Hi all - I'm new to the forum but not the 1800. Had a '71E from '73 until marrige and kids (sold it to a friend in ''85). Just bought a nice '70E (kids are gone now!) some IPD parts and nice touches from earlier owners. After some familiarization, set out on a road trip but had to abort that when I saw the oil pressure gauge doing something very, very odd. The needle was quivering and generally reading a bit low. I shut down right away but noticed that the gauge reading actually went UP a bit as I slowed - very odd. At first I thought it was something in the oil pump; maybe the bypass spring is weak or stuck or it had some strange cavitation problem (not real likely at 2500 - 3000 RPM). I had just changed the oil, of course I checked it - it was fine. Knowing of Smiths' reputation from my experinece with my '71 (yeah even when they were new, they were flaky - I've never seen an E with a really useful oil temp gauge), and NOT real anxious to tear into the bottom end of the engine (which sounded fine all through this episode and still does) I decided to put a "T" in the pressure line and installed a second after market gauge in parallel with the Smiths. Bottom line: the Smiths seems to be reading about 8 PSI low - not a real surprise for a 40 year old gauge. I've since put at least 400 miles on the car and the oil pressure seems to be fine under all conditions. But - here's the punch line -> I've yet to see either gauge flicker like the Smiths did that one and only time.<p>SO, here is question #1 for you all: has anyone else ever seen a Smiths gauge (or ANY mechanical gauge for that matter) decide on its own to go into a little dance like that? We're talking the needle centered over about 30 PSI at highway speed (too low normally) and quivering very rapidly maybe +/- 4 PSI.<p>I've visited with the folks as Noiesinger (spelling?) and they tell me $125 for a rebuild; which I may do. But that (and the reputation of Smiths) has lead me to at least <I></I>consider<I></I> a different gauge (sorry to the pusiests out there) and <B></B>that<B></B> has me wondering if the 1800 was the only car to ever use what seems to be a really odd size gauge set. So question #2 is this: If I measure it correctly (and at my age that's a real question <IMG NAME="icon" SRC="http://www.vwvortex.com/zeroforum_graphics/screwy.gif" BORDER="0"> ) these are about 57mm gauges rather than the much more common 52MM. Did I miss something there?<p>Finally, if anyone has had experience with alternate gauges, both how they look vis-a-vis the originals and how they've worked for you, I am in the information gathering mode.<p>Thanks in advance for any help.