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Packard Don

Re: Motor getting Hot

#11

Home away from home

The 1939 systems were non-pressurized with the radiator having very large cans that cannot tale any pressure, They might get by with a 4lb cap but no more than that! I once tried a higher pressure one and watched the tanks grow before quickly taking the cap off before any serious damage happened.

Posted on: Yesterday 21:48

All generalities are false.

Don Pierson
Packard / IMPERIAL page
CA DMV Licensed Vehicle VIN Verification

1951 Henney-Packard 3-Door Long Wheelbase Air Force Ambulance
1954 Packard Patrician
1954 Packard Patrician Parts Car
1956 Clipper Custom Sedan

BigKev

Re: Motor getting Hot

#12

Webmaster

Most of the unpressurised radiators have the overflow tube below the level of the cap seal seat. So chainging the radiator cap won't many any difference, unless you sealed off the overflow tube.

Posted on: Today 18:19

-BigKev

1954 Packard Clipper Deluxe Touring Sedan -> Registry | Project Blog

1937 Packard 115-C Convertible Coupe -> Registry | Project Blog

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