Header Coating: Outside or In/Out?
Thread Starter
Safety Car
Joined: Dec 2001
Posts: 4,295
Likes: 2
From: Indianapolis Indiana
Cruise-In III Veteran
Cruise-In IV Veteran
Header Coating: Outside or In/Out?
So is it worth the extra $100 or so to have your headers coated on the inside as well?
Explain why you say yes/no...
Explain why you say yes/no...
Team Owner
Joined: Feb 2001
Posts: 27,217
Likes: 108
From: Short Hills, NJ
Originally Posted by BQuicksilver
So is it worth the extra $100 or so to have your headers coated on the inside as well?
I'd coat inside and out or just get (304) stainless headers.
Race Director
Joined: Jan 2001
Posts: 11,183
Likes: 85
From: Castle Rock CO
St. Jude Donor '15
If you are using a ceramic coating, coating the outside is really only for appearances. The inside coating is the one you need to get any gains. It keeps the heat in the exhaust gases and makes it much harder to transfer that heat into the steel. Coating the outside would still allow the exhaust gas heat to be transfered into the steel(thermal coefficient of ceramic versus steel, ceramic will not conduct heat as fast).
Todd
Todd
Pro
Joined: May 2004
Posts: 744
Likes: 0
From: St. Peters MO.
The inside of your headers are just as likely to corrode or rust. The pipes get hot and cool and with condensation you will have problems from the interior out. If you don't plan to keep the car for a long period it won't be an issue.
Team Owner
Joined: Aug 2003
Posts: 38,314
Likes: 35
Originally Posted by BQuicksilver
So is it worth the extra $100 or so to have your headers coated on the inside as well?
Explain why you say yes/no...
Explain why you say yes/no...
If you can have it done for $100.00 thats a great price.
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Burning Brakes
Joined: Oct 2001
Posts: 916
Likes: 196
From: TX
Bquicksilver
My studies in this area suggest that you would like to retain as much heat as is possible inside the exhaust system (also makes the cats work better and quicker).
From fooling around with motorcycles I understand that inside coated is waaaay better than just outside coating. This also allows your chrome pipes to be chrome on the outside and get the advantages of retaining the heat on the inside.
I am curious as to what made you choose the SuperMax headers over the others you have been so carefully examining.
g
My studies in this area suggest that you would like to retain as much heat as is possible inside the exhaust system (also makes the cats work better and quicker).
From fooling around with motorcycles I understand that inside coated is waaaay better than just outside coating. This also allows your chrome pipes to be chrome on the outside and get the advantages of retaining the heat on the inside.
I am curious as to what made you choose the SuperMax headers over the others you have been so carefully examining.
g