318 no oil pressure

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prowlersfish
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Re: 318 no oil pressure

Post by prowlersfish » Thu Sep 19, 2019 8:22 pm

mpjosh2001 wrote:
Thu Sep 19, 2019 8:08 pm
prowlersfish wrote:
Thu Sep 19, 2019 7:50 pm
Hollow push rods ? That sir is a part of your issue
Then how does the top end get oil? The chevy 350s, 396, and 496 all had them to oil the head. Does it come in through a port and you hope it runs all the way down to the back end?
Thats kind of how it works
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mikeandanne
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Re: 318 no oil pressure

Post by mikeandanne » Thu Sep 19, 2019 8:29 pm

That is it. The oil comes up thru the head to the rocker shaft which is hollow and then goes to each rocker, spring and pushrod from there. Those shafts have to be installed in the right orientation or the oil will be blocked, but that would just make the pressure higher below. Who sold you the parts for this repair. A known good gage on the engine should show pressure when pre-oiling or there is a problem.

I have seen pick ups in the pan with too small a clearance to the bottom, cause all sorts of problems and the previously mentioned things.
Last edited by mikeandanne on Thu Sep 19, 2019 8:34 pm, edited 1 time in total.
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mpjosh2001
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Re: 318 no oil pressure

Post by mpjosh2001 » Thu Sep 19, 2019 8:31 pm

I ordered them offline. I guess that's what I get for being a chevy guy working on a mopar.

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prowlersfish
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Re: 318 no oil pressure

Post by prowlersfish » Thu Sep 19, 2019 8:42 pm

I'm Chevy guy too . If you still have them put the old push rods back in ( and maybe the lifters ?)
TROJAN F36 Conv.
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mpjosh2001
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Re: 318 no oil pressure

Post by mpjosh2001 » Thu Sep 19, 2019 8:49 pm

prowlersfish wrote:
Thu Sep 19, 2019 8:42 pm
I'm Chevy guy too . If you still have them put the old push rods back in ( and maybe the lifters ?)
I've been dealing with this issue for over 2 months. I threw them all out shortly after I closed it all back up. I'll order some solid pushrods and get it done this weekend. Hopefully.

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Re: 318 no oil pressure

Post by mikeandanne » Fri Sep 20, 2019 11:40 am

mpjosh2001 wrote:
Thu Sep 19, 2019 6:49 pm
The pump spun freely before I installed it. The new lifters were the same size as the old ones.
So another issue to cross off the list that may help, did you measure the lifter diameter with a micrometer or caliper and compare to the old ones before installing. Like I said before some blocks had an oversize lifter bore and require lifters to fit, somewhere around .008", please don't quote as its been a long time.
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Re: 318 no oil pressure

Post by mpjosh2001 » Fri Sep 20, 2019 3:42 pm

Put solid rods in. Still no pressure and it sounds worse.

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Re: 318 no oil pressure

Post by mpjosh2001 » Fri Sep 20, 2019 5:47 pm

Is the oil pump different for marine vs automotive? This is a reverse rotation engine. If it is different, can someone point me in the right direction. I put a milling 72hv on it.

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prowlersfish
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Re: 318 no oil pressure

Post by prowlersfish » Fri Sep 20, 2019 5:54 pm

mpjosh2001 wrote:
Fri Sep 20, 2019 3:42 pm
Put solid rods in. Still no pressure and it sounds worse.

If they sold you the wrong push rods I really have to wonder about the lifters . Also the the pump . If it uses a gasket ( I dont recall ) is it on right and no old gasket .
TROJAN F36 Conv.
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Re: 318 no oil pressure

Post by mpjosh2001 » Fri Sep 20, 2019 5:57 pm

It's not that someone sold me the wrong stuff, I ordered the wrong stuff. I didnt talk to anyone, just searched chrysler 318 and ordered what I thought I needed. There is a gasket on the pump. The surface was cleaned and bolts torqued to spec.

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Re: 318 no oil pressure

Post by mikeandanne » Fri Sep 20, 2019 7:05 pm

mpjosh2001 wrote:
Fri Sep 20, 2019 5:57 pm
It's not that someone sold me the wrong stuff, I ordered the wrong stuff. I didnt talk to anyone, just searched chrysler 318 and ordered what I thought I needed. There is a gasket on the pump. The surface was cleaned and bolts torqued to spec.
Have you got the part number for the lifters handy ?

The Melling pumps are the ones, M-72 and the M-72HV which I believe you got, you don't really need a high volume pump for an old engine like you have, a standard will work just fine. But you only lost pressure after the lifter change according to your earlier posts, so really the pump was not an issue but could be now if not fitted to the pan correctly. Good luck man, I am out of ideas for now.
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Re: 318 no oil pressure

Post by mpjosh2001 » Fri Sep 20, 2019 7:15 pm

mikeandanne wrote:
Fri Sep 20, 2019 7:05 pm

Have you got the part number for the lifters handy ?

The Melling pumps are the ones, M-72 and the M-72HV which I believe you got, you don't really need a high volume pump for an old engine like you have, a standard will work just fine. But you only lost pressure after the lifter change according to your earlier posts, so really the pump was not an issue but could be now if not fitted to the pan correctly. Good luck man, I am out of ideas for now.
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prowlersfish
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Re: 318 no oil pressure

Post by prowlersfish » Sat Sep 21, 2019 8:57 am

No clue on the quality or fit of the lifters Sealed powers part # is HT 2011 $4.29 at Avance $9.00 amazon . Mike said something about possible over size needed ? I am not mopar guy so not sure .

So something I have not brought up . Why did you feel the need to put the lifters and hollow push rods in to improve oil flow ? was there a issue before ?

How bad did it over heat ? coolant or water in the oil ? Is it possible the bearings got wiped out ? How long has it been run with out pressure ?
TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
2009 TROJAN RENDEZVOUS
Port Kinsale 2010 & 2011. Solomons get together 2011.

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Re: 318 no oil pressure

Post by mpjosh2001 » Sat Sep 21, 2019 9:20 am

prowlersfish wrote:
Sat Sep 21, 2019 8:57 am

So something I have not brought up . Why did you feel the need to put the lifters and hollow push rods in to improve oil flow ? was there a issue before ?

How bad did it over heat ? coolant or water in the oil ? Is it possible the bearings got wiped out ? How long has it been run with out pressure ?
Things were running fine earlier in the season. Went out and it was smoking really bad. Checked oil and found water in the oil. Pulled the heads and had them checked out. They were warped .007 and cracked between all the valves.

There was no oil issue before. Me being a chevy guy, I've always dealt with hollow rods. So, I swapped them out thinking it would make things better. It didnt. I swapped solid rods back into it yesterday and it didnt improve. I'm getting only 6 psi. I'm thinking about swapping the lifters out, but gotta wait until payday. I don't know what else to do. I'm about ready to blow it in place.

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prowlersfish
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Re: 318 no oil pressure

Post by prowlersfish » Sat Sep 21, 2019 9:43 am

Are you raw water cooled or do you have coolant ?
TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
2009 TROJAN RENDEZVOUS
Port Kinsale 2010 & 2011. Solomons get together 2011.

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