Roman Posted December 31, 2011 Share Posted December 31, 2011 Hey guys, Basically I've got a few areas of my car which I want to protect a little better from exhaust heat, and for the exhaust manifold I want some type of shielding that will stop radiant heat from cooking the engine bay or melting things or whatever. Exhaust wrap seems PERFECT apart from the fact that the friggen stuff is useless and discintegrates almost just after you've finished putting it on. bah! Ceramic coating of the exhaust manifold is an option, but $$ and does this wear off, or stop much in the way of radiant heat? I understand why/how it works but I cant help but be a little skeptical that such a thin coating can prevent a really hot manifold from radiating heat in the same way that exhaust wrap could... For another area, I just want a patch of (xyz material) to be stuck to the underside of the car, so it's not being heated where the exhaust is very close. Any reccomendations on what would suit, in each case? (that isnt exhaust wrap) I had limited success heat wrapping the 2-1 section and then hose clamping a 1mm thick aluminium sheet around it to protect it, but this isnt going to work for the 4-2 section where the shape is more complicated. Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted December 31, 2011 Share Posted December 31, 2011 hey man, what about something like this? http://www.trademe.co.nz/motors/car-par ... 058559.htm I'm sure the aluminum is good for the heat but not sure how long the adhesive could stand being hot? Quote Link to comment Share on other sites More sharing options...
bubblegoose Posted December 31, 2011 Share Posted December 31, 2011 1mm alloy-some cheap fibreglass cloth-1mm alloy. add some rivets and hey presto and easy to shapes heat sheild to bolt/rivet to engine bay parts etc Quote Link to comment Share on other sites More sharing options...
H05TYL Posted December 31, 2011 Share Posted December 31, 2011 Ideally you want an air gap between the source of the heat and the shield, and another air gap between the shield and whatever it is protecting. It's not cheap, but these flexible sheets are brilliant. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted December 31, 2011 Share Posted December 31, 2011 Maybe try a sheet of stainless, with a layer of cermaic type wool. I think it's called kao wool? (We used to say it Kay-oh wool) I think it came from forman insulation. I also used to use it inside ovens back when I built those. Quote Link to comment Share on other sites More sharing options...
Jase Posted January 1, 2012 Share Posted January 1, 2012 yeah man they used to use asbestos ^ but now ceramic wool, or a lot of foam products are used now especially for stem pipes etc Quote Link to comment Share on other sites More sharing options...
fulloc Posted January 1, 2012 Share Posted January 1, 2012 This stuff is good they sell it at ACL out west Ideally you want an air gap between the source of the heat and the shield, and another air gap between the shield and whatever it is protecting.It's not cheap, but these flexible sheets are brilliant. Quote Link to comment Share on other sites More sharing options...
Roman Posted January 1, 2012 Author Share Posted January 1, 2012 Okay cheers guys, got a few other ideas now! Quote Link to comment Share on other sites More sharing options...
felixx Posted January 1, 2012 Share Posted January 1, 2012 Also have a talk to a marine engineer We used to have a material that looked like 2 sheets of tinfoil with something in the middle that we had on the engines of the trawlers Quote Link to comment Share on other sites More sharing options...
Shandangles Posted January 2, 2012 Share Posted January 2, 2012 i havnt seen first hand but the manager at my work pit crews for a trans-am, they got the headers ceramic coated, aparantly the difference was night and day, dropped exhaust mani temp by like 500 degrees. it is very expensive tho. ill be doing my mani, exhaust housing and dump pipe once i upgrade. Quote Link to comment Share on other sites More sharing options...
bubblegoose Posted January 2, 2012 Share Posted January 2, 2012 most of the temp difference from the ceramic coat comes from the change in colour, they coat it shiney silver one of the worst colours to radiate heat if you had it done matt black twould be worse im sure Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted January 2, 2012 Share Posted January 2, 2012 I can't believe that chap with the lotus has not posted in here. He's a heat shielding enthusiast. Quote Link to comment Share on other sites More sharing options...
Roman Posted January 2, 2012 Author Share Posted January 2, 2012 most of the temp difference from the ceramic coat comes from the change in colour, they coat it shiney silver one of the worst colours to radiate heat if you had it done matt black twould be worse im sure The 'best' ceramic coating that is on offer from one of the places, is black or grey. http://www.hpcoatings.co.nz/ExhaustHeat ... fault.aspx Sounds like a great option, but expensive! Quote Link to comment Share on other sites More sharing options...
Bling Posted January 3, 2012 Share Posted January 3, 2012 Bazda sells that gold shiz on TS Quote Link to comment Share on other sites More sharing options...
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