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Exhaust paint?
https://www.ausmini.com/forums/viewtopic.php?f=2&t=87284		 Page 1 of 1
Author:  Irish Yobbo [ Mon Sep 22, 2014 10:25 pm ]
Post subject:  Exhaust paint?
My rusty LCB manifold was due for a clean-up, so I gave it a go with a wire brush, and some rust dissolver, then put some exhaust paint on it. My brother had used VHT on his valiant before, but with a month of not much driving, it was beginning to spot through the paint. I figured sinceI had removed all the rust very well and used an entire can on my tiny LCBs, they would be fine. So I used the same stuff.

It's now a few months down the line, and there's a clear amount of rust coming though. I was talking to a friend today, and he's done the same with his motorbike - same issue. I've heard that the VHT stuff is good - is this just what we should expect from exhaust paint, or is there a better brand? Or are we all just awful painters?
Author:  drmini in aust [ Mon Sep 22, 2014 10:28 pm ]
Post subject:  Re: Exhaust paint?
I find the stuff supercrap sell works better than VHT.

I'll find a link...
http://www.supercheapauto.com.au/online ... true#Cross
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Author:  Minimadmarty [ Mon Sep 22, 2014 11:26 pm ]
Post subject:  Re: Exhaust paint?
I'm putting my extractor in for ceramic coating. I'll let you know how it goes :D
Author:  peterb [ Tue Sep 23, 2014 9:34 am ]
Post subject:  Re: Exhaust paint?
Most of these types of paints are porous and allow the moisture to get to steel. Using heaps will usually make it worse because then it flakes off. I worked in a place that had muffler shop as part of the business, they just used elcheapo silver frost paint. It worked perfectly and I've used it ever since. Probably the best you'll do short of something really pricey, then you might as well buy stainless ones.
Author:  drmini in aust [ Tue Sep 23, 2014 10:27 am ]
Post subject:  Re: Exhaust paint?
If you don't need it silver, try pot belly black paint. It is designed to last, on red hot iron or steel.
Author:  Mick [ Tue Sep 23, 2014 11:11 am ]
Post subject:  Re: Exhaust paint?
Challenging surface to coat. Cycling through 0 to 800 degC, then gets doused in water, then sat for a long period, then gets super hot again... repeat ad finitum...
Author:  Flute [ Tue Sep 23, 2014 2:03 pm ]
Post subject:  Re: Exhaust paint?
Ceramic coating looks like this. (or you can get black) Cost $288 delivered (Sept 2014). I got mine done at HPC in Leongatha. Sent them in a post pack for $13-.
My previous set are good as new after 6 years, no sign of any rust. They do the inside as well. They do dull slightly over time. I think they look better than stainless and you get the heat reduction properties as well as longevity. Just my opinion though.

http://www.hpcoatings.com.au/

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Author:  Mr Orange [ Tue Sep 23, 2014 2:38 pm ]
Post subject:  Re: Exhaust paint?
Mine are HPC coated as above, though was only about $150. Holding up well!
Author:  awdmoke [ Tue Sep 23, 2014 4:39 pm ]
Post subject:  Re: Exhaust paint?
Galmet cold galv zinc.
Not shiny, but a cheap & effective touch up coating.
Author:  davem [ Tue Sep 23, 2014 5:29 pm ]
Post subject:  Re: Exhaust paint?
Yep I got mine ceramic coated as well $300 for the weber manifold and extractors, they look great and good at keeping the temps down
Author:  Minimadmarty [ Tue Sep 23, 2014 6:12 pm ]
Post subject:  Re: Exhaust paint?
Flute wrote:
Ceramic coating looks like this. (or you can get black) Cost $288 delivered (Sept 2014). I got mine done at HPC in Leongatha. Sent them in a post pack for $13-.
My previous set are good as new after 6 years, no sign of any rust. They do the inside as well. They do dull slightly over time. I think they look better than stainless and you get the heat reduction properties as well as longevity. Just my opinion though.


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I put mine in today at CIC Ceramics in Perth I hope mine come back looking as good 8)

The guys at CIC were saying not only do you get corrosion protect but also, to quote from their website;

'The coating is a thermal barrier, by keeping heat within the manifold, you’re going to accelerate the exhaust gas velocity which reduces back pressure and reduces fuel contamination due to reversion. This is a performance benefit. Second, you’ll reduce the surface temperature of the manifold. This means if a person comes in contact with it, they are less likely to be burned and leave skin behind. If there is a component close to it, it will not see as much heat as it would with an uncoated manifold. In addition, not as much heat will be radiated under the hood or into the engine compartment. This reduces the underhood temperature which, again, reduces the temperature of surrounding parts, such as, alternators and starters. It also reduces the amount of heat that can be drawn in through the carburetor, which is a secondary performance benefit.'

Well worth the cost for the looks and added performance IMO!
Author:  MiniBrad [ Tue Sep 23, 2014 6:48 pm ]
Post subject:  Re: Exhaust paint?
Last year a mate of mine had built an engine for his Skyline that had over 550BHP & he let me take it for a very 'enthusiastic' drive & when we got back he popped the bonnet & said touch the turbo, which had been ceramic coated & I cautiously moved my hand towards it & was surprised at the temperature of it.
It was warm & not hand meltingly hot.

DISCLAIMER: DON'T TRY THIS AT ALL!!!!

Cheers Brad
Author:  Diesel27 [ Wed Sep 24, 2014 5:14 pm ]
Post subject:  Re: Exhaust paint?
when paint exhaust it is good to put thin coats on first the bake them , this allows the thinner to get out before the next layer,
saw this trick on the telly program named Trucks on 7 mate
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