oil pressure gauge

[DF5152]

which port on top of the filter is best to use for an oil pressure gauge?

 

[jwilliams3]

Either one, they are both on the same channel of oil flow.

 

[nickleinonen]

which ever is easier to get access too... you can also get pressure from the lube oil gallery in the block. the left side of engine, there are 2 accessable m10x1. 0 orb ports [one below/behind cp3, one above ecm]. reads a little lower than the filter head. . [and leaves the filter head open for a lube oil temp sensor]

 

[DaveHess]

The ports on the left side of the block, do they have what looks like a hex or allen wrench look to them???

 

[srichard]

which ever is easier to get access too... you can also get pressure from the lube oil gallery in the block. the left side of engine, there are 2 accessable m10x1. 0 orb ports [one below/behind cp3, one above ecm]. reads a little lower than the filter head. . [and leaves the filter head open for a lube oil temp sensor]

is there any reason why you couldn't use on of the filter ports for an oil temp and the other for an oil pressure?

 

[nickleinonen]

is there any reason why you couldn't use on of the filter ports for an oil temp and the other for an oil pressure?

nope. . just that the inner plug is sorta hard to get at [hard coolent(?) line blocking it]... i don't think using a tee fitting to get both off one port is a good idea unless your sending unit for the temp has a long probe tip

he ports on the left side of the block, do they have what looks like a hex or allen wrench look to them???

yep. it is a 5mm allen key. there are 4 ports on the left side of the block. 2 are m10x1. 0. both accessable. 2 are m14x1. 5. one occupied by stock switch, one blocked by a bracket for the lift pump/filter arrangement.

 

[DaveHess]

When you pull one of the M10x1. 0 with the truck not running, will oil spill from the hole? I am guessing that with the truck running, oil flows past these ports and therefore would be better for oil temp. Where as the port at the top of the oil filter would be better for oil pressure considering the flow is somewhat limited. Any other thoughts or considerations? Thanks Nickelinonen for your help!

 

[rbattelle]

When you pull one of the M10x1. 0 with the truck not running, will oil spill from the hole? I am guessing that with the truck running, oil flows past these ports and therefore would be better for oil temp. Where as the port at the top of the oil filter would be better for oil pressure considering the flow is somewhat limited. Any other thoughts or considerations? Thanks Nickelinonen for your help!

Oil doesn't come out the block port with the engine off. It's the main oil rifle, and I would strongly urge against installing a temperature probe in there - the presence of the probe body would restrict flow in that galley to the demise of your engine. [Besides that, it's unlikely that the port is large enough to accept a oil temp probe]. You'll need a sealing washer or o-ring for the sending unit for the block port. Whichever port you use I'd recommend an isolator line to help improve the sending unit life.



-Ryan

 

[jwilliams3]

Good advice Ryan!

 

[nickleinonen]

am guessing that with the truck running, oil flows past these ports and therefore would be better for oil temp. Where as the port at the top of the oil filter would be better for oil pressure considering the flow is somewhat limited.

exact oppiset is what i think is better... the filter pad for your lube oil temp as you can see what the oil cooler is doing, and the pressure from the gallery is closer to what your bearings are seeing pressure as there is more pressure drop once you have fed the mains [i am 90% sure that gallery is fed off the cam bearings]

 

[jwilliams3]

There is only one and sometimes 2 cam bearing (bushings) in the 3rd gen engine.



As I remember the oil supply to the cam comes off of the crank journal area.

 

[nickleinonen]

There is only one and sometimes 2 cam bearing (bushings) in the 3rd gen engine.

true, there is a bushing at the front and rear journals of the cam. . but the rest of the journals are iron block to steel cam with the lube oil floating them apart. not sure why cummins chose to do it this way [i would rather see full bushings in all the journals for the cam support bearings]

 

[jwilliams3]

Cost... .



Yeah, Cam bearings in every journal would rock!!