Basically, it's a serious pain in the ass. You have to install a T off of the oil pressure port, but there really is no room around the port to just screw in a T there. I tried 3 different pipe-T designs and none worked (all of them *almost* worked).
The easiest way is to use a hose (steel-braided) to locate the T away from the oil filter housing. The port itself is 1/4NPT.
This is what I ended up using (in order from the port):
- 1/4NPT-4AN (male) adapter
- -4AN 14" braided hose w/ female hose ends
- another 1/4NPT-4AN (male) adapter
- 1/4NPT brass female T
- 1/4NPT-1/8NPT bushing (for example, this depends on sender)
The stock sensor attaches to one branch of the T, and then you may need a bushing adapter (e.g., 1/4NPT-1/8NPT bushing) to attach the Autometer sender to the other branch. Also, the adapter I put into the port was just a straight adapter and I had to bend the hose around a bit. So you'll probably want to get a 45-degree adapter for that one.
I got all of the parts I used from
Pegasus Autoracing (plumbing section, obviously). Make sure to get one of their preassembled hoses, I think it was their Size-4 brakeline hose or something. I originally thought I could assemble my own hose and it's a ridiculous pain in the ass. And don't forget to have plenty of teflon tape (plumber's tape) on hand.
Also, it may be possible to do this without removing the filter housing, but it is much easier to do removed. Look at the spin-on filter conversion how-to on 6tech for intructions on removing the filter housing. Be sure not to overtorque the housing bolts.
