TTI Headers and cam break in

adk-roadrunner · Mar 17, 2021

Hey guy's I'm getting ready to order a set of TTI headers and a full exhaust for my 73 Roadrunner. I'm ordering everything I need as I will be dropping my new 440 and trans into the car soon once the snow and salt is gone here and I can pull it out of storage. My question is what do people do for exhaust during cam break in when everything is brand new? TTI states that breaking a cam in with their headers on your car will void the coating warranty and probably ruin the ceramic coating and finish. kind of leaves me in a situation as my old exhaust from the 318 definitely isn't going to work lol.

493 Mike · Mar 17, 2021

adk-roadrunner said:
Hey guy's I'm getting ready to order a set of TTI headers and a full exhaust for my 73 Roadrunner. I'm ordering everything I need as I will be dropping my new 440 and trans into the car soon once the snow and salt is gone here and I can pull it out of storage. My question is what do people do for exhaust during cam break in when everything is brand new? TTI states that breaking a cam in with their headers on your car will void the coating warranty and probably ruin the ceramic coating and finish. kind of leaves me in a situation as my old exhaust from the 318 definitely isn't going to work lol.

Time to build that run-in stand you always wanted!
Mike

69L48Z27 · Mar 17, 2021

That’s a tough one. I know what there trying to protect themselves from but seriously, now I need to change valve springs and exhaust just for break-in. Sheesh.
Hopefully someone will have direct experience with that header and coating during break-in.

Don Frelier · Mar 17, 2021

Maybe just keep your eye out for old rusty ones that someone is done with.
Or good old fashioned manifolds but I would like to have mufflers so I could hear what's going on in the engine.

adk-roadrunner · Mar 17, 2021

493 Mike said:
Time to build that run-in stand you always wanted!
Mike

engine run stand would be awesome but any extra money I have is going into my new drivetrain

68 HEMI GTS · Mar 17, 2021

Gotta make sure it’s got enough fuel and timing. I discolored a few tubes on mine during cam break in. Turned them dull in spots.

adk-roadrunner · Mar 17, 2021

68 HEMI GTS said:
Gotta make sure it’s got enough fuel and timing. I discolored a few tubes on mine during cam break in. Turned them dull in spots.

View attachment 1085234

I'll be fuel injected as I have the Edelbrock E street EFI I've had it on the 318 for a while now I'll just have to enter the new engine settings before start up. Maybe that will help a bit but would suck to destroy the headers.

Mark Barnes · Mar 17, 2021

68 HEMI GTS said:
Gotta make sure it’s got enough fuel and timing. I discolored a few tubes on mine during cam break in. Turned them dull in spots.

View attachment 1085234

I did that same thing when I built my '57 Chevy. Turned the Hooker fenderwells orange before I figured out the exhaust valve rocker clearances were too tight.

Fran Blacker · Mar 17, 2021

Me 3, vacuum leak leaned out a couple of cylinders. So your taken your chances. Somebody with a heat senor gun checking each header tube often might work. Then you could shut before it got to hot.

dvw · Mar 17, 2021

Make sure the fuel mixture isnt rich. The engine won't be under load. As soon as it starts put 45-50 degrees total timing in it. The burn will be earlier. The headers will run cooler. The coating will live.
Doug

Tman100 · Mar 17, 2021

We broke a 440 in a few years ago with Tti headers. The coating got discoloured and a few years later the ceramic coating started coming off. A trip to the blaster and took it to a guy that does ceramic coating and they were like new again. I learned from his experience and took my 440 to the dyno for break in and several pulls, a great way to seat the rings also

. Even got the carb partially adjusted while it was on the stand and set the timing. Was the best $700 I spent. Knew there were no issues before I put in the car and when it was time to fire in the car with my new tti headers not even 2 revolutions and was running perfectly.

snakeoil24 · Mar 17, 2021

I would build a exhaust system from stainless and skip the tti exhaust system entirely. Aluminized for the money they ask just does not make sense. Also look at a pype's system under 300.00

BLK 68 R/T · Mar 17, 2021

adk-roadrunner said:
Hey guy's I'm getting ready to order a set of TTI headers and a full exhaust for my 73 Roadrunner. I'm ordering everything I need as I will be dropping my new 440 and trans into the car soon once the snow and salt is gone here and I can pull it out of storage. My question is what do people do for exhaust during cam break in when everything is brand new? TTI states that breaking a cam in with their headers on your car will void the coating warranty and probably ruin the ceramic coating and finish. kind of leaves me in a situation as my old exhaust from the 318 definitely isn't going to work lol.

Order the headers bare. Once break-in is done send them back to have them coated.

1967coronet · Mar 17, 2021

I have a pair of cast iron non hp log exhaust manifolds off a 383.
You can have them for the shipping cost.
PM me if you want them.

adk-roadrunner · Mar 18, 2021

Was offered to use a set of hp manifolds for break in locally . I guess I'll just have to fab some small pipe sections with some flanges to exit exhaust where it won't effect anything. I'll also need to weld a bung on one side for the wideband o2 that goes with the e street efi. The flanges are only 15 bucks a piece and I'm sure I can find a couple old pieces of exhaust to make something work.

dvw · Mar 18, 2021

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.
Doug

slepr1 · Mar 18, 2021

I was worried about my new tti headers on break in so I booked a dyno break in and tuning. Cost me $400 and would do it again. They used their headers for break in.

Outlawd · Mar 18, 2021

I broke my cam in with Doug's headers ceramic coated. they told me not to but did it anyway and of course it dulled them like they said it would but they still look better than non coated headers. If I could do it over again I would have used my old crappy headers for break in. I got lazy and didn't want to deal with changing them out twice.

adk-roadrunner · Mar 18, 2021

1967coronet said:
I have a pair of cast iron non hp log exhaust manifolds off a 383.
You can have them for the shipping cost.
PM me if you want them.

thanks for offering very nice of you. If I didn't find something locally I definitely would have taken you up on your offer.

MoparLeo · Mar 18, 2021

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.

TTI Headers and cam break in

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