I ordered an adapter (10.0x1) from ACS.  This is the size I got off this list as to what is needed for the oil pressure gauge post.  Well... it doesn't fit, the threads are finer on the oil pressure gauge sender unit.  Sooo.. what is the real thread size for the Oil pressure gauge port on the 13B?  What is a good source for an adapter to go from the oil pressure port to pipe thread?

Wendell 

 

Hi Wendell, 

 

Sorry if I'm the one that steered you wrong on this.  I have a note that M10x1.0 fits, and I'm sure it did fit the ones I've tried.  There was at least one other case where one of my noted sized didn't fit someone else's housing, so it's possible they do change from one year to the next.  

 

Just to be sure, are you talking about the actual threaded hole in the rear housing?  Seems I recall that the stock arrangement used a straight fitting that extended out from the housing to the sender.  If I'm remembering that correctly, then the sender could be different from the threaded hole in the housing.

 

Good luck,

Rusty (just back from a family reunion)