Hi All,

I just had a set of used JIC Cross coilovers installed that I purchased from Al Norton. Great Porsche community member that helped me get all the things that I needed and spent the extra time to help me go through the install. I would vouch for this member anytime. After the suspension was installed by Eurotire (recommended by other members on this board and provided great service) I am getting clunking only in the rear of the car. I have read through posts and it seems that I am getting one of two answers. 1. This is normal for our cars because it is metal to metal contact between the pillowball mount and the frame of the car. 2. Tighten the main bolt and three bolts that hold the shock to the car.

My question is how can I tighten the main bolt and three separate bolts? What tools should I use? Do I need an impact wrench or is elbow grease enough? I have heard of people spraying WD-40, White Grease. Will a combination of these work? Do I need a torque wrench to tighten these bolts?

TIA

 

make sure the sway bar end links are tight. mono ***** should not make noise but transfer the noise better. I would take it back to the installer before messing with it yourself.

 

I wouldnt worry about what tools you need. You should take it back to Eurotire who installed it and breif them on the problem, they might have a solution or use your suggestions. I had a similar problem when I installed my JIC's however it was in the front, and once i tightened the main bolt it was gone and has not came back.

 

+1 clunk is not normal. Like already said, probably a sway link or something loose...

 

Just for reference you should never use an impact gun on the main nut that holds the shock mount to the strut shaft on adjustable shocks - you can damage the adjustment mechanism.

 

Did you install adjustable rear sway bar drop links. This tend to transmit more noise.

 

Rear Adjustable Sway Bar Links were not installed. Could this perhaps be the source of the noise? I am using the stock adjustable sway bar links right now. Would swapping these out for adjustable sway bar links get rid of the noise?

TIA

 

Had the same thing happen to me with my JIC's when I had my '03 996TT. Ended up being a manufacturer defect of the upper mount. Had to take the right rear out and have JIC (through Vivid Racing) send me a replacement pillowball.

 

Same for me, but in the front. It was the upper spring plates. They used the wrong ones on a couple of batches. When you remove the "noisy shock", remove the upper spring plate. Where it meets the pivot plate, there will be scarring on both plates as a result. You have to remove the shock to see it.

The JIC guys now, are not the ones who developed the original ones. They are still dealing with Porsche guys who have recently installed them. They learned from Akram and myself, and should be fairly well versed in how to correct it, now.

Good luck!

 

I am getting the same problem...Hey OP, did you ever resolve the problem?

what was it?

 

I also want to know, Im having the strange noise but in the front

 

My clunk is in the rear.....I wonder if a simple tightening of the main bolt is all that it needs.....hopefully!

 

OP Here - Did all that.

- Sprayed WD-40 all over the shock, top-mount
- Replaced drop links
- Replaced top mount
- Replaced bearing in top mount
- Replace spring.
- Tightened top main nut.

Solution? I went with KWV3's. No more clunking.
JIC went kaput or I would've sent it in for repair.

 

Oh no!

So my coilover is defective?

 

I wouldn't say it's defective. My personal opinion is that the coilovers suffer from poor build quality. They didn't always clunk. It happened maybe a few hundred miles after I started driving it.

- I literally threw a thousand or two trying to solve the problem. Maybe your problem is not the shock? maybe it's something hitting a control arm?

All I know is I replaced with KW's, RSS upper control arms, RSS lower control arms, ERP tie steer rods at the same time.

No knock, clutch, rattle anything.