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party monkey

Member Since: 31 Dec 2010
Location: Oxon.
Posts: 1311

2005 Defender 110 Td5 XS CSW Cairns Blue

Experimenting with a heater air scoop - numpty question

Folks,

The heater in my '05 Td5 is pretty good.... Nothing fantastic but capable.

I've read so many threads on various forums on the pros/cons of a heater air scoop that I decided to get one and just see if there was any noticeable difference.

It's a dead easy fix and no problems there but I have a rather silly question.........

Should you replace the existing plastic wing top grille, or should you simply stick the scoop over the top of the existing?

My logic was to stick over existing given that ...
1) The scoop fits snugly over the existing grill, like it's meant to be so.
2) The scoop does have a grille but I thought it perhaps better to have both scoop grille and old grille in place to minimise the amount of crap that could be collected going into the heater
3) The existing grille has what I can only describe as some 'baffles' built into it, which I guess help with directing/regulating air flow.

All that said though, please correct me if that is not the right way to do it......

Cheers Jon - 110 td5 [sold]. Currently Defenderless.

5th Feb 2011 8:21pm

Zinke

Member Since: 27 Jan 2009
Location: Scunthorpe
Posts: 670

I would say its designed to replace the original one but if it fits nicely over the original one and looks good then just fit it over the top, it will stop leafs being sucked up and getting stuck in your heater matrix.

Pete.

5th Feb 2011 8:37pm

T1G UP

Member Since: 08 Dec 2009
Location: Bath
Posts: 3101

2011 Defender 110 Puma 2.4 XS CSW Orkney Grey

leve the originl on as you'll need that in there when you have to grab ll the leaves out of the scoop

5th Feb 2011 9:01pm

Glynparry25

Member Since: 16 Feb 2009
Location: Miserable Midlands
Posts: 3015

2009 Defender 110 Puma 2.4 XS DCPU Tonga Green

Another reason why to leave the origional in........ You won't loose it!! Don't you hate it when you try to put something back to origional and you can't remember where you put the part

Glyn

5th Feb 2011 9:05pm

party monkey

Member Since: 31 Dec 2010
Location: Oxon.
Posts: 1311

Thanks folks... over the top it is....

Should have had the courage of my convictions on that one but very much appreciate the sense check

Jon - 110 td5 [sold]. Currently Defenderless.

5th Feb 2011 9:53pm

party monkey

Member Since: 31 Dec 2010
Location: Oxon.
Posts: 1311

Scoop fitted.... Would have liked to have counter sunk the screws but the thickness of the plastic prevented it... will teach me to buy tat off ebay I guess

So now the next question...... 1 scoop or 2 ?

Click image to enlarge

Second scoop just for cosmetics of course....

Click image to enlarge

What you reckon ??? Jon - 110 td5 [sold]. Currently Defenderless.

6th Feb 2011 9:24am

K9F

Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey

I had the same dilemma when fitting the KBX Scoops! As one who suffers from a slight case of OCD I would propose two to maintain the balance and asymmetry! By removing the blanking plate and fitting the second it would also give more cooling airflow to your engine compartment! 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!!

6th Feb 2011 10:35am

mse

Member Since: 06 Apr 2008
Location: UK
Posts: 5037

2016 Defender 110 Puma 2.2 XS CSW Scotia Grey

K9F wrote:
I had the same dilemma when fitting the KBX Scoops! As one who suffers from a slight case of OCD I would propose two to maintain the balance and asymmetry! By removing the blanking plate and fitting the second it would also give more cooling airflow to your engine compartment!

I left the 2nd off as it also allows more cooling air to the enigne, water into the engine and other debris. Mike

6th Feb 2011 3:04pm

T1G UP

Member Since: 08 Dec 2009
Location: Bath
Posts: 3101

one IMO.

6th Feb 2011 3:52pm

alanhid

Member Since: 24 Jan 2010
Location: South Lanarkshire Scotland
Posts: 221

2006 Defender 90 Td5 XS CSW Bonatti Grey

So whats the verdict....do you notice any difference to the heater? Life is not a rehearsal!
Def 90td5 CSW xs 2006

6th Feb 2011 6:07pm

party monkey

Member Since: 31 Dec 2010
Location: Oxon.
Posts: 1311

alanhid wrote:
So whats the verdict....do you notice any difference to the heater?

Haven't tried it yet. Will report back tomorrow after work journeys.

And I'm being swayed to just leaving it at one.

Thanks all for input

Jon - 110 td5 [sold]. Currently Defenderless.

6th Feb 2011 6:40pm

Laurie

Member Since: 22 Feb 2008
Location: Sussex, England
Posts: 2897

2005 Defender 90 Td5 XS CSW Bonatti Grey

Would be interesting to see a Defender in a windtunnel to see how the air flows over the wings.

6th Feb 2011 7:40pm

party monkey

Member Since: 31 Dec 2010
Location: Oxon.
Posts: 1311

party monkey wrote:
alanhid wrote:
So whats the verdict....do you notice any difference to the heater?

Haven't tried it yet. Will report back tomorrow after work journeys.

And I'm being swayed to just leaving it at one.

Thanks all for input

Pleased to report that there was an improvement in the flow of air into the cab. It's not a massive improvement but certainly one that warrants keeping the scoop. What's most pleasing is that the improvement was felt from 30mph upwards, so you don't have to drive like a loon to get the benefit. Jon - 110 td5 [sold]. Currently Defenderless.

7th Feb 2011 11:12am

ickle

Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1784

2008 Defender 110 Puma 2.4 CSW Alpine White

Hi Laurie - have you or anyone else seen the effect of a brick in a wind tunnel?

On a dry day, sellotape loads of 2" bits of wool all around the area you want to test, then drive along with someone else videoing the results - real basic DIY wind tunnelling used in the 60s/70s for tuning cars.....

Lets us know how (if) you get on with it!

7th Feb 2011 2:27pm

TC

Member Since: 21 Nov 2010
Location: Gloucestershire
Posts: 715

Laurie wrote:
Would be interesting to see a Defender in a windtunnel to see how the air flows over the wings.

Good point, when you drive off with standing water on the vehicle, it doesn't so much blow back toward the screen as straight up onto the top of the screen toward the roof. I suspect the nose creates such a level of turbulence that air just lifts directly at the top of the cab missing out the wingtops all together!

7th Feb 2011 3:26pm

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