Replacing water pump. Should I change out oil pump while in there?

[Chris Capps]

I am replacing the water pump on my 2013 1500 due to a leak. The water pump on the blown engine had 186K on it. I have a factory-new replacement engine with about 33K on it. The truck has 216K on the odometer. I am trying to decide if I should upgrade the oil pump while I'm doing this. I've read a couple of places that the upgraded pumps do not solve the lifter oiling issues with these engines, but I admit, I am pretty ignorant on this subject. I would appreciate any advice. Thanks.

Chris

 

[GTyankee]

I know of a couple of Engine Rebuilders near my town.

I have driven by their shops a few times & say hello every now & then.

I catch them during time that they are not up to their elbows in solvent.

They usually have time for a few questions

You need to ask someone who works on engines often

 

[GTyankee]

AI answer :

For a 2013 Ram 5.7L engine, the preferred oil pump pressure is typically considered to be between 40 and 60 PSI at idle and should rise to around 50-70 PSI at operating temperature; however, always consult your vehicle's owner's manual for the most accurate specification for your specific model.

General rule of thumb: in other words a guestimate

you should have 10 PSI per every 1000 rpm, that is not specific to the HEMI

some say that 28 PSI is good at idle

 

[CanRebel]

Not sure what GT was babbling about.

But if you are replacing the engine, I would spend the money and time doing it now.
almost 200k, normal wear and tear would say do it now.

I would not put hellcat pump on, it's waste, zero proof it makes a difference. One thing you could look at is increase the idle rpm. Again no proof that makes difference either.
(you would need a tune like with HP, or Tune device, few around that do it)
But it does make some sense, at least if your truck has high idle times.

If it was me. replacing old engine with another 'used' one. I would replace lifters and/or cam as well. Or at very least inspect the replacement engine.

Low mileage doesn't always mean everything is good.

 

[Daw14]

Leave it be.

 

[Bigskyroadglide]

I am replacing the water pump on my 2013 1500 due to a leak. The water pump on the blown engine had 186K on it. I have a factory-new replacement engine with about 33K on it. The truck has 216K on the odometer. I am trying to decide if I should upgrade the oil pump while I'm doing this. I've read a couple of places that the upgraded pumps do not solve the lifter oiling issues with these engines, but I admit, I am pretty ignorant on this subject. I would appreciate any advice. Thanks.

Chris

No. Get a device that ups the idle rpm to 750 and leave it be.

I small hand held tuning device is all that is needed. You have an unlocked pcm. So your cost is about the same as a hellcat pump and will give you greater capabilities.

Look into something like that if you want to address oil pressure at idle

 

[Wild one]

I am replacing the water pump on my 2013 1500 due to a leak. The water pump on the blown engine had 186K on it. I have a factory-new replacement engine with about 33K on it. The truck has 216K on the odometer. I am trying to decide if I should upgrade the oil pump while I'm doing this. I've read a couple of places that the upgraded pumps do not solve the lifter oiling issues with these engines, but I admit, I am pretty ignorant on this subject. I would appreciate any advice. Thanks.

Chris

Water pump is an easy replacement,oil pump not so much. As stated above you're better off using a tuner to up your idle rpm to around 750 rpm.

 

[huntergreen]

I wouldn’t replace a perfectly fine oil pump.

 

[Chris Capps]

Thanks everyone!

 

[Trashy2121]

You are taking a tiny job and turning it into a small/medium job when pulling the timing cover, oil pan, alternator, possibly A/C compressor(?)etcetera... I wouldnt replace a water pump with 33k miles on it unless you see signs of failure.

 

[Sandevino]

Old grumpy diesel mechanic advice…. If you have to remove it to get to something else, put a new one in. If you don’t have to mess with it, leave it alone if it’s working fine.