2003 Kia Sorento - What Rear Coil Springs?

[zakmuh]

Hi,

I've got a Sorento which came with a lot stiffer rear coil springs. It's got a tow bar so I believe the previous owner changed it. The ride at the back is so hammering and uncomfortable. It's got normal shocks (not SLS) which are not faulty, and now I need to source the correct coils to replace to do a DIY job.

How do I go about finding out the right one (any specs for it)?

Thanks in advance

[zakmuh]

Thanks V8S,

I have replaced coils before on shogun, so I've got this compression tools and jacks. I'll try one and see if I could do it before doing both.

Would this information be helpful? My measurement is 710mm : http://www.pedders.co.uk/kia-sorento-20022007mid-r...

Edited by zakmuh on Thursday 11th May 13:07

[zakmuh]

It's bit more complicated that just walking into the dealer I guess. They say it came with SLS shocks but mine has normal ones. So if self-levelling shocks contribute anything to spring stiffness, then I need to get the right spec one to avoid too much/less bouncing or any hammering effect at the back.

Cheers

[zakmuh]

I just spoke to Kia and they gave me this part number for saying its for non SLS system coil 551013E120. They couldn't very if its standard or heavy duty coils.

I read on caravan forums that for towing, heavy duty ones are recommended. I think I should go for a pair of standard ones from Eurocarparts....

[zakmuh]

Mignon, thanks for your detailed instruction. I'll get these measurements and deflections marked and take it from there. Thanks to all

Cheers

[zakmuh]

Hi,

I've managed to measure the deflection against weight (kg). I couldn't find few people or any other weights. So I got one guy in the boot -63kg. Pics below shows the weights with and without 63kg..

Spring dimensions (without taking it out) : outer diameter 120mm, outer length 200mm, wire thickness 15mm

|https://thumbsnap.com/yDkc1XKR[/url]

1st- rear o/s




2nd- rear o/s



3rd- rear n/s



4th- rear n/s

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From what I've observed, o/s only deflects 5mm (i think the stopper is touching the bottom), n/s deflects 10mm and a 10mm gap is there for the stopper.

Whats your take on these coils please?

Cheers

[zakmuh]

Thanks your reply and pics guys. I honestly couldn't gather any more people or weight. Its such a lovely sunny day and no one seemed to be around for help!

Yeah, from what you all are saying, the car should be raised more. I guess the coils are worn to its max? I'm gonna check the new spring length with my one tomorrow


[url]


|https://thumbsnap.com/ll7gf0DW[/url]

[zakmuh]

SOLVED



Hi Guys,


I've managed to sort out the hammering suspension issue. See pics below.


Checking the recommended aftermarket coils from www.7zap.com (OEM part number and diagram website for Kia), I ordered Kilen coil springs KIL54930 (for non SLS suspension), £40 each including VAT and now the car runs well smoothly!

I took both wheels off, undid both shocks and this dropped the axle down significantly. Then using a timber plank I pushed the axle further (50mm) and pull the coil out. Same way the new ones went in - it was just an easy job. It took less than 1 hour to take both the old ones out and put the new one on my driveway.

I hugely appreciate all your help and advice on going about solving this suspension problem I had.

However, it also has raised the rear side of the car giving a 130mm clearance on n/s and a reduced 120mm o/s between the wheel arch and top of the 265.70R16 tyre. I suspect this would be stabiliser link issue?



New ones....











Cheers

Edited by zakmuh on Wednesday 17th May 13:42

[zakmuh]

I tried it on flat driveway as well and its the same. I'll try on a couple of more place for assurance