Chat & Social > The Bar - General Chat
Cool under the bonnet
carbore:
I like the look of the JE engineering ECU upgrades, I think my TD4 Freelander will get one once its out of warranty.
lee celtic:
Yes I have tweeked the pump (Thanks Orange landy) and I have a K&N
What I'm thinking of is when off road and not moving fast the engine bay gets hot and having popped the bonnet while off road to check stuff like you do the top hose and steel air box have been hot to touch .
My first thought was a ali plate fitted between the engine and the air box like a heat shield then to use polystyrine veneer wrapped around the cylinder of the air box then covered with aluminised tape ,then heat proof exhaust rope around all the bends and ribbon around the straight bits again covered with ali tape . I have two 5" motorcycle cooling fans to fit to the intercooler to increase low speed air flow and as soon as the exhaust starts to blow the middle box is history :D
I did see kenlow have made fans that blow down through the bonnet to cool things down but the thought of blowing a bow wave straight down onto the engine makes me think No.
Range Rover Blues:
Well I noticed that the bottom pipe on the 300TDi RRC is insulated from new, don't now whether it's a noise or heat issue though.
It can't hurt to insulate them, but the exhaust wrap is a good idea, it keeps the speed of the exhaust gas higher so should release a little more power.
carbore:
Id be careful about using polystyrine could melt/catch fire.
The thermal tape I linked form ebay is great. I stuck some one a bit of card and tested it with an IR thermometer both on and off the tape when I held the card up to the fire. Made a huge difference. Slapped it all over the filter cone on the Elise.
kourgath:
I have used the same 'sock' stuff that carbore linked to from Demon Tweeks.
Reduced underbonnet temp noticably. Previously used the wrap stuff, sock way easier to fit, just not as neat. The 4.6 generates so much heat when do stag do's off-road that I had to add more fans and cut holes in the bonnet to let the hot air out. Pootling along a 5mph doesn't create an underbody air current :-)
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