Scott is correct and my memory was faulty.  The bad sensor that I took out
was 22 mm and the replacement was 24 mm.  I went and bought a 23 mm in
error and then discovered that I already had a 22 mm deep socket that
worked.  Went back to Lowes to get a 24 mm deep socket to install the new
sensor because the impact grade 24 that I had was too thick.

  The bad sensor with the 22 mm hex is so rusty that there are no numbers
remaining on the metal.  There appears to be a number: 50950 on the plastic
next to the terminal but it is hard to read.  Doesn't seem to google to
anything reasonable.

Larry A.
15/16 " = 23.8 mm

On Sun, Nov 25, 2012 at 6:54 PM, Scott Daniel - Turbovans <
scottdaniel@turbovans.com> wrote:

>  23mm is a very queer size and one of those should never be needed.  (
> though 24mm is used here and there for sure . )
>
> here's what I use ..
> a  1/2 inch drive  15/16th's socket ...which is nominally 24mm.
> You want one that's pretty thin to fit between pushrod tubes and OP sw.
>
> Mine isn't deep , but I can still use a half inch extension or ratchet ..
> it doesn't plug in all the way to the detent ball on the extension, but
> it gets the job done.
>
> scott
> www.turbovans.com
>
>  On 11/25/2012 3:13 PM, Larry Alofs wrote:
>
> I had this problem a while back.  I found that the size of the bad sensor
> was not the same as the replacement that I bought.  One of them was 23 mm
> and the other was either 22 or 24, but I can't remember which.  You need a
> deep socket.  I got mine at Lowes.
>   Find some calipers or something to reach in there.
>
> Larry A.
>
>
> On Sun, Nov 25, 2012 at 5:12 PM, Robert Clemmer <n51219@comcast.net> <n51219@comcast.net> wrote:
>
>
>  While I have the tin off to access the coolant drain bolt I'm going to add
> an oil pressure gauge.  Can any one tell me the size of the socket I need
> to
> locate to remove the oil pressure sender between the pushrod tubes?
>
>
>
> BobC
>
>
>
>