I when drag racing this weekend and forgot to soft down my suspension set up in front...It's a daily driver track'n autocross purpose build car.

As I launch of the starting line, the front end start jumping very hard... As I was building speed, I started feeling something was wrong... I told my self you broke or bend something for sure. At first it felt like and unbalance tire but I switch them from back to front both side and it keep doing it. The car start shaking around 50mph. I don't feel it so much in the steering. It's the car that shakes a lot... Otherwise the shocks look fine, coils not cracked... I did 30 miles like that on my way back from track and I feel sometimes like the vibration was going away then come back. I't worst when i'm accelerating. The car dosen't pull either one side on accelaration or hard braking...

What could be wrong there? Tie rod? Ball joint? Axel driving shaft? Wheel bearing? Could I have blown the alignment?

Here's my set up:

-koni yellow+ gc (340 spring rate)
-energy bushing (front sway-bar + shock up n' down)
-energy engine mount bushing
-Enkei RPF1 + Hankook RS2 z212
-Brembo premium slotted + braided lines+ motul RBF 600

Anyone can help?

 

it could be a fuxored up axle if it vibrates only on acceleration...

does it do it at all speeds?? or just 50 mph??

 

One or both of your inner CV joints are bad. Bank on it.

 

What do you mean by "bank on it" Sorry but I usually speak french. I'm bilingual but, this is the first time I heard that expression... And for the 2 nd post, yes I can feel something at low speed but nothing to write to your mom! It really start to get worst at around 40-50 mph...

Cv joint... I'm gonna check that tomorrow...

 

I have an other question for you... Let say it's the cv... Can I fix it or I have to replace it? If I have to replace... What would you buy? OE or after market? And BTW, I know ITR and GSR cv are interchangeble... Is there other OE cv that fit there... I would prefer an OE over an after market or rebuilt...


Modified by maxogsr at 6:43 PM 10/10/2006

 

Thank you, You were right on it...inner cv joint driver side. The bearing is fu..k up!... I know what i'm gonna do this weekend...

Have a good one!

 

Bank on it = I guarantee it's true

Good job finding the problem.