Bugeye58 said:
MadMarx said:
Ever thought about that the coated tubes will get too hot and die earlier? Several friends with coated or isolated headers had holes after 2 or 3 years of use. At the bended parts the steel fails from the overheating.
My header is made from AISI 304L inox steel. It doesn't rust. It turns a little blue after a while.
I never would coat a header that is in a sports or race car.
I guess those of us that have been using them for 15 years or so without problems should count ourselves among the fortunate then.
Jeff
Unfortunately, I had a similar experience Jeff with at least 4 sets of headers.
After about 50k miles in 4 years (I actually drive my LBC), including a lot of hard driving up and through the Rocky Mountains, my headers that were both flow coated and ceramic coated, blew through. I took them back to the coater and got a full reimbursement on the coating costs.
Note that the coating warranty usually exclude racing applications.
Sure, if I don't drive my car except on and off a trailer, and maybe a few hundred miles a year to stay under your insurance quota, coated headers will last many years and maintain a bright luster.
So I guess the question is, in your experience, how many miles do you drive in those 15 years, and what is your definition of "using them"??