Not sure how many of you are using these, i thought i would give them a shot. Supposedly the spring rates are based off of the 06+ Z and they claim a 15% stiffer rate, sways are made by Hotchkis for COBB:



I will be putting on the sways this weekend, springs and struts are still waiting on additional suspension pieces before I put them on.

Any suggestions on calculating the rate, I have the following measuresments, but i have no clue what the material is for a proper measurement:

Front
wire diameter = .55-in
mean coil diameter = 3.95-in
free coils = 5
Using this it measures 436-lbs/in

Rear
wire diameter = .60-in
mean coil diameter = 4.465-in
free coils = 4
Using this it measures 535-lbs/in

 

nice set of mods there..i never heard of Cobb

 

looks good, enjoy the install and drive afterwards.

 

really? they are really well known. they have a white R35 GT-R that has been at a lot of the time attacks. They are based in socal.

 

I think the lack of knowledge with Cobb is that they have been dominately Subaru-focused, up until recently. I wonder if they felt the market was going to slow down too much to be focused on one brand and decided to spend their knowledge and investment on other platforms to diversify their customer-pool. They are best known for their Acess-port ecu-flashing device/service but they make suspension and engine goodies as well.

As for the install, I'm looking forward to it a lot. A few years back I helped a friend do sways on his 350Z, the change afterwards was amazing. They have to be best bang for you buck suspension mod. The only thing I'm not looking forward to is siezed bolts, I live in MD and bought the car from a guy in PA, so weather-siezed bolts could be an issue.

Not to brag, but I got these brand new for $310, retail for the set is $575, thanks ebay!

 

I just installed my sways and tokico d-spec suspension and had the lower bolts on the rear shocks seize.You cant heat them up and i let them soak for at least and hour and they still didnt come out so i had to get 2 new(cant remember what they are called)i think hub bearing carriers to the tune of $400 bucks.

 

well its all done and to my surprise I didn't have a single issue with a single mounting point. I was worried the end-link nuts would put up a fight but they did not.

Taking my time and being thorough I manage to finish up the front and rear in just over an hour. I was on a 4-post lift so everything was rather easy to get to and remove.

The Cobb instructions (Hotchkis supplied) were a little off, they suggest using a 14mm socket on the front end links, but they require a 17mm. The rear sway does take some fanagling to get in and out, but its still easier than removing the exhaust or any other suspenion components.

I'm getting rained on by TS-Hanna so I'll snap some pictures later and give it a good drive when its dry out. After I installed them, I did have a small chance of testing them and it was def flatter.

 

front from the top:


front from wheel well:


rears:

 

How's the ride? Can you give us some review of this Cobb SB? By the way, is there any issue such as knocking sound or something?

 

I have had the Cobb sways on my sedan since January 2008 and they work great. No knocking. They are identical to my Hotchkis except for the color. Even the bag of installation parts is the same. You will like the Cobb bars.

 

yeah what he said, I can't complain. the bars are made by Hotchkis, so you know you're getting a proven bar system. The only thing i did different in the install is I used some teflon tape in between the bar and bushings. It's a racer trick to not require regular greasing, but I did use most of the supplied grease anyhow.

I do have some knocking in the rear, but I suspect it may have to do with me not tightening the endlinks all the way (or too much) as I didnt use a torque wrench. I'll try to play with that this weekend if time affords.

 

I've got the Hotchkis sway bars and my rear end link mount snapped off. Just be aware that an aggressive sway setting may put too much stress on the factory mount.

 

^^ Oh man...can you post a picture? How did you fix it?