its gone. some would add torque arm to the list. i know nothing about relocation brackets. goodluck. ps if funds are tight first try welded sfc.
Last edited by DANOZ28; Jan 31, 2014 at 11:05 AM.
Relocation brackets should definitely help. More so than a torque arm. Use weld-on's. Make sure rear is square before welding. As it is the stock position for LCA's are barely angled enough to control anything. What brand of tires are you using?
Why do you suppose the NHRA Stockers don't use them?
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He needs shocks.
There is an awful lot of fast cars out there without them, that do not wheel hop. Mine never did on short tires.
There is an awful lot of fast cars out there without them, that do not wheel hop. Mine never did on short tires.
Last edited by Ed Wright; Jan 31, 2014 at 02:58 PM.
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60K mi, boxed in stock rear LCA's, stock springs/shocks, welded relocation brackets but in middle hole, adjustable PHB, NITTO NT555's and it's spin city for me.
I haven't had the car in warm weather yet, but so far this winter all I do is spin with no hop.
I haven't had the car in warm weather yet, but so far this winter all I do is spin with no hop.
wheel hop comes from the axle's energy not being controlled. there are many reasons that it isn't being controlled. No LCA relos aren't really the Best answer. The stock torque arm flexes a LOT and that can mess with the tires ability to handle the load after the initial flex. Also the Pinion angle stock is always closer to zero to decrease wear and losses of energy through the driveline. This at zero and a Flexible TA can actually make the axle not put enough initial forward energy that stays forward. The TA flexes back down actually pulling the body of the car backward causing a loss of weight on the rear tires causing them to lose grip and spin, then it starts all over again. Also the shock controls the weight transfer of the car to the tires. How fast and how strong. Bad shocks are terrible for allowing wheel hop. The bad shock allows all of the weight to transfer but doesn't work well enough to keep the axle from moving to fast up and down to keep the weight there. Its mostly about smooth controlled weight transfer. A few other things but that would take an entire book. lol
Ed and nitrous2 are right on. worn out shocks and anything flexible in the system are the contributors to your wheel hop. Stock bushings are marginal when new; those in your "completely stock other than..." suspension should be replaced. With all that working against you, relocation brackets can actually make the problem worse - hitting it harder makes it bounce back harder.
Tire height has very little to do with it.
Tire height has very little to do with it.
Ed and nitrous2 are right on. worn out shocks and anything flexible in the system are the contributors to your wheel hop. Stock bushings are marginal when new; those in your "completely stock other than..." suspension should be replaced. With all that working against you, relocation brackets can actually make the problem worse - hitting it harder makes it bounce back harder.
Tire height has very little to do with it.
Tire height has very little to do with it.
By tire height I was referring to the comment about 30" tires, not sidewall height.
Whereas a small sidewall,street car will probably feel that wheel hop a whole lot more.
All I was getting at.
On my car having the relocation brackets and being able to lower the aft end of the lca definitely plants the tires better reducing how long the tires spin and eliminating the wheel hop I previously had.
Not saying they do or dont help I have no experience with them.
