Suspension change?

[Dragon]

Never use coilover before but if im not wrong
Coilover is something like spring cum absorber, 2 in 1 de

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Your RX8 stock spring and damper is coilover mah.
Coilover is not necessary a aftermarket thing. It is just a kind of spring and damper design.

 

[Dragon]

I was referring more of suspension has absorber, while CO doesn't really have an absorber.

There is a shock absorber or damper in the coilover setup too.

 

[tankgunner]

I was referring more of suspension has absorber, while CO doesn't really have an absorber.

this is a complete set of Tein CO.
which part is not the absorber?

 

[ZhuTou!]

Your RX8 stock spring and damper is coilover mah.
Coilover is not necessary a aftermarket thing. It is just a kind of spring and damper design.

Oh ya hor i forget about my rx8 lol

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[peterchan75]

Usually, it's the shock absorber. There are 4 of them.
1. Car bouncing
2. Rocking
3. Uneven worn tyres

As for the cost, it depend on your model.

 

[li9ht5peed]

Hi guys, would like some advice. My car is around 8 years old and recently it has been shaky/wobbly when driving. Went to do a check and they said suspension is very old already. The spring/coil(?) has worn out and they quoted about S$700+ for 2 pairs.

Is it usually around this price? If no, any recommendations? Cause personally even though old car liao, but don't think will change a new one anytime soon. Am also a female driver, and the shakiness of the car makes me pretty worried

Hmm, aft they told me that, my dad tried to do it and say the suspension really no good. Bt he's also nt sure.
It happens even when I travel around 40-60 leh, that's why worried.

The symptoms are indeed consistent with failing coil springs. Those springs are considered failed when they break.

Take a look at the paintwork on the coils. Are they coming off and the metal is rusting?

Is your car tilting to one side - its not a confirmation, but its one symptom.

When the coils are failing, it looses the ability to resist even minimal out-of-balance centrifugal forces from spinning wheels. New coil springs have sufficient spring rate to resist the load from centrifugal imbalance in wheels up to around 80 km/h. Why 80km/h? These are road cars for street use. If it was an Indy 500 race car on the oval circuit, then the spring rates will be adjusted for 300km/h. And since this is an uncle car - nissan latio, although the spring rate may be the same, the creep resistance will be less. Budget cars, budget springs. So now you got shaking even at 40-60km/h, which is consistent with failing springs. As springs fail, the spring rate goes down, so now it cannot even resist imbalance at 40-60km/h. You might say the wheels were balanced when new. But the fact is wheels slowly go out of balance as the tire wears off. This tiny imbalance can cause significant shaking if your suspension is getting loose.

Coil springs fail like those in your mattresses. You got Ikea, King Koil, Serta, Simmons. Got cheap and super expensive. What is the selling point? The springs right? Expensive coil spring mattresses are not suppose to sag, or in engineering term - creep.

If you were quoted $700 for 4 coil springs total, I would say its a good deal. Listen to the workshop and get it changed.

 

[EJB]

There is a shock absorber or damper in the coilover setup too.

Eh have meh... I can't remember is no absorber or no shocks.

 

[keenklee]

A coilover is a type of shock absorber (aka damper).
The shock absorbers and springs (not the springs on the coilovers) are part of a suspension system.

 

[EJB]

this is a complete set of Tein CO.
which part is not the absorber?

I dunno, this set I've seen twice, I only know the springs & the sticks. Can't quite remember is no shock or no absorber.

 

[EJB]

There is a shock absorber or damper in the coilover setup too.

Mine was on full damping + height adjustable, maybe that's why no shocks? I can't remember, but I know something is not there.

 

[Dragon]

Mine was on full damping + height adjustable, maybe that's why no shocks? I can't remember, but I know something is not there.

No shock absorber then how your suspension do damping.

This is how shock absorbers look like:

There are different types of suspension designs, the coilover design is simply a spring over absorber together in one unit.

It looks like this:

For more details on different types of car suspension, can read up here:
http://www.carbibles.com/suspension_bible.html

Hope this helps.

 

[seveneleven]

A coilover is a type of shock absorber (aka damper).
The shock absorbers and springs (not the springs on the coilovers) are part of a suspension system.

So in summary, can i say :

A coil over is a type of suspension that consist of spring and absorber/damper and can be mix and match with other brand.

The conventional suspension is a set by itself and if any parts spoil, got to change the whole suspension?

 

[zensushi]

Why not bring to another workshop to seek a second opinion?

Do not share what the first workshop told you.

Just state the symptoms.

See if the diagnosis tallies?

 

[doody_]

Aren't all suspensions made up of shock absorbers and spring?

 

[ZhuTou!]

So in summary, can i say :

A coil over is a type of suspension that consist of spring and absorber/damper and can be mix and match with other brand.

The conventional suspension is a set by itself and if any parts spoil, got to change the whole suspension?

Conventional type absorber and spring is separated
Which one spoil, change that one can liao

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[seveneleven]

Conventional type absorber and spring is separated
Which one spoil, change that one can liao

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so mean to say Coilover is the whole set (spring n damper) by itself and anyone spoil got to change whole set/ whole coilover ?

 

[ZhuTou!]

so mean to say Coilover is the whole set (spring n damper) by itself and anyone spoil got to change whole set/ whole coilover ?

From what i heard yes

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[li9ht5peed]

so mean to say Coilover is the whole set (spring n damper) by itself and anyone spoil got to change whole set/ whole coilover ?

You can change just the damper or the coil, or both. It depends on the fault at hand.

My own vehicle recently had some front suspension creaking sounds at low speed. After removing the wheels and checking the coilover, sway bar, control arm for looseness, I found the stabilizer link rubber boot was torn. So I replaced the stabilizer link myself in the carpark. Now the dashboard error message is gone. Previously everytime I went over a pot hole, there would be error messages. Now gone. Total damage was $100 only. Alignment was still perfect, so no need for that.

 

[keenklee]

So in summary, can i say :

A coil over is a type of suspension that consist of spring and absorber/damper and can be mix and match with other brand.

The conventional suspension is a set by itself and if any parts spoil, got to change the whole suspension?

A normal shock absorber does not have spring.
Think of a coilover as a high-end shock absorber with spring that enhances performance.

AFAIK, coilovers are sold either can be serviceable or un-serviceable.
While everything can be "dismantled" and repaired, the availability of spare parts and the effort to repair it makes it either serviceable or un-serviceable.

The entire suspension system consists of many parts, which part spoilt change that part. E.g. if the shock absorber is leaking, can change it. if some bushing wear and tear, just change that part.

 

[keenklee]

Aren't all suspensions made up of shock absorbers and spring?

I think the confusion could be because of the spring found in the coilover.