kelloggs
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| posted on 12/5/07 at 07:29 PM |
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water problem
I've got a problem with water backing up through header tank and draining back to filler rad cap and losing water, any ideas, advice welcome.
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nitram38
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| posted on 12/5/07 at 07:38 PM |
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I've got a pond at the bottom of the garden.
I know it's not relevent, but nor is your question.
What car, what engine, what pipe layout etc
Do you think we are all clairvoyent?
[Edited on 12/5/2007 by nitram38]
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kelloggs
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| posted on 12/5/07 at 07:52 PM |
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water problem
whoops sorry! I've got a ford crossflow engine 1600 fitted in luego velocity with a escort rad, new water pump. bottom hose to water pump
fitted with T piece in, 1 feeds manifold and webber Dgav 32/36 the other feeds header tank and return from header tank to rad cap filler housing
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nitram38
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| posted on 12/5/07 at 08:04 PM |
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Right!
A header tank requires the larger pipe at the bottom to be tee'd into your bottom hose and the small pipe connected in your top hose from the
thermostat.
This will ensure movement of water, removal of air and expansion of water when it gets hot.
The old heater pipes from the pipe before the stat and the pipe on the water pump can be used for your heater or just connected to each other. I
prefer to put a heater valve here so that I can restrict the water flow a bit.
If you are running just a pure expansion bottle with one pipe, this goes to your rad cap on your radiator overflow pipe.
Its a long time since I built a crossflow!
[Edited on 12/5/2007 by nitram38]
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paulf
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| posted on 12/5/07 at 11:03 PM |
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You may find that there is air trapped in the thermostat housing. I had that problem when i first fitted my crossflow, and found that drilling a 3mm
hole in the thermostat allowed it to escape.You do need to conect a pipe from the thermostat housing back to the header tank to allow air to return to
the tank which should be the highest point of the system.
My crossflow was plumbed in like that and never gave me any poblems.
Paul.
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britishtrident
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| posted on 13/5/07 at 07:26 AM |
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You should have only one pressure cap this should be at the highest point in the system eg the header tank.
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nitram38
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| posted on 13/5/07 at 07:36 AM |
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quote:
Originally posted by britishtrident
You should have only one pressure cap this should be at the highest point in the system eg the header tank.
You can buy blanking caps with no spring release. This would make the overflow open on the rad. You could use tis as the small bleed off for the
header tank.
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