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Kirkham Motorsports

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  #1 (permalink)  
Old 04-11-2010, 04:56 PM
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Default Expansion tank cap problem! What are you guys using?

Ok

What are you guys using for your expansion tank fill caps? I have an early T-Bird tank (rad inlet and fill port on the passenger side) and ordered this cap from Obsolete ford parts:

http://www.classicautopartsgroup.com...=S08-14060-110

They said this is what is used for the expansion tank for my tank.

But, low and behold, after waiting 2 weeks for a back order to be delivered. It leaks!

$24 cap and it leaks. The box says made in USA by www.amkproducts.com part number ARC-62C with the reference of 1961-66 chrome radiator cap 1962-66 Fairlane, 1962-66 Ford C2SZ-8100-A

Yes/No?
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  #2 (permalink)  
Old 04-11-2010, 05:22 PM
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I'm using the 14# cap from NAPA. Nothing fancy about it. Works fine.

John
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Old 04-11-2010, 08:18 PM
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John

Do you have a part number?
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Old 04-11-2010, 08:56 PM
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Try this one, works very good.
http://www.summitracing.com/parts/BSP-75120/

Alfredo
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Old 04-12-2010, 04:30 AM
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Quote:
Originally Posted by Kit Cars Mexico View Post
Thanks, but I am trying to go with the origional look. I have an origional 65 side-oiler and trying to keep it as close to origional look that I can.
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Old 04-12-2010, 05:45 AM
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It's nothing special, you should be able to obtain it from a number of early Ford or Shelby parts suppliers. If the cap is leaking it is likely a problem with the seal on the cap or something with the tank itself.
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Old 04-12-2010, 06:25 AM
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Call Gregg Donahue at Donahue Collector Cars in FL . He has them in stock ... I believe they are 12 psi . Mine is chrome . They aren`t NOS , but a very good repop . 352-344-4329 .

Bob
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Old 04-12-2010, 08:46 AM
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paint it black and no one will ever know............
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Old 04-12-2010, 08:52 AM
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Quote:
Originally Posted by Bobcat View Post
Call Gregg Donahue at Donahue Collector Cars in FL . He has them in stock ... I believe they are 12 psi . Mine is chrome . They aren`t NOS , but a very good repop . 352-344-4329 .

Bob
I think it is 14#?
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Old 04-12-2010, 09:27 AM
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Any 13# cap for early Ford application such as early Mustang works fine. Check with any of the Mustang restoration places and suppliers, easy to locate..
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Old 04-12-2010, 12:34 PM
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Quote:
Originally Posted by dlotz View Post
Ok

What are you guys using for your expansion tank fill caps? I have an early T-Bird tank (rad inlet and fill port on the passenger side) and ordered this cap from Obsolete ford parts:

http://www.classicautopartsgroup.com...=S08-14060-110

They said this is what is used for the expansion tank for my tank.

But, low and behold, after waiting 2 weeks for a back order to be delivered. It leaks!

$24 cap and it leaks. The box says made in USA by www.amkproducts.com part number ARC-62C with the reference of 1961-66 chrome radiator cap 1962-66 Fairlane, 1962-66 Ford C2SZ-8100-A

Yes/No?
I've had problems with the quality of AMK parts over the years. Starter solenoids have been particularly dodgy. I'd buy a cheapo parts store cap to test and see if it's the cap or the coolant tank. If it's the cap, send it back for a replacement. JMHO.
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Old 04-12-2010, 01:23 PM
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Another thought might be to have the fill neck area looked @ by a radiator repair shop. They have a tool that rolls the edges and contacts the 2 seats the cap seals against.

I know you do not want any short cuts but here is a trick that might get you to the shop to get her fixed. The rubber gasket on the base of your rad cap is held in place by pressure from a large washer with a rivet clamping it in place. Steal the rubber gasket from your old cap and then put it on your new cap to double the thickness of the seal area. It worked for me until I could get a more permanent fix completed.
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Old 04-12-2010, 01:37 PM
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OEM Style:
http://www.mustangsunlimited.com/ite...asp?T1=8100+01

Alfredo
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Old 04-12-2010, 11:48 PM
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AMK makes good stuff. -

- i would check the flatness of the neck opening on the expansion tank.
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Old 04-13-2010, 08:12 AM
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Default A pic of what I'm using...


Last edited by patrickt; 11-02-2016 at 11:36 AM..
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Old 04-13-2010, 11:34 AM
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Same as mine.
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Old 04-13-2010, 11:35 AM
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Quote:
Originally Posted by patrickt View Post
Yep

Thats what I got now. The supplier sent me the wrong part labled as the correct part. It threw me for a loop because the part numbers matched up and the cap seemed to fit nicely. But it didn't have enough spring force to prevent the pressure from leaking around the side of the gasket.

All fixed now!
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  #18 (permalink)  
Old 04-15-2010, 09:13 PM
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To keep this 65 original you can not use the Motorcraft because it did not come on the market till about 1972. You will want a Autolite radiator cap and the Mustang restoration guys should have the correct ones.
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