Installing Mechical Oil Pressue Gauge

[dubhead74]

In the process of installing a mechical oil pressure gauge I noticed that my universal block doesnt have the oil pressure temp sending unit in it.I know I will need to tap a hole in the block to install the fitting for the nylon tubing.any suggestion or advice where to drill the hole?Is there any quess as to how much difference in psi is there between mounting the gauge upfront near the dash vs mounting it closer to the motor like maybe on the rear firewall?and yes I know if i do I wont be able to see the gauge while driving but I want a accurate reading of the pressure.I will decide mounting when I have an idea of the difference in mounting location.
I have searched some of the fourms to help but no luck on the search phrase needed to find out what I need.

Thank you

[Ian Godfrey]

I used an adapter in the oil pressure switch hole, a brass piece (VDO) with a thread in the side for the oil pressure switch and a thread in the end for the nylon hose fittings. I wanted the gauge on the dash so I fitted the hose to the block and ran it up to the front, run the engine until oil comes out the hose then fit it into the gauge. The response is instanious when the nylon hose is full of oil ('cos it won't compress). Gauge lag is caused by a hose full of air. Make sure you have a friend to turn the engine off when the oil comes through or it makes a big mess, guess how i know that

[Dale M.]

This question is up on "the sambs" also and has been responded to....

Dale