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Radiator Cap - Proper lbs
#1
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Frank
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Does anyone happen to know the correct lbs for a radiator cap on a 1954 Packard. Is it 7 lbs or 13 lbs. Mine says 13 lbs on it but I see one on Ebay rated at 7 lbs for the years 1941-1954. Does it really make a difference anyway? Thanks for your opinions on this - Frank

Posted on: 2009/8/21 19:29
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Re: Radiator Cap - Proper lbs
#2
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Eric Boyle
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A 7 pound cap will make sure you don't find as many leaks as a 13 pound cap will.

Posted on: 2009/8/21 19:59
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Re: Radiator Cap - Proper lbs
#3
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HH56
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By 54 it was 12psi. If the radiator and hoses are in good condition, the 1 psi difference shouldn't matter much but an old radiator which has had some corrosion (or old hoses) might not be able to stand that much pressure. If it doesn't boil over, 7 would be my choice.

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Posted on: 2009/8/21 20:00
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Re: Radiator Cap - Proper lbs
#4
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Frank
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Thanks for the information. I have the radiator at the shop waiting for a report on whether it can be patched up or if it needs a new core.

Posted on: 2009/8/21 20:19
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Re: Radiator Cap - Proper lbs
#5
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HH56
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Good luck and hope it can be fixed. If you go back with the high pressure cap, remember you also have a heater core (or two) that might also be in delicate condition.

Posted on: 2009/8/21 20:26
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Re: Radiator Cap - Proper lbs
#6
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BigKev
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Based on that picture, and the reference to the 26xx models, it sounds like '53 was the first year for 12lb caps.

Posted on: 2009/8/21 23:23
-BigKev


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

1937 Packard 115-C Convertible Coupe -> Registry | Project Blog
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Re: Radiator Cap - Proper lbs
#7
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HH56
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It appears so -- but apparently not across the full line. When the 53 specs published Nov 52, the Clippers still had 7#, the SC item was from Feb 53 stating those chassis in production (all seniors) had it but no mention of Clippers needing or getting it. In 54 it was standard across the line.

Posted on: 2009/8/22 9:03
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