oil pressure switch stripped need advice Options

[LCOX]

I noticed that the factory oil pressure switch was leaking on my 914. I removed it but the previous owner put it in crooked and stripped the threads in the case that the switch threads into. Can this be repaired with engine in car? What size drill, tap and insert do I need or is there another way to fix it? Thanx L

[DM_2000]

Don't drill with engine assembled, too much if a chip contamination risk.

Four or so wraps of teflon thread seal tape on the switch works, just be sure to keep the tape 2 threads away from the end of threads. You don't want tape fragments to enter the oiling system.

For info in general. The threads will be BSPT G-1/8" , the thread form and count is slightly different than NPT 1/8". BSPT in this size is slightly smaller than NPT but the two are close enough that, in this size, NPT in BSPT will " work " if needed.

Rather than type it app, go here for a chart. http://pipeandhose.com/?q=node%2F2