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ANY BUDDING ENGINEERS OUT THERE - HEAT SHIELD ? 

 

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 Post subject: ANY BUDDING ENGINEERS OUT THERE - HEAT SHIELD ?
Posted: Sat Mar 04, 2006 5:05 pm 
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im gonna make a heat shield to mount on my lpg converter to protect it from radiant heat from the extractors

couple of ?'s

what would be the best material to use - mild steel/aluminium/stainless steel

polished or painted or some type of insulating material fixed on
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Posted: Sat Mar 04, 2006 5:13 pm 
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Here' a pic of mine in stainless

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Not only does it look good but it is effective in keeping temps down.

See Corey or Adam at Fisher Performance Muellers Rd Hampstead Gdns.

 

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Posted: Sat Mar 04, 2006 5:14 pm 
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bend up a giveway sign :)
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Posted: Sat Mar 04, 2006 5:38 pm 
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opto - is that shield insulated at all - that would get bloody hot wouldnt it?
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Posted: Sat Mar 04, 2006 5:51 pm 
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tiny56 wrote:
opto - is that shield insulated at all - that would get bloody hot wouldnt it?
it soaks up heat & holds it longer.

 

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Posted: Sat Mar 04, 2006 6:12 pm 
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Yeah I was told stainless conducts heat well, not recommended for heat shields.

Unless the stainess joint i spoke too were just lazy and didn't want to make me one..

 

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Posted: Sat Mar 04, 2006 6:42 pm 
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thats what i figured - for a heat shield you would want a poor conductor of heat would'nt you? :?
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Posted: Sat Mar 04, 2006 6:48 pm 
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Of course stainless steel will soak up some heat particularly if it is in contact with the heat source. I ran an Infra Red Raytek Temperature gun over the engine bay, the manifold near the head temps were as high as 160 degrees C and the extractors at around 80 to 120 degrees C, however, due to the air gap between the stainless steel heat shield, the temperature was constantly at around 60 to 70 Degrees C on th heat shield, in my opinion that is effective as the heat does not rise directly into the upper engine bay.

I have no vibration or noise


If you feel that is not effective you may want another around the lpg heat exchanger.

 

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Last edited by opto on Sat Mar 04, 2006 8:23 pm, edited 2 times in total.

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Posted: Sat Mar 04, 2006 7:14 pm 
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it looks kewl anyway - does it vibrate at all
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Posted: Sat Mar 04, 2006 7:35 pm 
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acl make a special product for exhaust heat sheilds, comes as a sheet that you bend up to shape, don't know the cost.

for the converter just make it out off some steel sheeting, don't know which one, and make sure there is a gap between the converter and sheild, the air will act like insulation.

 

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Posted: Sun Mar 05, 2006 7:23 am 
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or you could paint the top side matt black & leave the side facing the headers shiny. that way you maintain the heat within the headers for scavenging. matt black is a great heat dissipater, you can loose as much as 5.C to 15.C. try the raytek on it.

 

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