Ceramic Vs. Stainless header
well.... im sorry to burst peoples bubble.. but Jethot coating does not reduce the temperatures like everyone thinks
Insulation works on 2 factors.. Thermal conductivity and Thickness!
While the jethot coating may have low thermal conductivity, it really lacks sufficient thickness to be effective.
Dont get me wrong, i have jethot coating on my stainless headers.. but thats just to keep em shiny for a longer time without bluing.
On that same note.. if you are truely looking for a ceramic header coating that IS thick enough. look at http://www.swaintech.com/store.asp?pid=10969
Insulation works on 2 factors.. Thermal conductivity and Thickness!
While the jethot coating may have low thermal conductivity, it really lacks sufficient thickness to be effective.
Dont get me wrong, i have jethot coating on my stainless headers.. but thats just to keep em shiny for a longer time without bluing.
On that same note.. if you are truely looking for a ceramic header coating that IS thick enough. look at http://www.swaintech.com/store.asp?pid=10969
I'm pretty sure the idea of ceramic coated headers is to insulate the flow of hot exhaust gas from the engine through the rest of the exhaust system. The hotter the gas, the less dense it is, which means faster flow. It also keeps some excess heat out of your engine bay keeping your engine and under the hood temp down.
Ceramic, theres no benefit to having non coated pipes, the only excuse not to is to be cheap, in which case your obviously not interested in performance if your trying to cut corners like that.
I plan on gettin either the intense or zzp header coated
I plan on gettin either the intense or zzp header coated
DO NOT HEAT WRAP YOUR HEADERS....unless you plan to take them off and service them regularly. Wrap will cause your headers to rust 2x as fast.
http://www.clearimageautomotive.com/...s/P4020011.JPG
http://www.clearimageautomotive.com/...s/P4020011.JPG
I'm pretty sure the idea of ceramic coated headers is to insulate the flow of hot exhaust gas from the engine through the rest of the exhaust system. The hotter the gas, the less dense it is, which means faster flow. It also keeps some excess heat out of your engine bay keeping your engine and under the hood temp down.
If you put a good coat of high temp paint on your header before you rap it you will not have any rust problem. I have taken the rap off after 3 year of use and the header and paint I put on still looked great. The header rap works better than almost any coating. I don't ever get the coating because it is a waste of money when you really don't car much about bling in the engine bay. I am performance over looks any day of the week when it comes to the engine. As far whether to protect or not to protect it depends what climate you live it. I have seen unprotected headers last a long time without rust in Texas. The only thing is that all the factory paint burns off and it looks like ****. The header was fine though.
If you put a good coat of high temp paint on your header before you rap it you will not have any rust problem. I have taken the rap off after 3 year of use and the header and paint I put on still looked great. The header rap works better than almost any coating. I don't ever get the coating because it is a waste of money when you really don't car much about bling in the engine bay. I am performance over looks any day of the week when it comes to the engine. As far whether to protect or not to protect it depends what climate you live it. I have seen unprotected headers last a long time without rust in Texas. The only thing is that all the factory paint burns off and it looks like ****. The header was fine though.
thats right in engineering classes specific in fluid and thermodynamics ,the ceramic coated is the keep the gas hot inside the header to maintain a constant air flow and good air emisions ( no viscocity or less)reduces friction in the exhaust line. just in case is a perfect condition to the engine and the exhast.
Well.. i guess you havnt got to heat transfer classes yet..
yes there are benefits to hotter EGT, but that is assuming you have significantly lower thermal resistance and have hotter EGT..
I have always just used steel wool or sand paper to rough the surface up and it has alway worked. I let it set for at least 24 hours after painting before I wrap it. If you have access to a sand blaster that would work even better. Do several coats of GOOD high temp paint.
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