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Painting new coil springs.


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#1 Indy Orange

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Posted 22 July 2023 - 12:37 AM

Hi all, I have some new yellow Kings coil springs I would like to paint satin black ,would a light sand or sandblasting be ok before spraying black ,thanks Paul.



#2 RallyRed

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Posted 22 July 2023 - 05:55 AM

Have done this with the Blue Lovells coils. 

A light sand, then a rattle can.

I found that they seem to get a fair few stone chips ( or whatever) and the blue showed through.  I did a quick and easy job of it, maybe a bit more care and a better result?    I wondered if the paint they 'dip"?? them in ?? is some kind of flexy paint?



#3 Indy Orange

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Posted 22 July 2023 - 11:09 AM

Thanks Col,yeah the paint seems quite tuff maybe baked on ,definitely don’t want the yellow showing through later on down the track .I thought maybe Por 15 ,but not sure if they have a Satin colour in that.



#4 Indy Orange

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Posted 22 July 2023 - 11:21 AM

Anyone else done this ?Im also not sure how sandblasting would go with new tempered springs.


Edited by Indy Orange, 22 July 2023 - 11:24 AM.


#5 IanC

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Posted 22 July 2023 - 11:41 AM

I had mine blasted and painted with KBS satin. Haven't driven the car yet. So can't say how it will last. KBS is pretty good paint. But it's hard to stop stone chips.

#6 rexy

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Posted 22 July 2023 - 02:43 PM

Strip them back to metal and paint them black if you are worried about chip colour.



#7 yel327

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Posted 22 July 2023 - 03:10 PM

Might be a silly question, but why black? The aftermarket ones have a very different spring length and gauge don't they? So even if black they still look wrong?



#8 Bruiser

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Posted 22 July 2023 - 04:28 PM

Are you building the car to be ultra pristine, or drive it in the wet and on a dirt road now and again?
Mine end up filthy in no time
How long does the yellow or orange paint the aftermarket ones come painted with last?
I’m with rexy, strip them back with a wire wheel or paint stripper or something and give ‘em a good couple of coats
You’d have to sandblast them to death to hurt them with heat, I reckon

#9 sibhs

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Posted 22 July 2023 - 05:50 PM

I presume they're powder coated yellow?

 

I know my blue lovells on the 4wd were powdered coated as it all peeled off after a few years.

 

Marty



#10 Indy Orange

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Posted 22 July 2023 - 06:00 PM

Thanks for the advise fellas.The original GTR springs are now 50 odd years old now ,so we’ll past use by date ,I wanted to paint the Springs satin black ,so kind of in keeping of how they originally were,even though different spring length,I think yellow will stick out like dogs balls given everything else under the car is black all bar the tail shaft.Not sure if there powder coated Marty but the Kings Spring finish.



#11 RallyRed

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Posted 22 July 2023 - 06:23 PM

The factory finish of the Kings is quite thick, if you ever measure the coil wire dia. for calc. spring rates, there is quiet a difference in painted OD to raw OD.
Also see pics., not in correct order.

Attached Files


Edited by RallyRed, 22 July 2023 - 06:23 PM.


#12 RallyRed

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Posted 22 July 2023 - 06:36 PM

p.s From memory, the yellow stuff is on there hardcore...I think you may go insane sanding it off, best to blast it away.
I filed it off to measure coil.

Attached Files



#13 claysummers

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Posted 22 July 2023 - 06:48 PM

Funny, you don't "spray" powder coat last I heard.

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#14 LXCHEV

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Posted 22 July 2023 - 08:52 PM

If you're after a long lasting solution, I'd personally take them to a professional powder coating mob. They will either sandblast in house to remove the current coating - or send to someone else to sandblast first, and then powder coat in your desired finish. Should last decades if done properly. You could probably also chemical dip to remove the current coating. Any kind of rattle can paint will look fantastic for the first little while, and then just deteriorate rapidly. If painting yourself - I'd definitely go the KBS or POR15, fantastic but bloody expensive.

 

And yep - I would have thought that all new King Springs (and likely most other manufacturer's too) - would all be powder coated from the shop. I thought powder coating was sprayed. Clay - is there another method? Check this out....

 

https://www.youtube....?v=t4n0LW1Eoj8 



#15 claysummers

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Posted 23 July 2023 - 08:57 AM

Local company described that they electrically charged the subject, in this case rims, so the powder sticks to them, then bake.


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#16 S pack

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Posted 23 July 2023 - 09:09 PM

Funny, you don't "spray" powder coat last I heard.

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Spraying the powder is the only way I have ever heard of applying it. The dry powder spray gun and the work piece are electrically charged so the powder discharged from the gun is attracted to the work piece.

I had my rear springs, trailing arms and diff housing powder coated approx 35 years ago. No sign of the coating cracking, peeling or flaking.
 


Edited by S pack, 23 July 2023 - 09:10 PM.


#17 claysummers

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Posted 23 July 2023 - 11:20 PM

Thanks for the explanation fellas.


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#18 ReplicarSLR

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Posted 24 July 2023 - 01:35 AM

Just an idea, if they are still new and have never been used, maybe ask kings if you could swap them for some unpainted ones.

#19 Heath

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Posted 24 July 2023 - 09:57 AM

Media blasting the coating off springs is a pretty thankless job.

 

How about this... If you are all that concerned about yellow spots, you can still save your money and wire wheel only the leading face of the spring (as it's fitted in the car) so that as it gets stone chipped, it's just bare metal underneath. You won't need to bare metal the inside of the spring or anything to do this.

 

And the more you lower your car (I would recommend this enthusiastically) the less of the spring remains exposed to stone chips!

 

Powdercoating is still sprayed out of a gun, but it's done as a dry process, just depositing fine plastic dust essentially on the surface of the part... it only forms a smooth coating once it's baked in the oven in a subsequent process.



#20 Indy Orange

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Posted 24 July 2023 - 12:10 PM

Thanks fellas ,I tried sanding a section of the spring with emery paper strip ,should work ok to give the primer a good key,then I’ll hit them with primer and top coat with spray gun.






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