31 Eaton radiator cap

[400A]

I have a choice 31 Eaton radiator cap, but it is unusable because the inside steel portion rotates within the stainless shell. Does anyone know of a reliable way to fix this?

 

[nkaminar]

Photos would help.

 

[J Franklin]

Jb-weld

 

[Bob Bidonde]

I also recommend that you add corrosion prevention to the cap.

 

[400A]

The corrosion protection is a good idea. I use POR on my gas caps and the coating lasts a few years before it begins to peel. At least whatever peels off is likely caught in the spark arrestor so no contamination of the fuel.

 

[Bick in New Zealand]

I had a similar problem a while back. The difference was mine was on the car and I couldn't get it to release. I ended up drilling a small hole and putting a pin through it so that both parts were locked together. This was a mint Eaton, that had been restored. Now sitting on the shelf waiting for a solution.....
I am currently running a locking cap with a greyhound.