Hiclones on Land Rover TD 5

Submitted: Wednesday, Nov 05, 2003 at 12:55
ThreadID: 8322 Views:2753 Replies:10 FollowUps:12
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Just wondering if anybody has any experience with Hiclones on a 2000 TD5 Discovery. I am getting 100 k's out of 10 litres doing roughly 2 thirds highway and 1 third city driving per tank which I know is very good but if I can get better I would like to!
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Reply By: Member - Alan- Wednesday, Nov 05, 2003 at 13:24

Wednesday, Nov 05, 2003 at 13:24
I think the only way you'll get any better than that Jack is to push it!
I've got a 2003 Defender Td5 and get approx. the same as you and am well satisfied.
From what I've read these things are more of a gimmick than anything else, the sort of thing Range Rover owners like my son (and big petrol Nissan/Toyota owners) buy in desperation!
AnswerID: 36288

Reply By: Member - Ross - Wednesday, Nov 05, 2003 at 13:43

Wednesday, Nov 05, 2003 at 13:43
Alan & Jack

I'm almost getting that from mine, but not quite. Only done 8000 Km so expect better when it loosens up some more.

How many K's for you blokes before you felt it was loose .... 10 - 12 K Km ??

CheersRosco
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Follow Up By: Member - Alan- Wednesday, Nov 05, 2003 at 15:13

Wednesday, Nov 05, 2003 at 15:13
I've done just over 9000 now Rosco and it's beginning to feel looser, especially the gearbox.
I'm going to get it serviced at 10000 klms. as I don't feel right leaving it for 20000 before getting it done.
Most of my journeys are short, worst luck, so I expect my trip consumption when I can get away from work for long enough, to be better.
Even the cook enjoys the view and the ride, as long as I'm not too adventurous, so I'm quite pleased overall.
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Follow Up By: jack - Thursday, Nov 06, 2003 at 08:04

Thursday, Nov 06, 2003 at 08:04
Rosco, My Disco has done 145000 and is a 2000 model, It has had a pretty easy life though, I bought it a month ago and love it. Hopefully you don't have to wait that long before your consumption drops.
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Reply By: Aston - Wednesday, Nov 05, 2003 at 15:03

Wednesday, Nov 05, 2003 at 15:03
Jack,

As a manufacturer of carburettor parts I doubt the effectiveness of some of these gadgets as I have seen them all come and go.

I thought that you would be interested in that I just filled the Td5 up at the local ampol and put in 76.92litres for 697.8kms mixed H'way running and a small amount around town 11litres/100kms (25.6mpg in the old language).

I also give it a dose of "chemtech" diesel power every 3rd tank.

Rosco try and keep the engine revs under 2,700 and let it work and see if the economy improves.

Cheers Aston
AnswerID: 36298

Follow Up By: landie - Wednesday, Nov 05, 2003 at 15:49

Wednesday, Nov 05, 2003 at 15:49
My average consumption for the TD5 Defender is 10.5 per 100 klms (done 70,000 klms). This includes plenty of outback travel including Simpson Desert crossings etc. I get around 11.5/12 with a Kimberley Kamper in tow.

Cheers
Landie
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Reply By: Hughesy - Wednesday, Nov 05, 2003 at 17:45

Wednesday, Nov 05, 2003 at 17:45
Jack I've tried the Hiclones in my cruiser diesel and found it did SFA (still left them in though). When you think about it - for a diesel, the air is drawn into the cylinder (past the hiclones) and then compressed anything up to 22:1 before the diesel is injected. Now I'm pretty sure the bit of swirl that the hiclones put into the air before it enters the cylinder is all but gone by the time the diesel is injected at the top of the compression stroke. Therefore doing SFA for the motor - if anything it gives a higher resistance for the intake air.....???? I could see it possibly working in a carbouretted petrol because the fuel is mixed with the air before being compressed.

But some people swear by them so who knows....

I'd be happy with 10l/100km. Happy motoring.

Cheers,
Hughesy
AnswerID: 36314

Follow Up By: Member - John - Wednesday, Nov 05, 2003 at 18:48

Wednesday, Nov 05, 2003 at 18:48
Hughesy, If they did SFA, why not get your money back? I put two into a GU 4.2TD, ran it on the dyno before and after, no difference in kw or nm, ran for a month, worse fuel economy, so had them removed, money glady refunded. Did the same with a GQ 2.8Td, extra 2 kw, no increase in nm, trialled for a month, no better fuel economy, had them removed and money refunded. Hope this helps.
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Follow Up By: Hughesy - Thursday, Nov 06, 2003 at 06:07

Thursday, Nov 06, 2003 at 06:07
John the reason I didn't send them back was because they say that you've got to do a couple hundred K's before you'll see any benefit. Well a drive a work cruiser everyday and for me to drive the couple hundred days took well over a month (small town) and hence missed the 30 day money back. I had heard of these Hiclones for years but had always been sceptical, however after reading a test on them in a 4by mag (80 series cruiser but same engine) with a huge 20% saving in fuel I thought well they must work - Arrrhhh as they say don't believe everything you read...

By they way everyone I have two Hiclones for a Toyota 1HZ motor for sale....work great........NOT!!!!

Cheers,
Hughesy
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Reply By: Andrew - Wednesday, Nov 05, 2003 at 18:10

Wednesday, Nov 05, 2003 at 18:10
The principle behind these things ( and the squillion widgets that have gone before) is that they increase the turbulence in the inlet tract.

The simplest one I have seen was a piece of flywire mounted underneath the carburettor, but I digresse.

Increasing the turbulence may (but not necesarily) improve fuel atomisation so that the air/petrol mix is more consistent which can improve torque and reduce petrol consumption. Great idea if it works for low to medium throttle openings.

However as it is a restriction most devices will hurt maximum power because they hurt the airflow at higher revs.

Now all this assumes that your basic carburettor and manifold setup is not good at mixing fuel and air and keeping it mixed. Hard to see how this applies to modern engine designs.

Should make damn all difference to fuel injected engines and may actually hurt the effectiveness of the injectors if you stuff up the air flow past them.

Creating turbulence in diesel engines is pretty pointless as the fuel is injected inside the cylinders, not in the manifold where the device is fitted. Probably still acts as a restrictor though.

regards
AnswerID: 36317

Reply By: Member - Bob - Wednesday, Nov 05, 2003 at 20:24

Wednesday, Nov 05, 2003 at 20:24
Jack, there are various chips available for the TD5 which can boost power, torque and economy. The cheapest is about $850 from Bruce Davis. I think it lifts power from 101 kW to about 136, and torque goes up similarly. There are extreme chips which will lift power to 200 kW (hehehehe) but that would be silly wouldn't it? If you are going to fiddle and spend money that's where I'd start.Bob
AnswerID: 36333

Follow Up By: nugget - Wednesday, Nov 05, 2003 at 21:01

Wednesday, Nov 05, 2003 at 21:01
Bob
A friend of mine fitted one of these chips (136KW) to his TD5 Disco. The biggest improvement is in throttle response especially from a standing start. Fuel consumption he tells me isn't any better infact it uses slightly more fuel but not by much. Around 50Km less per tank.
Cheers.
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Follow Up By: TonyY - Wednesday, Nov 05, 2003 at 21:25

Wednesday, Nov 05, 2003 at 21:25
I am planning to chip the Defender fairly soon but not expecting better economy because the temptation to use the extra go will be too much!

My best economy was on the first tank, 900km, while I was running in, now averaging 10.5l/100km, 12l/100km with the camper trailer, but I have a heavy right foot. ;)
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Follow Up By: landie - Wednesday, Nov 05, 2003 at 22:47

Wednesday, Nov 05, 2003 at 22:47
TonyY / Bob

I have the Bruce Davis chip, and I have found it excellent, particularly with the camper trailer in tow. I expect to see long term fuel average creep a touch higher.

Cheers
Landie
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Reply By: David N. - Wednesday, Nov 05, 2003 at 23:15

Wednesday, Nov 05, 2003 at 23:15
I reckon the Hicyclones work very well.
Very well at lightening your wallet!!!
Do you seriously think the manufacturers would ignore them if they worked.... fuel economy is a big selling point.
Save your dough and if you want to improve your economy
1. Drive (and accelerate) slower.
2. Raise your tyre pressure.
3. Remove excess weight from your vehicle
4. Remove roof racks etc when not absolutely needed.

All of the above cost zip and DO save fuel!
AnswerID: 36349

Follow Up By: mudgutz - Thursday, Nov 06, 2003 at 00:17

Thursday, Nov 06, 2003 at 00:17
too right dave .......i reckon if anything by adding another device in the air intake line you would restrict just that little bit.........good at emptying your pocket is right..........your right when you say manufacturers.etc.etc
i dont see toyota or nissan knocking down hiclones door
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Reply By: ross - Thursday, Nov 06, 2003 at 00:46

Thursday, Nov 06, 2003 at 00:46
My FJ73 had a hiclone fitted when I bought it.Just to confirm what I always thought they are nothing but a con.The advertising blurb is just mumbo jumbo and has no practical basis what so ever.They have been tested by the EPA and found not to improve economy/efficiency at all.I personally would not deal with any mechanical workshop that pushes these onto their customers.
AnswerID: 36360

Follow Up By: jack - Thursday, Nov 06, 2003 at 08:02

Thursday, Nov 06, 2003 at 08:02
Thanks guys, I figured I would be wasting money but thought I would check anyway, maybe I'll save up and get that 200kw chip and have some fun.
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Reply By: Member - Bradley- Thursday, Nov 06, 2003 at 11:38

Thursday, Nov 06, 2003 at 11:38
My jackaroo had one of these fitted but i have since changed the induction system and gave it the arse, they may work if your induction system and filter are standard. If the disco has a round inlet pipe about 4 inch diameter - then you can have mine for nix, and buy us a beer if it works LOL.... cost me nothin, willing to pass it forward .. Cheers Brad. Life is short- but there's always time for a yarda.
AnswerID: 36385

Follow Up By: jack - Thursday, Nov 06, 2003 at 12:13

Thursday, Nov 06, 2003 at 12:13
Thanks for the offer Bradley but I think from your response and all the others I should just leave well enough alone and be happy with the good consumption rate I have already.
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Follow Up By: Member - Bradley- Thursday, Nov 06, 2003 at 12:18

Thursday, Nov 06, 2003 at 12:18
No worries jack, Anyone else want it ??? mmm nice and shiny, might make a good ashtray for any smokers :-) Life is short- but there's always time for a yarda.
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Reply By: ToyMotor - Friday, Nov 07, 2003 at 22:31

Friday, Nov 07, 2003 at 22:31
I have these installed, they are guaranteed to repel lions and crocodiles, and in over 300,000 km of outback motoring, I've NEVER hit either one! They work really well. (I'll sell you a set for $200.00)

Cheers

ps Bugger! Sorry, wrong thread.....
AnswerID: 36578

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