Re: Friends 'low' oil psi 340, only about 10,000miles
[Re: Mopar72Man]
#31737
10/22/06 10:20 PM
10/22/06 10:20 PM
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"Bosch This is yet another Champion Labs filter that is sold at AutoZone. I am not a big fan of Champion filters. They seem flimsy on the inside to me." http://minimopar.knizefamily.net/oilfilters.html
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Re: Friends 'low' oil psi 340, only about 10,000miles
[Re: Mopar72Man]
#31739
10/22/06 10:54 PM
10/22/06 10:54 PM
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I'd heard that about alot of the newer oils especially with solid cams, I've always used valvoline Durablend and I've had no issues
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Re: Friends 'low' oil psi 340, only about 10,000miles
[Re: Mopar72Man]
#31741
10/23/06 12:27 PM
10/23/06 12:27 PM
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Joined: Feb 2003
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Quote:
hot cruise is about 40 (~3,000rpm) and might get up to 50 if he runs it through the gears.
10PSI per thousand rpm is fine. but even on a street car, this is not enough for me. I hit 5K in my dump run pickup with my stock 400 on highway on ramps. Change the oil and filter first, get a hand help diagnostic gage too. If it changes at all in the wrong direction, I wouldnt hesitate to pull it.
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
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Re: Friends 'low' oil psi 340, only about 10,000miles
[Re: dogdays]
#31744
10/23/06 07:55 PM
10/23/06 07:55 PM
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Joined: Apr 2006
Posts: 28 georgia
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I have read where Lucas can cause the oil to foam in the crankcase. air does not make a good lube. experiments can be seen at bobtheoilguy.com also claims Fram filters are junk. I lost 8-10lbs. using a Fram.
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Re: Friends 'low' oil psi 340, only about 10,000miles
[Re: Mopar72Man]
#31746
01/06/07 12:09 PM
01/06/07 12:09 PM
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Joined: Jan 2003
Posts: 9,982 Ansonia, CT
CJK440
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Quote:
Issue still remains, in re-reading this reply.
Quote:
First thing I'd do is try another gauge; then cut the oil filter open and inspect the element for bearing material. Could be bearing clearances too large, oil being aerated, maybe the filter going into bypass. Sounds like the oil has to be cold (thicker) or the pump spun up to maintain oil pressure, which sounds like an internal (pressure) leak. It doesn't sound fatal, but it doesn't sound right, either; mine have always idled hot with at least 30PSI with a stock pump and regardless of mileage.
i'm wondering why if when the motor was first fired. At idle it held about 30lbs hot. Not its dwindled down to 15.
Any other suggestions? Could a faulty pump/spring be the culprit? He has a oil idiot light for 15psi and a autometer gauge. light comes on and the gauge shows 15 at hot idle. so we dont think its the gauges fault. Anything else we can check besides pulling it apart? Its been through a couple oil changes with no change in pressure.
thanks.
If it changed pressure from when it first was run to now, then there is something wrong.
2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
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Re: Friends 'low' oil psi 340, only about 10,000miles
[Re: CJK440]
#31747
01/06/07 12:12 PM
01/06/07 12:12 PM
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Joined: May 2005
Posts: 803 Oklahoma
Mopar72Man
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Quote:
Quote:
Issue still remains, in re-reading this reply.
Quote:
First thing I'd do is try another gauge; then cut the oil filter open and inspect the element for bearing material. Could be bearing clearances too large, oil being aerated, maybe the filter going into bypass. Sounds like the oil has to be cold (thicker) or the pump spun up to maintain oil pressure, which sounds like an internal (pressure) leak. It doesn't sound fatal, but it doesn't sound right, either; mine have always idled hot with at least 30PSI with a stock pump and regardless of mileage.
i'm wondering why if when the motor was first fired. At idle it held about 30lbs hot. Not its dwindled down to 15.
Any other suggestions? Could a faulty pump/spring be the culprit? He has a oil idiot light for 15psi and a autometer gauge. light comes on and the gauge shows 15 at hot idle. so we dont think its the gauges fault. Anything else we can check besides pulling it apart? Its been through a couple oil changes with no change in pressure.
thanks.
If it changed pressure from when it first was run to now, then there is something wrong.
ok so how do we diagnose everything besides pulling it out and apart? meaning we hate to rip it out and find it was a worn pump drive or something. if also anyone could give us a breakdown of possibilites
72 Challenger - will be sublime, little 340 904, 8 3/4" - Under Construction
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Re: Friends 'low' oil psi 340, only about 10,000miles
[Re: bonefish]
#31749
01/06/07 05:45 PM
01/06/07 05:45 PM
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The 340 currently in my car does the same thing. About 10-15 at idle when hot. If you step on it it can get all the way back up at 50, and get about 35-40 at cruise. Around 60 when its cold. Been this way for 6 years, still runs ok. Since the day i got it, it has been ticking like its got a wiped cam or lifter, and has this same oil pressure.
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Re: Friends 'low' oil psi 340, only about 10,000miles
[Re: CJK440]
#31751
01/08/07 12:36 PM
01/08/07 12:36 PM
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Joined: Jan 2003
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dogdays
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The pump drive either works or it doesn't. If it doesn't, you find out about it in a hurry and drag the car home because the engine is locked up.
My '93 Sub has 244,000 miles. When I start it up cold, the oil pressure will be about 35 psi at idle. When it warms up thoroughly, the oil pressure is around 10 psi at idle. get just a little off idle and the pressure comes up to 20, and it stabilizes at around 50 at cruise. I think what you have been describing is an engine set up with a little extra clearance in the bearings. The oil pump delivery is almost exactly proportional to rpm. At idle the pump can pump its entire output through the bearings while developing a pressure of whatever you said, 10 psi or something like that. As the engine speeds up, the oil volume delivered also increases and now you have "normal" oil pressure.
If you want to tear down the engine do it. Or, drive the car. It has gone 10K miles already and not locked up, so it must be doing something right.
You could also add a couple of bottles of special super-thick oil goop like Wynn's Motor Honey to get the viscosity up.
R.
A high-volume pump may be the answer if you can get the pan off without yanking the engine. If you do this put in a new high-quality oil pump drive.
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Re: Friends 'low' oil psi 340, only about 10,000miles
[Re: dogdays]
#31752
01/08/07 01:08 PM
01/08/07 01:08 PM
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Joined: Feb 2005
Posts: 28,312 Cincinnati, Ohio
Challenger 1
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Quote:
R.
A high-volume pump may be the answer if you can get the pan off without yanking the engine. If you do this put in a new high-quality oil pump drive.
He's already running a hi vol pump. Read his post.
His oil pressure is fine IMHO. Don't worry about it if the motor runs good.
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Re: Friends 'low' oil psi 340, only about 10,000miles
[Re: Challenger 1]
#31753
01/08/07 01:31 PM
01/08/07 01:31 PM
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dogdays
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Re: Friends 'low' oil psi 340, only about 10,000miles
[Re: 70blackfish]
#31755
01/09/07 12:35 PM
01/09/07 12:35 PM
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Joined: Feb 2003
Posts: 12,675 Columbia, CT
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With a HV pump and 10K miles...that's really low to me. I overlooked that too...lol.
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
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