| Heat Shield Effectivelness Question [message #217553] |
Fri, 09 August 2013 12:32  |
A Hamilto
Messages: 4508
Registered: April 2011
Karma: 39
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Senior Member |
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When I finish modifying the step in my '73 Sequoia, I will have some 3/4" plywood just a couple inches from the the exhaust pipe coming off the driver's side manifold.
I plan to put a sheet metal heat shield there to keep it from burning.
It seems to me that heat shields work by having a gap where air can flow so the shield can dissipate the heat. So the shield should have some space between it and the part being protected, right?
Does a heat shield work almost as well if attached to the part being protected without an air gap?
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| Re: [GMCnet] Heat Shield Effectivelness Question [message #217554 is a reply to message #217553] |
Fri, 09 August 2013 12:52  |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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Mark,
You really want to have the air gap between the heat shield and the wood flooring. Attach it to the wood floor and you have no heat shield, only a heat magnifier The heat shield should be attached to the exhaust pipe. There are a lot of cars and truck that have heat shields attached to their exhaust piping. You might even find some at a men mall that would work with have to make something.
JR Wright
78 Buskirk Stretch
75 Avion
Michigan
On Aug 9, 2013, at 1:32 PM, A. <markbb1@netzero.com> wrote:
>
>
> When I finish modifying the step in my '73 Sequoia, I will have some 3/4" plywood just a couple inches from the the exhaust pipe coming off the driver's side manifold.
>
> I plan to put a sheet metal heat shield there to keep it from burning.
>
> It seems to me that heat shields work by having a gap where air can flow so the shield can dissipate the heat. So the shield should have some space between it and the part being protected, right?
>
> Does a heat shield work almost as well if attached to the part being protected without an air gap?
> --
> '73 23' Sequoia For Camping
> '73 23' CanyonLands For Sale
> UA (Upper Alabama)
> "Time is money. If you use YOUR time, you get to keep YOUR money.
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: [GMCnet] Heat Shield Effectivelness Question [message #217561 is a reply to message #217554] |
Fri, 09 August 2013 13:37 |
mtnman111
Messages: 20
Registered: August 2004
Karma: 0
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Junior Member |
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I installed a sheet metal to my floor over the muffler using 9/16 nuts as spacers to encourage air flow as an insulator, works for me.
Have a great day, larry c.
On Aug 9, 2013, at 10:52 AM, John Wright <powerjon@chartermi.net> wrote:
> Mark,
> You really want to have the air gap between the heat shield and the wood flooring. Attach it to the wood floor and you have no heat shield, only a heat magnifier The heat shield should be attached to the exhaust pipe. There are a lot of cars and truck that have heat shields attached to their exhaust piping. You might even find some at a men mall that would work with have to make something.
>
> JR Wright
> 78 Buskirk Stretch
> 75 Avion
> Michigan
>
> On Aug 9, 2013, at 1:32 PM, A. <markbb1@netzero.com> wrote:
>
>>
>>
>> When I finish modifying the step in my '73 Sequoia, I will have some 3/4" plywood just a couple inches from the the exhaust pipe coming off the driver's side manifold.
>>
>> I plan to put a sheet metal heat shield there to keep it from burning.
>>
>> It seems to me that heat shields work by having a gap where air can flow so the shield can dissipate the heat. So the shield should have some space between it and the part being protected, right?
>>
>> Does a heat shield work almost as well if attached to the part being protected without an air gap?
>> --
>> '73 23' Sequoia For Camping
>> '73 23' CanyonLands For Sale
>> UA (Upper Alabama)
>> "Time is money. If you use YOUR time, you get to keep YOUR money.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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L Conley 260 glacier
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