| Re: [GMCnet] Freeze Plugs- what do i need to know ? [message #351698 is a reply to message #351471] |
Mon, 20 January 2020 17:38   |
James Hupy
Messages: 6806
Registered: May 2010
Karma:
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Senior Member |
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Original pressure caps were 9 psi. Heater core is the weak link in the GMC.
The new aluminum radiators come with a 15 psi cap. So they will test to
that pressure. But, the heater core may not.
Jim Hupy
Salem, Oregon
On Mon, Jan 20, 2020, 3:28 PM Bruce Hislop via Gmclist <
gmclist@list.gmcnet.org> wrote:
> You can correct me if I'm wrong, and I probably am wrong... but isn't the
> rad cap of the GMC rated for 9 PSI and over 12PSI can balloon the
> radiator...
> So I would not test it over 9 or 10 PSI.
>
> Just my farmboy shade-tree mechanic way of seeing things.
>
> --
> Bruce Hislop
> ON Canada
> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
> My Staff says I never listen to them, or something like that
>
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