Ways to reduce rebound? or car Jumping?

[ghostuss]

my suspension is too bouncy even on the softest. I have tried some other car with coilovers at the same sping rates, and they are not even close to as bouncy as mine. My friend who drives behind me always claims that I am "all over the road". and it does affect my handling cause when I go airborn in a turn, I feel like my steering just lost response so who knows what might happen one day in one of those mountains.

[idlafie]

Originally Posted by ghostuss

my suspension is too bouncy even on the softest. I have tried some other car with coilovers at the same sping rates, and they are not even close to as bouncy as mine. My friend who drives behind me always claims that I am "all over the road". and it does affect my handling cause when I go airborn in a turn, I feel like my steering just lost response so who knows what might happen one day in one of those mountains.

My suspension is..............(fill in the blank here).............?????
It would help if we knew which one you had installed....
ID

[ghostuss]

It's 9/7 spring rates. HKS hipermax Pro... I didn't know that matters at all except the spring rates right?

[thx247]

Can't adjust rebound?

What sort of tires do you have?

[ghostuss]

oh Shoot can it be tire pressure? I have never checked my tire pressure since the tire shop put the tires on. All I know is it's hella FULL.

It's a 2 way adjustable. Height and damper but how you adjust rebound?

[ghostuss]

Also would spring adjustment matter? I had the springs compressed a little when I was adjusting the height. Does that like increases rebound also? I thought it would only increase spring rate right? I am not very good with this spring rate/ damper rate/ rebound rate thing. Can someone explain it to me or direct me to the page? My goal is to have less hopping around while still have a stiff ride.(less body rolls at corners)

[orion::S14]

Originally Posted by ghostuss

my suspension is too bouncy even on the softest...

There's your problem.

More dampening is needed.

Turn it up to full stiff, and the shocks can better control the springs motion, both rebound an compression.

Try that. It will be stiffer, but less "bounce".

- Brian

[ghostuss]

It's a little better but still kind bad. The wheel will leave the road... I can't really push my car hard cause I dunno when I am gonna be in the air without any traction in a corner.
Seem that not many ppl seem to know well of suspension tuning. All my friend still don't have the right setup yet. I guess that's why Alex from d1 say it's like taking a knife to a gun fight when you go tandom vs Japanese cars.

[orion::S14]

How do you know the wheel is leaving the road?

HKS makes a nice coilover...and that's pretty much all that's causing your issue here, unless you have stock wheels and $25 tires.

You said you preloaded the spring a little...how much (how many inches did you compress it)?

- Brian

[yudalicious]

maybe preload the springs less and see how it feels? Maybe the dampers are just wearing down.

[ghostuss]

Hmm ok I think I found what's wrong. My rear is having bad camber, meaning off alignment. One side is all negative while the other side is So, So. Gonna get some RUCA and some spacers to put in and see if that helps. Also gonna set the tire pressure to 35 cold or 38 hot.

[Maxtype 240]

Originally Posted by ghostuss

Hmm ok I think I found what's wrong. My rear is having bad camber, meaning off alignment. One side is all negative while the other side is So, So. Gonna get some RUCA and some spacers to put in and see if that helps. Also gonna set the tire pressure to 35 cold or 38 hot.

You can afford an expensive set of coilovers but can't spend 5 minutes online to learn how to tune them...

Of all the rebound you've been complaining about b/c you have no idea how to tune a set of coilovers, now you're going to make your tires super stiff w/ 38psi. Unless you're auto-x full-time or trying to make 40mpg or trying to kill yourself when it rains, turn down the psi to 28.

Jesse

[ghostuss]

Originally Posted by Maxtype 240

You can afford an expensive set of coilovers but can't spend 5 minutes online to learn how to tune them...

Of all the rebound you've been complaining about b/c you have no idea how to tune a set of coilovers, now you're going to make your tires super stiff w/ 38psi. Unless you're auto-x full-time or trying to make 40mpg or trying to kill yourself when it rains, turn down the psi to 28.

Jesse

OK ez with the flaming. I did some homework just before I saw the this post and yea I am gonna dig in this weekend to tune them. Found out that preloading the coilovers too much will cause this and also bad alignments. About the tire pressure, that's just what I heard from friends when we were at drift event. It's a drift spec obviously. Anyways I will see if this bounce ness decreases.

[Dream240]

What tire pressure you running right now? You should be at around 30 psi for daily driving, not more than 32. This will affect your bounciness. Also the alignment needs to be done first and foremost. There are a few basics that you should always address BEFORE you start pulling your suspension apart again.

1. Modify suspension = new alignment
2. check to ensure every bolt is tight and each part is mounted properly.
3. Make a list of the things you've modified from their designed spec (spring compression, tire pressure, wheel fitments, any suspension arm alteration)

Little story...for example on #2, I had an alignment done for a new control arm and tie rods, and the fucking shop didn't tighten one of my camber bolts in the front!! My front end was all over the road and I couldn't figure it out! then one day I was doing my brakes and I leaned on the strut and it moved! Whoa...I went back there and chewed them new a-holes.

Start with that and then see where you're at with the ride.

[Phlip]

If all else fails, get yourself a morbidly obese girlfriend... Fat chicks = ballast

[Dream240]

Dude, tried that. They won't fit into the seat!! No shit.....