Exhaust temperatures...anyone want to guess
12-16-2007, 08:09 AM
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Exhaust temperatures...anyone want to guess
I am looking for a more effect means of insulation my exhaust pipes than merely using fiberglass lagging.
Anyone know roughly what the temperature of the exhaust gases at the outlet of the exhaust manifolds, inlet to the Y pipe, and inlet to the mid pipe?
I would check myself but I do not have one of those fancy infrared temperature pointers.
Anyone know roughly what the temperature of the exhaust gases at the outlet of the exhaust manifolds, inlet to the Y pipe, and inlet to the mid pipe?
I would check myself but I do not have one of those fancy infrared temperature pointers.
12-17-2007, 12:18 PM
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Originally Posted by gothchick
Are you FI?... I think FI temps are higher then NA?
Yeah, I figured that and being that I am STS my temperatures are going to be somewhat different than everyone elses.
I need to find some lagging material that will withstand the heat. On ships, we basically have stone based lagging around the pipes and what looks like turbo blankets on the valves. My thought was to the insulate the exhaust system with the blankets to get the most out of my turbo...
12-17-2007, 12:52 PM
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Goosegoose got his heat wrap from here http://speedzone24-7.com/exhaust-wrap.htm and he swear that it help him spool better. Downside is that he felt that his exhaust got louder so he got this http://www.magnaflow.com/02product/s...ne=main&id=845 and made a difference on sound (Just sound and no performance benefit).
I'll be putting some heat wrap, TP and Water/Meth this spring.
I'll be putting some heat wrap, TP and Water/Meth this spring.
12-17-2007, 06:01 PM
#6
NA exhaust is about 760'C at the outlet of the manifold and drops to about 450'C at the inlet of the Y pipe.
The measured temperature drop occured through 2.25" unresonated test pipes with no heat wrap.
Its a very large and rapid temperature drop over a very short distance.
The measured temperature drop occured through 2.25" unresonated test pipes with no heat wrap.
Its a very large and rapid temperature drop over a very short distance.
12-17-2007, 07:58 PM
#7
Originally Posted by Hydrazine
NA exhaust is about 760'C at the outlet of the manifold and drops to about 450'C at the inlet of the Y pipe.
The measured temperature drop occured through 2.25" unresonated test pipes with no heat wrap.
Its a very large and rapid temperature drop over a very short distance.
The measured temperature drop occured through 2.25" unresonated test pipes with no heat wrap.
Its a very large and rapid temperature drop over a very short distance.
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12-17-2007, 08:15 PM
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Originally Posted by athenG
Goosegoose got his heat wrap from here http://speedzone24-7.com/exhaust-wrap.htm and he swear that it help him spool better. Downside is that he felt that his exhaust got louder so he got this http://www.magnaflow.com/02product/s...ne=main&id=845 and made a difference on sound (Just sound and no performance benefit).
I'll be putting some heat wrap, TP and Water/Meth this spring.
I'll be putting some heat wrap, TP and Water/Meth this spring.
My nismo mid pipe has a glass pack type resonator on it and it is damn loud. Really, too loud because my buddy could hear me over 2 miles away at WOT. My car makes a Greddy TT sound quiet.
Thanks Hydra for those numbers. I knew it was going to be pretty high. Prolly some what higher with FI.
12-17-2007, 08:34 PM
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Originally Posted by Ahsmo
Yeah, that seems like it would help some and I know it would work but what I am talking about is this type approach.
My nismo mid pipe has a glass pack type resonator on it and it is damn loud. Really, too loud because my buddy could hear me over 2 miles away at WOT. My car makes a Greddy TT sound quiet.
Thanks Hydra for those numbers. I knew it was going to be pretty high. Prolly some what higher with FI.
My nismo mid pipe has a glass pack type resonator on it and it is damn loud. Really, too loud because my buddy could hear me over 2 miles away at WOT. My car makes a Greddy TT sound quiet.
Thanks Hydra for those numbers. I knew it was going to be pretty high. Prolly some what higher with FI.
Damn!!! If you go that route then let us know what you come up with... Does that work well with moisture?
12-18-2007, 03:51 AM
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Originally Posted by athenG
Damn!!! If you go that route then let us know what you come up with... Does that work well with moisture?
Originally Posted by Hydrazine
You know, I was talking to Sam@GTM about EGT's on my car and apparently, its not really all that much different when FI.
In any case, just stay below 900'C.
In any case, just stay below 900'C.
12-18-2007, 02:41 PM
#13
If I had the STS kit I'd probably get everything before the turbo jet-hot coated.
And if possible, I'd get thin fins installed lenghwise along the intake charge pipe, similar to an intercooler. fins actually can make a measureable difference ... increases the surface area of heat dissipation dramatically
And if possible, I'd get thin fins installed lenghwise along the intake charge pipe, similar to an intercooler. fins actually can make a measureable difference ... increases the surface area of heat dissipation dramatically
12-18-2007, 03:02 PM
#15
Originally Posted by Hydrazine
You know, I was talking to Sam@GTM about EGT's on my car and apparently, its not really all that much different when FI.
In any case, just stay below 900'C.
In any case, just stay below 900'C.
12-18-2007, 03:04 PM
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also most header wrap will deteriorate quickly if installed anywhere but inside the engine compartment. Water really eats the stuff up, even when properly sprayed with silicon sealant. I too would connsider jet hot or nothing....
12-18-2007, 03:56 PM
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Originally Posted by baileyrx
also most header wrap will deteriorate quickly if installed anywhere but inside the engine compartment. Water really eats the stuff up, even when properly sprayed with silicon sealant. I too would connsider jet hot or nothing....
Originally Posted by Wired 24/7
If I had the STS kit I'd probably get everything before the turbo jet-hot coated.
And if possible, I'd get thin fins installed lenghwise along the intake charge pipe, similar to an intercooler. fins actually can make a measureable difference ... increases the surface area of heat dissipation dramatically
And if possible, I'd get thin fins installed lenghwise along the intake charge pipe, similar to an intercooler. fins actually can make a measureable difference ... increases the surface area of heat dissipation dramatically
Jet-hot coated would certainly be the easiest. The charge air pipes are all jet-hot coated.
12-18-2007, 05:55 PM
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Will Jet-Hot coating better than Heat Wrap in term of keeping all the heat inside the exhaust pipe? With STS I think the #1 is keeping the exhaust hot to keep velocity and in my case (Or who ever have the new STS Piping) to keep the Charge Pipe from heating up coz it is right next to the exhaust.