[Roadsters] oil pressure guage

Eddie eddietude at socal.rr.com
Thu Aug 13 17:26:00 MDT 2009


Steve,

I actually dealt with this very issue, and you should read the following 
which was also posted on the 311 site. 

Oil pressure 2-5/8"-connected directly to block /after using the correct 
adapter./ The block is threaded for British Thread, (28 teeth per inch). 
Most aftermarket gauges come with American Thread fittings (27 teeth per 
inch) You can buy the correct adapter from 
http://www.mcmaster.com/#4860K141 McMaster-Carr for around $5.00. When I 
did mine I re-threaded the block for American standard threads. It is 
probably better result using the adapter.

Eddie


steven boortz wrote:
> hi everyone
> i'm trying to fix some things on my roadster before heading to the track again.  to that end, i'm thinking of replacing my stock oil pressure guage.  i had some funny readings the last time on track and wish to see what the real deal is.  i've heard mechanical guages are better for track use.  does anyone know what size is the hole in the block into which the sending unit is threaded?
> thank you in advance
> steve 675MIZU
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