That is the high pressure oil pressure sending switch used by the dynamic oil pressure sending system by the 86 and later Vanagons. With the 2.1 engine, consider keeping the oil cooler and getting coolant plumbed to it. The longer stroke requires the oil cooler.

Dennis

----- Original Message ----- From: Craig Oda <craigoda@GMAIL.COM> Date: Monday, December 27, 2004 11:52 pm Subject: 2.1 waterboxer oil temp gauge?

> I'm in the process of stripping a 2.1 engine to the long-block so that > I can put the cooling system from a 1.9 onto it. I notice that there > is some type of sensor that is mounted into the block by the oil > filter. See picture below. Is this an oil-temp sensor? The 1.9 > does not have this sensor. > > http://oda.bz/vanagon/stand/van_engine/van_engine-Pages/Image0.html > > Also, thanks to everyone for the feedback on the engine stand. Since > I was in a rush, i did a temporary fix to my $99 CIP1 stand. This > stand is pretty unstable and was tipping over a lot. I put some wood > on it and I've used it for a week with no problems. > > If anyone is interested, here's a couple of shots of the simple > mod to > the stand. I can turn the engine 360 degrees on the stand with no > problems. I've also tightened and loosened M8 and M10 bolts with the > engine mounted and there hasn't been any problems. > > http://oda.bz/vanagon/stand/van_engine/van_engine-Pages/Image2.html > > http://oda.bz/vanagon/stand/van_engine/van_engine-Pages/Image1.html > > If anyone is interested in doing this without a welder, here is > what I did. > > I went to Home Depot and bought a 1 1/2" by 4" board on sale for > $5.50.I also got 6 metal plates, pre-drilled, and 2 wheels that > were 1 1/2 > in diameter. > > Each bolt is going straight through two pieces of wood and three > metal plates. > > The one rather interesting snag I ran into with my engine project is > that the air-intake distributor (metal box in center) from the 1.9 > can't fit onto the block bolts from the 2.1. This is puzzling, > because I thought that the cases for the 1.9 and 2.1 were exactly the > same? The air distributor from the 2.1 is slightly bigger than the > 1.9 and this prevents a good fit with the throttle body from the 1.9. > I've got it jammed on with silicone rubber now. I hope there's no > leaks... >