heat sheilds for turbo
Thread Starter
Joined: Apr 2003
Posts: 170
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From: bay area, CA, USA
heat sheilds for turbo
has anyone made or know where you could buy a heat sheild for a turbo. i ran into a couple of pics of one and was thinking it looked pretty good
i have seen this done on a lot of supras and nissans but not on a honda.
i have seen this done on a lot of supras and nissans but not on a honda.
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11ty billion whp!
Honda-Tech Member
Joined: Mar 2000
Posts: 2,859
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From: Toronto, ON, Canada
Re: (Ej6andslow)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ej6andslow »</TD></TR><TR><TD CLASS="quote">99.999999999999999999999999999% for looks
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No.
Heatshields contains heat within the turbo... Reduces underhood temps...
Ceramic coating
Turbo insulation
Exhaust Wrap
Heat shields
All do the exact same thing. Some work better than others, that's all.
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No.
Heatshields contains heat within the turbo... Reduces underhood temps...
Ceramic coating
Turbo insulation
Exhaust Wrap
Heat shields
All do the exact same thing. Some work better than others, that's all.
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Posts: n/a
wow, you ppl are gullible...huh?
taht heat sheild is ****. It'll do NOTHING. IT's THIN *** steel...big deal. it'll heat up and radiate just as much heat.
now, say there were something else helping contain the heat...it'd work..but that's just for looks.
taht heat sheild is ****. It'll do NOTHING. IT's THIN *** steel...big deal. it'll heat up and radiate just as much heat.
now, say there were something else helping contain the heat...it'd work..but that's just for looks.
Member
Joined: Oct 2001
Posts: 2,022
Likes: 1
From: CA, US
Re: (Ej6andslow)
NO. open up a 1.8t and see what they have over their turbines....same as the audi race cars. what is the stock exhaust manifold heat shield made of? how bout the greddy kit? it contains heat....functional, especially with that turbo situated behind the motor.
Honda-Tech Member
Joined: May 2002
Posts: 704
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From: Sunrise, FL, US
Re: (Ej6andslow)
Ahhhhmmmm, my subaru EJ20 motor has a thin, lightweight heat shield on the turbo, You can improve on the heatshield by applying aluminum foil tape to the inside or another form of insulation...But, the heat is contained MORE with the heatshield that without it...Especially on the one that is pictured...
Joined: Jan 2003
Posts: 1,273
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From: Manchester, NH, USA
Re: (Ej6andslow)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ej6andslow »</TD></TR><TR><TD CLASS="quote">wow, you ppl are gullible...huh?
taht heat sheild is ****. It'll do NOTHING. IT's THIN *** steel...big deal. it'll heat up and radiate just as much heat.
now, say there were something else helping contain the heat...it'd work..but that's just for looks.
</TD></TR></TABLE>
You're dumb. The thickness of the steel has nothing to do with how good of a shield it is. As a matter of fact, thick steel will be the same or possibly worse, since it's just a larger amount of conductive material for the heat to transfer through.
The metal is not what shields the heat. The air pocket between the metal and the turbine housing is what really does the insulating. By trapping air, which has a relatively low thermal conductivity, you get rid of convection and all heat transfer must be done by conduction (which air is not good at) and radiaton.
Thin heat shields work very well.
taht heat sheild is ****. It'll do NOTHING. IT's THIN *** steel...big deal. it'll heat up and radiate just as much heat.
now, say there were something else helping contain the heat...it'd work..but that's just for looks.
</TD></TR></TABLE>
You're dumb. The thickness of the steel has nothing to do with how good of a shield it is. As a matter of fact, thick steel will be the same or possibly worse, since it's just a larger amount of conductive material for the heat to transfer through.
The metal is not what shields the heat. The air pocket between the metal and the turbine housing is what really does the insulating. By trapping air, which has a relatively low thermal conductivity, you get rid of convection and all heat transfer must be done by conduction (which air is not good at) and radiaton.
Thin heat shields work very well.
Honda-Tech Member
Joined: Mar 2001
Posts: 1,030
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From: San Antonio, TX, US
Re: (Ej6andslow)
FYI there is more than one type of heat conduction going on under the hood. One is convection which has already been covered. The other is radiation, the same type that travels across our solar system to warm our faces. A reflective surface is effective in reducing radiative heat. True, turbo heat shields aren't exactly the best examples of optically reflective surfaces, but we're not in a physics lab.
And for anyone that doubts a simple polished stainless steal heat shield can reduce heat temps you obviously have had zero experience with it. We tried a simple experiment and took a heating filament up to 600+ celcius. This was in a semiconductor vacuum chamber under 10-7 torr (better vacuum than space) and temps outside the shield were considerable cooler than inside. I can't remember the exact numbers, but we were surprised how effective plain polished stainless steel was. The thermocouples were right on either side of the shields to minimize the difference in temps coming from the distances from the heat source.
I can't speak for heat shields effectiveness under the hood, since I don't know the proportion of heat from convection and from radiation however I wouldn't underestimate the radiation. Even in vacuum (and hence no convection), the vacuum chamber was hot to the touch from the heater filaments inside (at 600C) and remember our egts hover around 800 C. Sorry for the long post.
And for anyone that doubts a simple polished stainless steal heat shield can reduce heat temps you obviously have had zero experience with it. We tried a simple experiment and took a heating filament up to 600+ celcius. This was in a semiconductor vacuum chamber under 10-7 torr (better vacuum than space) and temps outside the shield were considerable cooler than inside. I can't remember the exact numbers, but we were surprised how effective plain polished stainless steel was. The thermocouples were right on either side of the shields to minimize the difference in temps coming from the distances from the heat source.
I can't speak for heat shields effectiveness under the hood, since I don't know the proportion of heat from convection and from radiation however I wouldn't underestimate the radiation. Even in vacuum (and hence no convection), the vacuum chamber was hot to the touch from the heater filaments inside (at 600C) and remember our egts hover around 800 C. Sorry for the long post.
Junior Member
Joined: Sep 2002
Posts: 342
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From: Markham, ONT, Canada
Re: (stizzit)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by stizzit »</TD></TR><TR><TD CLASS="quote">02 sensor looks a little bit close don't ya think?</TD></TR></TABLE>
that's there wideband
that's there wideband