Poor heater output-check this!

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Poor heater output-check this!

Postby Linear.audio » Mon Jan 16, 2012 8:56 pm

Sort of in conjunction with my post about fitting a Fiesta electric heater valve(should that also have been posted in this section??).
Having added the electric valve block to my system, I was still underwhelmed by the heater output, despite having fitted a larger (Austin 1100) flushed out matrix and 2 speed fan.
Finally I investigated the only possible restriction left- the old original heater valve on the top of the cylinder head by the battery. As I wanted to end up with a stub to connect to the Fiesta valve, I hacksawed the valve section off the top of the alloy body, leaving a handy stub to accept a rubber pipe :D ,and found that the rubber seal inside the old valve head had broken up and was severely blocking the water flow! That part is now in the bin where it belongs, and the heater is....WOW!! working. My feet actually got uncomfortably warm today after 4 miles :D
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Postby Plin » Mon Jan 16, 2012 8:59 pm

Cor, I'm jealous my tatty old N Reg Renault Clio could only oblige lukewarm heater output in this morning frost!
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Postby Linear.audio » Mon Jan 16, 2012 9:19 pm

Plin....With an alloy matrix, no doubt furred up inside- just wait for that strange curry like smell which tells you the antifreeze is leaking from the pinhole corrosion spot, followed by the experience of being in a mobile steam room :(
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Postby Plin » Tue Jan 17, 2012 12:06 am

Oh what joys I have to look forward to!  Thanks for the tips!
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Postby MM » Tue Jan 17, 2012 1:30 pm

Linear.audio:61015 wrote:Plin....With an alloy matrix, no doubt furred up inside- just wait for that strange curry like smell which tells you the antifreeze is leaking from the pinhole corrosion spot, followed by the experience of being in a mobile steam room :(


You're supposed to fill it with antifreeze mix, not Pot Noodle! :wink:
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Postby Linear.audio » Tue Jan 17, 2012 6:32 pm

:lol:  :lol:  :lol:
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Re: Poor heater output-check this!

Postby Fingolfin » Wed Jan 14, 2015 6:40 pm

Had a real good heater core pinhole leak recently - such that it would spit antifreeze droplets onto the windshield with the fan on. :roll: A heater is supposed to defog, not fog!

So I'm having some spare cores pressure-tested. But that's a brilliant idea, about the block valve.
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Re: Poor heater output-check this!

Postby Rick1963 » Thu Jan 15, 2015 3:59 pm

When I got my minor 3 years ago the round heater had a leak, I searched for a good replacement to no avail. I tried this stuff,
http://www.kseal.com/uk/?gclid=CJju5Jeu ... tAodFSgAuA
Not had any problems or leaks since then.
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Re: Poor heater output-check this!

Postby emjay » Thu Jan 15, 2015 4:07 pm

When I rebuilt my 1959 2 door back in 1980, the heater now had a leak. I put some Bars Leak in it and it is still holding. I'd say that is long term.
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Re: Poor heater output-check this!

Postby chesney » Thu Jan 15, 2015 4:30 pm

Our Slat Grill used to live on K - Seal :lol:
Did the trick ;)
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