2 core versus 3 core radiators

[Bloodyaussie]

Sort of agree with Roofy why are you having overheating problems , fresh motor new radiator.
I can see benefits if doing some comp style driving but you dont get that in the high country or Tallarook.
But temps will climb on steep long drives especially in low low
If you're doing it to be more efficient, so temps are a bit more consistant then yeah Its not that $$$$
for a decent oil cooler. TBO this should of been the first thing to do on my other 4x4 might of saved a bit of heart break

Well I am confused??????

wheres my hammer.

[Bigcol]

dont be confused Bloodyaussie,
I think there are several thoughts going around about these, although not quite on the same page, they are valid points to consider

the oil cooler is just that
an extra "radiator" to help dissipate the heat generated by the engine for the oil..............

pretty much the same as years ago, you used to fit an "aftermarket" transmission cooler to help the Auto box dissipate the heat generated in there
pretty much mainly for towing, as the Auto does more work.

now the ONLY problems I can see (with my limited future vision) is where do you mount the damn thing

common place to mount would be behind the grill - so its in front of the current air con and engine Rads......
- this would slow the air down more in trying to cool your water - dont think its a good idea myself

mount it on top of the motor (like an intercooler) have a scoop - only spot is on the passenger side
- right above your Turbo (which is generating heaps of heat - heat rises - oil cooler useless)

under the roo bar at the front, under your winch
- maybe stake it or get crap in it - or block the bottom of the engine / aircon rads..........

mount it on top of your roof rack
- looks like crap and everyone will think you secretly want a comp truck

inside one of the guards - (like the Mini Radiator)
- mmmmm room V's actual efficiency

throw this one in there as well......

in front of the Passenger side windscreen - dont think the Boss, or the Police would appreciate that one.....

was speaking to a couple of mates who plays with Turbos etc... and have been playing with this for awhile
1. the cooling system on the 4.2 is crap
2. the oil cooler at best will only lower the engine temps by about 1* - depending on where it is situated
3. Factory or Nissan Water pump (after market impellers are smaller than OEM
4. factory or Nissan Viscus Fan hub - aftermarket dont last
5. Jury is still out on the Thermostat Nissan V's aftermarket

have been told that testing - temp probe at water into Rad and water out of Rad - only 5* to 6* difference
thats with temp probe at Thermostat and temp probe (drilled and tapped) into near water pump showing close to 100*

hope this helps you mate............

[Alitis007]

go get a Temp gun, go check the oil temp in your car, and the water temp after its been parked all night
then run the car, say 2 or 3 hours, then check the temps again.........
"will you look at that.. BOTH are now hot"

if you have a radiator to help disapate the water temp, pray tell us why a radiator for the oil will not work.........

well, if we are not wrong - but obviously not correct, according to you

perhaps you would care to enlighten us on how and where we are NOT right?

you obviously know the answer
maybe spill the bean for us that are not wrong............ and then we will know the secret as well

Mate fyi I didn't ask the question for me I asked it for everyone elses knowledge plus to let some one else answer. Anyway you'd have to be an idiot to say an oil cooler wont work, matter of fact I have one on my toy and lucky me its factory fitted. And as you can read below the answer was to do with the oil cooler which newby started heading in the right direction but didn't get there.

So lets say our heads are out of our arses and we're on the same wavelength and we understand heat is energy and energy is never lost but transferred, the oil increases in temp form combustion energy lost (and I say lost loosly becoause it hasn't been lost but transfered into heat into the metal components) and areas that have friction. As it heats up it thins out untill a certain temp where it starts to break down which is where the heat exchanger in the oil cooler comes into play and transfers the heat from the oil to the coolant which should be cooler if all the components are working efficiently. The heat exchanger in the oil cooler works well in normal conditions and probably slightly modified motors but lets say you add another heat source like for eg a turbo which is oil cooled only (BA's turbo) now the factory oil cooler will be at its limits and won't work efficiently and the oil starts to break down faster than normal, I can't see how the water temp will suffer if the radiator is working correctly or how the temp gauge should fluctuate because the sender is in another area but anyway your external oil cooler will come into play and help the heat exchanger in the factory oil cooler cool the engine oil. If it work too well the heat feom the coolant will try to reheat the engine oil and the factory cooler will work in reverse lol

The only thing I can't say if you will have a problem with or not is if it will put strain on the oil pump or if you will have oil starvation anywhere but it should in theory do more good then bad.


Like I said you where not wrong but just didn't answer my question

As far as I can see any affect is going to come from the oil cooler, it is the only part where coolant and oil need each other.
If the oil cooler is gunked up, which many are it isnt going to work effectivly, so less oil cooling, more oil temp. Oil coolers inability to keep up so the coolant gets hotter and so on.

You should fit an oil cooler simply to cool the oil. It is not a solve for cooling system issues. But installing one is beneficial to both the oil and coolant systems.

In doing so this takes some load off the cooling system. This also wont make it run cooler but will help to stabilise temps. By stabilised I mean the gauge shouldn't move much from normal operating temp.

[Bloodyaussie]

Grrr !!!!

My comment about being confused was directed at Johns comment about not needing a cooler but in the same breath saying it is a good idea...

As for my understanding of the whole idea of an oil cooler I have a very good understanding of it all but sometimes it is good to not be a know it all and encourage some healthy discussion.

My back ground is bikes and oil coolers were common place for many years... I just liked the idea of people sharing there ideas without being put down by others or made to feel stupid or belittled.

Many people start to tune out once people start to put other peoples ideas down and turns into a slinging match.... I'm going back outside to continue cleaning... fraking bloody gribble blah!!!!!!

[nissannewby]

Well I am confused??????

wheres my hammer.

Fit an oil cooler. Comp rig, daily driver, zd30, td42 or rice toy it is beneficial and certainly worth just for engine life.

How many more pages is it gonna take to convince you??

[rusty_nail]

Fit an oil cooler. Comp rig, daily driver, zd30, td42 or rice toy it is beneficial and certainly worth just for engine life.

How many more pages is it gonna take to convince you??

i think hes convinced, there are others that arent is what hes saying =D

[Alitis007]

pretty much the same as years ago, you used to fit an "aftermarket" transmission cooler to help the Auto box dissipate the heat generated in there
pretty much mainly for towing, as the Auto does more work.

Heat in the transmission oil is generated by the torque converter while you're accelerating. .. just saying

[Bigcol]

pretty much the same as years ago, you used to fit an "aftermarket" transmission cooler to help the Auto box dissipate the heat generated in there
pretty much mainly for towing, as the Auto does more work.

Heat in the transmission oil is generated by the torque converter while you're accelerating. .. just saying

yes we realise this -I wasn't talking about "creating" the heat in the Auto Transmission - but dissipating the said heat in the Auto Transmission


however, after re-reading this whole thread, I have realised that we were talking about 2 separate issues that were in this same tread.

your question

How does oil temperature affect water temp??

was best answered in this post #71

The oil filter housing has coolant running through and sees this before the returning back down the head so the coolant is already warm.

however, I am talking about post #61 and #67

Just reading a blokes write up on fitting an oil cooler with a thermostat as he lives in the desert and he say's it has done wonders to his temp levels?

Running a cooler via a oil filter adapter plate that I think has a valve that opens depending on heat.. all the cheap ones on ebay do not have this and oil runs through them all the time.
There are heaps of kits you can buy.... this is a larger one and probably overkill. http://www.ebay.com.au/itm/AN10-Univ...item4d238dc505
He was claiming that living in the hot conditions of the top end he saw temps of 120 regularly but now it sits at 95... I have seen others mention this and I did see one car at the wreckers with this set up (no it was not a transmission cooler)...
Not sure if there are issues with oil working at correct temps or what?

about fitting an aftermarket external additional cooling radiator for the oil.

your original question

How does oil temperature affect water temp??

was in fact answered by Nissannewby - the coolant runs through the oil filter housing - thus taking heat from the oil, transferring it to the coolant, and then on through the rest of the cooling system ie: thermostat, water pump and radiator.

[Bigcol]

the answer can also be found in "Treatise on Thermodynamics" by Dr Max Planck
https://www3.nd.edu/~powers/ame.20231/planckdover.pdf

TREATISE ON THERMODYNAMICS.
PART I.
FUNDAMENTAL FACTS AND DEFINITIONS.
CHAPTER 1
Paragraph 2

If two bodies, one of which feels warmer than the other, be brought together
(for example, a piece of heated metal and cold water), it is invariably found that
The hotter body is cooled, and the colder one is heated up to a certain point, and then all change ceases.
The two bodies are then said to be in thermal equilibrium.
Experience shows that such a state of equilibrium finally sets in, not only when
two, but also when any number of differently heated bodies are brought into
mutual contact.

[the evil twin]

Two differently heated bodies brought into mutual contact usually results in a slap across the chops (spousal) or knee to the nuts (alcohol).
Anal cooling is achieved when your bum heats up so much after you eat Chillies, the thought of a crap makes you cry thus achieveing Rectal equilibrium.
2 Core Radiators rule off road (gotta stay on topic).
If oil is cooled by the exchange of energy heating air, oil coolers must therefore contribute to global warming and should be avoided.
Prados suck.
TD42's overheat, ZD30's explode, RD28's can't pull the skin off custard, Petrol engines are for shopping trolleys.
6 out of 7 facts on the Internet aren't.

Sorry Col and others, couldn't resist...