As John Slade mentioned, brass adapter  with the sender hanging on the end of it is likely to crack. Also my oil press. sender installed on the engine failed in 10 hrs. There are very tiney moving parts and wires inside that do not like being shaken for hours. The firewall is a better place for them.
Buly


-------------- Original message ----------------------
From: hoursaway1@comcast.net
>
> Doug; Believe it or not I found an adapater kit at Auto Zone, small bag of brass
> adapter fittings changeing many diff. threads to NPT, located hanging in the
> elect. shelf of the store (no one in the store will know what you are talking
> about, have to look around yourself).  David,  RV-6A Rotary  ((when computers
> come back from updates in FL. will do first eng. start, not much remaining to
> install,)) :>)
>
> -------------- Original message --------------
> From: DLOMHEIM@aol.com
>
> My 13B seems to have pulled oil pressure from a small port next to the oil
> filter plate which supplies the oil to Tracy's PSRU.  A VDO pressure sender will
> fit into the hole but will not thread so I must assume this was never tapped out
> for NPT and is still in metric.  In looking at a picture of the engine before I
> removed all the senders, it shows a small brass fitting on the end of the
> pressure sender but I can't find that small brass piece anywhere and was
> therefore wondering what the sock thread size so as to get something to adapt to
> my VDO sending unit?  Thanks for any help.
>
> Doug Lomheim
> RV-9A, 13B, FWF
> OK City, OK
>
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