SSkeet

Recently I got my car all back together, have done a lot to it, and now at 80mph+ i get a bad vibration, not rpm relevant. I can look over and see the passenger seat shaking/vibrating.

I bought a 12bolt from a guy recently on here and he threw in a "1000hp custom driveshaft" that he had made. I am wondering if maybe the driveshaft is what is causing the shaking? Maybe I need to have it balanced?

Any ideas? I am going to put the stock driveshaft back in as soon as I get the chance...

Silas2k

iTrader: (5)

ya just balance and rotate tires, maybe alignment if that doesnt fix it... good luck to ya, keep us updated hopefully its not the ds

Mr_president

iTrader: (38)

i have the same problem im buying a pst drive shaft look at my thread witch drive shaft dennys racing or carbon fiber.......let me no when you get your prolem fixed

GuitsBoy

iTrader: (4)

Try an pop the rear U joint and spin the driveshaft 180 and see if that helps out. Quick and free to try.

seal

i'm willing to bet its the ds

SSkeet

Well, I noticed 1 thing in particular that MAY be causing it...

After I did the relocation brackets (exactly per instruction), now the rear end is out of square. The left wheel is noticably more forward and the right wheel is noticably more rearward. I wonder if this could be the main culprit?

I think I am going to buy a set of adjustable lower control arms, i think it is a good idea in order to straighten that out anyway.

An other ideas?

RW99

I have the 80 mph vibe, although I'd call it minor. See setup details in sig.

I had U joints inspected (OK) and driveshaft replaced (with the LPE DS), but I still have the vibe. It feels like driveline because it is most noticible when I give the car a little gas at that speed. Once I let off the gas, the vibe disappears... although the engine rpm and vehicle speed are virtually the same. Not sure what's causing it. I'm going to a 9" soon, though, and throwing in an adjustable panhard... predict it'll be gone after all that.

Other ideas?

transam1998

iTrader: (5)

I had a vibration on my driveshaft that started at about 110 mph after my 12 bolt install. When I looked at the driveshaft, I have a weight on the front that has been knocked off. Need a balance

RollinSScamaro

iTrader: (25)

same prob with my DS.. the yokes aren't; completely inline though.. it is getting fixed soon and hopefullt it goes away.. I think i might save for a CF DS later down the road though.. getting a lot of good feedback on them lately! especially pst!