Got new autometer gauges in and am wondering about the water psi gauge. I have it screwed into the SB side intake plug right next to tstat in my hp500. Is this a ideal spot because Im only getting about 5psi reading off gauge at speed but engine temps stay steady 150*. Had it out all day yesterday and no issues. Brand new impeller last week and all debris that could be found was removed in housing and oil cooler. Even took output hose off sea pump to check flow and seems good. Have a video if interested. What should "normal" reading be?

I also have an autometer water pressure gauge. I have the gauge tube T'd in just past the seawater pump, prior to my first cooler. I see just a few lbs at idle, and have seen as high as 30psi at 85mph. Generally cruising it's around 15-20psi. Hope that helps.

Thats what I was looking for yesterday! Got a link of that fitting? Thx!

Also whats ur oil temp at 3/4 to full throttle? Mine climbs to 140* and stays there till I bring it back down.

I have always seen water pressure taken from the side of the block. Closed cooling will see higher water pressure. If you are actually putting the pressure in the engine and not a heat exchanger, I don't like to put more than 20psi on intake gaskets.

With IMCO lower I have had to put relief valves in. I have seen exhaust alone make the biggest change in pressure depending on how high of flow the dump is.

Its stock setup and not closed cooling but I see ur point

Mine is closed cooling FYI. I run a 13 plate box oil cooler and I see 185 degrees at cruise.

This is what I used to T the autometer gauge in just past the seawater pump.

I don't like plastic threads! For $15 this is aluminum. If you run salt water you may want to put it on the maintenance replace schedule.

Just ordered one. Thx!

So when would anyone worry about oil temps? I put my sensor in bottom of pan by sump. I see 240* wot and wont climb. Ive never had an oil temp gauge in anything so need to judge wheres safe and wheres not.

That T fitting I showed before is anodized aluminum and has been holding up well for the past couple years for me, but I don't see salt water.

For oil temps typically you will often hear people say you don't want to run more than the 230-240 degree range. There's much debate on this topic however. Conventional engine oils start to oxidize in the 240-250 range.

I just read the reviews on this one. Many complain it does not have 1/8” npt threads, but m10 threads.
Did yours in fact have 1/8” npt ?