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Old 10-15-2020, 07:05 PM   #1
Sckxyss
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Default Aftermarket radiator cap.

I buy a radiator some time ago at a swamp meet and the cap is not the standard one. It was made in USA and the threads are 2 1/2 in diameter.


Someone can tell me if a cap is available?


Regards.
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Old 10-15-2020, 07:06 PM   #2
Sckxyss
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Default Re: Aftermarket radiator cap.

Quote:
Originally Posted by Sckxyss View Post
I buy a radiator some time ago at a swamp meet and the cap is not the standard one. It was made in USA and the threads are 2 1/2 in diameter.


Someone can tell me if a cap is available?


Regards.
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Old 10-15-2020, 07:43 PM   #3
McMimmcs
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Default Re: Aftermarket radiator cap.

is that a Model A radiator ?
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Old 10-15-2020, 08:01 PM   #4
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Default Re: Aftermarket radiator cap.

Your cap is the right diameter, but that radiator neck doesn’t appear to be a Model A. A photo of the cap would help to determine if it resembles a Model A cap, and another picture of the neck with the cap as it sits (or doesn’t) in relation to the neck.
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Old 10-15-2020, 08:04 PM   #5
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Default Re: Aftermarket radiator cap.

That's been modified. Model A caps are not threaded. At least my '31 is not.
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Old 10-15-2020, 08:10 PM   #6
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Default Re: Aftermarket radiator cap.

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28-29 caps are threaded. 30-31 are not.
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Old 10-15-2020, 09:41 PM   #7
Bob C
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Default Re: Aftermarket radiator cap.

Looks like an aftermarket aluminum radiator.
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Old 10-16-2020, 10:19 AM   #8
Sckxyss
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Default Re: Aftermarket radiator cap.

Forgot to say, it's an aftermarket radiator i need a 28-29 cap. I have few old radiator who are not threaded. Thanks.
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Old 10-17-2020, 12:20 PM   #9
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Default Re: Aftermarket radiator cap.

Sell it at another swap meet.
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Old 10-17-2020, 01:57 PM   #10
McMimmcs
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Default Re: Aftermarket radiator cap.

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Originally Posted by daren007 View Post
Sell it at another swap meet.
Sometimes a bargain is not a bargain! Think you got taken on this one !
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Old 10-18-2020, 10:23 AM   #11
Purdy Swoft
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Default Re: Aftermarket radiator cap.

Threaded radiator necks are available from some model A parts vendors .. Care must be taken if installing a radiator neck or the radiator shell won't fit .
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Old 10-18-2020, 12:19 PM   #12
Gene F
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Default Re: Aftermarket radiator cap.

My radiator is a 28-29, and it is threaded
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Old 10-18-2020, 02:37 PM   #13
Purdy Swoft
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Default Re: Aftermarket radiator cap.

The 1930 pick up and AA trucks up to June 1930 used a 28-29 style radiator with the later style tabbed cap .
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Old 10-18-2020, 03:17 PM   #14
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Default Re: Aftermarket radiator cap.

I believe the original 28-29 radiator cap threads are 2 3/16 inch. If the cap you have is indeed 2 1/2 inch, it's not correct for an A.
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