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K9F



Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610
United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
I am a layman when it comes to them but engines run best (especially jet engines, something I do know a little more about) when the air is cold. I do not know the ambient temperature of the engine bay when running but it must be hotter than ambient by a considerable margine. If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!
Post #235860 15th May 2013 6:02pm
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Mynstral



Member Since: 14 Feb 2012
Location: Essex
Posts: 119
United Kingdom 2015 Defender 110 Puma 2.2 USW Montalcino Red
Don't forget the air goes through the turbo/compressor so becomes hot then cooled by inter cooler. Of curse that's if a turbo model.

Myn Smoke me a kipper I'll be back for breakfast.
Post #235868 15th May 2013 6:23pm
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3641
United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
Ive often wondered if the air intake would be better at the front in a nice cold high pressure area than in the side of the wing (only of course on a none wading landy) or picking up air from the redundant wing top vent rather than the side DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #235891 15th May 2013 7:39pm
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vogue se



Member Since: 24 Jan 2008
Location: Bocholt
Posts: 111
Belgium 2011 Defender 90 Puma 2.4 Exclusive HT Nara Bronze
bell-auto-services wrote:
Thud wrote:
An air intake cover can make any measurable difference on a defender. I don't believe that for a second.
Rolling with laughter


If a Mantek/JLR snorkle is removed to fit the wing vent it WILL make a difference for sure to power and its delivery. I have tested it on the dyno on several cars with shocking results. I dont know if a COR4 one is any better than the factory plastic wing vent but I for sure know removing the snorkle is.


Click image to enlarge


Pete



Hey Pete,

Open question?

Doing a test on road or with your dyno with side vent will not make a lot of difference?

Comparing a snorkel version on the dyno or on road will make a difference. On road (motorway), the air is pushed in the snorkel. On your dyno not. Does this give the difference or can you simulate it?

Do I make a statement with this point or not?

Regards

P
Post #236195 16th May 2013 10:40pm
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macduff



Member Since: 04 Nov 2012
Location: NE
Posts: 119
United Kingdom 
Just a quick update on this. I've eventually managed to get through a full tank of diesel since replacing the RAI with the cor4 cover and its had a fairly significant impact on mpg. Previously my rough mileage to the fuel light coming on was around 375ish miles , this time with only urban short trips it ran to 425miles before the fuel light came on. My very unscientific calculator says that I've jumped from around 26~27mpg to around 29 maybe 30..
The other noticeable benefit is the anti stall feature is working far better than it did with the RAI where it always felt like it was rough and about to stall, pulling away in 2nd is a lot easier too. 2023 110 P400e
Post #242477 10th Jun 2013 10:54am
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731
Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
K9F wrote:
I am a layman when it comes to them but engines run best (especially jet engines, something I do know a little more about) when the air is cold. I do not know the ambient temperature of the engine bay when running but it must be hotter than ambient by a considerable margine.

I tested something like this last autumn - may be interesting (last 2 posts):

http://www.defender2.net/forum/topic14242....p;start=15

Wink Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #242494 10th Jun 2013 11:43am
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