Are they VDO gauges? If so do they use a plastic ring or two threaded rods and a standoff aluminum bridge bracket for mounting. If the latter as you stated the hole in the dash is of a larger diameter than the bezel (2.2″) so putting some layers of veneer in the dash hole will not allow you to tighten the nuts on rods to sandwich the bezel of gauge/dash/mounting hardware. You may want to consider gluing/screwing a block drilled to same diameter as gauge body on inside of dash then mounting gauge to block and adjusting so bezel is proud of dash face similar to other gauges. By using this method it will minimize possibility of gauge being pushed through dash and shorting connectors on back of gauge. You still can use veneer to fill gap between dash hole and bezel diameter

If it uses the plastic ring you will have to find a similar sized ring to tighten the gauge on a mounting bridge using a two locking ring configuration. On my gauges the threads were recessed on the locking ring and the gauge did not have threads on the entire depth of the gauge so I had to play around with different configurations to get it to mount. Would probably easier to draw a diagram than trying to describe the two options I have outlined. Maybe on next iteration of web soft we could see a drawing function to help illustrate a point

Don’t take this wrong, but how about getting a gauge to fit the hole?

If the hole truly is only a “tad” too big, how ’bout a big washer.  Get some heavy duty aluminum flashing from Lowes, and use an inexpensive hole saw to cut a hole exactly the size of your gauge.  Then using a slightly bigger (two “tads” bigger is good) hole saw, cut again to be left with a large flat washer which could be polished up (you might want to polish it before cutting) and would probably look OK.

• This reply was modified 8 years, 2 months ago by Royal.