Tire hop normal when launching an sti??

Swine · 11-19-2005, 12:28 AM

I went to the track recently. I was getting some pretty serious tire hop, just wanted to know if this is normal. I tried many launching techniques including slowly slipping the clutch to launching the hell out of it, never managed better then a 1.88(cobb stg2). Temp was in the high 30's using stock re-070's.

My brother was out there in his cammed evo on fuzion tires and was able to cut a 1.77. I never really here anyone mention massive wheel hop like i was experiencing. Wheels would hope when ever the tires were spinning...is this normal?

***Digitalfiend*** · 11-20-2005, 11:38 AM

No this is not normal and can be very bad for the car. If you feel serious wheel hop, let off. I've heard others mention occasional wheel hop but I've never experienced it myself, dragstrip or on regular asphalt.

Tire pressure plays a huge part in what happens. What are you running?

Stee · 11-20-2005, 12:21 PM

Do yourself a huge favor and purchase the Kartboy rear diff inserts or the Group N rear diff mount. The group N mount is just an exact replacement mount with very hard rubber bushings. The Kartboy rear diff inserts are polyurethane and half of the price. It makes launching much more predictable and really reduces or eliminates rear wheel hop.

Swine · 11-20-2005, 03:21 PM

Good to know, thanks for the advice.

About half way through is an in-car vid of the one of the worst launches...check it out -> http://media.putfile.com/Aspeed

Ugh...

***Digitalfiend*** · 11-20-2005, 03:28 PM

That has to be the most painful launch I've ever seen. Bup-bup-bup-bup-bup-bup...OW.

What tire pressure were you using and what DCCD setting?

WE_R_ND · 11-20-2005, 03:42 PM

Was the other car an Audi?

Swine · 11-20-2005, 07:03 PM

Yeah, a 1.8t A-4...its one of the guys who works at APR who was hanging out with us. Stage 3 with a disco potato(gt-28rs). 12.9 @106-107 on pump gas...fastest apr stg3 1.8 a-4t on pump.

DCCD was on auto.

11-19-2005, 12:28 AM	#1
Swine Professional STI Racer Car: 02 Aspen White WRX Fav Mod: wrx-->sti Location: Alpharetta,Ga-Auburn,Al Posts: 705 IWSTI Addict since: May 2005 Trader Rating: (2)	Tire hop normal when launching an sti?? I went to the track recently. I was getting some pretty serious tire hop, just wanted to know if this is normal. I tried many launching techniques including slowly slipping the clutch to launching the hell out of it, never managed better then a 1.88(cobb stg2). Temp was in the high 30's using stock re-070's. My brother was out there in his cammed evo on fuzion tires and was able to cut a 1.77. I never really here anyone mention massive wheel hop like i was experiencing. Wheels would hope when ever the tires were spinning...is this normal? This ad is not endorsed by this member. Please register or login to hide this ad. Last edited by Swine; 11-19-2005 at 12:32 AM.

11-20-2005, 07:03 PM	#7
Swine Professional STI Racer Car: 02 Aspen White WRX Fav Mod: wrx-->sti Location: Alpharetta,Ga-Auburn,Al Posts: 705 IWSTI Addict since: May 2005 Trader Rating: (2)	Yeah, a 1.8t A-4...its one of the guys who works at APR who was hanging out with us. Stage 3 with a disco potato(gt-28rs). 12.9 @106-107 on pump gas...fastest apr stg3 1.8 a-4t on pump. DCCD was on auto. This ad is not endorsed by this member. Please register or login to hide this ad.

New To Site?	Need Help?	More
REGISTER FOR FREE! IWSTI Rules/Signature Rules Create a Member Journal Bookmark IWSTI Tell your friends about IWSTI	Frequently Asked Questions Did you forget your password? Make a suggestion or report a bug Mark Forums Read Contact Us	Member Journals Forum Pictures & Photography Forum GR Series (08+) Marketplace GD Series (03/04-07) Marketplace Hot eBay Deals Forum Beyond Off Topic

11-20-2005, 11:38 AM	#2
*Digitalfiend* Super Moderator Car: 08 DGM STI Fav Mod: My wife :) Location: Brooklin, Ontario Posts: 5,842 IWSTI Addict since: Oct 2003 Trader Rating: (0)	No this is not normal and can be very bad for the car. If you feel serious wheel hop, let off. I've heard others mention occasional wheel hop but I've never experienced it myself, dragstrip or on regular asphalt. Tire pressure plays a huge part in what happens. What are you running?

11-20-2005, 12:21 PM	#3
Stee Spec C Club Car: 2008 Fitrari Red Fav Mod: Getting 40mpg Location: North Jersey Posts: 1,534 IWSTI Addict since: Jan 2004 Trader Rating: (8)	Do yourself a huge favor and purchase the Kartboy rear diff inserts or the Group N rear diff mount. The group N mount is just an exact replacement mount with very hard rubber bushings. The Kartboy rear diff inserts are polyurethane and half of the price. It makes launching much more predictable and really reduces or eliminates rear wheel hop.

11-20-2005, 03:21 PM	#4
Swine Professional STI Racer Car: 02 Aspen White WRX Fav Mod: wrx-->sti Location: Alpharetta,Ga-Auburn,Al Posts: 705 IWSTI Addict since: May 2005 Trader Rating: (2)	Good to know, thanks for the advice. About half way through is an in-car vid of the one of the worst launches...check it out -> http://media.putfile.com/Aspeed Ugh...

11-20-2005, 03:28 PM	#5
*Digitalfiend* Super Moderator Car: 08 DGM STI Fav Mod: My wife :) Location: Brooklin, Ontario Posts: 5,842 IWSTI Addict since: Oct 2003 Trader Rating: (0)	That has to be the most painful launch I've ever seen. Bup-bup-bup-bup-bup-bup...OW. What tire pressure were you using and what DCCD setting?

11-20-2005, 03:42 PM	#6
WE_R_ND Spec C Club Fav Mod: Track Time Location: Des Moines, IA Posts: 2,267 IWSTI Addict since: Jan 2004 Trader Rating: (0)	Was the other car an Audi?