Technical Apex Springs Coil Bound

Paul106xsi · Aug 4, 2015

Hi Guys,

My Sei failed it's MOT on a few bits including a broken rear spring. I ordered up some Apex lowering springs, fitted this and had the car retested. This time the springs (brand new) are an advisory as they are coil bound (when on the ground about 3 of the coils are touching). I've never heard of this before but wondered if anyone else with after market springs has found this? They're the correct rate springs for the car (sporting), as far as I can tell they're fitted the right way up and there's nothing unusual about the weight of the car at the rear so I can't understand why they'd do it.

Any insight would be much appreciated.

henseyseries3 · Aug 4, 2015

Paul106xsi said:
Hi Guys,

My Sei failed it's MOT on a few bits including a broken rear spring. I ordered up some Apex lowering springs, fitted this and had the car retested. This time the springs (brand new) are an advisory as they are coil bound (when on the ground about 3 of the coils are touching). I've never heard of this before but wondered if anyone else with after market springs has found this? They're the correct rate springs for the car (sporting), as far as I can tell they're fitted the right way up and there's nothing unusual about the weight of the car at the rear so I can't understand why they'd do it.

Any insight would be much appreciated.

I've got the same springs fitted to my sx never had a problem with then

DIDCOTT · Aug 4, 2015

I fitted the same springs to my sporting and the drop is hardly noticeable. They seem ok we're yours new ? Are the bump stops there?

portland_bill · Aug 4, 2015

If they're new, talk to the supplier.
Bump stops are there to absorb the shock when it bottoms out. Make no difference to ride height or normal suspension travel.

jatkinson · Aug 4, 2015

The apex are wound close togeher ,, so will be touching there made to be like that

hame41 · Aug 4, 2015

^as James said,thats how that make them safely lower and get the spring rate correct. Nothing to worry about

portland_bill · Aug 4, 2015

jatkinson said:
The apex are wound close togeher ,, so will be touching there made to be like that

If the coils are touching, they are no longer doing the job of a spring.

mrcinquecento · Aug 4, 2015

portland_bill said:
If the coils are touching, they are no longer doing the job of a spring.

But it doesn't stop the rest of the spring doing the job of a spring!

Quite a lot of lowering springs are designed to be that way, they basically are there to do the job of a "helper spring" on coilvers and keep it located when the suspension is uncompressed.

ycming · Aug 5, 2015

They are progressive springs, it is designed like that,

i.e.

Prog_spring_BW_descrip_inserted_%20Image011.jpg

the top part will always be touching. Again what James and MrCento said, it is normal.

Eklipze3k · Aug 5, 2015

Take it somewhere else for your next test.

Paul106xsi · Aug 5, 2015

Thanks all. I noticed they were progressive but didn't realise they would compress as much as that. Yep, have to take it somewhere else next time.

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