Vehicle & Technical > Discovery
Homemade disco snorkle Anyone done it?
Darren:
When I fitted a Safari to my 300tdi DI there was a small but noticable increase in performance. I put this down to the less restrictive nature of the pipework compared to the original set-up, but I guess it depends on the state of tune of the engine too. It definitely wasn't any sort of ram air effect as t was most noticable at low speeds.
If you're really keen to minimise airflow restrictions then I'd suggest using as little flexible ductwork as possible. The ridges that allow it to flex will also slow down the air (theoretically, at least) and the fact that it can move will also absorb some of the energy of the airflow. Properly formed bends, even if you use drainpipe fittings, will be better for airflow. Having said all that, I'd hazard a guess that the difference is fairly marginal, though, particularly on a diesel engine.
Chris Putt:
I think its fair to say that this task is going to be faff-tastic. Ill have alook round the workshops tomorrow and see whats lying about and experiment a bit, im a bit concerned that my actual 'snorkel pipe' so to speak (the bit up the side of the screen) is going to have to be quite narrow and therefore will be quite restrictive but we'll see. Got to deal with a few rust issues as well tomorrow a friend is doing some welding and Im doing some rust preventing/removing so should be fun.............
Darren:
From memory, the Mantec design has a 63mm dia. pipe and I wouldn't go any smaller than that. The Safari is a good bit bigger.
Given the choice, I'd aim for something abot 75mm dia.
simondarby:
I did notice a slight dip in performance after fitting my snorkel and mine uses at least 2.5" diameter exhaust pipe...
Skibum346:
--- Quote from: "Chris Putt" ---...im a bit concerned that my actual 'snorkel pipe' so to speak (the bit up the side of the screen) is going to have to be quite narrow and therefore will be quite restrictive but we'll see...
--- End quote ---
I used Marley narrow drainpipe which IIRC is 64mm and it sits up the side of the windscreen at the drivers side and doesn't impact on vision noticably. :D
As Darren already suggested... the bigger the better... no air no bang no go! :(
Oh... and thanks to Cardiff-Gareth for the ref! 8)
Skibum
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