Quote:
Originally Posted by taylorjm
Finally got the gauges in. These are 2" gauges an require a 2-1/16" hole. They are electric gauges so they need power instead of the wired or tube fed sending units. I had the same issue with the oil pressure sending unit that I had with the water temp sending unit. The threads are 1/8" npt but they seem really shallow. I needed to add a 1/8" npt close nipple and coupler to get the oil sending unit to fit. It was too wide to go in close to the block. I had to take a 1/8" npt pipe tap and run it through the oil pressure hole just like the water temp hole to cut the threads a little deeper. It didn't take much. I could twist the tap in by hand up until the last couple turns that I put a socket wrench on it but it wasn't cutting much out at all. Then took a q-tip and pulled out just a few file shavings. Then the 1/8" npt nipple went in just fine.
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Jim
If it was me I would remove the oil sender and slip a piece of hose over the nipple then crank it over to flush some oil through the oil port that you tapped just to be sure you don't have some chips stuck inside. Hate to see a chip end up in a bearing and roach the engine. If you put a tee in place of the nipple you can hook up the warning light. Any hydraulic shop should have a 1/8" male X female X female tee fitting.