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V-8 Engine Tech


Mopar Big Block Talk

by carpenter1 » Tue Aug 27, 2019 4:14 pm


Have being checking out the thermostat on my CV 8 rebuild.
I have tested it by immersing it in water and bring it to boiling point.
It opens up fully but only when the water boils.
I believe that the unit should open on or around 57C and fully at 75C.
I would have thought that it would work if OK or not work at all if at fault.
As the thermostat is pretty much welded (aluminum corrosion) into the housing I would be happy to leave alone but now have my doubts as to weather or not its going to be opening up at to high a temperature.
Can anyone enlighten me on this matter.
Many thanks.
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by colin7673 » Tue Aug 27, 2019 4:19 pm


If I was you for the sake of a few pounds after flushing the cooling system out, if you haven't already done so, I'd put a new one in.. after all, if you trust the old one and put it back in, what would you think if it then boils?
New one
Only working half a day now.
Wondering when it went wrong.
now normal...
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by Steve Payne » Tue Aug 27, 2019 7:14 pm

As Colin says replace it.

Fit a High Flow 160.

JOC official Lightning engineer
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Steve Payne
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by carpenter1 » Wed Aug 28, 2019 1:18 pm

Your right.
Have managed to get the old one out, and contacted Rejens. Will ask re the Hi Flo 160.
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