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thermostat issies 

 

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 Post subject: thermostat issies
Posted: Sun Jul 20, 2008 11:36 pm 
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hey all, as sone of you know i recently installed an EL XR6 motor to my fairlane, and while i was at it a new water pump and thermostat... ever since then my thermostat housing keeps springing leaks. we have tried gasket goop aswell as brand new gaskets but nothing seems to work. i bought the thermostat from autobarn and i think it might hold too much pressure behind it because when i ran the car with none i never had a leak. altho i didnt have any hot water for the heater i think thats what im going to have to do. or try my old one

 

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Posted: Mon Jul 21, 2008 12:01 am 
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Have you tried putting the thermostat in a saucepan of cold water, then boiling the water to see if it opens before the water is full on boiling, and how much it opens in total?

 

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Posted: Mon Jul 21, 2008 12:04 am 
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its 2 weeks old, i would assume a new thermostat would work...

 

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Posted: Mon Jul 21, 2008 12:05 am 
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Yeah, you'd hope so, but it wouldn't be the first time something brand new didn't work properly, and it's easy enough and cheap to check.

 

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Posted: Mon Jul 21, 2008 12:07 am 
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true. ill give it a go tomorrow

 

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Posted: Mon Jul 21, 2008 12:08 am 
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when you say gasket goop do you meen that brown brush on stuff??

try black gasket silicon or the ultra blue gasket silicon..
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Posted: Mon Jul 21, 2008 12:11 am 
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we used the blue one. the strong stuff. i cant work it out...

 

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Posted: Mon Jul 21, 2008 12:12 am 
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Good idea there, ultra blue is good s**t!

 

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 Post subject: thermostat
Posted: Mon Jul 21, 2008 1:46 am 
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Make sure you give the seat where the thermostat sits in the housing a thorough clean and even a light sand, use genuine thermostat and seal, i put grease around entire seal to make sure it seated and sealed properly, and last but not least dont overtighten screws into housing or you will have constant leaks. I wouldnt use the goop there as if it clumps in one section this alone will cause a leak. :)
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Posted: Mon Jul 21, 2008 2:13 am 
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i had problems with the thermostat seal leaking on our falcons and found that coating it in petroleum jelly (vaseline) works very well. i'm not sure where I got this idea from but I'm sure it was from a workshop manual from another car.
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 Post subject: Re: thermostat
Posted: Mon Jul 21, 2008 8:07 am 
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ghia97 wrote:
Make sure you give the seat where the thermostat sits in the housing a thorough clean and even a light sand, use genuine thermostat and seal, i put grease around entire seal to make sure it seated and sealed properly, and last but not least dont overtighten screws into housing or you will have constant leaks. I wouldnt use the goop there as if it clumps in one section this alone will cause a leak. :)


its not the actual thermostat thats leaking its where the housing meats the block

 

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Posted: Mon Jul 21, 2008 9:17 am 
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have you checked to see if there is any fine cracks?
iv seen a few of them crack from over tightening.
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Posted: Mon Jul 21, 2008 5:56 pm 
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na i havnt checked that. tho i will do. cheers

 

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Posted: Fri Jul 25, 2008 7:46 pm 
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under the heat of the engines operating tempreture the housing will warp not much but enough you need to lay wet and dry sand paper on a flat surface and rub it slowly back and forth, turn it up and you will see the differance high and low
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Posted: Fri Jul 25, 2008 7:47 pm 
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i think ill just buy a new thermostat housing. they are only like 30 bucks from repco

 

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