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Mr Blue wrote:
Quote:Trailboss wrote:Quote:Mr Blue wrote:Quote:Ok this heat exchanger you’re speaking of TB, what do you know of water over oil cooling systems?BC
As is coolant used to engine cool oil Bruce?
TB
Sorry lads had to work a little today and haven’t had much time for my primary function…posting on here, Yep TB last night a mate (440kw XR6) was talking about a little insurance, and water cooled, oil heat exchanger, or a water cooled-oil cooler
Bruce we use oil coolers that are cooling system cooled for many reasons, one of those reasons is as you said Bruce low speed means no air flow which means no cooling (go figure :blink: ). The average hoon cruising around town doesnt realise that he isn’t maintaining enough speed for a constant air flow to maintain efficient temperature control, but it looks good :laugh: . Another reason is that engine oil operating temperature is achieved much quicker and we all know that means less wear as components run their correct tolerances remember this is combined with a oil thermostat to by pass the oil cooler when cold reducing parasitic loads and getting the oil up to temp faster. Engine oil temperature is in some ways more important the coolant temperature especially when diagnosing engine wear and failures.
With an coolant cooled cooler it is easier to maintain a temperature range as the coolant will only go as cool as the thermostat in the coolant system allows. Yes they are designed to turbulate the oil to prevent only cooling the oil against the core. For example say between 82 degrees (opening) and 92 degrees (fully open). When using an air cooled cooler for oil the air passing through if you are moving fast enough for it could in Australia vary from 0 degrees to 48 degrees.
All high horse power heavy duty autos in trucks are coolant cooled because of the heat they generate, air to air cooling cant meet the demandsAll the the higher performance higher load turbos we use are coolant cooled for a more constant temperature control and cooler turbo operating temperatures.
I am happy for Moto to criticise my punctuation, I know thats what happens when you arent perfect or know everything
, I did write it in a hurry stepping out the door maybe I should have slowed down :laugh: :laugh:Hope that helps answer your question Bruce, if ever you are in Sydney or Brisbane when I am I would love to show you through our facilities where you can see all this in practice not just read interpretations on the screen.
TB
AnonymousTrailboss wrote:
Quote:Bruce we use oil coolers that are cooling system cooled for many reasons, one of those reasons is as you said Bruce low speed means no air flow which means no cooling (go figure :blink: )
(If you are putting around town your engine isn’t as hot and still is is getting sufficient airflow, if it wasn’t your car would overheat).The average hoon cruising around town doesnt realise that he isn’t maintaining enough speed for a constant air flow to maintain efficient temperature control, but it looks good :laugh: (Why? Unless his car is boiling the fluid in the rad surely the cooling system is working fine? If you’re revving the freckle out of it stationary then it will start to overheat. Obviously when you start talking drag cars with serious power cued up waiting to run it’s a slightly different story) .
Another reason is that engine oil operating temperature is achieved much quicker and we all know that means less wear as components run their correct tolerances remember this is combined with a oil thermostat to by pass the oil cooler when cold reducing parasitic loads and getting the oil up to temp faster. Engine oil temperature is in some ways more important the coolant temperature especially when diagnosing engine wear and failures.
With an coolant cooled cooler it is easier to maintain a temperature range as the coolant will only go as cool as the thermostat in the coolant system allows (this is the same for any fluid that is temperature regulated).
Yes they are designed to turbulate the oil to prevent only cooling the oil against the core. For example say between 82 degrees (opening) and 92 degrees (fully open). When using an air cooled cooler for oil the air passing through if you are moving fast enough for it could in Australia vary from 0 degrees to 48 degrees.
All high horse power heavy duty autos in trucks are coolant cooled because of the heat they generate, air to air cooling cant meet the demands.All the the higher performance higher load turbos we use are coolant cooled for a more constant temperature control and cooler turbo operating temperatures.
I am happy for Moto to criticise my punctuation, I know thats what happens when you arent perfect or know everything
(SNAP!!) , I did write it in a hurry stepping out the door maybe I should have slowed down :laugh: :laugh:Hope that helps answer your question Bruce, if ever you are in Sydney or Brisbane when I am I would love to show you through our facilities where you can see all this in practice not just read interpretations on the screen.
TB
As another note, most street cars waiting to do a drag runs sit there with the bonnet popped and the engine off until they have to move with the specific intention of not putting too much heat in the engine/oil. Big power drag cars running nitromethane will get real hot just doing the burnout but they generate several thousand horsepower.
For a souped up street car a liquid cooling system for the engine oil seems a bit overkill. Bruce, does your mate drive his car there? If so does he change the engine oil for a higher temp grade before doing his runs?
Just my 2c though, each to their own. I’ve spent enough of my hard earned modding cars (a car really) buying all kinds of stuff
Exactly Moto
you should remember that if the cooling system coolant is being used to cool the gearbox or engine oil the cooling system of a street vehicle will have a fan or thermo fan to control its upper temperature thus helping maintain the oil temp Most high performance top end drag cars have the block sealed with coolant and the coolant is returned down the by-pass passage back to the pump to again go around the block. No radiator very limited run time till over heat as Moto said a whole different kettle of fish
TB
Anonymousare yous all kidding??
this thread was started about cooling systems for shitty red agricultural machinery with different sized symbols painted on them remember, and the wank factor involved therein :laugh: :laugh: :laugh: :laugh: :laugh:
it has evolved well though
Moto wrote:
Quote:Pray tell Bruce….what is this water to air intercooler you speak of? I take it you said water to air purposely and not air to water/coolant obviously being the norm.EDIT: Good thread this one!
Water to air intercoolers have been around for years, they are only really suitable for race car or dyno queens because they work best when an ice box is used to cool the water, the ice doesnt last long.
front pic of a twin turbo v8 commodore
this guy was summernats horsepower hero a few years back. Check the plumbing
This is the ice box in the boot
AnonymousTrailboss wrote:
Quote:Bruce, I have seen race trucks that have a setup to spray a fine mist of water over the front of the aftercooler mounted at the front of the truck of course. The reason behind it is the mist cools the air and the aftercooler core, colder air goes through the intercooler thus cooling the air in the intercooler cold air more oxygen etc etc more power.Couldn’t see it working at speed because of the obvious reasons, although at the start it would be cooled for maximum power at take off maybe
Yeah good thread Moto
TB
This has been around years though, I was under the impression Bruce had something new and innovative up his sleeve. Drongo’s with 1.2 turbo’d lumps of crap in the UK were using WI back in the late 80’s when I started getting into cars at the ripe of age of 11
The Subaru Impreza STi’s had it fitted as standard for a while. it was a little button on the dash you could press for a boost when hammering the car. It does work at speed too (maybe not drag car 200mph+ stuff but whatever an STi Impreza can throw at it
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