 | Home > Maintenance & Modifications > Air box mod and decat |
 
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20339  
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Across the range I'd have thought? $W33T $0U7H3RN $UG4R
🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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10th Mar 2014 9:56pm |
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| landybehr Member Since: 17 Apr 2013 Location: -D- Posts: 173 |
Just FI:
http://en.wikipedia.org/wiki/Hagen-Poiseui...s_notation that equation relates to fluids. But as an approximation (no more) one can think about air with it. Flow rate is "Q" and therefore the bigger, the higher the revs. Impressively important is the diameter of the tube - as it counts in the 4th degree ("r^4"). But more important  any thoughts about the heater-air-box ? !! |
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10th Mar 2014 10:30pm |
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| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558 
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on a rhd defender there is no heater intake on the side of engine air intake
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10th Mar 2014 10:36pm |
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| Anderzander Member Since: 08 Feb 2011 Location: Lancashire Posts: 1000
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Can anyone tell me what the standard inlet pipe size is on a Td5 airbox please ?
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29th Apr 2014 8:13am |
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| william8 Member Since: 03 Apr 2013 Location: Motherwell Posts: 259  
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Its always got me, the length of the pipe affects it too.
Why don't we make adaptors to fit a cone inside the air box and drill some holes in the front face of the box to reduce the heat soak and let plenty air in. Surely the heat soak would be similar to the plastic pipe running (albeit a big far) close to the exhaust. I don't go dunking in water much so have no real need for the inlet to be on the wing. Even better purchase another lid and remove the top out of it for the air and then you have two lids a sealed waterproof one and a 'high performance' one  William |
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29th Apr 2014 8:32am |
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| tuesdayfox Member Since: 23 Jun 2013 Location: Sydney,OZ Posts: 129 
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Hi guys.
thanks for everybody who have contributed to this thread,particularly tatra805 I have replaced the factory pipe with 3" pipe and the airbox received a treatment with soldering iron with the Propeller thing removed. outcomes are: my puma is definitely louder with mantel steel snorkel. but this is likely due to the relocation of air entry point (near my head!) there could be some performance gain but I don't really care. All I want is no water in the airbox, after I realized the facotry setup can even protect you from splashing... (yes, I found some water marks in the airbox after washing the fender in a puddle Martin |
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2nd Jun 2014 1:52am |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20339
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It's worth while doing, I am wondering what the mpg differences are though..
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2nd Jun 2014 9:34am |
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| theorangebandit Member Since: 03 Jun 2013 Location: Stowmarket Posts: 862 |
My mpg doesn't seem to have changed much but then my driving style doesn't allow for mpg changes as I simply drive my truck. I do 70 on motorways and I over take using speed.
My induction mod has given me a better feel for the engine better response on throttle and less judder in gear changes. I'm sure I get a better torque range as pulling away in 2nd is much smoother since the mod too. Recently added a silencer centre pipe replacement within straight through which has also increased the smoothness of gear changes and slightly believe it or not quieter engine note I will how ever mod my mod in the future instead utilising the wing top for the snorkel entry as a four inch pipe is a little too big for the gap above the steering column and it has rubbed a little. So my next mod is to create a Southtown style snorkel and make a new air box that will take the older style cylinder type filter cartridge this again will be sealed and will include some dorm of silicone Hosing |
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10th Jul 2014 6:37am |
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| Stue5 Member Since: 06 Jul 2014 Location: Marche Posts: 111  
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Apologies if I have miss understood.... I thought of this YouTube channel which test out cold air intakes which is quite interesting. (Guess my defender is a factory made racer  )
No down sides to doing this mod on a td5 rhd? Any water "baffles ect" I would lose and make my engine more vulnerable? Range Rover p38 4.6 99 lpg(gone  ) |
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10th Jul 2014 2:12pm |
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| Stue5 Member Since: 06 Jul 2014 Location: Marche Posts: 111
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Sorry for got to add the link!
Range Rover p38 4.6 99 lpg(gone ) |
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10th Jul 2014 2:14pm |
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| derbywill Member Since: 25 Mar 2010 Location: Derbyshire Posts: 556 
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Has anybody managed to replace the air intake from the wing to the air box with a larger one on a td5 with abs?
Or do any of the tuners do a kit ? Will 2005 90 XS 1954 86'' Series 1 tilt 1968 88” 2A 200tdi 2002 110 Hardtop |
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13th Jul 2014 8:58pm |
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| JWL Member Since: 26 Oct 2011 Location: Hereford Posts: 3443 
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I keep looking at mine with the amount of room there is down there and keep thinking about changing the snorkel to a military type one that goes into the engine bay through the wing top blank plastic cover and bypass the lack of room issue.
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13th Jul 2014 9:42pm |
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| LandieG Member Since: 13 Mar 2013 Location: nr Caerphilly Posts: 91 |
what size is the tube at the airbox? (sorry dumb-ass question, but my truck is in the paintshop being bling'd otherwise I'd measure it!)
I am looking at joining this: http://www.ppcages.com/?page_id=194 via something like this: https://www.devon4x4.com/d44-snorkel-adapt...wards.html to the airbox.... was thinking all 76mm (3") tubing, silicon +/- alloy for the straight bits any hints / tips for this? G |
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16th Mar 2016 4:28pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Ha funny. I was just drawing up an adapter like the D44 one... Jes... How much?????? Mating it to a mantec plastic RAI and safety devices roll cage.
Such a pity no one does a safari-like RAI to fit wit roll cages. |
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16th Mar 2016 5:40pm |
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