Some work on my 02 discovery,
To my understanding our land rovers engines heat issues.
so here's the theory in a nutshell, Ceramic coating is a thermal barrier coating applied to exhaust and turbo systems to insulate and lower radiant heat...
that being said I figured what the hell since I already have the motor taken apart for some bad head gaskets (from overheating) ill ceramic coat the exhaust manifolds plus they looked like hell anyway.

It was a pretty easy job, First I media blasted the manifolds to remove all rust, grease, and other contaminants, after that i used compressed air to remove any media dust left behind and washed them down in MEK.

To make sure there was no contaminants left in the pores of the metal surface i heated them to 500 degrees in my powder coat oven for around a hour. this boils out anything left behind.

Wash down with MEK again and applied two coats of the ceramics and baked at 700.

I am very happy with the results and with 2000 hour salt spray rating I know it will last a long time. I wish I had a before reading of manifold temp but ill post up what the temp is with the coating once the beast is running again.

Before:

 

and after

 

Those look pretty good.

 

Those look cool. How much would you do a set for if I sent you a pair?
On Top Gear the Discovery engine shown had aluminum heat shields installed over the manifolds.
I have found them both on my dads Honda and my moms Acura. We need to find out what cars they were stock on. They might fit directly on our manifolds.

 

Thanks Spike!

hey boss i sent you a PM on your question.
But yea I would think heat shields shoud help alot as well, There seems to be alot of meat on the manifolds where you can drill and tap a blind hole to mount some simple fabricated up heat shields, Anyone know what material most heat shields are made of?

 

I like this idea! This is way better than the posts about "thermal wrapping"

 

Most of the heat shields I see laying on the side of the road after they fell off of a car are made of just plain old sheet metal.
The trick is the air gap between the shield and the heat source, the air acts like insulation.

 

Got my manifold back today from Powertrip motor sports. They look sweet.
I all ready had my Y pipe dropped from doing the CDL installation, so the timing was perfect. It takes a 12pt 12mm socket to remove the bolts, took me about 35 minutes per side. I hope to have them on later tonight. I chased all the studs with my tap and used anti sieze on all the bolts and studs.

 

Just wondering, did you have the inside coated as well?

Funny thing....I am a member of an RX7 forum. The folks that have upgraded to larger T04 to GT35's, some have used stainless steel cooking pots around the exhaust housing. If there was just a picture, I would not have never known....looks damn good!....cooking power!

 

Looks like it was coated. But I cannot tell. I think this ceramic sprays on like powder coat with 3/4 applications so I dont think doing the inside would be possible without a liquid ceramic. Y pipe goes back on in the morning. I'm curioius to see if the under hood temps will be affected at all. Will probably have to wait till summer to tell. Now I need a IR digital thermometer.