My current intake manifold has 4 waters ports. 1/2 NPT on each corner.. the rear starboard side has the water pressure sender.. The rear port side is pluged.. The front starboard side has the warning buzzer.. The front port side has the water temp sender..
I have seen people running hoses from one ore mores to one (or more) ports. What advantage does that have??? Front to back? Side side??

I have always had a strange issue.. My buzzer "used" to be on the opposite side.. Where the temp sender is now.. BUT.. kept going off.. temp sender would read @130 or so.. switched them.. temp says 170 (cycles due to crossover) and buzzer is never heard from.. Why the difference in water temp from side to side??

thanks
John

Some manifolds can trap an air pocket at the rear of the manifold. The idea is to allow the air to bleed out by running pressure relief line to a forward port. Another method is to use a small bleed hose from the rear ports and dump the water/air over board.

Ben
I found a thread on that.. I would like NOT to drill anymore into the back.. Running a line from the front to rear is easy.. Some 8an fittings.. but I am confused on how to mount the sensors? I was hoping to see someone take a pic of their setup...

Put a "t" in when you're rigging the manifold and you should be fine. I can't post a pic of mine cause I dump overboard but for my overboard dump, I ran "2" #6's lines into a tri-y fitting and a single #6 overboard.

I wouldn't go as large as #8's, I'd use #4 or #6 hose. You're relieving air pockets, not changing flow pattern. My .02 in what I learned with mine...

Do I run side to side, or back to front???

Panther.. Re-read your post..
you are saying the "T" installs into the intake.. The "T" consists of 3 ends.. 1 end is 1/2 NPT for the intake.. One end is 6an to the other "T".. the other end of the "T" is a female thead.. 3/8 NPT for my sensor.. right????

I run 2 #6 lines from the back to the front. 1 on each side. If yuo want, you can T the back and run it into 1 of the front holes. Or you can run the line back into the neck, or into one of the exhaust lines.

Your water pressure should allwaus be installed as close to the pump output as possible to maintain accuracy. Your water temp needs to be on the top in front of the intake as this is where the water exits. What other sensors do you have??

Water temp diff from side to side usually means you have a clog somewhere.

Pull your block drains out of the bottom of the block and flush the engine out. Make sure there is no sediment in there.

You can use a regular old temp gun to check this. Warm the engine to operating temp and check each head.

yup, 1/2" male npt to the intake, other two ends are female. Install the sensor in one and connect the hose to the other.

On mine I have 1/2" male NPT, to two female 1/2" npts. Then a 1/2" npt sensor in one hole and a male 1/2" npt to -6 fitting in the other.

Stainless looks better but you can also get it in brass, whatever your fancy is!