Dave Leonard tells me his VDO pressure sensors are not living more
 than 20
 hours so he is replacing them with a mechanical oil pressure gage.
 Needless to say the oil pressure is critical to the life of the engine as
 well as Tracy's gear box.

 These are AN -3 brake lines but they will work as a reliable and
 robust oil
 pressure gage connections for  a MC Master
 1.5 inch OD oil pressure gage. Yes one and a half inch outside
 diameter oil
 pressure gage.

 https://www.pegasusautoracing.com/productselection.asp?Product=3

 You will need a jic steel NPT 1/8th pipe adapter to the gage and to
 the -4
 an line.

 We are not happy with the automotive oil pressure gage and it's nylon
 lines
 that are in there now.

 Paul Lamar
 --
 Paul,
 Are you familiar with the trouble almost ALL 3rd gen 13Brew engines
 had with
 their oil pressure senders/gauges? I've had 4 fail. Remote mounting is
 one
 answer (with good grounds). Also aftermarket senders don't seem to be
 up to
 the start up pressure and leak soon after new.  I always have a back
 up oil
 pressure gauge in my rew's.
 Also, the threads on the block are something odd.
 Marc Wiese

 I think those threads are 1/8th NPT. That seems to work.
 Larry Child looked at the sender and instantly recognized 1/8th NPT.
 I assumed it was metric but no.... it is 1/8th NPT.

 The high start up pressure was the reason I choose a 200 PSI
 gage.

 Paul Lamar


IIRC, some RX7s use a 1/8" BSPT or 1/8" JSPT (can't remember), it is
slightly different than 1/8" npt.
I can't remember if the BREW is the same.  It may have changed at some
point.

Cheers
Cary
----------------------------------
3rd gens -rewtt- (93-2000) for some reason DID use the British Standard Pipe
threads! You are correct! 1/8 npt will wobble a bit if threaded in.
Marc

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