DEFENDER2.NET - View topic - Breathing easier

↓ Advertise on Defender2 ↓

Home · FAQ · New Posts · My Posts · PMs · Search · Members · Map · Calendar · Profile · Donate · Register · Log In

Home > Maintenance & Modifications > Breathing easier - added air intake

Page 2 of 4

Print this entire topic ·

Timo K

Member Since: 23 Aug 2012
Location: Helsinki
Posts: 170

It's a LHD that I imported from Germany to here in Finland.

Here's a bad quality pic but I guess it shows roughly how it looks:

Click image to enlarge

20th Jul 2014 8:44am

borderterrier

Member Since: 09 Dec 2011
Location: Surrey
Posts: 1677

2013 Defender 110 Puma 2.2 XS CSW Aintree Green

Timo K wrote:
Points to you for having the balls to cut a hole like that in your front wing... But I tihnk with that mod you completely negated any benefit of a RAI. My basic understanding of fluid dynamics would say that air is also one of these things that follow the path of least resistance, so if that piping that you added is near the diameter of anything else before the turbo, it'll suck in most, if not all of the air through that.

On the 300Tdi atleast, the standard piping for the air intake is idiotic, which is why I did this to mine:
Click image to enlarge

The effect was profound. I wasn't expecting much, but the difference was significant.

Yours is neater though, I only had some scrap bits to go with.

When he 'needs' the RAI he can block the new intake. For everyday driving the new intake provides the air.

20th Jul 2014 8:45am

K9F

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

2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey

Using the heater blank on the wing sounds a discreet and viable option perhaps? It could possibly be used in conjunction with a snow cowl. Either way I am inclined to agree that fitting a second auxilliary larger diameter inlet would negate the necessity or requirement for a RAI at all. Using the blank heater inlet is also above the recommended wading height anyway so strengthens the case for binning the second RAI completely. Drastic measures and balls the size of watermelons Matt. I take my hat off to you.

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!!

20th Jul 2014 8:50am

Timo K

Member Since: 23 Aug 2012
Location: Helsinki
Posts: 170

borderterrier wrote:

When he 'needs' the RAI he can block the new intake. For everyday driving the new intake provides the air.

True enough, but if there's no waterproofing of the system elsewhere, what was the benefit of the RAI in the first place?

20th Jul 2014 9:09am

K9F

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

None whatsoever! A raised air intake is not a snorkel unless it's been thoroughly sealed correctly! Common mistake.

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!!

20th Jul 2014 9:11am

carrotbay

Member Since: 18 Aug 2013
Location: Northants, UK
Posts: 699

2008 Defender 110 BMW M57 3.0 Diesel XS CSW Auto Santorini Black

K9F wrote:
Using the heater blank on the wing sounds a discreet and viable option perhaps?

Is this what this is doing from Nakatanenga ?

http://nakatanenga-tours.de/shop/article_O...DOAITD4%26

Can't really work it out from the photo. 2008 Defender 110 XS SW - M57N2 / 6HP28X

20th Jul 2014 9:33am

ZeDefender

Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

2011 Defender 110 Puma 2.4 SW Baltic Blue

Okay - I'll try to make this as clear as possible...

1) I want to refit the RAI to avoid dust and snow.
2) The RAI restricts air flow
3) I have increased air flow for hot/fair-weather use by adding an intake
4) I realise this negates the point of having an RAI while the extra intake is open
5) but 4) doesn't matter under normal use and I can leave the RAI fitted for when I need it
6) When I need the RAI to keep things clean under dusty/snowy/ really wet (not wading) conditions, then I just block the auxiliary intake off with a rubber plug (just ordered the rubber). Then I can pretend I just have an RAI.

Unfortunately, there is very little room under a LHD A/C Puma bonnet. Big tubes just don't fit along the normal intake path and there's no room to feed them over the top - this would have been my first choice.

Just needed to clarify the concept

Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...

Last edited by ZeDefender on 20th Jul 2014 10:07am. Edited 1 time in total

20th Jul 2014 9:58am

ZeDefender

Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

By the way Mal - just waiting for more Sikaflex to seal the RAI properly

Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...

20th Jul 2014 10:05am

carrotbay

Member Since: 18 Aug 2013
Location: Northants, UK
Posts: 699

I like the concept and sounds like a good idea .. the way you've done it looks good too.

However, I don't want to drill a hole in the wing .. also have a good change of messing it up, so was wondering if the Nakatanenga solution would do the same thing for me. I just want to be able to increase the air flow by utilising the heater vent on the top of the wing and the standard air intake on the side.

(I don't have a RAI .. nor have the need for one in my circumstances.) 2008 Defender 110 XS SW - M57N2 / 6HP28X

20th Jul 2014 10:07am

Stue5

Member Since: 06 Jul 2014
Location: Marche
Posts: 111

K9F wrote:
Using the heater blank on the wing sounds a discreet and viable option perhaps? It could possibly be used in conjunction with a snow cowl. Either way I am inclined to agree that fitting a second auxilliary larger diameter inlet would negate the necessity or requirement for a RAI at all. Using the blank heater inlet is also above the recommended wading height anyway so strengthens the case for binning the second RAI completely. Drastic measures and balls the size of watermelons Matt. I take my hat off to you.

Exactly what i looking at yesterday, Td5 rhd abs+clutch+steering = not much room i am thinking of two 70mm pipes one from the standard intake and one from the blanked wing top panel. ZeDefender brave man

Range Rover p38 4.6 99 lpg(gone

)

20th Jul 2014 10:17am

ZeDefender

Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

Well, it's been 33 degrees here and after a nice quick run on the motorway with the RAI fitted, everything is working just fine. No additional noise from the new intake and definitely no air restriction even under significant load (up hills at 150 km/h).

Just a couple more pics with the RAI (sealed well enough for now) - the second photo shows just how small the intake area is

[URL=]

Click image to enlarge[/URL]

[URL=]

Click image to enlarge[/URL]

After we've had some serious rain I'll hook the air filter out and have a look inside...

Have a good evening all

Cheers
Matt

Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated

Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...

20th Jul 2014 6:23pm

ericvv

Member Since: 02 Jun 2011
Location: Near the Jet d'Eau
Posts: 5816

2009 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black

ZeDefender wrote:
Okay - I'll try to make this as clear as possible...
When I need the RAI to keep things clean under dusty/snowy/ really wet (not wading) conditions, then I just block the auxiliary intake off with a rubber plug (just ordered the rubber).

Ahem,....

Could not stop myself

You never actually own a Defender. You merely look after it for the next generation.
http://youtu.be/yVRlSsJwD0o
https://youtu.be/vmPr3oTHndg
https://www.youtube.com/watch?v=_GtzTT9Pdl0
https://www.youtube.com/watch?v=ABqKPz28e6A
https://www.youtube.com/watch?v=rLZ49Jce_n0
https://www.youtube.com/watch?v=XvAsz_ilQYU
https://www.youtube.com/watch?v=K8tMHiX9lSw
https://m.youtube.com/watch?v=dxwjPuHIV7I
https://vimeo.com/201482507
https://www.youtube.com/watch?v=ZSixqL0iyHw

20th Jul 2014 7:19pm

borderterrier

Member Since: 09 Dec 2011
Location: Surrey
Posts: 1677

Re: Breathing easier - added air intake

ZeDefender wrote:
Hi all

I wanted to refit my RAI but with "restricted breathing" problems in the past (high temperature, high altitude, high speed) and now the bigger intercooler and hybrid turbo sucking even more air, I was a bit worried. There have been a number of air intake mods in the past but with LHD and aircon, I decided to take the bull by the horns and add one...

[URL=]
Click image to enlarge[/URL]

What pipe and end fitting did you use Ze?

Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated

20th Jul 2014 8:10pm

munch90

Member Since: 26 Oct 2013
Location: guildford
Posts: 3558

I have thought about adding a extra intake
but don't really want to cut hole in bodywork , maybe will make something for blanked heater intake ( rhd ) and won't be fitting a snow cover thing ( each to there own etc but don't like the look of them )

would make a baffled box with a drain to fit under the wing on the heater intake

20th Jul 2014 8:30pm

ZeDefender

Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

ericvv wrote:

Could not stop myself

If only you had one my size

The pipe is 80mm and comes from Ramair:
http://ramair-filters.co.uk/ducting-automo...d-cap.html

The end piece is loose so I "moulded" a mesh over it and glued the pipe over that (stretched quite nicely)

Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...

20th Jul 2014 8:39pm

Page 2 of 4

All times are GMT

Jump to

< Previous Topic | Next Topic >

Posting Rules

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum