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Home > Technical > Air intake on early defender

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Gas man Member Since: 29 Jun 2017 Location: East Yorkshire Posts: 33

Air intake on early defender I have an early 1985 defender 110. It doesn’t have the air intakes on the side of the front wings, and the vent on the passenger side wong top goes to the heater box. The current air filter assembly just points the inlet to the front of the passenger front wing, behind the headlight. Is this correct? I’m thinking about changing to a 300tdi and reusing the discovery 300tdi square air filter box, but again, where should the inlet to that actually be? Or am I better sticking with this unidentified air filter metal box? I don’t want to fit a snorkel, as much looking as standard as possible. Click image to enlarge Much appreciated!

5th Nov 2017 11:45pm

LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11240	Yeah, that set up is correct for the year . The intake in the side of the wing came in with the 200tdi engine. Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia
6th Nov 2017 7:42am

geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4401

If you are considering an engine transplant then the more modern 200/300/td5 engines really benefit from a fresh air intake. Whether that be in the standard position in the side of the wing or the military raised air intake position in the top of the wing. The former would, if you want to remain 100% standard mean purchasing a replacement wing (or outer wing skin) and a respray. If you were to acquiesce to fitting a raised air intake then you could easily get away with fitting something like a southdown 4x4 RAI that would simply pass through the top of your wing and connect to whatever airbag you have under the bonnet. Like this - https://www.landyzone.co.uk/attachments/110-022-large-jpg.15512/ How far are you willing/wanting to go? Replacing even with a 200tdi is a massive upgrade in performance from a TD as well as reliability.

6th Nov 2017 9:29am

Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6482	LandRoverAnorak wrote: Yeah, that set up is correct for the year . The intake in the side of the wing came in with the 200tdi engine. The 2.5TD also had a wing-side intake   1988 90 Td5 NAS soft top 2015 D90 XS SW
6th Nov 2017 9:44am

LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11240	Ah sorry, my mistake. I forgot (or probably blanked from my mind) the 2.5 Turbo! Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia
6th Nov 2017 9:55am

Mo Murphy Member Since: 01 Jun 2008 Location: Letchworth Garden City, Herts Posts: 2079	It does look like there's a TDI in there already ! Mo The Land Rover 90 - Many are called, few are chosen.
6th Nov 2017 1:04pm

geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4401	Martin wrote: LandRoverAnorak wrote: Yeah, that set up is correct for the year . The intake in the side of the wing came in with the 200tdi engine. The 2.5TD also had a wing-side intake Not all of them... This is an original 2.5 TD on an E plate IIRC.
6th Nov 2017 2:34pm

geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4401	Mo Murphy wrote: It does look like there's a TDI in there already ! Mo You are not wrong there. It does look suspiciously like a Disco TDI...
6th Nov 2017 2:35pm

LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11240	After a bit of image Googling, it looks like the side vent may have been introduced on civilian models somewhere in the 'E' / 85MY. Click image to enlarge This one is described as a 1984 model. Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia
6th Nov 2017 2:46pm

defender9 Member Since: 12 Mar 2016 Location: Fylde Coast Posts: 1613	wasn't the 85 model year given C registration?
6th Nov 2017 3:17pm

LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11240	Argh yes, of course! The Diesel Turbo was introduced in '86, which would make the very earliest ones on 'C' plates so if Geoblokes' picture is right, the vent must have been introduced some time during the '87 MY. Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia
6th Nov 2017 3:35pm

geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4401	Hey LRAnorak I am not appreciating the severity of doubt in your typing... what do you mean "If"...?! Of course I am right...
6th Nov 2017 4:38pm

dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554	Land Rover 109 Santana wings and air box pos
6th Nov 2017 4:57pm

LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11240	geobloke wrote: Hey LRAnorak I am not appreciating the severity of doubt in your typing... what do you mean "If"...?! Of course I am right... 'IIRC' suggested scope for an element of doubt  Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia
6th Nov 2017 5:13pm

Gas man Member Since: 29 Jun 2017 Location: East Yorkshire Posts: 33

Thanks all, There is a discovery 200tdi in there already, I’m not sure if it was a 2.5d or 2.5TD before - I think it was the 2.5D C reg. However, I have a low mileage complete discovery 300tdi and so fancy transplanting that in whilst I rebuild on a galv chassis as I haven’t had a 300tdi before. I want to keep it factory looking, so would rather avoid a snorkel, so perhaps a later passenger outer wing with air intake is required. Looking at pics on the internet, it seems some use the square plastic discovery air box mounted on passenger side, where as others use a metal one on drivers side. I have the choice between the disco plastic one and the metal one that’s currently in. I can modify the later if needed with a bit of welding, so the next question is what would folks recommend please (and which side wing air intake?) Thanks!

6th Nov 2017 6:55pm

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