Temperature of the Exhaust Manifold?
Originally Posted by ejmack1
How hot does the Manifold and turbo housings get?
The exhaust gasses probably peak around ~1600F, the manifold will be a little cooler.
Jetcoat will coat up 2,000 degress.http://www.scuderiaciriani.com/rx7/exhaust.html#COA
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Joined: Oct 2001
Posts: 6,279
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From: Florence, Alabama
i wouldn't recommend thermo coating your oem turbo manifold. it is already way past it's ability to absorb the heat from the rotary as proved by the fact that most oem manifolds have lots of severe heat stress cracks.
in addition, if i were running an oem turbo setup i would be looking for ways to radiate the manifold heat away from the motor. the manifold is 22 pounds of heat retaining cast iron and heat soaks the motor something awful.
i believe the 22 pounds of cast iron may be at the top of the list of rotary engine killers. remember that the rotary makes approx 500 degrees more exhaust temperature than a piston engine.
howard coleman
in addition, if i were running an oem turbo setup i would be looking for ways to radiate the manifold heat away from the motor. the manifold is 22 pounds of heat retaining cast iron and heat soaks the motor something awful.
i believe the 22 pounds of cast iron may be at the top of the list of rotary engine killers. remember that the rotary makes approx 500 degrees more exhaust temperature than a piston engine.
howard coleman
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Lawn Ornament
Joined: Apr 2001
Posts: 2,416
Likes: 2
From: St Louis, USA
Originally Posted by howard coleman
i wouldn't recommend thermo coating your oem turbo manifold. it is already way past it's ability to absorb the heat from the rotary as proved by the fact that most oem manifolds have lots of severe heat stress cracks.
in addition, if i were running an oem turbo setup i would be looking for ways to radiate the manifold heat away from the motor. the manifold is 22 pounds of heat retaining cast iron and heat soaks the motor something awful.
i believe the 22 pounds of cast iron may be at the top of the list of rotary engine killers. remember that the rotary makes approx 500 degrees more exhaust temperature than a piston engine.
howard coleman
in addition, if i were running an oem turbo setup i would be looking for ways to radiate the manifold heat away from the motor. the manifold is 22 pounds of heat retaining cast iron and heat soaks the motor something awful.
i believe the 22 pounds of cast iron may be at the top of the list of rotary engine killers. remember that the rotary makes approx 500 degrees more exhaust temperature than a piston engine.
howard coleman
dont have to worry about that hunk of metal
Originally Posted by howard coleman
i wouldn't recommend thermo coating your oem turbo manifold. it is already way past it's ability to absorb the heat from the rotary as proved by the fact that most oem manifolds have lots of severe heat stress cracks.
in addition, if i were running an oem turbo setup i would be looking for ways to radiate the manifold heat away from the motor. the manifold is 22 pounds of heat retaining cast iron and heat soaks the motor something awful.
howard coleman
in addition, if i were running an oem turbo setup i would be looking for ways to radiate the manifold heat away from the motor. the manifold is 22 pounds of heat retaining cast iron and heat soaks the motor something awful.
howard coleman
It seems to me horsepower heat soaks the motor more than a hunk of additional metal. The only real solution is a different manifold that can handle more rapid cooling, and then to remove the heat shields. But I guess inconel turbo housings might get a tad costly
Dave
Last edited by dgeesaman; Sep 27, 2004 at 05:17 PM.
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Joined: Apr 2002
Posts: 1,336
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From: Dayton, OH
Originally Posted by c00lduke
I used the JetHot 1300 on my manifold and it started peeling off pretty soon. I've put the 2000 on and so far so good.