mel3535

Maybe someone can help me answer what could be a silly question. I had a shop install my coilover but the front ride right is too low and I wanted to save some money and try to do ride height changes my self. How do I make ride height adjustment other than changing preload?

sccaGT1racer

Count the number of turns and do both left and right front equally.

Pounder

I would tighten the jamb nut on the end link, and 35 psi is way to hard for the Michelin SS ??????

C5 for life

Cesar@TPS

Yeah its a Night and day difference whether using the car for track or street it rides much better.

smitty2919

For those that are running the autocross/road racing spring rates 550r/650rr springs...how is the ride quality compared to factory Z06 components? My 03Z at 58k mi is somewhat firm but positive and I like it for daily driving.

Are you guys running bigger swaybars as well, if so what combo?

My goal for next season was going to be 18x11 square with 315 Rival S, HP+ brake pads and swaybars and keep stock Z06 springs/shocks...but at this price point of Aldans, it's hard to argue the jump.

The goal FOR ME is NOT sacrificing daily driver ride height (stock) OR ride comfort. I would MAYBE lower the car 1/4" at most since I want to maintain a high level of DD capability. I would entertain a swaybar upgrade with "stock like" spring rates for the Aldans if the shocks are able act like stock Z06 shocks AND become firmer for the occasional autocross.

I went too aggressive on my last car (95 Camaro Z28) suspension wise that I no longer want to go too "race car" with my Z06.

2k2wranglerx

no bs but mine rides awesome. Positive but not jarring. I'm running hotchkis sways

smitty2919

Thanks 2k2wranglerx.

TomsWheels, any input compared to stock and or Koni setup?

Tomswheels

smitty2919

Thanks a lot Tomswheels. You wouldn't happen to have rough fender heights for your typical autocross setup would you?

I just measured my relative fender height for a stock 03 Z06 and below is the following measurement:
26 3/8 Front
27 5/8 Rear

Also, anyone know if these are a monotube or twin tube design?

2k2wranglerx

I don't have a Z06. but my before and afters

Front stock


front with aldans


rear stock


rear with aldans

smitty2919

Thanks a lot. It won't matter if it's a Z06 or not...

I ended up finding some Koni shocks at a good price so those will go on this weekend along with cutting front bolt bushings to get the height I want.

I find suggestions for tire to fender gap clearance of "2 finger front, 3 finger rear" which translates to ROUGHLY 1.5" front and 2.25" Rear and 1/4 to 1/2" rake. For my purposes this will be a good starting point. I should be able to hit this modifying the front bolts and lowering enough on the rear bolts.

IRON MAIDEN

Trying to get my Vette back on the road. Been sitting on my Kwik Lift for over a year. Installed Aldans over a year ago and the car has just sat as I was trying to figure out my wheel situation. HRE wheels were leaking. Having my tires mounted on a backup set of wheels I have, Cray Mantas. Before I stopped, I was struggling with the car being too low. I may need Aldan to send me taller upper rear mounts but for now, want to adjust the fronts. What is the recommended preload for the fronts? I want to set the preload there, drop it and see where it sits, then add preload from there to raise it up.

smitty2919

I don’t know how the Aldans are but preload them to where the spring is not loose at full rebound.

Then adjust from there. If it’s too high then you need to lower the perch (reduce preload) and then you have the spring loose at full rebound. Nature of higher rate Coilovers. If the spring is loose at rebound it’s not the end of the world. However you don’t want a 2” gap between the spring and perch at rebound lol.

If your springs are meant to be stock-ish spring rates then this shouldn’t be a big deal. When you jack up the rates the spring gets shorter.

2k2wranglerx

I believe it was 1/4" preload... mine came with instructions.

I autoxed it on them for the first time a week ago and the car is epic. I was over 2 seconds faster than my buddys stock spring c6 with the same tires.

IRON MAIDEN

Hoping to find specific info on the Aldans from some experienced owners. I switched from Pfadt Featherlites that I had for many years. Never liked them as it was too rough of a ride around my local roads. Hoping these Aldans will be give me some ride quality back.

Edit. Thanks. That's what I needed. Hopefully I can get them dialed in. What are you dampener settings? And did you struggle with the rear? Think I went well over an inch of preload and it's still too low. Dialing in my fronts may help the rear as well. Wish I had two of those spanner wrenches.

Bandit 00C5

This is for you C5 guys who are struggling a bit with rear ride height. I got my initial set of Aldans with the 500/550 spring set and their revised short shock.

Well, put them in the car and the rear was way too low with the recommended preload. I had to dial in close to 2 inches of preload to get the rear off the ground. As I suspected the rear was bouncing like a pogo stick and the coils were in total bind.

As I live in CA and Aldan is up the road I called them and they agreed to send me another set with 650 springs. I received those but unfortunately one was missing a thrust bearing.

I put another call in to Aldan and spoke to Gary Nelson. I explained the situation and told him I would bring them up for the thrust bearing install. He agreed and away I went. Well he came out and looked at the car and said he wanted to try something else. Gary put a 1 inch longer lower shock mount to go with the 650 springs.

Good news. Tonight I got them put in. I started with a 1/2inch preload but this raised the rear way to high. After measuring and finding I needed to come down about an inch I lowered the spring perch about 3/4 of inch. This left no preload on the spring and let in hang about 3/8inch. I set the rebound adjustment at about 3o’clock, put her back in the ground and all is set. Ride height form top of quarter to ground is about 27 3/8inch. She rides fantastic.

The longer 1 inch lower clevis might be the answer for some of you guys. Don't be afraid of the 650 springs. Ride is good. My friend says it rides like his stock C5.

Hope this might help some of you.

IRON MAIDEN

Although a stiffer spring wasn't offered, they did offer me a taller clevis mount to raise the rear. With the amount of preload I have on my rears now, I'm worried I've lost any shock travel. Plan to tear the engine down this spring for heads/cam.... may just send the rears back to Aldan for the work while the car is down.

2k2wranglerx

How high does it sit now?

Here's mine without any of that next to my buddy's C6... i didn't think mine was low in the back



and on it's own

Bandit 00C5

Look thru your wheels or under the car and see how much space you have between the coils. If you are like mine was you are probably in bind with little shock travel.

Our cars are dang near twins. Getting ready to add the same splitter as yours.

Im about 2 fingers off the tire. With the 550 springs and revised short shock I had to run the preload all the way up to get the rear off the tire.