My Wheel Hop Mods And Lack Of Success

roborangefd3s · May 04, 2013, 02:41:04 PM

Hi, - so I am trying to get ride of wheel hop, it ruins the car.

I have swapped the diff bushes for delrin, I have fitted a dragon diff brace - I have also put 315 wide michelin pilot sports on, they are huge.

But my car still wheel hops, why? - do I need to do all the suspension arm bushes or something?

What is next on the list of anti wheel hop mods please?

Thanks

HaywardRotary · May 04, 2013, 02:53:35 PM

The suspension struts, shocks in particular.
Diff brace does nothing as diff is not floating.

HaywardRotary · May 04, 2013, 02:54:40 PM

Also how are you getting this when you are still running in?

roborangefd3s · May 04, 2013, 02:56:55 PM

thanks Carl, it finished running in ages ago - we spoke about mapping remember?

so I need to get new coilovers then to stop the hop?

roborangefd3s · May 04, 2013, 02:57:30 PM

wheel hop from 3500 rpm

Grant Monkhouse · May 04, 2013, 04:07:08 PM

A KG parts diff brace is a much better option. It stopped my wheel hop. Also worth changing all the rest of the bushes

shaunwil · May 04, 2013, 04:27:39 PM

Same as Above really but mine was a copy !

Had the dragon brace and it didn\'t work anywhere near as well, it helped but not enough.

Shaun

Grant Monkhouse · May 04, 2013, 04:52:57 PM

If you go down to Carl\'s he can show a brace that will stop the diff moving completely. If he has the orange drag car there. It requires some custom work and welding but it will fix the problem for sure

tinker-27 · May 04, 2013, 05:45:47 PM

What stopped mine was partly shocks but mainly rear upper wishbone bushes . Sent to poly and made a massive difference , I found it more wheel end than diff .

cyman · May 04, 2013, 06:15:15 PM

i modded my old fd and never suffered wheel hop at all.mods were as follows

poly diff bushes
ohlins coilovers with around 400 and 450 springs
poly bushed whole suspension
rubber mounted gearbox brace
racing beat arb\'s

i think wheel hop can be made worse by suspension being to stiff on the rear without enough control from the shocks it causes the spring to not be controlled correctly and literally do its own thing. this will have the most impact on your wheels ability to keep on the road. then any worn bushes will cause movement and cause what feels like slack in the whole transmission.

these are just my observations for the fd after many different setups. and no i did not use a diff brace at all and ran 450-500bhp with the car.

dom187 · May 04, 2013, 06:53:18 PM

Sorry if silly question, can poor wheel alignment cause wheel hop as well?

roborangefd3s · May 04, 2013, 06:56:02 PM

possibly yes, the thing is I dont want to pay for alignment and then find out it still hops bcos of bushes or trailing arms or whatever.

bimbleuk · May 06, 2013, 09:55:59 AM

Ultimately your dampers will control your wheel oscillations and as you sound like you\'re running wide 18\'s or something with heavy tyres your so maybe your unsprung mass is a lot higher now. So damper may not be able to control that extra mass.

Maybe some decent monotube dampers valved for a higher wheel mass is needed.

I\'ve always run fairly soft springs on my V8 conversion with lots of torque and it\'s always suffered some wheel hop. I\'ve done the usual poly bushes, new spherical bearings and replaced the diff bushes and that all reduced the hop. My damper are nothing special so I could benefit from an upgrade myself.

Grant Monkhouse · May 06, 2013, 12:36:23 PM

Wider tyres will make the car wheel hop worse as you have more grip.

Wheel hop happens when the diff gets to rotate forwards as the tyres grip. You need to stop this happening.

This is the reason cars with solid rear axles use "traction bars, 2links, or 4 link " setups. To stop the axle rotating and causing the wheels/axle skipping or return back to its normal position

roborangefd3s · May 06, 2013, 08:00:54 PM

Quote from: bimbleuk;857210Ultimately your dampers will control your wheel oscillations and as you sound like you\'re running wide 18\'s or something with heavy tyres your so maybe your unsprung mass is a lot higher now. So damper may not be able to control that extra mass.

Maybe some decent monotube dampers valved for a higher wheel mass is needed.

I\'ve always run fairly soft springs on my V8 conversion with lots of torque and it\'s always suffered some wheel hop. I\'ve done the usual poly bushes, new spherical bearings and replaced the diff bushes and that all reduced the hop. My damper are nothing special so I could benefit from an upgrade myself.

v8 conversion?