Help with low oil pressure

[moparmike68]

Thanks, I have been a little apprehensive about changing to the hv pump for that reason. I initially bought a larger pan from 440 source but it didn’t work. It was taller along the shallow part of the pan (also the thickness of the 2 gaskets and windage tray may have pushed the pan even farther down close to the drag link bar), and my drag link rubbed on the panso I think returned it or sold it. Went back with the stock size pan.

Hey all I have another observation I would like everyone’s input on. I just did a little experiment. I had another 402 stock pan in my parts stash and I thought I would see if you could put more oil in the pan than the factory spec of 4 QTs. I wondered if I could put more oil in the pan, then there would be more oil”available “ to fend off oil starvation later on if I were to switch to a high volume pump. I Put 5 QTs of water in the pan and there is still a 1/2 to 3/4” space left between the oil and the rim of the pan. Since I have a windage tray installed, the extra oil would still not be whipped up by the crank assembly correct.? Just thought i would throw that out there. What do you think?

 

[moparmike68]

I ran straight 50w cenpeco and schaffers in my dodge ram pulling truck with a 5.9 Cummins. All bearing tolerances were set to max tolerance. It carried 70lbs at startup and 40lbs at idle, when warm. That was brand new oil. I would start loosing pressure after a couple runs cause the diesel fuel would start diluting the oil. It might be worth a shot like the gentleman have mentioned above. 5-6 quarts of 50w oil isn’t going to cost you that much vs. a tear down.

Thanks

 

[rickseeman]

That's why I said the 440 Source drag link. If it "sucks your pan dry".

 

[moparmike68]

That's why I said the 440 Source drag link. If it "sucks your pan dry".

That's why I said the 440 Source drag link. If it "sucks your pan dry".

Yeah but back when I ordered stuff from 440 source several things didn’t fit. Like I ordered a pan and new pick up for a 383 and when I received it neither one would fit correctly, so I just went back with the stock used pan and pick up. I was not impressed with 440 source.

 

[rickseeman]

A Hemi pan is supposed to fit an e-body since they came in there. I don't know if a Milodon pan would fit better. I think we've all seen people that had drag links that rubbed the pan so I understand. Maybe you should try the HV pump and see if it all works out for you. I really don't think it's going to "suck the pan dry". When it's idling hot it should give you the pressure you want. When you get the HV pump put your pink spring in it and it will give 50-55 max psi. You're not going to Bonneville.

 

[moparmike68]

A Hemi pan is supposed to fit an e-body since they came in there. I don't know if a Milodon pan would fit better. I think we've all seen people that had drag links that rubbed the pan so I understand. Maybe you should try the HV pump and see if it all works out for you. I really don't think it's going to "suck the pan dry". When it's idling hot it should give you the pressure you want. When you get the HV pump put your pink spring in it and it will give 50-55 max psi. You're not going to Bonneville.

True

 

[Ricks72Chlgr440]

A Hemi pan is supposed to fit an e-body since they came in there. I don't know if a Milodon pan would fit better. I think we've all seen people that had drag links that rubbed the pan so I understand. Maybe you should try the HV pump and see if it all works out for you. I really don't think it's going to "suck the pan dry". When it's idling hot it should give you the pressure you want. When you get the HV pump put your pink spring in it and it will give 50-55 max psi. You're not going to Bonneville.

Rick,

I am using a roller cam / roller rockers with a mellonized distributor drive shaft on my RB 512 stroker from 440 Source. Think I got the shaft from Hughes. They said not to use HV pumps because it causes too much load on the shaft. I have the black spring in a stock style pump. Hot pressure at idle is about 15 when using 15w/40 oil. What are your thoughts?

I had a non-stroker 440 with this same roller cam/lifters and a bronze drive shaft and within about 1500 miles the dist shaft was eaten up and there were bronze shaving throughout the engine. That's why I went with the mellonized one.

 

[rickseeman]

I think they're crazy. Sounds like something they would say if someone called and their mellonized gear went out. They would blame it on the HV pump. There must not be much load on it. When I prime a cold engine with a HV pump and cold 40 wt oil to 80 psi it barely stresses my Snap On battery drill.

 

[moparmike68]

Rick,

I am using a roller cam / roller rockers with a mellonized distributor drive shaft on my RB 512 stroker from 440 Source. Think I got the shaft from Hughes. They said not to use HV pumps because it causes too much load on the shaft. I have the black spring in a stock style pump. Hot pressure at idle is about 15 when using 15w/40 oil. What are your thoughts?

I had a non-stroker 440 with this same roller cam/lifters and a bronze drive shaft and within about 1500 miles the dist shaft was eaten up and there were bronze shaving throughout the engine. That's why I went with the mellonized one.

Yeah the jury is still out on the hv pump and Im hoping that the thicker 10w40 oil will get me where I need to be. I think I would be happy with 15 psi at hot idle/ in drive and a stop light.

 

[moparlee]

True

My 383 '71 Challenger R/T has the 6 qt Hemi pan on it with all factory stock suspension and the pan clears the steering link no problem. This was a factory ordered car for me by my dealership and for some reason it came from Ma Mopar with the Hemi pan.

 

[540HemiCuda]

Thanks, I have been a little apprehensive about changing to the hv pump for that reason. I initially bought a larger pan from 440 source but it didn’t work. It was taller along the shallow part of the pan (also the thickness of the 2 gaskets and windage tray may have pushed the pan even farther down close to the drag link bar), and my drag link rubbed on the panso I think returned it or sold it. Went back with the stock size pan.

Rubbing the drag link is common. I usually just heat up the pitman arm and bend it down a bit. Requires that the toe be reset, but sometimes you just gotta do what cha gotta do. Lots of choices to address your problem. Just go with what you feel fits you best.

 

[Xcudame]

@moparmike68 I just built a 1970 industrial 413 with my son last year and the 440 Source pickup and 6 quart pan fit just fine with no problems. And we used the Jegs windage tray/gasket.

Also, the 402 pan will hold five quarts, but remember when it's running one quart is in the oiling system (filter and galleries). If you run 6 quarts total with a 402 pan and windage tray, the crankshaft will froth the oil.

Call 440 Source if you have problems with their products. They listen to us Mopar customers.

 

[moparmike68]

@moparmike68 I just built a 1970 industrial 413 with my son last year and the 440 Source pickup and 6 quart pan fit just fine with no problems. And we used the Jegs windage tray/gasket.

Also, the 402 pan will hold five quarts, but remember when it's running one quart is in the oiling system (filter and galleries). If you run 6 quarts total with a 402 pan and windage tray, the crankshaft will froth the oil.

Call 440 Source if you have problems with their products. They listen to us Mopar customers.

Thanks

 

[moparmike68]

Thanks

 

[moparmike68]

Has anyone ever had an issue with the two ports on the rear of the block(383)not having the same pressure? In other words, could one port be allowing more or less pressure than the other port? I was wondering if I had low pressure reading on a gauge attached to one port, if it might show a different pressure if the gauge line was swapped to the other port. I’m grasping at straws here and trying to think of things that could be causing low oil pressure other than the obvious possibilities.

 

[rickseeman]

Has anyone ever had an issue with the two ports on the rear of the block(383)not having the same pressure? In other words, could one port be allowing more or less pressure than the other port? I was wondering if I had low pressure reading on a gauge attached to one port, if it might show a different pressure if the gauge line was swapped to the other port. I’m grasping at straws here and trying to think of things that could be causing low oil pressure other than the obvious possibilities.

Those 2 ports are large drilled passageways.