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Oil pressure problem.

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« on: April 16, 2016, 02:36:50 PM »
OK here it goes, I have a newer motor. I pulled the motor out plastic gauge main and rod bearings for clearance all checked out good. I put a new gauge, sender and even a mechanical gauge on the motor they both read the same oil pressure. So I do believe it's not a gauge issue. U fire the motor up 80 psi. Start to go up river get s little heat in it 40 psi at idle, you nail it it goes to 70 psi for s second then shoots down to 20 psi. I'm just blown away. Has any one else ever had this problem?


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« Reply #1 on: April 16, 2016, 02:38:47 PM »
It does have a 10 Quart pan with trap door if this helps

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« Reply #2 on: April 16, 2016, 02:44:48 PM »
How can u tell if you have the correct dip stick?  For the pan. Could the person I bought it from have installed wrong dip stick

Flusher

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« Reply #3 on: April 16, 2016, 02:53:50 PM »
Am I reading correctly that you had the pan off, checking bearing clearance?

Last time this issue came up, the pickup fell out.
"I want to roll with my brother Joe" - Joe Bateman - January 29, 1950 ~ November 27, 2013

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« Reply #4 on: April 16, 2016, 03:06:29 PM »
OK here it goes, I have a newer motor. I pulled the motor out plastic gauge main and rod bearings for clearance all checked out good. I put a new gauge, sender and even a mechanical gauge on the motor they both read the same oil pressure. So I do believe it's not a gauge issue. U fire the motor up 80 psi. Start to go up river get s little heat in it 40 psi at idle, you nail it it goes to 70 psi for s second then shoots down to 20 psi. I'm just blown away. Has any one else ever had this problem?

How much oil?

Does it have a tray?

What oil?

Any idea on oil temp?

Sounds too full of oil to me.

Pan to pick up should be about 5/16". No less than 1/4", no more than 1/2". Was that checked?
Pick up welded on?
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

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Ray

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« Reply #5 on: April 16, 2016, 03:14:34 PM »
Pick up was welded on. Yes I did check oil pick up to pan clearance, was good. No windage tray. I put 20-50 VR1 oil in it on test stand it had like 95psi of oil pressure on test stand. Drained all the oil out and put 10 quarts of 10-30 Valvoline. I'm wondering if the Dooley oil pan takes a different oil dip stick. Because it had a stock like chrome dip stick that I cut to mark and make work. I removed it and it was brittle and broke. So I'm wondering if when I grinded the notches in the side of I weakened it.

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« Reply #6 on: April 16, 2016, 03:17:03 PM »
Flusher. I pulled the motor the first time because oil pressure was low. And go check the motor out. Not because the pick up fell off.

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« Reply #7 on: April 16, 2016, 03:18:11 PM »
Does Dooley have a specific dip stick for there pans

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« Reply #8 on: April 16, 2016, 03:20:04 PM »
Could it have not enough oil and pumping it out to quick? High volume pump. With not enough oil. That's why it goes from 40 to 70 it runs out of oil then drops to 20 psi.

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« Reply #9 on: April 16, 2016, 03:21:26 PM »
I feel like a idiot. I've been around hotrods and motor for to long to be stumped like this. Maybe I'm getting old. Idk.

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« Reply #10 on: April 16, 2016, 03:31:06 PM »
I feel like a idiot. I've been around hotrods and motor for to long to be stumped like this. Maybe I'm getting old. Idk.

Use the factory stick and drop the oil level to the very bottom of it,  like one to two quarts low,  run it again. Grab a bottle of Lucas oil stabilizer if that cures the issue. Keep it less than 9 quarts in the pan.

Common problem.

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« Reply #11 on: April 16, 2016, 03:34:06 PM »
GT Jets.  thanks I will try. I appreciate your help and knowledge.

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« Reply #12 on: April 16, 2016, 03:34:59 PM »
What about the weight oil?

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« Reply #13 on: April 16, 2016, 03:37:15 PM »
What about the weight oil?

Without knowing a lot about your set up,  I would stick near 40wt.

Just a WAG though.

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If i get some free time tonight at work, ill play with it and post it for everyone to see.

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Ray

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« Reply #14 on: April 16, 2016, 04:07:48 PM »
Flusher. I pulled the motor the first time because oil pressure was low. And go check the motor out. Not because the pick up fell off.

That wasn't what I meant.  I was trying to get at, what else did you see in there?
"I want to roll with my brother Joe" - Joe Bateman - January 29, 1950 ~ November 27, 2013

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« Reply #15 on: April 16, 2016, 04:14:07 PM »
They welded part of a windage tray to the top of the pan, I cut it out. I don't know how someone could do that to a expensive pan that was new. It's a eagle rotating assembly it's a 496. It's the nicest motor I've ever had I just don't want to mess it up. The pan has a trap door in it so I tho it was starving it. With the windage tray on top

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« Reply #16 on: April 16, 2016, 04:21:39 PM »
They welded part of a windage tray to the top of the pan, I cut it out. I don't know how someone could do that to a expensive pan that was new. It's a eagle rotating assembly it's a 496. It's the nicest motor I've ever had I just don't want to mess it up. The pan has a trap door in it so I tho it was starving it. With the windage tray on top

I run a ten quart Dooley and a MOROSO windage tray,  trap doors,  works great,  but with ten quarts,  the oil temp goes to the moon. Basically aerated oil. Pulled out a quart,  runs awesome. Trap doors are virtually unaffected by a tray.

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« Last Edit: April 16, 2016, 04:27:11 PM by GT Jets »
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

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« Reply #17 on: April 16, 2016, 04:23:21 PM »
Thanks again. You rock!

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« Reply #18 on: April 16, 2016, 06:42:24 PM »
 OK, I installed a new dip stick one I trust. I was 1 Quart over on oil.

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« Reply #19 on: April 16, 2016, 07:21:23 PM »
OK, I installed a new dip stick one I trust. I was 1 Quart over on oil.


Interesting,  sounds like you were running BFM oil (big foamy mess)..


Lol

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If i get some free time tonight at work, ill play with it and post it for everyone to see.

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Ray

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« Reply #20 on: April 16, 2016, 07:22:27 PM »
Lmfao

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« Reply #21 on: April 16, 2016, 08:22:26 PM »
Joe absolutely not! I know your trying to help. I never took it that way. I'm sorry if it sounded like that my apologies. If I knew the answer I would have never asked the question. Actually it's a milodon pick up if I remember correctly and they bolt on. Don't most BBC oil pick ups bolt on? I. Not to familiar with BBC and I might be confused with the one in my 67 Nova. Sometimes life is a blur.

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« Reply #22 on: April 16, 2016, 09:16:29 PM »
Joe absolutely not! I know your trying to help. I never took it that way. I'm sorry if it sounded like that my apologies. If I knew the answer I would have never asked the question. Actually it's a milodon pick up if I remember correctly and they bolt on. Don't most BBC oil pick ups bolt on? I. Not to familiar with BBC and I might be confused with the one in my 67 Nova. Sometimes life is a blur.

They technically press into the pump,  it should be TIG welded to the pump itself.

Since I'm a cheap ass, I tack weld it with a MIG and braze it all the way around.

GT
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

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Ray

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« Reply #23 on: April 16, 2016, 10:32:22 PM »
Ain't the press in one's stock? If I recall mine is a milodon that bolts to one of the bolts on the oil pump. Maybe I'm wrong

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« Reply #24 on: April 16, 2016, 10:38:22 PM »
Ain't the press in one's stock? If I recall mine is a milodon that bolts to one of the bolts on the oil pump. Maybe I'm wrong

There is a bolt,  but still presses in.
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

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Ray

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« Reply #25 on: April 16, 2016, 10:39:47 PM »
Absolutely, but the bolt will keep it from coming out unlike a small block

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« Reply #26 on: April 18, 2016, 11:18:22 PM »
Ok, I've done some more reaserch and talking to others. My block is a gen5. Being I did not build the motor. I found out I need to see if the by pass to the oil cooler was removed. If not i need to plug it.


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« Reply #27 on: May 16, 2016, 09:50:53 PM »
OK here it goes, I have a newer motor. I pulled the motor out plastic gauge main and rod bearings for clearance all checked out good. I put a new gauge, sender and even a mechanical gauge on the motor they both read the same oil pressure. So I do believe it's not a gauge issue. U fire the motor up 80 psi. Start to go up river get s little heat in it 40 psi at idle, you nail it it goes to 70 psi for s second then shoots down to 20 psi. I'm just blown away. Has any one else ever had this problem?


I run a ten quart Dooley and a MOROSO windage tray,  trap doors,  works great,  but with ten quarts,  the oil temp goes to the moon. Basically aerated oil. Pulled out a quart,  runs awesome. Trap doors are virtually unaffected by a tray.

GT
GT what moroso windage tray do you run? I'm going to make a order to summit racing and would like to get the correct one. Thanks in advance, Steve.

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« Reply #28 on: May 16, 2016, 10:05:09 PM »
GT what moroso windage tray do you run? I'm going to make a order to summit racing and would like to get the correct one. Thanks in advance, Steve.

This POS.

I had to punch the dipstick hole larger,  it kept hitting the stick and bending it,  completely pissed me off.
Lol

http://www.jegs.com/i/Moroso/710/23030/10002/-1


GT
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  • Boat #2: 19' Bubble deck Jet BBC Berkeley
If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

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« Reply #29 on: May 16, 2016, 10:07:42 PM »
Awesome thanks. I didn't know if I needed a full length windage tray or a partial for a stock oil pan. Thanks for all your help and knowledge GT

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« Reply #30 on: May 16, 2016, 11:49:48 PM »
Previous to reading this thread I ran 10 qts in my pan. Pressure when cold was 80 and would drop as low as 20 psi. After reading this I ran 8 qts and psi doesnt drop below 40 psi. Valvoline 15-40 diesel oil. I might top it off with Lucas stabilizer and bring it up to 9 qts. Hydraulic flat tappets. Any opinions?
I once tried to NOT have a good time. It just didn't work out!

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« Reply #31 on: May 17, 2016, 12:08:44 AM »
Previous to reading this thread I ran 10 qts in my pan. Pressure when cold was 80 and would drop as low as 20 psi. After reading this I ran 8 qts and psi doesnt drop below 40 psi. Valvoline 15-40 diesel oil. I might top it off with Lucas stabilizer and bring it up to 9 qts. Hydraulic flat tappets. Any opinions?


I gots no issues with it....LOL


GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

el mojado

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« Reply #32 on: May 17, 2016, 12:10:22 AM »
😎 how i feel when GT agrees with what I've done.
I once tried to NOT have a good time. It just didn't work out!

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« Reply #33 on: May 17, 2016, 12:14:36 AM »
😎😎😎
I once tried to NOT have a good time. It just didn't work out!

el mojado

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« Reply #34 on: May 17, 2016, 12:15:00 AM »
Aw man.... no smiley face.
I once tried to NOT have a good time. It just didn't work out!

 


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