Hyclone

[R33 Ribby]

been seen these ands on the tv for these hyclone things they fit into the air intake pipe and apparently make better air feul mixture. on the ad they say up to 15% more power and better fuel ecconomy. i wanted to know has anyone got one? they can be used on turbo setups aswell but un N/A guys are always in search of cheap power!!

http://www.fuelsaver.com.au/

what do u think bull shit what

[TokyoTaxi]

If anyone is, I doubt they'd admit it

[Eug]

most of these are gimmicks Kane. otherwise most people would be using them.

[GTR-32U]

i doubt these things would make that much of a difference. If you want a really cheap do it yourself mod that will get you some gain. Build yourself a cold air Ram intake.. Cold air is always easy power, Ram will give you a slight benefit at higher speed

[R33 Ribby]

sweet as was just wondering what u guys thought lol ad is starting to piss me off

[TokyoTaxi]

I'm "told' that these things do work in something like a diesel landcruiser or patrol because there is no throttle butterfly.

I discussed this with a mate some months ago ( after many beers ) and we came up with someting that "might" have worked (?), but we always had real work to do.

The theory was, if you use an RB25DE NEO engine, swap the upper section of the inlet plenum to a non-NEO one ( where the throttle normally bolts to the plenum ) but leave the NEO throttle where it is. Construct a pipe from the throttle, across the top of the engine ( with the vanes / hyclone inside ) and bolt it up to the non-NEO upper manifold section. By doing this, the swirling air from the hyclone would not be upset by the throttle butterfly and "should" have the effect it is supposed to have.

Anyway, if someone has enough spare time to try this, please let me know how it works out

[PM-R33]

Quick lesson about the hiclones. Guy in Cairns invented them, hence why you only see the ads in QLD, most people from down south have never heard of them.

The theory behind them stands true. Pretty much, when a liquid is introduced with a circular motion it increases it's velocity. Easy way to see this is getting two bottles of water. Spin one around a few times and then pour them both upside down. The one with the circular motion will empty faster.

This is how the hiclone works, introduces a circular motion into the airflow into the engine, thus increasing its velocity. All well in theory so far, however here is where it starts to fall apart in real world situations.

The problem with this thoery is it only holds if you dont disrupt the flow of the liquid. We all have something in our cars that disrupts this flow, yep you guessed it, the throttle body. With constant adjustments of the throttle, the air is stalled and actually slows down. Once again this can be seen with our two bottle theory, place your hand underneath one a couple of times to stop the flow and it will actually slow compared to the one that is untouched.

Therefore yes a hiclone works in theory, problem is in real world situations driving around town they are shit, simple as that. Best application for them, and one that most people say does in fact work well, is highway driving on cruise control, therefore no throttle body adjustments are made.

So in other words, save your money and buy something else

Isn't physics fun!

[N-DAWG]

Quick lesson about the hiclones. Guy in Cairns invented them, hence why you only see the ads in QLD, most people from down south have never heard of them.

The theory behind them stands true. Pretty much, when a liquid is introduced with a circular motion it increases it's velocity. Easy way to see this is getting two bottles of water. Spin one around a few times and then pour them both upside down. The one with the circular motion will empty faster.

This is how the hiclone works, introduces a circular motion into the airflow into the engine, thus increasing its velocity. All well in theory so far, however here is where it starts to fall apart in real world situations.

The problem with this thoery is it only holds if you dont disrupt the flow of the liquid. We all have something in our cars that disrupts this flow, yep you guessed it, the throttle body. With constant adjustments of the throttle, the air is stalled and actually slows down. Once again this can be seen with our two bottle theory, place your hand underneath one a couple of times to stop the flow and it will actually slow compared to the one that is untouched.

Therefore yes a hiclone works in theory, problem is in real world situations driving around town they are shit, simple as that. Best application for them, and one that most people say does in fact work well, is highway driving on cruise control, therefore no throttle body adjustments are made.

So in other words, save your money and buy something else

Isn't physics fun!

That's a really good explanation PM-R33

[TokyoTaxi]

The theory behind them stands true. Pretty much, when a liquid is introduced with a circular motion it increases it's velocity. Easy way to see this is getting two bottles of water. Spin one around a few times and then pour them both upside down. The one with the circular motion will empty faster.

The only reason that swirled water leaves the bottle quicker than non-swirled, is because swirled water creates a hollow in the middle of the water flow that allows air to move up into the bottle better than the alternative ( gulping ) negating the surging that is generated, and allowing the water to leave unimpeded. So, it's not "really" the same thing as the intake on an internal combustion engine which has air flow THROUGH the plumbing ( or bottle as in the scenario ).

This is how the hiclone works, introduces a circular motion into the airflow into the engine, thus increasing its velocity. All well in theory so far, however here is where it starts to fall apart in real world situations.

The problem with this thoery is it only holds if you dont disrupt the flow of the liquid. We all have something in our cars that disrupts this flow, yep you guessed it, the throttle body. With constant adjustments of the throttle, the air is stalled and actually slows down.

Correct but if the hyclone was placed AFTER the throttle body ( or even better, an individual hyclone in the top of each manifold runner ), the swirl theory that they advertise "should" work.

With all that said, it would be fun to experiment but I'd be surprised if the gains were significant and there's no way I want a chopped up coke can in my intake system without some form of trap / filtration.

[R33 Ribby]

lol wow detailed explaination guys all. i was just wondering if they/or if anyone had one. good to know there shit thanks for the advice new question what about a leaf blower inbetween pod and AFM. cheap turbo!!!! lol

[PhilKenSebben]

I've been told they work wonders on my mates Patrol. But its still the slowest piece of shit on earth. If they worked that well you'd really think car manufacturers would use the theory, but they don't.

SIDE NOTE: A tuning workshop up here in Cairns was dyno tuning a Falcon with a hiclone. At full throttle, the item came loose and jammed itself into the throttle body, jamming it wide open. They had to turn of the car at full revs, which is bad, but infinitely better than having that happen on the road, yes?

[MrStabby]

Absolute snake oil bullshit. I'm really surprised that they dont get done for false advertising. The only result of fitting will be a slight reduction in power due to the introduction of a restriction in the intake path.

[bozodos]

I always wondered about these and those 'magical' fuel catalysts that you fit in your fuel line for "increased economy" lol.

[Dr Geckalo]

like the fuel atomiser i think it was called that brocky made for the commonwhores??

[PHATR32]

that wouldnt work either as the valves them selves would disrupt the swirl effect.

its a total load of bull shit, i reckon it would rob you of power as it would provide a small restriction!!

Correct but if the hyclone was placed AFTER the throttle body ( or even better, an individual hyclone in the top of each manifold runner ), the swirl theory that they advertise "should" work.

With all that said, it would be fun to experiment but I'd be surprised if the gains were significant and there's no way I want a chopped up coke can in my intake system without some form of trap / filtration.

[mid life crisis]

like the fuel atomiser i think it was called that brocky made for the commonwhores??

ah the old energy poleriser on the vk brockys wonder how much brock made too putting his name to that scam

[NA_R33]

If these things did work dont you think you would be seeing them from factory, where manufacturers spend millions if not billions on R n D, testing different ways to make there cars more powerful and more efficient?

[blockasR32]

so as anyone actually bought one and done back to back dyno runs with and with out the hyclone.

[jas/slo32]

yes had a bet with a mate who guaranteed me he could feel the difference.

so we bet the cost of the dyno run & i made $55 he lost an average of 8hp i believe ( was done when they were first released)

when i rang hiclone they said if you use 1 =10% power increase use 2 = 20% increase then i told him the dyno readings & he offered a full refund

all tests done on a bog stock commodore

[Mr.Massive]

end of discussion.. lol