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Author: Subject: Cooling system questioin
TOO BADD

posted on 9/8/08 at 06:07 PM Reply With Quote
Cooling system questioin

Would you need an overflow pipe from the header tank in a sealed system using a standard type rad cap on the tank ?
Thanks for any replies

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indykid

posted on 9/8/08 at 06:16 PM Reply With Quote
no

tom






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TOO BADD

posted on 9/8/08 at 06:31 PM Reply With Quote
Thanks, will learn to spell next time !
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britishtrident

posted on 9/8/08 at 06:43 PM Reply With Quote
You don't need it but generally speaking a good idea saves potential mess in the engine bay + stops the electronics getting sprayed if the engine boils.





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02GF74

posted on 9/8/08 at 07:27 PM Reply With Quote
quote:
Originally posted by britishtrident
You don't need it but generally speaking a good idea saves potential mess in the engine bay + stops the electronics getting sprayed if the engine boils.


hmmm, maybe i am misunderstanding the question of the response but if you do that, then it will no longer be a sealed system,

the expasnion tank souod be about 1/2 full when cold and large enough to hold the water when it expands when hot.






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TOO BADD

posted on 9/8/08 at 07:38 PM Reply With Quote
Interesting replies.......
the reason for the question is .. I have a low water sender in the tank but if I fill to half level it seems to spit a little out to the level sender and keeps flashing my warning light. never empties out but just keeps to this level.
A bit annoying to get a bright red light flashing at you. Thought of blocking the overflow to overcome

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adithorp

posted on 9/8/08 at 08:05 PM Reply With Quote
Sounds to me like the presure cap is knackered. Level should only increase slightly when hot. If the level is coming up enough for to push water out then the cap is duff. It should only release presure when when there's a problem.

adrian





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TOO BADD

posted on 9/8/08 at 08:06 PM Reply With Quote
brand new cap !
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indykid

posted on 9/8/08 at 09:07 PM Reply With Quote
hmmm, just reread the OP and i notice you say it has a standard type rad cap.

i assumed with you saying it was a sealed system that it'd have a plastic header tank screw cap and thus no provision for an overflow connection.

can we have a picture of your system just to confirm the specifics? if it is a sealed system, the small top pipe will be a breather to let air escape from the engine into the tank, not an overflow.

tom






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britishtrident

posted on 10/8/08 at 02:55 PM Reply With Quote
quote:
Originally posted by 02GF74
quote:
Originally posted by britishtrident
You don't need it but generally speaking a good idea saves potential mess in the engine bay + stops the electronics getting sprayed if the engine boils.


hmmm, maybe i am misunderstanding the question of the response but if you do that, then it will no longer be a sealed system,

the expasnion tank souod be about 1/2 full when cold and large enough to hold the water when it expands when hot.


If the engine boils no amount of airspace would be enough --- I can't remember the exact figure but as steam water has about 2000 times the volume it has as liquid water.





[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]

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