Bigj66 Posted January 2, 2021 Share Posted January 2, 2021 Can anyone recommend a self supporting heat shield material that can be formed to shape and will protect against exhaust heat? Quote Link to comment Share on other sites More sharing options...
smallfry Posted January 2, 2021 Share Posted January 2, 2021 How big does the shield need to be, and how big is the gap ? Quote Link to comment Share on other sites More sharing options...
monkie Posted January 2, 2021 Share Posted January 2, 2021 There are some ideas on this thread Quote Link to comment Share on other sites More sharing options...
Bigj66 Posted January 2, 2021 Author Share Posted January 2, 2021 2 minutes ago, monkie said: There are some ideas on this thread It’s just linking back to this thread...🤷♂️ Quote Link to comment Share on other sites More sharing options...
Bigj66 Posted January 2, 2021 Author Share Posted January 2, 2021 7 minutes ago, smallfry said: How big does the shield need to be, and how big is the gap ? I’m looking at various sizes to protect the area around the cats and in the engine bay underneath things like the expansion tank so no specific size but sheets of say 300 x 300 would work. Quote Link to comment Share on other sites More sharing options...
monkie Posted January 2, 2021 Share Posted January 2, 2021 Sorry about that, it keeps doing this when I try to insert a link from my mobile browser. Try this Quote Link to comment Share on other sites More sharing options...
Troll Hunter Posted January 2, 2021 Share Posted January 2, 2021 16 minutes ago, Bigj66 said: Can anyone recommend a self supporting heat shield material that can be formed to shape and will protect against exhaust heat? Yes, a piece of thin sheet steel, say 16 - 18 gauge, maybe 20 gauge at a pinch. It's thin enough to shape fairly easily, strong enough to be self supporting, as long as you can minimise the unsupported section, and it provides a good heat shield effect, unaffected by the heat source. And you can weld it to complex shapes if necessary, or even add stiffening/supporting sections if needed. I've used this both to protect the underbody from exhaust pipe heat and in the 300Tdi engine bay to protect the rubber air inlet hose from exhaust manifold heat. Mike 1 Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 2, 2021 Share Posted January 2, 2021 I've used thin sheet ali before, ~1mm you can bend it by hand, cut it with tin snips, rivet or weld together. 1 Quote Link to comment Share on other sites More sharing options...
Stellaghost Posted January 2, 2021 Share Posted January 2, 2021 (edited) I've got some .6mm stainless sheet I could cut into 300x300 and post down if you want, long term no corrosion issues regards Stephen Edited January 2, 2021 by Stellaghost 1 Quote Link to comment Share on other sites More sharing options...
landroversforever Posted January 2, 2021 Share Posted January 2, 2021 You can buy sheets of the dimpled heat shield stuff. Quote Link to comment Share on other sites More sharing options...
ThreePointFive Posted January 2, 2021 Share Posted January 2, 2021 I know this isn't exactly what you're after, but I've used self adhesive heat insulation from Merlin Motorsport as I was worried about the proximity of chassis legs to manifolds. They do have some (very expensive) sheeting that you can form into the shape required. https://www.merlinmotorsport.co.uk/s/heat-insulation/zircoflex-heat-insulation/zircoflex-form-structural-heat-shield Quote Link to comment Share on other sites More sharing options...
L19MUD Posted January 2, 2021 Share Posted January 2, 2021 46 minutes ago, landroversforever said: You can buy sheets of the dimpled heat shield stuff. Exactly what I did to replace the turbo heat shield on my 200tdi. It was Ali sheet Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 2, 2021 Share Posted January 2, 2021 Didn't @steve200TDi use a load of that dimpled sheet on his racer? 1 Quote Link to comment Share on other sites More sharing options...
Bigj66 Posted January 3, 2021 Author Share Posted January 3, 2021 Well if I was building myself a space shuttle instead of a V8 Landrover then I might consider that Zircoflex but Merlin also do another version which is much more palatable on the wallet. https://www.merlinmotorsport.co.uk/p/nimbus-gii-2-layer-heat-shield-material-aero-nim-s I’ll look around at dimpled ali sheeting to compare. Cheers. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted January 3, 2021 Share Posted January 3, 2021 What are you trying to protect? It will affect the choice of material, etc. Often, a simple piece of thin plate attached just proud of the surface you wish to protect is enough to stop things baking. But without knowing specifics, it is hard to suggest anything as best solution. 1 Quote Link to comment Share on other sites More sharing options...
Bigj66 Posted January 3, 2021 Author Share Posted January 3, 2021 1 hour ago, Bowie69 said: What are you trying to protect? It will affect the choice of material, etc. Often, a simple piece of thin plate attached just proud of the surface you wish to protect is enough to stop things baking. But without knowing specifics, it is hard to suggest anything as best solution. I was looking at the hose runs for the gearbox cooler and as they aren’t a million miles away from the catalytic converter I thought about putting something in between the two for times when the car is sat in traffic and the heat isn’t naturally dispersed by airflow. I’m also looking at a position for the expansion tank and fixed to the wing above the manifold would be ideal so something to shield that upward heat would be good. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted January 3, 2021 Share Posted January 3, 2021 Do the cats not have built in heat shields? They would normally... Shielding the manifold, I would work out a thin sheet steel (stainless?) bent to suit, and fixed via the manifold bolts. I'm not a fan of the flimsy tin, they seem to get bent about quite easily, and essentially wear out very quickly. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted January 3, 2021 Share Posted January 3, 2021 If I were to need one I would use this material. https://www.carbuilder.com/uk/embossed-aluminium-heat-shield-1000mm-x-1000mm?gclid=Cj0KCQiA88X_BRDUARIsACVMYD_f2ckTBgoM4eNijqva8flCnZrH6Y4SgW9WkyASEmVT3xyqJ3iDLfIaArK0EALw_wcB Mo Quote Link to comment Share on other sites More sharing options...
steve200TDi Posted January 3, 2021 Share Posted January 3, 2021 13 hours ago, FridgeFreezer said: Didn't @steve200TDi use a load of that dimpled sheet on his racer? I did! It is embossed Aluminium like this: https://www.ebay.co.uk/itm/GII-G2-Embossed-Aluminium-Heat-Shield-Material-Simgle-Layer-Sheet-Exclusive-NEW-/152936424018#:~:text=BSTFLEX embossed aluminum heat shield,has a low emissive rate. Steve 2 Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 3, 2021 Share Posted January 3, 2021 2 hours ago, Bigj66 said: I was looking at the hose runs for the gearbox cooler and as they aren’t a million miles away from the catalytic converter I thought about putting something in between the two for times when the car is sat in traffic and the heat isn’t naturally dispersed by airflow. I’m also looking at a position for the expansion tank and fixed to the wing above the manifold would be ideal so something to shield that upward heat would be good. Airflow may not help as much as you think, the radiated heat from a red-hot cat may not be knocked down much by airflow - and with the EGT's likely being a lot higher when cruising along at speed than sat in traffic... personally I'd be inclined to build it without and then do the experiment to see what you actually need, if anything. Temperature indicator labels cost peanuts and will give you a more accurate picture of what's getting hot. Quote Link to comment Share on other sites More sharing options...
Badger110 Posted January 3, 2021 Share Posted January 3, 2021 2 hours ago, Bigj66 said: I was looking at the hose runs for the gearbox cooler and as they aren’t a million miles away from the catalytic converter I thought about putting something in between the two for times when the car is sat in traffic and the heat isn’t naturally dispersed by airflow. I’m also looking at a position for the expansion tank and fixed to the wing above the manifold would be ideal so something to shield that upward heat would be good. I've removed mine and the heatshield is surplus at the moment, would it suit your needs? I took some pictures Quote Link to comment Share on other sites More sharing options...
Bigj66 Posted January 3, 2021 Author Share Posted January 3, 2021 3 hours ago, Badger110 said: I've removed mine and the heatshield is surplus at the moment, would it suit your needs? I took some pictures Cheers, where does it fit to? Quote Link to comment Share on other sites More sharing options...
Badger110 Posted January 3, 2021 Share Posted January 3, 2021 1 hour ago, Bigj66 said: Cheers, where does it fit to? It fits to the catalytic converter on the puma down pipe. 1 Quote Link to comment Share on other sites More sharing options...
ThreePointFive Posted July 26, 2022 Share Posted July 26, 2022 Sorry to revive this thread but I don't want to create my own when a lot of good info is here. I am getting excessive heat into the cabin from the exhausts running under both footwell plates and the seatbox. I have a plan to wrap the exhaust using this stuff. Unlike the Amazon special I had before, this is almost certain to not contain horrendous ingredients of dubious origin. That should deal with most of the problem, but there will still be heat from the engine and transmission that I'd like to remove as it is pretty miserable without AC. I want to put in heat insulation under the floor and up the engne side of bulkhead to the top of the footwells. I have looked at the Aluminium sheet recommended above but it is meant for creating a heat shield around a specific hot thing, so I wonder if it would work as well if affixed directly to the thing you're trying to keep cool. Without the stand-off that a heat shield gives you, I would have thought the heat just leaches through. It will also be difficult to shape accurately to the bulkhead. The only other products that seem to be designed for what I'm wanting are extremely expensive but seem like they would be more effective at keeping heat out, be easier to form to the shape of the bulkhead and add some acoustic damping too. Are there any other products people have tried/are aware of that are meant for covering reasonably large areas but which don't cost £100 for a metre squared? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted July 26, 2022 Share Posted July 26, 2022 A simple piece of very thin ali bent to shape, and fitted to the floor with a stand off will work as well as fitting it to the exhaust -you just need the air gap to make it work. 10mm is probably enough. 1 Quote Link to comment Share on other sites More sharing options...
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