Yet another "My XJ Runs HOT" Post

[bruggz351]

... is this our indentured servant?

[Richard buttocks]

Originally Posted by BillabongXJ

the day when an XJ owner complains about their engine being too "cool" lol



[

mine hasn't ran hot for nearly 12 months

[Redemptioner]

Originally Posted by BillabongXJ

Divisible by 2.5 gives you the same difference.

God I hope you don't work in a job that requires maths, let me help you out there (I don't need a calculator to do these basic sums but you better use one when you check them);

650/2.5= 260
650*2.5= 1625
1900/2.5= 760
1900*2.5= 4750
1900/650= 2.92
1500/2.5= 600
1500*2.5= 3750
1500/650=2.3
3750/2.5= 1500
3750*2.5= 9375
3750/1900= 1.97

so what exactly is the same between them (other than nothing) that you are trying to point out......

oh and what are you smoking?

Originally Posted by BillabongXJ

how is this cheaper than a $45 16" fan. who are your suppliers? and are you friendly with the lazercutters to make the shroud? are you now ok with hanging 3 thermo fans through your radiator matrix with nylon cord? How do you get the rocks out of those? do you have to fit them to the radiator before you put it in? wow where can i buy these? how much!

Well 2 decent 10" electric fans cost less than your crappy 16" fan, as for the rest it is clearly not worth replying as you simply don't seem to be able to read, do maths or understand something very basic......there are others here I have helped but some are clearly beyond it.

Re your unusual concern that half speed electric thermo fans still flow too much air in traffic. That will be the day when an XJ owner complains about their engine being too "cool" lol

Might want to "try" reading through again, hence the "what are you on about"........

There seems to be something not lining up with the bottom radiator lugs.

Wouldnt be an issue for you running tripple fan setup, going by your earlier posts you would argue to throw away a couple of purpose made plastic shrouds and make your own out of a piece of tin and thread it through the radiator core with some nylon cord.

Again I point out that I think you need to spend more time reading and less time commenting...... Oh and just because something was "purpose built" does not mean it is any good .

Try this one for space between engine and fan that's with a slim line 6.25cm fan

That's what you get for buying a crappy fan that only produces 1900cfm for 220W, (crap motor, crap output, crap design in general) and is hardly an issue for a smaller fan that is also thinner and can be placed off centre to the water pump pulley giving even more room to play with....

going down the highway the 16" fan would be less restrictive to natural airflow than the 3 smaller fans so the fan will have to come on less often.

Now you are just making sh$t up for the sake of it.......lol what are you basing this off, your "educated" guess???

Originally Posted by junglejuice

I read it, fact remains that on low speed mine cools effectively in heavy traffic, once moving along at a 40-50kmh I can turn the fans off with no change in operating temp, if I use high speed (selectable manually) it gives me significantly more cooling capacity due to a large increase in airflow.
After all low speed (traffic, offroad crawling etc) is where you NEED effective cooling, once driving the fans do nothing......

Ok you read it, but you clearly did not understand it or you would not be making the comment, "fact". There has been at no stage a comment or argument that there is too much cooling from the thermal fan, in fact the point was that the cooling is way better at idle than the clutch fan is and this is what is normally attributed to the new electric fan (setup really poorly) as being way better at cooling as they have not........in fact go back a page or so and read the comment again as you clearly need the practice in reading as well as understanding.

Originally Posted by junglejuice

I too would love know where these magical (cheap) fans are being sourced from? My 16" fan was from ebay, cost around $50 and fitted pretty well straight up to the stock shroud. mp custo, shrouds required, yet you'd have us believe that a full custom shroud and 2 new fans is "around the same money", I call BS.
Plus I still fail to see why you're advocating ditching the stock 12" fan with full shroud to go back to a 10" fan, makes zero sense to me.....

Clearly making sense is not a priority for you, I have helped plenty of people since making the initial comment and they have all bothered to do some research first, if you are not very good at using google then at this stage I am not interested in helping. If you are happy with your poor 16" fan setup then I am happy, there are plenty of people out there looking to do things better and it is not hard to add electric fans to a XJ radiator better than the way you have gone about it. Like I said originally, Kudos for having a go but hardly what I would recommend someone be doing, it is rather entertaining though the fact you continue to push for a unmistakeably worse way of going about it.

Also I fail to see how a flat sheet run directly behind the radiator with a hole cut into it can be considered a "good" ducted shroud with large areas effectively blocked off from airflow.....

Have a closer look and you might work it out, if not no loss to me

[Roler]

Originally Posted by BillabongXJ

... That will be the day when an XJ owner complains about their engine being too "cool" lol...

Popcorn, anyone?

Well, well,...I thought to provide a light interlude here, so everyone can get a refreshing drink and we all sit down for the next few pages

Running "too cool" ; thats what mine tends to do at times after having had the radiator cleaned a few months ago haha. Temp sometimes down to around 89C ( but nicely settles again around 93C (LiveData scanner verified, yes). Not bad, considered my thermostat is rated for 195F... nil "fabs, mods vents or hacks" have been done.
I always enjoy these threads and still wonder what all these mods are being done for...other then" because I can"...if you need those mods to keep your temps under control, there is something basically wrong with your cooling system and IMHO you need to look into that. But I'm not gonna ruin this thread by proclaiming that here, not now, its far too entertaining...

Oh and did I already mention mine is a normal stock setup (brass copper rad, to start another war with all components of the cooling system just being up to scratch and replaced on time where they should have been? The only thing I replaced with "maybe" an upgrade factor to it, is the aux fan with a *cough* similar sized fan , which is "only" rated at a measly 1250 CFM at 9 A....

All good, everybody had a chance to get refreshments, let us continue about things that deal with " size matters"...or didn't it? ********, now have I read 15 pages back...

[ajs18s]

http://www.are.com.au/feat/techt/research&dev.htm


Even more input, makes for very interesting reading.

[BillabongXJ]

Originally Posted by Redemptioner

God I hope you don't work in a job that requires maths, let me help you out there (I don't need a calculator to do these basic sums but you better use one when you check them);

650/2.5= 260
650*2.5= 1625
1900/2.5= 760
1900*2.5= 4750
1900/650= 2.92
1500/2.5= 600
1500*2.5= 3750
1500/650=2.3
3750/2.5= 1500
3750*2.5= 9375
3750/1900= 1.97

so what exactly is the same between them (other than nothing) that you are trying to point out......

One thing worth pointing out, the figures your quoting are the m3h measurements not the CFM. Which is why they appear to be higher. They're just totally different measurements.
You will not find such drastic differences with same voltage and similar dimension fans.

Well 2 decent 10" electric fans cost less than your crappy 16" fan, as for the rest it is clearly not worth replying as you simply don't seem to be able to read, do maths or understand something very basic......there are others here I have helped but some are clearly beyond it.

Anyone in the know will say you need around 2000 CFM or more in a 16inch configuration to replace a clutch fan in a XJ Jeep.
Im not saying you can get similar results with 3 small fans its just not the easiest way or cheapest.

Compared to the following
Starting with a very effective 12" fan, broad blades, excellent flow, made to fit.
Purpose made shroud which again is made to fit with the radiator lugs and can be removed with 2 bolts to get it out of the way to change a pulley or radiator hose. Very easy and cheaply and quickly modified with a 16" fan there's more than one but the $50 works. Occasionally people re rout the belt and fit bigger fans but the one thing in common is they go for a factory moulded shroud weather its off the jeep or its off a ford its hard to beat a purpose made shroud.

certainly a setup like this cant be challenged by a flat piece of tin with a couple of 10" fans. . Even you know that fans pressed hard against the radiator dont work as effectively as they're trying to pull air straight from the matrix it dosent work so well..

Might want to "try" reading through again, hence the "what are you on about"........

Again I point out that I think you need to spend more time reading and less time commenting...... Oh and just because something was "purpose built" does not mean it is any good .

Take a look at a professional thermo fan set up, they use a large plastic moulded shroud with smooth ducting. Much like the stock jeep shrouds.

Compare that with your piece of tin with some holes cut in it. Thats effectively blocking any area in the core where the fans aren't situated. I understand the air can move around that tin but its making 2 90 degree hard turns.

That's what you get for buying a crappy fan that only produces 1900cfm for 220W, (crap motor, crap output, crap design in general) and is hardly an issue for a smaller fan that is also thinner and can be placed off centre to the water pump pulley giving even more room to play with....

Ive looked at a couple of reputable catalogues. Jay Air automotive climate control catalogue. but come to the conclusion your mistakenly quoting m3h as CFM figures.

Not too impressed by the reviews on this site for the 10 inch fans
http://www.summitracing.com/int/part...9120/overview/

"Does not pull any where near 2300 cfm
Summit RacingSummit Racing Verified Purchase

Put 3 of these on my 99 jeep cherokee would not cool as well as the mechanical fan. Probably more suited for 4 cyl small car applications."

Id be cautious of retailers like this, you will find them selling a very similar looking low profile fan that you can buy for half the price elsewhere. Even claming more than double the flow from a very similar looking fan.

http://www.ebay.com.au/itm/10-12V-Sl...IAAOSw2XFUZdcZ

looks exactly like

http://www.summitracing.com/int/part...9120/overview/

one claiming 2350cfm one claming a more realistic 800.

Now you are just making sh$t up for the sake of it.......lol what are you basing this off, your "educated" guess???

Its very straight forward. Like I said the tin shroud is no match for the factory shroud due to the obstruction of core surface.

[djh13]

You guys are really into radiators hey.