TTI Headers and cam break in

adk-roadrunner · Mar 18, 2021

MoparLeo said:
Spend the money and get it dyno'd before you install it.
That will solve all potential pitfalls that may happen. Like oil leaks, coolant leaks, vacuum leaks, fuel leaks.
You will also have the initial tune dialed in and know your torque and H.P. numbers.

I don't know of any dyno tuning engine place anywhere near me where I am. I'm in the Adirondack mountains upstate NY I'm very far north about 35 minutes from Lake Placid. I'm guessing the closest place is probably hours away. I am actually running The self tuning Edelbrock E street EFI on my car so not even sure I would get my money's worth as the carb they ran it on would not be on it after I install it. I've run the system on my 318 for like 3 years now and it runs amazing we'll just have to see how it works on the 440. I will look into it though.

dvw · Mar 18, 2021

The coating burns do to heat. Heat comes from a poor tune. If you think 3000-3500 at light throttle will kill the coating you better never drive on the freeway. If your tune is not overly rich and has plenty of timing advance, break in is like a Sunday cruise. Think about how much timing a motor can use at cruise. Easy 50 degrees total. And A/F ratio. 15-1 or less. The burn occurs early with no extra fuel in the pipe. Thus the pipes run cool. For sure you need a decent house fan for airflow. Just finished breaking in a coated header motor. Pipes look perfect.
Doug

Outlawd · Mar 19, 2021

dvw said:
The coating burns do to heat. Heat comes from a poor tune. If you think 3000-3500 at light throttle will kill the coating you better never drive on the freeway. If your tune is not overly rich and has plenty of timing advance, break in is like a Sunday cruise. Think about how much timing a motor can use at cruise. Easy 50 degrees total. And A/F ratio. 15-1 or less. The burn occurs early with no extra fuel in the pipe. Thus the pipes run cool. For sure you need a decent house fan for airflow. Just finished breaking in a coated header motor. Pipes look perfect.
Doug

This is true. I overheated my headers and dulled the coating because I was trying to basic tune a supercharged motor during cam break in. With a blower adding heat things got hot fast! Looking back I should have done this without the belt. As it turned out the headers don't look too bad, they just don't shine as much as they did. With a polished 871 setting on top nobody looks at the headers anyway, lol.

383man · Mar 22, 2021

dvw said:
My 360 Challenger uses TTI. Broke it in with the coating. Eventually had them relocoated 15 years later do to surface rust around the flanges. The coating never peeled or bubbled. However the coating from QC coatings in Michigan is much shinier. It also has the aluminized TTI system. Here's a pic 16 years after install with the newer header coating.
DougView attachment 1085435

Yep my TTI exh is 10 years old and still looks like brand new. Ron

1 Wild R/T · Mar 22, 2021

Like DVW said make sure you have plenty of timing and set your EFI fat... Maybe 11.5-12... It's not under load so 40-45 degrees of timing won't hurt anything & the exhaust will run considerably cooler... It's when you wind up with to little timing that the headers get cooked...

TTI Headers and cam break in

adk-roadrunner

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dvw

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Outlawd

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383man

Well-Known Member

1 Wild R/T

FBBO Gold Member

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