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Cooling System flow direction
https://www.ausmini.com/forums/viewtopic.php?f=2&t=80830		 Page 1 of 1
Author:  FNQ [ Sun Mar 24, 2013 4:49 pm ]
Post subject:  Cooling System flow direction
Hi

Just wanting confirmation or clarificaction on cooling system workings please.

i picked up a diagram off web to assist.
Image

(thanks to http://www.2carpros.com/articles/how-an ... stem-works)
Question
1.on a mini system the fan blows instead of sucks into the wing area - where low pressure area assists take hot air away?

2. Heater matrix comes off the number 4 cylinder end. Ideally if no cooling matrix is installed (ie no heater) then this hose should return to the upper radiator to allow cooling before re-entering the head? Instead of just back to lower hose.

3. Blanking plug instead of thermostat. Is its purpose to slow down water to keep a similar operating environment (ie not create too much flow?)
I have heard it also stops water short circuiting the system, creating potential for cooler or hotter spots. Please can someone give some details
(i don't intend to run without a thermostat just curious)

Cheers Darryl
Author:  mini_mad_matt [ Sun Mar 24, 2013 5:54 pm ]
Post subject: 
1. Yes the fan is designed to push air through the radiator into the wheel arch as that is the direction of air flow from the grill.

2. correct

3. The thermostat regulates the flow through the engine, so if you remove it the water will circulate too quickly. The blanking plate is to retard the flow when not using a thermostat.


So correct on all accounts
Author:  FNQ [ Sun Mar 24, 2013 10:07 pm ]
Post subject: 
thank you
Author:  Minute [ Sun Mar 24, 2013 11:16 pm ]
Post subject: 
id be interested to see a photo of someone running number 2 in their mini
Author:  mini_mad_matt [ Sun Mar 24, 2013 11:45 pm ]
Post subject: 
No photos at the moment but i have an alloy radiator i had a 1/2" pipe welded onto the top tank and then ran a drill down inside the pipe to go into the tank. Then just a bit of heater hose going to the heater pipe fitting on the cylinder head.

You can do it with a standard radiator too obviously.
Author:  PetenSoaf [ Mon Mar 25, 2013 6:54 pm ]
Post subject: 
Minute wrote:
id be interested to see a photo of someone running number 2 in their mini


Crappy photo but it wasn't originally taken to show the extra heater core. . .
You can just see the heater core below the alternator (silver with a cable tie around it). At the very bottom of the pic you can just see the hose from the heater takeoff that goes to the heater core. The hose from the heater core back to the top hose is pretty obvious.
Makes more sense to me to have the hot water from the heater core going back into the top hose (and being cooled by the main radiator) rather than the bottom one.

Image
Author:  Minute [ Tue Mar 26, 2013 5:59 pm ]
Post subject: 
makes more sense to me too pete but i cannot ever remember seeing an off the shelf top hose that has an extra take off
Author:  PetenSoaf [ Tue Mar 26, 2013 6:50 pm ]
Post subject: 
Just cut the 'relevant' chunk out of a bottom hose that has the heater takeoff. Easy. Fits surprisingly well.
Author:  Minute [ Tue Mar 26, 2013 6:53 pm ]
Post subject: 
cheater lol.... maybe there is a market for this sort of thing
Author:  PetenSoaf [ Tue Mar 26, 2013 7:01 pm ]
Post subject: 
Do yo think there might be a market for my garden retic 'emergency cooling' system as well?
You can see the end of it just under the top rad hose. . .a 10-inch pop-up sprinkler riser, capped at both ends with a couple of fan garden sprays aimed at the rad core screwed into the bottom. Fed from a 5 litre tank on the back floor via a windscreen washer pump.
If things are getting a bit hot, switch it on (it's linked into the same circuit as the thermo fan, so it'll only run when the fan is running) and it sprays water directly onto the core, dropping the temp really quickly. . .kinda like the intercooler water sprays the Subaru boys fit.
Author:  Minute [ Tue Mar 26, 2013 8:09 pm ]
Post subject: 
if you can make it easy to install and look bling.. i recon you patent it and make millions!!!
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