couple exhaust questions

[machone Amateur Metal Finisher Find all posts View Profile Close machone]

First, what would you charge to ceramic coat a set of headers, and what would you charge to powder? Looking for the cost difference here.
Second, What should I charge to powder the rest of the exhaust?
these would both be not including prep.
Lastly, how well do the IR lights work, and do they work for ceramic?
Thanks in advance for your help, all!
mach

[pickleboy Metal Finishing Guru Find all posts View Profile Close pickleboy]

Re: couple exhaust questions

for old school small block headers i would charge between 100-150 for the set. for new shorty style between 75-125 for the set. depends on the prep time needed. as for ir lamps i cant say as i have not used them. i also have not done any high temp powder. for the powder i would bid it just like it was standard powder and add 20% to the material cost. ceramic does not have to be cured in an oven. it can be air dried and then when attached to the engine it will fully cure.

[machone Amateur Metal Finisher Find all posts View Profile Close machone]

Re: couple exhaust questions

Thanks pickleguy, I appreciate the response. Boy, things are really starting to take off! I guess all this lack of snow made all the hot rodders restless, they're coming out of the woodwork! I'm not gonna have time to work on the '72 if this keeps up, good thing the '03 is ready to go!
mach

[jtagger19 Experienced Metal Finisher Find all posts View Profile Close jtagger19]

Re: couple exhaust questions

high temp powder will bubble up and peel off if heated over 1000
and most headers go over 1000 easily
I would go with ceramic
like pickleboy said ceramic can air cure unless you are ussing chromex or cermakrome
and IR lamps will not work for ceramic coatings
ceramic coatings need to be cure at 500 deg ( part temp)
for 1 hour
and my IR lamp have never even worked for powder wich is cured at 400
you need to make some sort of enclosure for it to reach 400
my lamp is a 1500 watt a bigger one might work better for powder but I really don't think it can get things up to 500

[hulk30 Amateur Metal Finisher Find all posts View Profile Close hulk30]

Re: couple exhaust questions

what is the best way to apply ceramic coating inside and out of headers
i can go to 500 f whit my oven
can i put black satin inside et chromex outside
thank

[hvac36 Amateur Metal Finisher Find all posts View Profile Close hvac36]

Re: couple exhaust questions

high temp powder will bubble up and peel off if heated over 1000
and most headers go over 1000 easily

This statement is not true, I powder coat headers all the time and never have any issues. I have them on stock engines and street rod engines, Never had them bubble or peel. Only engine that will get over 1000 degrees are Drags and Desiel engines, or unless your running real Lean on the mixtures and if your running that lean well you will damag ethe engine before the powder coat..

Jim S...

[gestalt New User Find all posts View Profile Close gestalt]

Re: couple exhaust questions

This statement is not true, I powder coat headers all the time and never have any issues. I have them on stock engines and street rod engines, Never had them bubble or peel. Only engine that will get over 1000 degrees are Drags and Desiel engines, or unless your running real Lean on the mixtures and if your running that lean well you will damag ethe engine before the powder coat..

Jim S...

Turbo Charged Engines see 1200-1600 degrees regularly. I have an EGT gauge and I can sweat to it.

[machone Amateur Metal Finisher Find all posts View Profile Close machone]

Re: couple exhaust questions

ok ok, not gonna get in an argument, but I'm a toolmaker with experience in heat treating, and to harden steel you have to reach 1450 degrees before quenching. If you've ever seen steel at 1450 degrees, it's a BRIGHT cherry red, & in all my years of hot rodding, I've NEVER seen headers red unless there was something TERRIBLY wrong with the engine. When I fire my Mach up this spring, I'll take a reading with my IR thermometer & post results.
Thanks for the info guys!
mach

[mtnbiker Amateur Metal Finisher Find all posts View Profile Close mtnbiker]

Re: couple exhaust questions

I have heard of a few issues with doign exhaust manifolds with high temp powder. Truck, snowmobile and motorcycle. I wont do them.

[boink New User Find all posts View Profile Close boink]

Re: couple exhaust questions

ok ok, not gonna get in an argument, but I'm a toolmaker with experience in heat treating, and to harden steel you have to reach 1450 degrees before quenching. If you've ever seen steel at 1450 degrees, it's a BRIGHT cherry red, & in all my years of hot rodding, I've NEVER seen headers red unless there was something TERRIBLY wrong with the engine. When I fire my Mach up this spring, I'll take a reading with my IR thermometer & post results.
Thanks for the info guys!
mach

I have seen manifolds and headers glow on more than one occasion. Just by having the ignition timing off will cause this. And this is more common to happen right after the engine has been put together and usually with manifiolds that have been freshly powdercoated.

There is no way I would put powder on the exhaust unless it was for a stock vehicle with cast iron manifolds.

[machone Amateur Metal Finisher Find all posts View Profile Close machone]

Re: couple exhaust questions

did the headers in ceramic, rest of exhaust in high temp powder. Turned out good.
BTW, cured the rest of exhaust with new 2000 watt IR light. Took a little longer, having to move the light down the pipe, but got to 400 easily.
mach

[hulk30 Amateur Metal Finisher Find all posts View Profile Close hulk30]

Re: couple exhaust questions

this is the test i want a do
powder coat whit hi temp coating on the headers cook it let it cool then
apply ceramic coating inside(good to 2000 f) make sure the product cover the entier headers inside
according to the instruction label the product should drop the surface temp drasticly and that will help the hi temp coating stay in place and not flaking

somebody try that before
by the way what is the spec for max temp of the high temp powder

[lcaswell ******* Inc President Find all posts View Profile Close lcaswell]

Re: couple exhaust questions

The Silicone powders we sell will withstand 1200F

[hulk30 Amateur Metal Finisher Find all posts View Profile Close hulk30]

Re: couple exhaust questions

thank for the info

[upncoming Amateur Metal Finisher Find all posts View Profile Close upncoming]

Re: couple exhaust questions

this is the test i want a do
powder coat whit hi temp coating on the headers cook it let it cool then
apply ceramic coating inside(good to 2000 f) make sure the product cover the entier headers inside
according to the instruction label the product should drop the surface temp drasticly and that will help the hi temp coating stay in place and not flaking

somebody try that before
by the way what is the spec for max temp of the high temp powder

i think thats a sweat way to do it tho