cheap ceramic exhaust coating?

[350matt]

www.racestuff.co.uk/70001/info.php?p=8&pno=0&pid=425152&cat=&ack=9&search=&sought=

seems too good to be true... I thought this stuff needs baking on at the cost of hundreds of quid..


Matt

[spend]

Apparently is supplied by Cam-u-coat... Demon tweeks sell it as well. When I had mine done (at C-u-C) it was put through the oven, but the chap said it would still cure when fitted?

They look good, but I saw he sprayed the coating on ~ not sure if you need a solvent or big nozzle to do this. I cant see how you can get the internal coating without some sort of spraying ~ maybe something like the tubes used for rustproofers would do it.

Maybe its worth calling the guy at Cam-U-Coat for a chat, he seemed a pretty nice chap, and since they are the UK agents he should be receptive.

Dave

[grahambell]

Just done a manifold with this stuff. You're right that most of these coatings need to be professionally applied, but this one is suitable for DIY and I just applied it with a brush. Haven't actually fitted the manifold yet so can't give full report. However I can tell that that while it does air dry, proper curing does require heat, though running on the car is supposedly good enough.

Edited by grahambell on Thursday 15th February 18:50

[350matt]

So it just coats the outside like paint and its still effective?
Matt

[GreenV8S]

They say the Cermachrome stuff has to be baked on. I can't work out of the Satin Black they sell actually has any real insulating effect or just basically paint like all the other high temp paints you can get.

[spend]

Dont think so Pete they are both the ceramic coatings that C-U-C offer. Black has the higher performance I was told ~ when I had mine done by him. I'm quite keen to give this a go on intake manifold / base / plenum. It looks a lot cheaper than insulator if it works ~ I'm certainly impressed with my manifolds as you know. But I think the key is ensuring you can also do the internal coating which we've been thru in the past.

see www.camcoat.u-net.com./Coatings.htm

Dave

[GreenV8S]

spend said:

I'm quite keen to give this a go on intake manifold / base / plenum. It looks a lot cheaper than insulator if it works

Do you mean internally, keeping the nice cold air away from the nasty hot metal? You'd need to be extremely confident that it all stayed attached. That's what bothers me about internally coated exhausts too - it must be very hard to prepare the surface to the same standard as the outside and if it does come off who's to know? But the crud will end up sitting on the cat.

[spend]

GreenV8S said:

But the crud will end up sitting on the cat.

Could'nt happen to a more deserving animal

What cat?

Seriously tho ~ that was my point. If you can only do external what is the heat doing to the metal? will it be conducted back to the head...

Having said that I think you can get at the 'hotspots' to coat internally, but still interested in how the pro does it.

Dave

[grahambell]

350matt said:

So it just coats the outside like paint and its still effective?
Matt

The black coating I got from racestuff just goes on the outside and is described on the tin as a 'thermal barrier'. Can't personally say how effective it is.

[GreenV8S]

grahambell said:

Can't personally say how effective it is.

Do you have any way to measure the exhaust surface temperature? For example if you don't have access to measuring equipment you can see how long it takes from a cold start for the exhaust to melt a tie-wrap, that sort of thing.

[grahambell]

Know someone who might have an optical temp gadget. Was considering measuring temp of existing standard downpipes and comparing to new coated 4-branch when I've fitted it.

[spend]

I'd be interested in that, you are welcome to borrow my IR lazer temp thingy. PM me if you want.

Dave

[GreenV8S]

spend said:

I'd be interested in that, you are welcome to borrow my IR lazer temp thingy. PM me if you want.

Dave

"Me too", I'm based in MK if you want to borrow an IR thermometer.