speedyxjs
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| posted on 24/9/09 at 07:16 AM |
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Cooling system plumbing
I want to start getting the cooling system plumbed in today but have a few questions.
I want to use the old power steering reservior but the inlet/outlets, both go to the bottom of the reservior. Would this be a problem?
Also, as the tank doesnt have a pressure release cap, could i one of
these that i have spare, placed at the
highest point in the system?
How long can i resist the temptation to drop a V8 in?
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britishtrident
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| posted on 24/9/09 at 07:41 AM |
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No you need a proper header tank with a pressure cap .
The coolant needs to be under pressure or the coolant will boil --- these days cooling systems run at about 1 to 1.5 bar gives a boiling point of
about 120+ C
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speedyxjs
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| posted on 24/9/09 at 07:44 AM |
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Ok, thanks 
ETA - does it need to be the highest point in the system?
[Edited on 24-9-09 by speedyxjs]
How long can i resist the temptation to drop a V8 in?
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richardlee237
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| posted on 24/9/09 at 07:50 AM |
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Judging by a few posts on here, there is some confusiopn as to how cooling systems work. Particularly with regard to expansion tanks and header
tanks.
The link below may shed some light on the subject.
Cooling System linky
Quote Lord Kelvin
“Large increases in cost with questionable increases in performance can be tolerated only in race horses and women.”
Quote Richard Lee
"and cars"
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Bluemoon
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| posted on 24/9/09 at 09:53 AM |
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^^ dito there always is! No idea why, it's not rocket science..
Dan
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MikeRJ
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| posted on 24/9/09 at 10:20 AM |
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quote:
Originally posted by speedyxjs
Ok, thanks
ETA - does it need to be the highest point in the system?
If you have a header tank with a pressure relief cap then yes, otherwise you won't be able to fill the system up with coolant, and the system
will be prone to air locks.
It's possible to have a cooling system without a header tank but with an overflow bottle which can be mounted below the top of the cooling
system. Rather than coolant circulating through this tank, it just catches the excess coolant as it heats up and expands, and is then sucked back
into the engine when it cools. You need the proper pressure relief cap with the two way valve to use this system.
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miikae
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| posted on 24/9/09 at 10:21 AM |
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Idealy the header tank being at the highest point is easier to top up the system, but having said that i could'nt do mine that way, so my header
is on the side rail with air bleed point on the highest heater hose, it does present problems topping the system up though.
Edited to add this from another thread- I am running what i call a sealed system , as the pressure cap blow off outlet is connected direct to my
expansion tank(off a corsa) which is just over half full with coolant , even after a good rally type thrashing the cooling fan comes on but up to now
no problems with the system.
Mike
[Edited on 24-9-2009 by miikae]
If it can be done it i will be done .
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