69 911 gauges snafu

[blackbird225]

Sigh... So I just spent $1150 getting my gauges done at North Hollywood. They came out beautiful.. But... I sent all 5 gauges, but the left two for oil, temp, etc were from a 70+ early car. They already had the extra bits I wanted- real measurements, etc. So, I get them out of the box and realize in an instant.. they don't have screw posts on the rear for my dash like the others do... I pulled out the old two gauges and they of course do have them. These gauges are exactly the same size but came with a huge rubber o-ring around the outside. That's not going to fit in my 69 dash, right? I mean, at some point Porsche realized what a pain it was to get those gauges in and out and went to this compression o-ring style- so did they also widen the diameter of the hole? Or should they fit with the big O-rings? Sure seems like it's about 2-4 mm too small to fit in there.

So if that's the case, what would you do? I thought about drilling a hole in the gauge, cut a long metric screw's head off and using it like a threaded rod. Then I will get shavings all in my new high dollar gauges

Cant believe I never checked the fitment of these two before I had them redone.

[donporfi]

You do not need to drill holes, you can use the threaded holes of these screws, insert a threded rod with jam nuts and will work like the studs in the original gauge.

[pors1968]

The lettering is slightly different from 69 than 72+

[ossiblue]

A couple of turns of friction tape or vinyl electrical tape, just behind the bezel lip, will give enough bite for the press-in gauges to fit securely in the opening.

[mgro1959]

If you ever have to drill and control the shavings coat the end of the bit with grease. This should keep most of the shavings from endering a hold. Thanks Rob