My Beetle Restoration

Protecting Inside Of Tunnel Bottom Plate

by on Nov.17, 2020, under Chassis

I decided to remove all of the factory's protective coating on the inside of the bottom tunnel plate. It was in very good condition with almost no rust damage there, which is surprising as this area was holding water for many years. The only area with damage was at the front end where it connects to the frame head bottom plate. Here, both had either rusted all the way through or had deep pitting.

After the protective coating was removed, I went over the inside area with a wire wheel on a drill. I masked off the sides where it will be welded back on the tunnel, and also masked the damaged area on the front end. The damaged area will be treated with a rust converter and I will make and weld on an extension to replace the rusted-through area. I then sprayed the inside area with Eastwood Matte Black Rust Encapsulator. This should protect it protected for a while. Once it is welded back on to the tunnel and all tunnel repairs are completed, I will recoat the inside of the tunnel again.


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