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New Fuel Tank: paint or powder Coat?

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I'm planning to replace my fuel tank with a new-old stock genuine VW tank that I've bought.

The new tank has a satin-matte black finish to it, but the finish is a little thin and has some minor storage transit marks on it.

Because of that, I would like to have the tank 'repainted' to be exactly the same, but perhaps with a slightly thicker coat for durability.

Question is does anyone know whether the original finish is powder coat or paint and also whether a fuel tank should be painted rather than powder coated?

As part of the powder coating process, the finish is baked onto the surface at a high temperatures, which could cause any welds / brazing on the tank to melt away (although it depends on how the VW tank has been welded together). Obviously, I don't want to fit a nice new tank that leaks!

Not keen on the idea of powder coating, but my local specialist (who does either paint or powder coat) reckoned it was powder coated (if that's what was used originally, then I'd be fine with that).

Just wondering if anyone has had problems with a powder coated tank?
 

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I believe they were painted from the factory but I could be wrong??

Most Mk1 Golf tanks don't rust from the outside, they rust inside if the cars been sat around for long periods of time or the filler neck has rusted away and water gets into the tank.


1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 317,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.

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dont powdercoat if its gti tank. you'll melt the swirl pot

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I wouldn't powder coat it either.  A good primer over the oem, possibly an epoxy or two part urethane be sure you tape off the hose ports and sender, then spray the bottom of it with undercoat that hardens.  I would also spray both edges of the seal that is the upper and the lower.  It will do more to prevent rust than anything else that you do and you won't damage anything.  If you purchase the hardening type similar to body-shotz, then you can paint it to match your chassis (body).  This is what I did years ago to an MG that I had.



What do Divorces, Great Coffee, and Car Electrics all have in common?

They all start with GOOD Grounds.

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Thanks everyone. This kind of confirms my suspicions that it should be painted rather than powdercoated (tank is for a non-fuel injected car).

I'll be asking a local powder coaters and paint spraying specialist to do the work. They've advised me to source the paint (so that I can get it matched to the right OEM level of satin and durability), which I'm looking to do from HMG Paints.

It's a shame to have to have to paint a brand new  tank again. I'd prefer this to be done by painting over the original paint (so as to avoid having to have it stripped that might run the risk of the inside becoming contaminated by any blasting media). I suspect though that, from professional angle, they will want to strip the tank before painting, but I can take advice on this from them / the paint supplier.
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