iceman4357

iTrader: (2)

So I am at a bit of a loss on my new Fortune Auto 500 series coil overs. I spent all day yesterday trying to get my ride height set at 25" and I am now thinking something is wrong with the coil overs. Maybe the have a spring mis-labeled or its defective?

Background- I have a set of RE-Amemiya DG5 on the car currently. Ride height is set to 24" all the way around. Suspension is working fine, just wanted a softer coil over setup. Attached are the rears showing that they are set symmetrical to achieve the 24" ride height. Bushings are derlin and new(1500 miles).

Fortune auto has 7" spring and for wishbone suspension, they want you to set preload at 6-7/8" which I did prior to install. After I installed both shocks and tightened everything/put tires on and dropped the car to the ground as a baseline. Both were around 24" ride height. I adjusted the drivers side first to try and get to 25". I unhooked the bottom of the shock and spun it roughly an extra inch(2.75" total delta from the bottom of the pre-load collar to the bottom collar of height adjust). Thinking they should be relatively symmetrical, I did the same to the passenger side. When I bolted all back together, driver side was 24.75" and passenger was 24.25". So I tore it all back apart, going after the passenger side first. I had to extend the passenger side to 3.75" from the pre-load collar to bottom collar. I bolted all back together and put the car on the ground.....somehow the drivers side magically raised to 25" and the passenger side is roughly 24.75".

I am at quite a loss on why I would have the passenger shock more that 1" taller than the drivers side to achieve almost 25" ride height and why adjusting the passenger side would change the drivers. Attached are all of the photos I took. The only thing I can think of is that somehow one of the two springs is bad or mislabeled.

Any suggestions would be greatly appreciated! Someone smarter than me please help. lol.

Eric

you can see the difference in height due to the extra inch I need passenger side to try and get to 25"


driver 1

driver 2

driver 3

passenger 1

passenger 2

passenger 3

silverTRD

iTrader: (37)

Looks like your anti sway bars are still attached. You’ll never get the height the same with them attached because the stock end links are too short when you want to lower your car.

Howard Coleman

iTrader: (6)

it has to be the spring.

since you are currently at only .25 diff right to left if you measure both spring's height while on the ground you will find the diff to be the diff in the height adjustment threads minus the quarter inch.

if you are at 3.75 and 2.75 and you are .25 off there must be a spring height diff of .75.

given equal preload the springs should go back to Fortune.

Fortune should want them back to learn what's up w their product... which i do like.

TeamRX8

iTrader: (2)

You have to disconnect both sway-bars at least on one side as per the the previous response in post #2 because otherwise they’re linking the two sides together and working against the coil-over springs

and no, the adjustments won’t be the same because if you put the car on corner scales you'll quickly see that the weight on every corner is different. The spring function is in lbs/inch. A heavier corner will require more adjustment to achieve the same height as a lighter corner. Even though you’re adjusting them on the same side, each corner is working against the spring load on the cross corner.

I’ll just go ahead and point out that making all the heights equal is a street driver mistake. Unless it’s a seriously prepared race car with all the weight distributed equally then most properly corner-scaled cars will often have a different height at every corner. So what you’re trying to do with the sway-bars connected is skewing everything way off and working against you. What you have to get your head around is doing it that way is not only working one side against the other, but also each cross-corner against each other.