Manifold question

[chickmagnet]

I have a 2g exhaust manifold and when I am done porting it I thought it might be good to get it ceramic coated. I thought I would see if everyone thought that was a good idea or a waste of money and what the gains might be over not doing it. Thanks in advance for all input and I am looking forward to learning.

 

[brute]

What are you doing it for? Looks? Heat issues? You could save a lot of money just painting it with high-temp paint.

 

[1g_tsi_awd]

High temp paint works, or heat wrap also...

 

[oldman]

I have a 2g exhaust manifold and when I am done porting it I thought it might be good to get it ceramic coated. I thought I would see if everyone thought that was a good idea or a waste of money and what the gains might be over not doing it. Thanks in advance for all input and I am looking forward to learning.

What's wrong with your stock heatshield?

 

[chickmagnet]

Nothing wrong with the heat shield except that the ricer who had the car before me painted it red. I was just unsure if it would have any performance benifit like lower temps longevity for any of my other parts. Things like that but it sounds like there is no need to do anything but high temp paint it.

 

[Anonymity]

if your trying to lower temp go with wrap, the ceramic coating is gonna do prettymuch the same thing but cost a bit more

 

[oldman]

Nothing wrong with the heat shield except that the ricer who had the car before me painted it red. I was just unsure if it would have any performance benifit like lower temps longevity for any of my other parts. Things like that but it sounds like there is no need to do anything but high temp paint it.

As long as you have the heatshield on it (top and bottom), you really don't need to do anything to the manifold, at least not for the cost of ceramic coating. Pick up some silver hi-temp and repaint the heatshield.

 

[fourreGsixty3]

It will keep the heat inside the manifold more, but also make it stronger, even though it is a cast manifold and quiet thick. People with tubular exhaust manifolds ceramic coat them if they are driven on the street a decent amount, that with good bracing and they dont crack or are less likely to crack. But the heat shields, and high temp paint will work fine, and a lot cheaper.

Dustin

 

[oldman]

It will keep the heat inside the manifold more, but also make it stronger, even though it is a cast manifold and quiet thick. People with tubular exhaust manifolds ceramic coat them if they are driven on the street a decent amount, that with good bracing and they dont crack or are less likely to crack.

Dustin

Ceramic coating is overrated, my ceramic coating on my EVOIII manifold underneath my heatshield is peeling off just after less than 3k miles. If I have a tubular manifold where heatshield is no longer applicable, I would wrap it instead.

 

[S_Ranger]

I read that wrapping it would cause moisture within the layer and the manifold. Which would end up causing cracks. Explain why it would or wouldn't because I have a lot of thermo wrap in my trunk that could be put to better use.

 

[oldman]

I read that wrapping it would cause moisture within the layer and the manifold. Which would end up causing cracks. Explain why it would or wouldn't .

Can't say because I don't know, someone else would have to chip in.

because I have a lot of thermo wrap in my trunk that could be put to better use

Would you like my ship to address?

 

[donmagicjuan]

The only time I would worry about moisture would be if it got wet and the car was not run for a while. The heat from the exhaust should do a pretty decent job of preventing any accumulation of moisture.
If you want the safest route, paint it with high-temp silver first and then heat wrap it.

 

[fourreGsixty3]

Bruce, I just said what he would get from the ceramic coating, and at the end of my post I stated that he could get the same results from the 2 heat shields, and high temp paint but for much cheaper.

The moisture would evaporate off the manifold and it would not cause cracking what causes cracking on tubulars is being driven on streets, they are rough and bumpy compared to a drag track, this will cause cracking if not properly braced on each runner. Also the onl;y real plausable way from a tubular EM to crack from water would be if you were driving it hard, or for a decent amount of time then poured water directly on it, the suddent change from hot to cold would cause cracking, but the only time that moisture would form on the manifold is over night of what not, and the EM would slowly heat up, and since its not a sudden change from hot to cold it wont crack.

Dustin

 

[S_Ranger]

Would you like my ship to address?

I'd give you a foot. 6" in width. You can wrap up a good pipe with that.

I also read up on jet hott2000. Put that in the search and you'll see he or it's better than ceramic coating. Results show that it lowered the hood temps 30 degrees.

 

[chickmagnet]

Wow that is a ton of good info thank you to everyone who contributed.