Several performance and hyper-milers recommend removing hood liner / insulation
#1
Several performance and hyper-milers recommend removing hood liner / insulation
Google removing hood insulation (or liner) and you'll see people who claim to be engineers and hybrid hyper milers say it's for sound deadening only and only traps heat...
I suppose if you live in a cold weather area it may help a little, but even at the same time, you can have an electric engine heated which negates the need for insulation...Furthermore, I'm in a very warm state...So other than aesthetics and sound deadening is there any reason to keep it on? I have the "hot air" pulley and am trying to minimize heat anyways...
I suppose if you live in a cold weather area it may help a little, but even at the same time, you can have an electric engine heated which negates the need for insulation...Furthermore, I'm in a very warm state...So other than aesthetics and sound deadening is there any reason to keep it on? I have the "hot air" pulley and am trying to minimize heat anyways...
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bfsgross (01-09-2012)
#4
No surprise it's for sound deadening, never thought it would be anything else, I'm running an upgrade pulley and use an OBD reader for continuous monitoring, you would be amazed to see how hot the intake temp gets at idle, but it rapidly drops to ambient once moving, I can't see removing that liner making a worthwhile difference.
#5
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The blanket is for sound deadening as stated above, but removing it to 'cool the engine' is counterproductive when attempting to increase mileage. The hotter the engine, the better.
Cold air= increased HP
Hot engine= increased HP
Cold Air+Hot engine= greatly increased (optimised) HP
Cold engines 'waste' heat energy by transferring it into the atmosphere via the cooling systems rather than pushing the pistons.
Cold air= increased HP
Hot engine= increased HP
Cold Air+Hot engine= greatly increased (optimised) HP
Cold engines 'waste' heat energy by transferring it into the atmosphere via the cooling systems rather than pushing the pistons.
#7
That is what I would think as well.
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#8
Thermodynamic engineers/race gurus and hyper milers seem to go against what Jag dealers say...
Last edited by Bacardi 151; 01-09-2012 at 06:57 AM.
#9
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bfsgross (01-09-2012)
#10
#11
Good points...Performance isn't my goal, longevity is, even though I can't imagine this having any major impact...
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Bacardi 151 (01-09-2012)
#13
Google removing hood insulation (or liner) and you'll see people who claim to be engineers and hybrid hyper milers say it's for sound deadening only and only traps heat...
I suppose if you live in a cold weather area it may help a little, but even at the same time, you can have an electric engine heated which negates the need for insulation...Furthermore, I'm in a very warm state...So other than aesthetics and sound deadening is there any reason to keep it on? I have the "hot air" pulley and am trying to minimize heat anyways...
I suppose if you live in a cold weather area it may help a little, but even at the same time, you can have an electric engine heated which negates the need for insulation...Furthermore, I'm in a very warm state...So other than aesthetics and sound deadening is there any reason to keep it on? I have the "hot air" pulley and am trying to minimize heat anyways...
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Bacardi 151 (01-09-2012),
bfsgross (01-09-2012)
#14
Mine is off, allows cool air over the intake pipe and oil coolers and the temps on these are lower to the touch than with it and under hood temps are lower, plus i love the extra intake/charger noise i can hear sports mode sounds great. Easy to take of and refit and does not interfere with washer tubes. Sounds like it is going harder, whether it really is who knows, who cares, live for the noise... ... I am going to look at bonnet venting as well...
#15
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#17
Deal on a HDE Thermometer
http://www.amazon.com/dp/B002YE3FS4/...m&linkCode=as1
After looking at my liner, my liner seems to be in danger of falling off anyways...Terrific...
http://www.amazon.com/dp/B002YE3FS4/...m&linkCode=as1
After looking at my liner, my liner seems to be in danger of falling off anyways...Terrific...
#18
You can try an old rallycar trick instead. It was used, and may still be used, in classes where body modifications were not permitted. But, badly fitting panels were of no concern
If you have a rubber gasket at the scuttle to hood interface, remove it to let air flow out. You might even raise the hood just a bit with several thick fender washers if the hinge is at the back. Letting the air flow out cools the engine bay and creates downforce. Or at least lessens up force from the bernoulli effect.
If you have a rubber gasket at the scuttle to hood interface, remove it to let air flow out. You might even raise the hood just a bit with several thick fender washers if the hinge is at the back. Letting the air flow out cools the engine bay and creates downforce. Or at least lessens up force from the bernoulli effect.
Last edited by plums; 01-09-2012 at 06:07 PM.
#20