How to fix wheel Hop - Page 4 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

JerryMichaels7 · 04-27-2013, 07:29 PM

What extra nannies goes off with pedal dance vs just holding trac control for 3 secs?

vignesh · 08-23-2013, 09:12 PM

Does the car require a wheel alignment if the car hopped. i have read somewhere that wheel hop can throw the alignment off badly.

Grip Ronin · 08-26-2013, 01:57 PM

the wheel hop comes from the traction link that stops the rear knuckle from moving forward and back. we need a solid link to hold a little pressureon it, but the bushing for that is pressed into the knuckle itself so not a easy swap. I hate wheel hop. I get it on drag tracks and wet days

Calum · 08-26-2013, 02:36 PM

Quote:

Originally Posted by Grip Ronin

the wheel hop comes from the traction link that stops the rear knuckle from moving forward and back. we need a solid link to hold a little pressureon it, but the bushing for that is pressed into the knuckle itself so not a easy swap. I hate wheel hop. I get it on drag tracks and wet days

This might be of interest.
http://www.whiteline.com.au/product_..._number=W63414

mike the snake · 08-26-2013, 03:57 PM

I watched a vid of the rear diff moving around with the stock bushings. As much as the diff deflects I would say that shoring up the diff with stiffer bushings would go a long way towards reducing or eliminating wheel hop.

Dipstik-sportech · 08-26-2013, 04:00 PM

I have whiteline diff mounts in my car while they did help the hop is still there.

civicdrivr · 08-26-2013, 08:38 PM

Quote:

Originally Posted by Dipstik-sportech

I have whiteline diff mounts in my car while they did help the hop is still there.

What about the subframe bushings?

Sent from my Nexus 4 using Tapatalk 2

Dipstik-sportech · 08-26-2013, 08:46 PM

Quote:

Originally Posted by civicdrivr

What about the subframe bushings?

Sent from my Nexus 4 using Tapatalk 2

Did those too, no effect

Calum · 08-26-2013, 11:19 PM

Quote:

Originally Posted by Dipstik-sportech

Did those too, no effect

What air pressure are you running in the tires? What tires?

Have you tried an FRS to see if they have the same problem and/or to the same degree?

Dipstik-sportech · 08-26-2013, 11:21 PM

Stock tires 33psi. Mickey Thompson drag radials 17psi at the track

Calum · 08-27-2013, 08:49 PM

Quote:

Originally Posted by Dipstik-sportech

Stock tires 33psi. Mickey Thompson drag radials 17psi at the track

And your getting wheel hop with both? I've got my stock tires at 38 psi and I haven't noticed any wheel hop.

The MT DR shouldn't have much spring rate to them. The last time I ran DR's I was down at about 12 psi, but that was awhile ago and a completely different setup. I think I ended up with about 11.5 on the drivers side and 12.5 on the passenger side when cold. The Quaife LSD wasn't enough to offset the horrible track prep at the local track and the drivers side always seemed to let go first. This was enough for me to be able to side step the clutch at 5800 rpm and still hook. The car was gutless, but man it was fun to watch people's faces when they realized a stock looking Neon just cut a 1.9 60.

/ramble

Dipstik-sportech · 08-27-2013, 09:26 PM

Lol. I barely get hop with the dr's. I think it has to do with the low first gear ratio not allowing enough wheel speed to fully break traction. If I use launch control in second gear there's no hop just tire smoke lol

Grip Ronin · 08-28-2013, 02:48 PM

Quote:

Originally Posted by Calum

This might be of interest.
http://www.whiteline.com.au/product_..._number=W63414

hmm not bad I'm goinna have to take a look under my car

mike the snake · 08-28-2013, 06:42 PM

Do the subframe bushings move that much? In the under-car vid I watched, I could see the diff itself moving a BUNCH, but I couldn't see the subframe bushings move at all.

I know on my BMW 135i, it made a Huge difference, and was the first thing anyone did when improving the suspension. The 135i subframe moved over an inch with stock bushings, but the BRZ/FRS subframe I couldn't see it moving at all.

08-26-2013, 01:57 PM	#45
Grip Ronin The Mechanic Join Date: Mar 2012 Drives: Civic Turbo,FR-S Location: NJ Posts: 928 Thanks: 130 Thanked 171 Times in 119 Posts Mentioned: 2 Post(s) Tagged: 1 Thread(s)	the wheel hop comes from the traction link that stops the rear knuckle from moving forward and back. we need a solid link to hold a little pressureon it, but the bushing for that is pressed into the knuckle itself so not a easy swap. I hate wheel hop. I get it on drag tracks and wet days __________________ IG-Joey_Soul Progress Thread Ported billet 20G

08-26-2013, 04:00 PM	#48
Dipstik-sportech Senior Member Join Date: Oct 2012 Drives: 2013 BRZ satin white pearl sportech Location: Thunder Bay Ontario Canada Posts: 1,813 Thanks: 842 Thanked 911 Times in 576 Posts Mentioned: 43 Post(s) Tagged: 0 Thread(s)	I have whiteline diff mounts in my car while they did help the hop is still there. __________________ 2013 SWP BRZ sportech. 11.11sec@129.01mph, 511whp on e70. FullBlown base kit, FullBlown built 9.5:1 engine, GTX3076R GEN2 turbo, 1700cc Bosch injectors, FullBlown flex fuel kit, FullBlown radiator and oil cooler, FullBlown custom 3" dual exit exhaust, act xtreme clutch, whiteline diff and subframe inserts, BC Racing coilovers, hotchkiss 18mm rear sway, is300 3.73 differential ... Never finished

08-26-2013, 11:21 PM	#52
Dipstik-sportech Senior Member Join Date: Oct 2012 Drives: 2013 BRZ satin white pearl sportech Location: Thunder Bay Ontario Canada Posts: 1,813 Thanks: 842 Thanked 911 Times in 576 Posts Mentioned: 43 Post(s) Tagged: 0 Thread(s)	Stock tires 33psi. Mickey Thompson drag radials 17psi at the track __________________ 2013 SWP BRZ sportech. 11.11sec@129.01mph, 511whp on e70. FullBlown base kit, FullBlown built 9.5:1 engine, GTX3076R GEN2 turbo, 1700cc Bosch injectors, FullBlown flex fuel kit, FullBlown radiator and oil cooler, FullBlown custom 3" dual exit exhaust, act xtreme clutch, whiteline diff and subframe inserts, BC Racing coilovers, hotchkiss 18mm rear sway, is300 3.73 differential ... Never finished

08-27-2013, 09:26 PM	#54
Dipstik-sportech Senior Member Join Date: Oct 2012 Drives: 2013 BRZ satin white pearl sportech Location: Thunder Bay Ontario Canada Posts: 1,813 Thanks: 842 Thanked 911 Times in 576 Posts Mentioned: 43 Post(s) Tagged: 0 Thread(s)	Lol. I barely get hop with the dr's. I think it has to do with the low first gear ratio not allowing enough wheel speed to fully break traction. If I use launch control in second gear there's no hop just tire smoke lol __________________ 2013 SWP BRZ sportech. 11.11sec@129.01mph, 511whp on e70. FullBlown base kit, FullBlown built 9.5:1 engine, GTX3076R GEN2 turbo, 1700cc Bosch injectors, FullBlown flex fuel kit, FullBlown radiator and oil cooler, FullBlown custom 3" dual exit exhaust, act xtreme clutch, whiteline diff and subframe inserts, BC Racing coilovers, hotchkiss 18mm rear sway, is300 3.73 differential ... Never finished

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04-27-2013, 07:29 PM	#43
JerryMichaels7 Senior Member Join Date: Mar 2013 Drives: Whiteout FRS Location: South, Ga Posts: 348 Thanks: 19 Thanked 144 Times in 80 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	What extra nannies goes off with pedal dance vs just holding trac control for 3 secs?

08-23-2013, 09:12 PM	#44
vignesh Engineer Join Date: Jul 2012 Drives: WRB 2022 Subaru Brz Location: Toronto/Michigan Posts: 226 Thanks: 30 Thanked 55 Times in 32 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Does the car require a wheel alignment if the car hopped. i have read somewhere that wheel hop can throw the alignment off badly.

08-26-2013, 03:57 PM	#47
mike the snake Senior Member Join Date: Jul 2013 Drives: 2013 BRZ Location: Norcal Posts: 1,592 Thanks: 1 Thanked 623 Times in 378 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	I watched a vid of the rear diff moving around with the stock bushings. As much as the diff deflects I would say that shoring up the diff with stiffer bushings would go a long way towards reducing or eliminating wheel hop.

08-28-2013, 06:42 PM	#56
mike the snake Senior Member Join Date: Jul 2013 Drives: 2013 BRZ Location: Norcal Posts: 1,592 Thanks: 1 Thanked 623 Times in 378 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Do the subframe bushings move that much? In the under-car vid I watched, I could see the diff itself moving a BUNCH, but I couldn't see the subframe bushings move at all. I know on my BMW 135i, it made a Huge difference, and was the first thing anyone did when improving the suspension. The 135i subframe moved over an inch with stock bushings, but the BRZ/FRS subframe I couldn't see it moving at all.

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