Wheel hop

m4a1mustang · 05-20-2009, 08:28 PM

Anything out there to help with this yet?

I know '03 Cobras had major wheel-hop problems that were mostly solved with poly bushings.

ChrisSlicks · 05-20-2009, 09:08 PM

Quote:

Originally Posted by m4a1mustang

Anything out there to help with this yet?

I know '03 Cobras had major wheel-hop problems that were mostly solved with poly bushings.

I had a huge problem with this in my G35 especially with sticky tires mounted. Haven't really had a problem with the Z so far.

mspeasl · 05-20-2009, 11:08 PM

Quote:

Originally Posted by m4a1mustang

Anything out there to help with this yet?

I know '03 Cobras had major wheel-hop problems that were mostly solved with poly bushings.

It's a bitch isn't it. I could not believe how bad it was in my 6sp. When I test drove an automatic it didn't have the wheel-hop problem. But I guess that the lower RPM starts probably helps....................

wstar · 05-20-2009, 11:18 PM

Yeah on my 7AT I haven't had any wheel-hop issues. I mostly attributed that to the independent rear suspension on this car. My last car had a solid rear axle, and it was a bitch to tune wheel hop issues out of the suspension, esp when stiffening up the rear anyways. It would always hop given an uneven launching surface of course.

m4a1mustang · 05-21-2009, 06:33 AM

I was at the drag strip yesterday and was fighting it all night long. Seems like you really can't get away from it unless you decide to just bog your launches. I've even had a little bit of it accelerating out of tight corners.

Just hoping there's a quick and simple fix like there was for the '03 Cobra IRS.

Last night was frustrating, though. Really wish I had a Ford 8.8" live axle and some ET Streets on my Z last night. Oh, and some really soft front springs.

ResIpsa · 05-22-2009, 08:16 AM

I have heard that a solid rear differential bushing helped on 350Z's and G35's.

m4a1mustang · 05-22-2009, 08:26 PM

I wonder when we'll see this stuff out for the 370.

m4a1mustang · 05-22-2009, 08:34 PM

Quote:

Originally Posted by wstar

I mostly attributed that to the independent rear suspension on this car.

I think it's the other way around. My Mustang was really as smooth as butter on a hard launch, but the Cobras had and their IRS had a hell of a time putting the power down without the new bushings to help.

It could just be the design of the suspension, though, not necessarily whether it's IRS or a solid rear, because wheel hop is a huge issue leaving the pits in NASCAR and under heavy braking/accelerating at road course tracks. They have solid rears but use an old-school truck-arm set up.

ChrisSlicks · 05-22-2009, 08:45 PM

I think you're right, I think it has more to do with the suspension geometry than anything else. On a sticky track with sticky tires some of the rotational force gets translated to vertical movement, and depending on the suspension this may allow the axle to be pushed up and compress the spring.

SoCal 370Z · 05-22-2009, 10:38 PM

Don't know whether this is an automatic or stick, but here is some wheel hop (starting at the 0:44 marker):

[YOUTUBEHQ]H26LXPp9jEA[/YOUTUBEHQ]

m4a1mustang · 05-22-2009, 10:52 PM

Sounded like an M6. God I hate wheel hop.

GreenJalapeno · 05-25-2009, 12:55 AM

has anyone broken anything from wheelhop? (for the 370)

mspeasl · 05-25-2009, 08:28 AM

Stick shift

m4a1mustang · 05-25-2009, 08:46 AM

Quote:

Originally Posted by GreenJalapeno

has anyone broken anything from wheelhop? (for the 370)

Right now I don't think the stock tires are sticky enough to really shock anything hard enough to break it. I'd be worried, though, if somehow I fitted some ET Streets on the back and was hopping like crazy. Those things will bite and could easily snap an axle.

Modshack · 05-25-2009, 12:11 PM

Quote:

Originally Posted by GreenJalapeno

has anyone broken anything from wheelhop? (for the 370)

I can tell you, the Corvette guys (particularly the '05 C6) explode rears on a regular basis from wheel hop. Poly trans/Dif mounts and better shocks seem to minimize this..

05-20-2009, 08:28 PM	#1 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	Wheel hop Anything out there to help with this yet? I know '03 Cobras had major wheel-hop problems that were mostly solved with poly bushings. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

05-20-2009, 11:18 PM	#4 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	Yeah on my 7AT I haven't had any wheel-hop issues. I mostly attributed that to the independent rear suspension on this car. My last car had a solid rear axle, and it was a bitch to tune wheel hop issues out of the suspension, esp when stiffening up the rear anyways. It would always hop given an uneven launching surface of course. __________________ 7AT Track Car! Journal thread / Car setup details

05-21-2009, 06:33 AM	#5 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	I was at the drag strip yesterday and was fighting it all night long. Seems like you really can't get away from it unless you decide to just bog your launches. I've even had a little bit of it accelerating out of tight corners. Just hoping there's a quick and simple fix like there was for the '03 Cobra IRS. Last night was frustrating, though. Really wish I had a Ford 8.8" live axle and some ET Streets on my Z last night. Oh, and some really soft front springs. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

05-22-2009, 08:16 AM	#6 (permalink)
ResIpsa Track Member Join Date: Apr 2009 Location: Virginia Posts: 564 Drives: 09 RACING HEN Rep Power: 337	Rear Diff Solid Bushing I have heard that a solid rear differential bushing helped on 350Z's and G35's.

05-22-2009, 08:26 PM	#7 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	I wonder when we'll see this stuff out for the 370. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

05-22-2009, 08:45 PM	#9 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 653	I think you're right, I think it has more to do with the suspension geometry than anything else. On a sticky track with sticky tires some of the rotational force gets translated to vertical movement, and depending on the suspension this may allow the axle to be pushed up and compress the spring.

05-22-2009, 10:38 PM	#10 (permalink)
SoCal 370Z A True Z Fanatic Join Date: Feb 2009 Location: US of A Posts: 2,842 Drives: Answers Rep Power: 33	Don't know whether this is an automatic or stick, but here is some wheel hop (starting at the 0:44 marker): [YOUTUBEHQ]H26LXPp9jEA[/YOUTUBEHQ] __________________ ( Click to show/hide ) Why I NEVER say NO to the Panda Lou Fusz!!!

05-22-2009, 10:52 PM	#11 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	Sounded like an M6. God I hate wheel hop. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

05-25-2009, 12:55 AM	#12 (permalink)
GreenJalapeno Enthusiast Member Join Date: May 2009 Location: La Canada Flintridge Posts: 355 Drives: 10 Nissan 370Z PW M6 Rep Power: 290	has anyone broken anything from wheelhop? (for the 370)

05-25-2009, 08:28 AM	#13 (permalink)
mspeasl Enthusiast Member Join Date: Jan 2009 Location: Decatur, IL Posts: 367 Drives: Red M6 Sport/Touring Rep Power: 268	Stick Stick shift __________________ Mspeasl - Central Illinois 2009 - Solid Red, M6 '370' Sport/Touring (Delivered 7 April 09)

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