FYI,
The oil pressure sender that fails frequently on Epics is not a Toyota part. I took my third failed one off and took it to the parts store. It is identical to a small block ford one from the 80's to the 90's, so I asked for one for an '87 GT Mustang. The idiots were out of SB Ford parts, I bought a generic Dodge (D100 P/U 84'-'94) one that is the same but the stalk is longer. Clearance is fine. It is 1/8" NPT threads. It will work, any sender with 1/8 NPT threads will work fine, the gauge will read whatever it is calibrated for. Who cares? Not me. Precise but not accurate, in control terms. I'm just tired of alarms. I know I gots enough oil pressure. If this one fails I will ground the wire which will make the gauge read full all the time, also eliminating alarms. I will test that, don't do it until I do but I'm 95% sure that's how the gauge works.
There is another plug on the oil filter housing, 5/16 allen head to remove 3/8 NPT into which will be inserted a mechanical oil pressure gauge. I will measure oil pressure at all RPM's and settle the debate FOREVER:) The gauge is out of a 60's musclecar and only goes to 80 psi, so I expect that it will peg under load. It was made in the 1960's USA so I know it won't pop. These engines kill new oil pressure senders because they are only built for 80 PSI. This Dodge one is supposedly good to 90 PSI
It's all standard imperial thread sizes, no metric. I though these might be Whitworth thread (1/8" like SAE but 1 more thread per inch) as is common in Asia, but no. Standard. Good thing, Whitworth to SAE works great. Once.
