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Re: Radiator Cap
#11
Just popping in
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wgb1956
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I am also looking for a 12 or 13 lb pressure cap. My 1953 has a 1" deep filler neck, not the standard 3/4" that most other vehicle brands seem to have used.
Does anyone have a 13 lb. cap cross-reference number that will work for this 1" depth? (Or a good used cap to sell?)
I can find 13 lb/3/4" depth caps, and 7 lb/1" depth caps, but not the 13 lb/1" variety.
I believe the numbers listed in the Packard cross-reference list are for 3/4" depth. (Did Packard use both 3/4" and 1" deep radiator necks from 51-54? Both radiators I have are 1" deep).
Many thanks for the assistance, as always.

Posted on: 6/20 10:10
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Re: Radiator Cap
#12
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53 Cavalier
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Quote:

wgb1956 wrote:
I am also looking for a 12 or 13 lb pressure cap. My 1953 has a 1" deep filler neck, not the standard 3/4" that most other vehicle brands seem to have used.
Does anyone have a 13 lb. cap cross-reference number that will work for this 1" depth? (Or a good used cap to sell?)
I can find 13 lb/3/4" depth caps, and 7 lb/1" depth caps, but not the 13 lb/1" variety.
I believe the numbers listed in the Packard cross-reference list are for 3/4" depth. (Did Packard use both 3/4" and 1" deep radiator necks from 51-54? Both radiators I have are 1" deep).
Many thanks for the assistance, as always.


I haven't had to go looking for a radiator cap for my 53 Cavalier, but it does have a 1" filler neck as well. When I look at a couple of the radiator caps on the cross-reference list for a 53 they are for a 3/4" neck. Maybe something that should be reviewed and updated, unless some 53's did have a 3/4" neck. Max Merritt lists a radiator cap for $50. Ouch!

Posted on: 6/20 11:31
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Re: Radiator Cap
#13
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todd landis
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Posted on: 6/20 12:56
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Re: Radiator Cap
#14
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53 Cavalier
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Posted on: 6/20 13:56
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Re: Radiator Cap
#15
Just popping in
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wgb1956
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Yes, the Velvac catalog only has 4 and 7 lb at 1” depth.

Posted on: 6/20 15:20
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Re: Radiator Cap
#16
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BigKev
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A RC-6 is a 13lb cap. The specs show a cap depth of 24.4mm which .961 inches.

Posted on: 6/20 16:06
-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
#17
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53 Cavalier
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Quote:

BigKev wrote:
A RC-6 is a 13lb cap. The specs show a cap depth of 24.4mm which .961 inches.
+

I looked at that as well, but the filler neck height is shown as 19.5 mm or 3/4". I think 24.4 mm is the total cap height.
https://partshawk.com/acdelco-rc6-radiator-cap.html

Posted on: 6/20 16:14
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