Ceramic header break-in??
Thread Starter
Instructor
Joined: Mar 2002
Posts: 212
Likes: 0
From: Elko New Market MN
Ceramic header break-in??
Just bought new set of Dynomax ceramic headers for the freshly rebuilt motor. Motor shop tells me some ceramic headers require a break-in period, which consists of heating the pipes up for a couple minutes then allowing them to cool completely and repeating the heat-up/cool-down several times. You can see the probelm with the cam break-in requirements.
Do Dynomax ceramics require a break-in? Nothing in the literature I received speaks to it.
Thanks,
Bob
Do Dynomax ceramics require a break-in? Nothing in the literature I received speaks to it.
Thanks,
Bob
Burning Brakes
Joined: Aug 2002
Posts: 1,146
Likes: 10
From: Scottsboro Alabama
Re: Ceramic header break-in?? (Bobbyg75)
Here's what Jet-Hot says about their coated headers........
During tuning of certain engines, lean or rich fuel/air mixtures can cause hot spots around 1300 degree F. If you are not very careful, you will damage the coating and possibly the engine. The coating will definitely turn dull and possibly flake off in excess of these temperatures. During this period, we recommend using a large floor fan to cool the entire engine and headers. Ignition timing is critical to exhaust temperatures which are not reflected by the water temperature gauge. It is not unusual to see 190 degree F on the water gauge when internal exhaust temps are exceeding 1300 degree F.
During tuning of certain engines, lean or rich fuel/air mixtures can cause hot spots around 1300 degree F. If you are not very careful, you will damage the coating and possibly the engine. The coating will definitely turn dull and possibly flake off in excess of these temperatures. During this period, we recommend using a large floor fan to cool the entire engine and headers. Ignition timing is critical to exhaust temperatures which are not reflected by the water temperature gauge. It is not unusual to see 190 degree F on the water gauge when internal exhaust temps are exceeding 1300 degree F.
Safety Car
Joined: Feb 1999
Posts: 3,630
Likes: 14
From: Fountain Hills AZ
Re: Ceramic header break-in?? (Older Than Dirt)
Here's what Jet-Hot says about their coated headers........
Ignition timing is critical to exhaust temperatures which are not reflected by the water temperature gauge.
Ignition timing is critical to exhaust temperatures which are not reflected by the water temperature gauge.
