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Correct. I ordered an adapter from somewhere online to go from 1/8" BSPT to 1/8" NPT.
I've actually used this port to feed the PSRU and have a pressure port on the BIG oil port on the bottom of the rear iron.
Dave
Barry Gardner wrote:
Doug,
My recollection is that this oil pressure port is a wierd one called 1/8" BSPT. ("British standard pipe thread", I think).
See:
http://autotruckpart.com/product.php?productid=316505
That seems to be corroborated by this thread on Grassroots Motorsports:
http://grassrootsmotorsports.com/board/viewtopic.php?pid=44720
Maybe someone else can confirm. I bought an adapter and this is what I recall.
Barry Gardner
Wheaton, IL
----- Original Message -----
*From:* DLOMHEIM@aol.com <mailto:DLOMHEIM@aol.com>
*To:* Rotary motors in aircraft <mailto:flyrotary@lancaironline.net>
*Sent:* Thursday, November 01, 2007 8:19 PM
*Subject:* [FlyRotary] Oil Pressure Sender Placement
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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