Hiclone?

How is this HICLONE thing supposed to work? Seems Garrett and Allied Signal must have screwed up in a big way if a new tin pipe can make a big difference. Has anyone tested this scientifically or is this another 4x4 urban legend?

BM

ive no idea, but i reckon its just a load of bollocks.
expensive ones too.

Love to see some proper dyno tests on it.

If it sounds to good to be true-----then it probably is.

edit your post and take the,, probably,, out.

It sounds about as likely to work as a clothespin on the fuel line will stop vapor lock on an old petrol engine. Not impossible, but very improbable ...

Ormus in this case yes.

Complete ****e.

Goes in the bovine excrement pile of shame with tornado hurricane exhaust vortex bollocks.

its strange how over the yrs, the car makers with thier billions of R&D budgets, and trillions spent over the last century, that not one of them came up with this idea?

Land Rover actually use it That black plastic piece with the 2 hoses beside the rocker cover on 200/300tdis. QUOTE from L.R. Offical Workshop manual Engine page 18 "Crankcase ventilation system. A breather cyclone unit, fitted to the right hand side of the rocker cover controls the rate at which air is purged from the sump, via a hose fromthe camshaft side cover to9 the rocker cover and extracts oil from the gaseous atmosphere.etc.etc" b.b

bonnybaggot said:

Land Rover actually use it That black plastic piece with the 2 hoses beside the rocker cover on 200/300tdis. QUOTE from L.R. Offical Workshop manual Engine page 18 "Crankcase ventilation system. A breather cyclone unit, fitted to the right hand side of the rocker cover controls the rate at which air is purged from the sump, via a hose fromthe camshaft side cover to9 the rocker cover and extracts oil from the gaseous atmosphere.etc.etc" b.b

Click to expand...

Absolutely. In the breather system it uses the cyclone to centrifuge the oil mist with turbulent flow, forcing it to the side walls of the unit where the oil forms a film.

In the inlet tract, non-turbulent or laminar flow is required to fill the cylinders quickly to ensure good volumetric efficiency. In contrast when it gets to the cylinder a controlled swirl is required to mix the fuel and air together.

The introduction of a cyclone upstream of the cylinder creates turbulence which is good for fuel air mixing, but it reduces the volume of air that can enter the cylinder during the inlet phase negating the benefit.

The cyclone is a physical blockage in the inlet tract which creates air resistance. In addition the turbulent air downstream bounces off the sides creating turbulence, slowing the incoming air down. Its effectiveness changes with the engine speed, but I really can't be arsed to go into the intricacies.

Sorry I didn't explain fully in the first place, but you don't always need to have witchcraft explained to know it's bogus.

And how much do these units cost?