Oil pump recommendation please
Oil pump recommendation please Hi
I am freshening up my 5.3 in my jet boat and will be replacing the oil pump. I have been running an ls6 pump and is been okay so far
I want to go to a Melling. And would love some more psi over stock
My wot rpm is about 7200. I want a recommendation on which pump to run. I am worried about running the pump dry.
I run the ls3 camaro oil pan and run a touch over 8 quarts of oil
Thank you
I am freshening up my 5.3 in my jet boat and will be replacing the oil pump. I have been running an ls6 pump and is been okay so far
I want to go to a Melling. And would love some more psi over stock
My wot rpm is about 7200. I want a recommendation on which pump to run. I am worried about running the pump dry.
I run the ls3 camaro oil pan and run a touch over 8 quarts of oil
Thank you
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From: Coast of San Mateo County Between Pacifica & HMB
I would prioritize porting to prevent cavitation/aeration above 6500 rpm
especially sustained, over more psi as long as I had 20 psi hot idle &
50 psi minimums @ 7200 rpm.
especially sustained, over more psi as long as I had 20 psi hot idle &
50 psi minimums @ 7200 rpm.
Melling high pressure standard volume.
You can run restricted orifice pushrods which can sort of act as a pseudo priority main oiling by putting less oil up top. Not the same, but a step in the right direction.
You can run restricted orifice pushrods which can sort of act as a pseudo priority main oiling by putting less oil up top. Not the same, but a step in the right direction.
Hi Everyone,
thank you for the info and leads. I am leaning towards the Melling Standard Volume/High Pressure pump part number 10295
A little more info about the setup now that the 4th of July beers have worn off
Its a 5.3 block, 3.78" bore. Twin 72mm turbos that also need to be fed.
I am refreshing because the thing ate all the bearings up, it seems to be oil starvation. It appears as if the LS3 Style Relief valve in the pan stuck and caused an oil psi drop. Also, i am feeding the turbos off of the plate above the filter and from my understanding thats a bad practice? I will be changing my feed lines to the top port up by the intake and just run the oil psi gauge sender off of the plate above the oil filter.
I am intrigued by the suggestion of restricted orifice pushrods. Does anyone have any more information on them? I do worry about not having enough oil up top to the rockers/springs with them.
Thanks
thank you for the info and leads. I am leaning towards the Melling Standard Volume/High Pressure pump part number 10295
A little more info about the setup now that the 4th of July beers have worn off
Its a 5.3 block, 3.78" bore. Twin 72mm turbos that also need to be fed.
I am refreshing because the thing ate all the bearings up, it seems to be oil starvation. It appears as if the LS3 Style Relief valve in the pan stuck and caused an oil psi drop. Also, i am feeding the turbos off of the plate above the filter and from my understanding thats a bad practice? I will be changing my feed lines to the top port up by the intake and just run the oil psi gauge sender off of the plate above the oil filter.
I am intrigued by the suggestion of restricted orifice pushrods. Does anyone have any more information on them? I do worry about not having enough oil up top to the rockers/springs with them.
Thanks
Last edited by steves86ta; Jul 8, 2019 at 04:18 PM.
Hi Everyone,
thank you for the info and leads. I am leaning towards the Melling Standard Volume/High Pressure pump part number 10295
A little more info about the setup now that the 4th of July beers have worn off
Its a 5.3 block, 3.8" bore. Twin 72mm turbos that also need to be fed.
I am refreshing because the thing ate all the bearings up, it seems to be oil starvation. It appears as if the LS3 Style Relief valve in the pan stuck and caused an oil psi drop. Also, i am feeding the turbos off of the plate above the filter and from my understanding thats a bad practice? I will be changing my feed lines to the top port up by the intake and just run the oil psi gauge sender off of the plate above the oil filter.
I am intrigued by the suggestion of restricted orifice pushrods. Does anyone have any more information on them? I do worry about not having enough oil up top to the rockers/springs with them.
Thanks
thank you for the info and leads. I am leaning towards the Melling Standard Volume/High Pressure pump part number 10295
A little more info about the setup now that the 4th of July beers have worn off
Its a 5.3 block, 3.8" bore. Twin 72mm turbos that also need to be fed.
I am refreshing because the thing ate all the bearings up, it seems to be oil starvation. It appears as if the LS3 Style Relief valve in the pan stuck and caused an oil psi drop. Also, i am feeding the turbos off of the plate above the filter and from my understanding thats a bad practice? I will be changing my feed lines to the top port up by the intake and just run the oil psi gauge sender off of the plate above the oil filter.
I am intrigued by the suggestion of restricted orifice pushrods. Does anyone have any more information on them? I do worry about not having enough oil up top to the rockers/springs with them.
Thanks
I see both sides of the restricted pushrod argument. I personally don’t like them, because number one, from what I’ve observed, the LS engines don’t puddle oil up top like sbc engines did. Far better drain back with the LS design up there, and number two, oil is the only thing cooling the valve springs, so you really need the springs taking a shower up there.
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My advice here would be that you make sure you figure out exactly what happened with the bearings issue. Don’t assume anything. Turbos might be heating the oil up too high. Are you positive that the relief valve stuck in the pan? Can you post pictures of the bad bearings? Darkening or black coloration indicates heat. Do you run an oil temp gauge?
I see both sides of the restricted pushrod argument. I personally don’t like them, because number one, from what I’ve observed, the LS engines don’t puddle oil up top like sbc engines did. Far better drain back with the LS design up there, and number two, oil is the only thing cooling the valve springs, so you really need the springs taking a shower up there.
I see both sides of the restricted pushrod argument. I personally don’t like them, because number one, from what I’ve observed, the LS engines don’t puddle oil up top like sbc engines did. Far better drain back with the LS design up there, and number two, oil is the only thing cooling the valve springs, so you really need the springs taking a shower up there.
I do run an oil temp gauge, and temps were fine until bearings spun. All the info is here https://ls1tech.com/forums/generatio...d-engines.html
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Verdad Gallardo I just made a post with all the pictures and info.
I do run an oil temp gauge, and temps were fine until bearings spun. All the info is here https://ls1tech.com/forums/generatio...d-engines.html
I do run an oil temp gauge, and temps were fine until bearings spun. All the info is here https://ls1tech.com/forums/generatio...d-engines.html
Just saw that post and came back over to tell you I saw your info. Bearing/oil heat will usually mark the journals also with darkening, not just the bearing only. But then again, the dark oil sludge left in the pan looks like the oil got really hot. The common denominator here points to the stupid relief valve in the pan. This stinks man.