Quote Originally Posted by Hubert View Post
One thing I hesitate to question is how does that pressure switch work? Because I don't know exactly. Is it one wire one terminal or is it 2 hard to tell from pic looks like one wire and its suppose to ground to achieve ok signal. But looks like you have rubber for shock absorbtion in mounting filter head and again inbetween mount fixture and truck body so can it achieve good ground or is it open without vibrations or intermittents ???
Well, that's a good point - and a mighty keen eye, as well! Yes, it is a one-wire hookup. Yes, there is a rubber gasket between the mounts for vibration dampening. However, I think it ends up grounding through the SS lines. Now, I must say that this was not my intention. When I put this together I was well aware of how it's supposed to ground, but in the process I simply overlooked that step. Looks like I got lucky, 'cause the light on the dash seems to be working quite well - never any "intermittent" on time to indicate bad grounding. At night, it's awful bright! By the way, with the install of the new engine I cleaned all ground mounting points, replaced all ground straps with new/larger ones, and replaced all battery cables with 1-gauge. I even replaced the + cable that goes from the driver's battery to the main fuse box with a new cable about 2 sizes larger.

OK, here's some more detail. I used -8 hoses as I was concerned about -10 possibly causing a slight drop in oil pressure. To keep things simple, I'll refer to things as "DG" (the PSI reading at the "Dash Gauge") or "RL" ("Red Light" on the dash, wired to the remote sensor).

I just recently hooked this up with the install of the new engine (less than a week ago) - although I have been using the remote oil filter for some time, just not the oil pressure sensor. So, I don't have a comparison. What I can say, is the DG seems to operate the same as it did before. Meaning, how quickly the needle reacts/the extent of the high and low swings/what the PSI reads when the engine is cold or warm/how the needle reacts to RPM's. So it seems as the DG is operating exactly the same as before.

At cold idle, the DG reads close to 60. At warm idle, it reads about 25. So once the engine warms up, then the RL will come on at idle. After the engine is warm, if I increase the RPM's to about 900 the RL will go out. This corresponds to about 32 PSI on the DG. The RL will come on and off very quickly - faster than the needle swings.

By the way, the pressure sensor is actually located in an "IN" port on the filter mount as I'm intending the other "OUT" port for a bypass filter. However, my thought was there should still be the same pressure at the "IN" port since fluid takes the path of least resistance. I discussed this with a guy at my local injection shop and we both agreed. Does this make sense or am I missing something?

I guess what I need to do to really know for sure is hook up a mechanical gauge (as suggested above) where the sensor is? Is there a better place to hook up a gauge?

Sorry for the long reply!

This is the filter mount: http://static.summitracing.com/globa...prm-1793_w.jpg