I have a question about lowering spring height vs. (old) stock spring height. I purchased what I believed were a used set of Suspension Techniques linear lowering springs. They have ST Front stickers in front. When I compare the rear pair with my original set, the ST springs are around 3" shorter. Is this normal? I can seem to compress the original springs to the ST springs' height quite easily.

 

ST rear springs on left, original rear springs on right

 

 

Stickers on front springs

 

 

Thanks in advance.

Yes, shorter are normal for sporty springs... they are stiffer and do not compress as much as the softer originals.

FYI http://atlanticz.ca/zclub/techtips/springs/index.html

I just measured one of my Suspension Techniques springs that is out of my car and it is a little less than 11 1/2".

 

I cant remember if that is the front or rear spring but it is a Suspension Techniques spring.

 

and you will not need a spring compressor with these springs.

 

Steve

Edited March 8, 201510 yr by nix240z

That's 2 Steve's that told him that !

Any advice on rear wheel rub? Mine are rubbing when I accelerate, hit bumps, etc... I'm not sure if coilovers can solve this or what but I'd really like to NOT cut the fenders and keep the wheels on. I'm stumped!

Wheel rub sounds like a wheel offset issue or too fat a tire.  Details?

I'm going to shoot you a message.

Any advice on rear wheel rub? Mine are rubbing when I accelerate, hit bumps, etc... I'm not sure if coilovers can solve this or what but I'd really like to NOT cut the fenders and keep the wheels on. I'm stumped!

You can purchase universal Urethane spacers that fit on the strut under the spring. Couple of the big Urethane bushing manufacturers make them. You can also find them at Race shops that handle Circle Track Parts. Either spacers that go under the spring or " Spring rubbers " that go between the coils. Pitstop USA is one of my fave Race Parts suppliers:

 

http://pitstopusa.com/

 

Spring rubbers:

 

http://pitstopusa.com/search.html?q=Spring+Rubbers

 

Universal Spring Spacers:

 

http://www.energysuspensionparts.com/Energy-Suspension-Coil-Spring-Isolators.asp

You can purchase universal Urethane spacers that fit on the strut under the spring. Couple of the big Urethane bushing manufacturers make them. You can also find them at Race shops that handle Circle Track Parts. Either spacers that go under the spring or " Spring rubbers " that go between the coils. Pitstop USA is one of my fave Race Parts suppliers:

 

http://pitstopusa.com/

 

Spring rubbers:

 

http://pitstopusa.com/search.html?q=Spring+Rubbers

 

Universal Spring Spacers:

 

http://www.energysuspensionparts.com/Energy-Suspension-Coil-Spring-Isolators.asp

 

THIS looks like it would do the job and fairly inexpensively as well! I'm going to do some reading on the topic and see what I need. Thank you! I didn't even know these were out there!

I just dealt with the same issues of tire rub on my 1970 240z this week but mine was with OEM springs. I can tell you that coil overs with stiffer springs total took care of this. I have 225/60/14 and have no rub now and I love the ride! I also switched to Bilstein B8 Sport all around, spring rate at 300. Much better handling, no rub, and adjustable ride height. Highly recommended.

Steve