Hell Hole Inspection Hole, How to check your longs from the inside Options

[Arno914]

Hello,

I am not sure if this has been discussed before.
We have a "Hell Hole Inspection and Rustproofing Hole" on our cars. (IMG:style_emoticons/default/smile.gif)

I found out while viewing pictures of NOS sheet metal from other members in this forum. (IMG:style_emoticons/default/dry.gif)
Close to the rear trunk cross panel hidden under the big round plastic covers there is a rather big (Ø20mm) hole on each top side of the longs. Perfect for viewing with a probe and for rustproofing. Reaching down all the way to the bottom underneath the infamous hell hole. Enclosed are some (poor quality) pictures of my 71. Makes me happy to see almost no rust here.

Cheers, Arno

(IMG:http://www.914world.com/bbs2/uploads_offsite/up.picr.de-24260-1617469009.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/up.picr.de-24260-1617469011.2.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/up.picr.de-24260-1617469012.3.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/up.picr.de-24260-1617469013.4.jpg)

[930cabman]

Thanks for the tip Arno, is there a recommended rust proofing agent for coating the insides? my gut tells me an light weight oil based product

[worn]

Thanks for the tip Arno, is there a recommended rust proofing agent for coating the insides? my gut tells me an light weight oil based product

The little british car world uses waxoyl. Mineral spirits and wax judging from the smell. #M makes a spray can version which seems a bit more sophisticated by the smell and appearance. The top part of the long rarely rusts. Get a boroscope camera and drop it down to the bottom. They are now pretty cheap, and some of them are waterproof so you can swallow them - a go figure sort of thing.