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Old 12-05-2019, 11:58 AM   #1
DC240S
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Subframe refurb/paint opinion/advice?

Hi all,

I currently have the front subframe off the car for refurbishment.
Corrosion is light - but I'm trying to decide between a couple of options to treat and repaint;


1.
Blast the entire subframe, prime with BH Electrox then topcoat.

2.
Remove the corrosion by grinding/sanding those areas only, treating with BH Deox Gel, coating only the treated corrosion with BH Electrox, keying the whole subframe and then top coating.

Heres some pics of what I'm dealing with.

Seems excessive to blast the whole thing - its wether the original finish will be OK keyed and topcoat? - its been there 13 years already though so surely would be a good base.












Last edited by DC240S; 13-05-2019 at 09:56 AM.
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Old 12-05-2019, 02:33 PM   #2
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Id honestly be tempted to have the whole thing blasted.....it won't be that expensive and if bits around the edge are failing, it might just be worth doing it anyway.

If nothing else, it give a level base to work on.

On a separate note, do these benefit from being seam welded? The 306/Xsara ones seem to, with a lot of people reporting extra rigidity from doing so. Welded sections 2-3 cm long all around the edge.
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Old 12-05-2019, 03:17 PM   #3
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That looks a very difficult piece to blast, whatever the medium. If I was in it as far as you I'd go for chemical strip, dipping and coating.

Know idea where it is done, just seen it on the telly.

Edit to add, it actually already looks galvanised.

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Old 13-05-2019, 10:09 AM   #4
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I applied BH Deox Gel to the surfaces around the bushes and its done a decent job removing corrosion/cleaning the metal.

I've ground, sanded and wire wheeled the complete subframe and applied Deox Gel.
Potentially with final sanding and keying Electrox followed by a top coat could be an option.





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Old 13-05-2019, 01:16 PM   #5
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Been quoted £110 to blast and powder coat!!
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Old 13-05-2019, 03:03 PM   #6
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Quote:
Originally Posted by DC240S View Post
Been quoted £110 to blast and powder coat!!
Sounds a good price, around here in W Yorks, you'd pay that for a set of wheels, looks to be more work in that subframe.
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Old 13-05-2019, 03:39 PM   #7
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Thought it would be half that! Oh well
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Old 13-05-2019, 10:40 PM   #8
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Quote:
Originally Posted by DC240S View Post
Thought it would be half that! Oh well
As did I!! £100 sounds expensive.....I can't understand why it's so much. Granted, it's not the smallest thing to do but it still sounds expensive....
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Old 14-05-2019, 04:47 AM   #9
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My twopenneth.

How much time and how many £££'s have you you spent getting it as far as it is now?

How much more time and £££'s do you think it might take to have it ready for refitting?

Compare the £££'s to the cost of blasting and power coating and realistically think about what else you might be doing with the time - assuming you have lots of "other stuff" to be getting on with. .

Yes, it's great to DIY because you know what's been done, what products have been used etc. but how much "better" might that be than (or maybe even worse????) than having it done "professionally" and perhaps just finishing off with some Dynax after fitting?

Hope that helps.

Andy.

PS Can across this site for chemical strippers - Used some and it's really good stuff.

https://www.stripperspaintremovers.com/

Last edited by AndyN01; 14-05-2019 at 04:50 AM.
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Old 14-05-2019, 07:12 AM   #10
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at the start, i would say powder coat it as its a more robust coating......but you are quite a way in and if you have the time, just soldier on.
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