Thickness of 911 body steel?

[Paul Schooley]

Anyone know offhand what guage of steel early 70's longhoods used? I'd like to keep the metal the same thickness, but suppose it's a different thickness than N American steel??? Body shops recommend 20 guage for general repairs.

[bobmagyar]

There are different gauges used in different places.

Perhaps this thread can become the go-to source for this information.

I should have taken some notes as my car was being worked on.

[kenikh]

Rusted or not rusted?

[Paul Schooley]

I'm getting the impression that perhaps the fenders, doors, hoods are different thicknesses than the main unibody structure? I realize rust can alter the thickness as well, but I'm mostly concerned about the original thicknesses. Would be nice if we could put together some sorta chart for those ready to embark upon self inflicted torture, errrrrr, diy bodywork...

[Paul Schooley]

This might be of help to all. I've found out that most body panels are 0.7mm and structural stuff is 1.0mm with multiple layers of 1.0mm used where structural stiffness was required. Here's a conversion chart:

Gauge inch mm

30 0.0157 0.3988
28 0.0187 0.4750
26 0.0217 0.5512
24 0.0276 0.7010
22 0.0336 0.8534
20 0.0396 1.0058
18 0.0516 1.3106
16 0.0635 1.6129
14 0.0785 1.9939
12 0.1084 2.7534
10 0.1382 3.5103
8 0.1681 4.2697

Hopefully this will be of a benefit to anyone performing body surgery on their beloved 911's. If anyone has any better, more accurate info to offer on this subject please do so.