geoffbeaumont Posted July 8, 2016 Share Posted July 8, 2016 As far as I understand it, vortex inserts (whether wire, flat planes, whatever) are only ever used by serious engineers (as opposed to snake oil salesmen) to improve heat exchange by disrupting the laminar flow and avoiding a layer of slower moving cooled/heated (depending which way you're working) fluid at the out limit of the bore and a central flow of faster moving fluid which isn't taking part in the heat exchange to the same degree. It also slows the flow, which is advantageous for heat exchange but exactly what you don't want on your engine air intake. Is that about right, or am I talking rubbish? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted July 8, 2016 Share Posted July 8, 2016 I think the manufacturers cyclone looking things are more about silencing than improving air/fuel mix that the aftermarket snake oil products claim Quote Link to comment Share on other sites More sharing options...
landroversforever Posted July 8, 2016 Share Posted July 8, 2016 I think the manufacturers cyclone looking things are more about silencing than improving air/fuel mix that the aftermarket snake oil products claim Like the ones in a td5 air box.... Are they not for getting the larger particles to drop out of the air? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted July 8, 2016 Share Posted July 8, 2016 Quite possibly as well, but you would be amazed at the engineering that goes into making an engine induction noise, quiet. Quote Link to comment Share on other sites More sharing options...
Ex Member Posted July 8, 2016 Share Posted July 8, 2016 That's for a square. pie x the square of the radius gives a circular sectional area. But yes, the point is that the area increases as a function of the square..... I was simplifying it for people... There is always one person that must nitpick everything on the internet though.... Quote Link to comment Share on other sites More sharing options...
=jon= Posted July 8, 2016 Share Posted July 8, 2016 Does anyone make an off the shelf 3" snorkel, or are they all going to be homebrew jobs? Quote Link to comment Share on other sites More sharing options...
Daan Posted July 8, 2016 Share Posted July 8, 2016 http://www.ppcages.com/?page_id=194 Daan Quote Link to comment Share on other sites More sharing options...
dangerous doug Posted July 8, 2016 Share Posted July 8, 2016 =Jon= I have one sitting on the bench if it's what you want Quote Link to comment Share on other sites More sharing options...
Lewis Posted July 8, 2016 Share Posted July 8, 2016 http://www.ppcages.com/?page_id=194 Daan The top one on that page is vile Quote Link to comment Share on other sites More sharing options...
=jon= Posted July 8, 2016 Share Posted July 8, 2016 The top one on that page is vile I think there's a goldfish in the contraption at the top... Doug - PM inbound... Quote Link to comment Share on other sites More sharing options...
henk Posted July 8, 2016 Author Share Posted July 8, 2016 Doug, also interested, maybe too late? Quote Link to comment Share on other sites More sharing options...
henk Posted July 12, 2016 Author Share Posted July 12, 2016 For those interested, I now have this MAP sensor in my TD5 together with an adapted ecu so no need for a boostbox: http://www.darksidedevelopments.co.uk/products/vw-3-bar-map-manifold-pressure-sensor-large-probe-038-906-051-a.html: Quote Link to comment Share on other sites More sharing options...
=jon= Posted July 12, 2016 Share Posted July 12, 2016 I had a look at my snorkel - it appears the pipework is already 3" I read somewhere that the upturned cone pre-filter things: Have a lot more resistance than the safari type ones: I've got the former on mine, may try taking it off on a dry day, reconnecting the snorkel and seeing if it makes any difference. At the moment my intake is drawing air from close to the manifold, and hot air is never ideal! Quote Link to comment Share on other sites More sharing options...
Maverik Posted July 13, 2016 Share Posted July 13, 2016 The hot air comment is quite interesting and indeed correct, but it brought up a memory, that I remember when I re-located my air inlet when I had my bodged together Disco 200tdi air system, just moving the suction away from the hot side of the engine, I thought it made quite a difference to the nature of the engine. Also interesting comment about the snorkel tops... I have also been looking into changing from a mushroom to an alternative top as I recon its pretty restricted... was either that or drill some more holes on the mushroom to allow more air in... Quote Link to comment Share on other sites More sharing options...
=jon= Posted July 24, 2016 Share Posted July 24, 2016 Just did some very scientific testing - the car definitely feels like it goes better with the cone top removed and just a plain open pipe. I've ordered a knock-off safari style top from fleabay to try... I did wonder about trying to make a 'stumpy' snorkel - really all I need is a cold air feed for the v8 with as little restriction as possible... It's highly unlikely that I'll go wading thru 4ft of water (and if I did various other bits would stop the engine before then!) - so I wondered about a small pipe up to about the level of the window hinge with a safari top on it, but dunno if it would look ridiculous!! Quote Link to comment Share on other sites More sharing options...
geoffbeaumont Posted July 25, 2016 Share Posted July 25, 2016 If you did wade it would be very vulnerable to a wave of water coming up over the bonnet - easy to do, especially when entering the water. Quote Link to comment Share on other sites More sharing options...
henk Posted August 5, 2016 Author Share Posted August 5, 2016 So I found a nice snorkel at Billing that starts at the top with 3.5" and then goes into the side with 3" diameter but there is no way on a LHD to get the 3" tube beyond the heater. Stuck again ... Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.