Swirl Tank neck attachment to PIM Aluminum Billet Tank

74lqqkrMember

I have a set of the old Billet Aluminum tanks from PIM and they have been for years with no problems.
Went to check my fluid and had to press pretty hard and twist the cap and the fluid was OK. Put the cap back on and fired her up. Now I see antifreeze coming out of the base of the neck at the tank and running down to the headers.

There is no weld at the seam but there are a couple of flat spots on the neck. One where the over flow fitting is screwed in and opposite that is the other. Does anyone know if the neck is screwed into the tank and these flat spots on the neck is there a LARGE wrench could be attached? If it's screwed in it would make sense that I could have backed it out a bit which would let it leak. I can't believe that I could brake an internal weld inside the tank.

Any Ides? I may try to screw it on tonight when I get home.

Thanks

1/25/161:50 PM

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74lqqkrMember

Well, It looks like the neck may be threaded. I was able to stop the leak by tightening the neck. I did not see it actually move but the leak stopped. I plan to make a wrench to keep in the tool bag just incase this happens again taking off the cap.

1/26/1612:25 PM

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jfb05177Member

thanks for repling back to your own post!

I would wondering if there might be an oring in that threaded arrangement also?

One axom I use when evaluating features on unknown devices is "If someone spent money to machine a feature on the piece, there had to be a reason"

so you noticing the wrench flats would indicate a reason

1/26/1612:37 PM

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74lqqkrMember

Thanks, here's a bad pic but it gets the point across. And my buddy riding shotgun. It's real funny when he's in the Pantera. He keeps trying to go to the back seat and he can't figure out why there isn't one.

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1/27/167:08 PM

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panteradougMember

Here is a thought. Some of these parts are constructed of components that are available at the time.

Presuming that the "wrench flats" are there because the next threads on most likely is a misconception.

You can "weld" aluminum very easily now with the advent of "lumaloy".

It's works just like traditional lead solder without needing the flux.

I would not presume that is not what the "fabricator" did on that tank?

1/28/166:48 AM

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74lqqkrMember

Good point Doug. I should just bite the bullet and pull it out and get it welded to be sure.
Thanks

1/28/1610:58 AM

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