All Things Mk5 > How to Guides / Troubleshooting
Wheel hop crazy - front left
SteveS:
Yes, the engine sound has transferred, i quite like it, but still... issue not fixed by installing the mounts.
I will go back to vwr, i don't trust any other tuners anyway.
tony_danza:
Why are you trying to cure wheel hop with engine mounts?
Wheel hop is the car's wheel being pulled forward under hard accelleration into the wheelwell, it going from toe-in to toe-out, losing traction and snapping back. You replace the lower mount to stop the engine from rocking when this snap occurs, making it feel worse.
Mounts don't cure it. A diff won't cure it. KW Vinfiniti won't cure it - all they do is alter the threshold at which the wheel hop occurs. Short of running solid mounts on the wishbones (rosejointed) you'll never completely eliminate it, but you'll make it a hell of a lot better with poly.
If nothing is worn or loose, shocks/topmounts etc, then first port of call is to poly the wishbones if they aren't already done.
As a slight aside, you have a diff - are both wheel spinning, or just the nearside?? It could be shagged and that could be your problem, it isn't torque biasing??
SteveS:
Hmm, im not sure if the wishbones were changed to S3 ones? ill have to find out.
When i was at VWR i did say do we need to change any of these, they said nah, no need...
The hop is coming from the passenger/nearside.
Now you mention it, i think it was pulling to the left, but then i know they are meant to, Ill check on torque steer tonight and how much it pulls.
tony_danza:
You've got a WALK??
If not, get the Superpro version (much cheaper and arguably better). The front wishbone mount isn't as essential, but it'd be daft not to do it too.
A full set of mounts is overkill, I can't help but feel you've been led down the garden path there if you were sold them on the basis of them being a wheel hop cure. I'd class them as a 'nice to have' and not a 'need'. I certainly never felt the need to have them on mine, and that got some serious abuse on track.
To check the diff, axle stand the car and put it in a forward gear on tickover. Both wheels will rotate in the same direction if it is working ok. For the second part, it being faulty under load, you'd maybe need to seek some expert advice there, but it'd been a really really slim chance of it being the cause, so don't focus on that too much.
Oh, and mine never pulled to the left. :confused: You've had the rear geo checked, right?? They're way out from the factory, straighten it up and it'll track true.
RedRobin:
--- Quote from: tony_danza on December 24, 2010, 10:54:53 am ---
Why are you trying to cure wheel hop with engine mounts?
Wheel hop is the car's wheel being pulled forward under hard accelleration into the wheelwell, it going from toe-in to toe-out, losing traction and snapping back. You replace the lower mount to stop the engine from rocking when this snap occurs, making it feel worse.
Mounts don't cure it. A diff won't cure it. KW Vinfiniti won't cure it - all they do is alter the threshold at which the wheel hop occurs. Short of running solid mounts on the wishbones (rosejointed) you'll never completely eliminate it, but you'll make it a hell of a lot better with poly.
If nothing is worn or loose, shocks/topmounts etc, then first port of call is to poly the wishbones if they aren't already done.
As a slight aside, you have a diff - are both wheel spinning, or just the nearside?? It could be shagged and that could be your problem, it isn't torque biasing??
--- End quote ---
....IIRC, in my case I found that the coilover suspension with WALK and new wishbone bushes setup (all installed in one session) reduced wheel hop. Later on I found that when I only installed the lower engine mount it further helped transfer power to the road smoothly. Surely there is also the factor of driving-style - I have trained my right foot to move progressively and not stamp on the throttle - I don't like wheelspin and feel I'm not driving properly if I induce it.
I'm thinking it can be a combination of components which help reduce wheel hop. There's no doubt that even only fitting a poly torque arm insert reduces the hop, so logically at least, a stiffer lower engine mount will help a lot.
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