Bonnet Protector Airflow

[threedogs]

Have a search , you may find the fan only benefits sand driving at higher speeds the fan blades may block air flow.
Be it from fitting the fan to the top or below the IC, I would not fit one too many con's as to the pro's

[jack180]

Have a search , you may find the fan only benefits sand driving at higher speeds the fan blades may block air flow.
Be it from fitting the fan to the top or below the IC, I would not fit one too many con's as to the pro's

Did that, but still not finding a consensus

Fitted the bonnet protector today v- and did the ribbon test again
Hardly any difference to my first test - which was a suprise, but a good result i thought.
OK airflow into the intercooler below 70kmh, but at 100 i reckon its not getting much

Which for me, kinda goes against the thinking a fan us only useful for sand and slow work.

My take is that at slow speeds its getting airflow, but at 100k is not.

So, the question for me is will the fan help or hinder at 100ks.

How can i test this? Gonna have to put my thinking cap on and use my brain - which is likely to hurt lol

Cheers,
Jack

[FNQGU]

Jump onto the ARE website, if you haven't already, and read up on Richard's research. He has done a stack of testing and has shared a lot of his info. I found it quite informative, and he is considered one of the industry experts. He is a busy guy, but will also generally answer emails when he has the time, and I've had a couple of chats with him on the phone too.

[threedogs]

Did that, but still not finding a consensus

Fitted the bonnet protector today v- and did the ribbon test again
Hardly any difference to my first test - which was a suprise, but a good result i thought.
OK airflow into the intercooler below 70kmh, but at 100 i reckon its not getting much

Which for me, kinda goes against the thinking a fan us only useful for sand and slow work.

My take is that at slow speeds its getting airflow, but at 100k is not.

So, the question for me is will the fan help or hinder at 100ks.

How can i test this? Gonna have to put my thinking cap on and use my brain - which is likely to hurt lol

Cheers,
Jack

your EGTs should show any results with or without
a fan at 100 kph, a 7"-9" fan wont break the bank either

[Col.T]

G'day FNQGU,
coupla questions mate.
1) just how quick is your GU?
2) I can't find a ARE site. You can't mean ARB 'cause E and B aren't even close on the keyboard.
Can you give a full web address please?
Regards,
Col.

[jack180]

http://www.are.com.au/Inter/topMountIntercoolers.htm

[threedogs]

I have an A.R.E scoop with the louvers and a Tigged OE IC, but I dont feel Im
acheiving 71% efficiency, or for that how it would translate in real world figures.
I have also filled in the gap between the bullbar and the bonnet with a piece of perspex

[the evil twin]

Hiya TD... I get what you are saying.

I have no doubt at all that the 71% quoted by the manuf is correct.
I have no doubt that the product is of excellent quality
Neither do I have any doubt that the average punter in his average truck on an average day would, on average, notice bugger all difference
Or at the other end of the scale, that a Finke Desert Racer gets an extra 15 kW and 10 KPH or whatever and the rest lie in between.

E.G. the 3.0 Litre Leaking Factory I/C debate.
I had a leaky factory cooler (I think they all do from day 1 actually and just get worse with age)
IMHO it was an average one IE I saw some significantly worse but mine was sama sama most others

Just before my old truck was about to go out of warranty at 6YO I had it replaced.
Change in boost observed - 0 (PSIA on Scangauge)
Change in EGT - I reckon it dropped maybe 10 possibly 20 degrees at most (calibrated VDO EGT gauge) but an ARE would get more
Change in Fuel consumption - none that could be quantified IE same before and after (scan gauge and also GPS distance plus calibrated Odometer check against fuel used)

Reason why nothing noticeably changed on my truck IMHO is that the boost pressure is set by the ECU (or Dawes if Nad'd) after the Intercooler.
All that happens is the VNT angle increases for a bit more flow to get the same pressure which compensates for leaks pre-boost sensor.
That will happen up until the VNT maxs' out which is quite a large leak.

Yes, if the charge air is cooler at a given pressure it is more dense so has more Oxygen by volume but unless you punch in more fuel then so what?
Remembering that the ECU senses;
Inlet air temp and flow at the MAF prior to Turbo and I/C,
Boost at the I/C plenum afterwards, and,
doesn't know the EGT, then
the ECU has no way of knowing that the engine now has a kickarse charge air system.

Bottom line, IMHO, is to get the biggest or even a noticeable bang (other than a drop in EGT) out of the excellent quality aftermarket gear around then a punter needs to remap the ECU or crank up the Chip.
That is why the CRD's love cold weather and hate hot... the MAF so therefore the ECU knows there is more oxygen available.

[threedogs]

All noted I did however notice when I changed fuel from Caltex to BP.
For a joke Id say about 10% increase as in more zippier, now if I got
70% Id be doing a 14 sec Qrt mile or 400mtrs for the youngin's,
and we all know that wont be happening with a ZD30 ,,,,,,lol

[the evil twin]

You can do a sub 15 400 metres in a ZD... the cliff just needs to be at least 410 metres high...

Flame suit on and up, up and away....