MGB & GT Forum
further adventures of eBay GT in Naples, FL - oil pressure
Posted by rocannon
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Apr 30, 2016 11:04 AM
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what do y'all think of these oil pressures? Supposed to be with engine hot.
Frank
Pogo is right.
—————————————————————-
Nothing beside remains. Round the decay…. Boundless and bare
The lone and level sands stretch far away.
Edited 1 time(s). Last edit at 2016-04-30 01:26 PM by rocannon.
Frank
Pogo is right.
—————————————————————-
Nothing beside remains. Round the decay…. Boundless and bare
The lone and level sands stretch far away.
Edited 1 time(s). Last edit at 2016-04-30 01:26 PM by rocannon.
Apr 30, 2016 11:09 AM
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Not good.
I just glanced at the other thread. If I was buying the car I'd figure in the cost and time of rebuilding the engine immediately. At minimum, drop the pan and inspect/replace the rod bearings...then hope for the best.
Friends talking around a fire is the history of mankind.
Edited 1 time(s). Last edit at 2016-04-30 11:14 AM by Rod H..
I just glanced at the other thread. If I was buying the car I'd figure in the cost and time of rebuilding the engine immediately. At minimum, drop the pan and inspect/replace the rod bearings...then hope for the best.
Friends talking around a fire is the history of mankind.
Edited 1 time(s). Last edit at 2016-04-30 11:14 AM by Rod H..
Apr 30, 2016 11:20 AM
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HiPowerShooter
James Booker
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Apr 30, 2016 12:22 PM
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Change the oil...
Pressures aren't anywhere near "rebuild" status alone.
If it were 50psi at 3k then I'd be worried. 40/50psi at under 1k idle is still good on an old engine. It's tired, but still perfectly serviceable. If it were a new engine, I'd be worried. I'm assuming it's got some miles on it.
"One test is worth a thousand expert opinions"--Alvin "Tex" Johnston...Boeing test pilot.
"Who do you think you are? I am."...Pete Weber
73 MGB. Tires: Round, black, hold air. Oil: Sometimes old, sometimes new...always slippery. Oil filter: Yellow, usually full of oil. Carbs: 2 SU HIF. Distributor: Yes. Headlights: Not that bright but bright enough. A bunch of other stuff most cars have but not really important enough to itemize. Oh, wait...it has a cool sounding exhaust with stickers on the chrome tips. Really slays the ladies...
Pressures aren't anywhere near "rebuild" status alone.
If it were 50psi at 3k then I'd be worried. 40/50psi at under 1k idle is still good on an old engine. It's tired, but still perfectly serviceable. If it were a new engine, I'd be worried. I'm assuming it's got some miles on it.
"One test is worth a thousand expert opinions"--Alvin "Tex" Johnston...Boeing test pilot.
"Who do you think you are? I am."...Pete Weber
73 MGB. Tires: Round, black, hold air. Oil: Sometimes old, sometimes new...always slippery. Oil filter: Yellow, usually full of oil. Carbs: 2 SU HIF. Distributor: Yes. Headlights: Not that bright but bright enough. A bunch of other stuff most cars have but not really important enough to itemize. Oh, wait...it has a cool sounding exhaust with stickers on the chrome tips. Really slays the ladies...
Topic Creator (OP)
Apr 30, 2016 12:56 PM
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Joined 14 years ago
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here's pressure at idle and at a bit over 3000 rpm
Pogo is right.
—————————————————————-
Nothing beside remains. Round the decay…. Boundless and bare
The lone and level sands stretch far away.
Edited 1 time(s). Last edit at 2016-04-30 12:59 PM by rocannon.
Pogo is right.
—————————————————————-
Nothing beside remains. Round the decay…. Boundless and bare
The lone and level sands stretch far away.
Edited 1 time(s). Last edit at 2016-04-30 12:59 PM by rocannon.
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Apr 30, 2016 12:59 PM
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Topic Creator (OP)
Apr 30, 2016 01:03 PM
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Chris,
I noticed that. Those pressures would probably be lower if engine was hot. And I specifically asked for pressures at hot.
Guess I'm picky. I'd expect better pressures for a car that looks like that and for which they're asking over $11,110. And still not at the reserve.
Anyone notice the routing of the clutch line?
Like I said, I'm no longer bidding.
Frank
Pogo is right.
—————————————————————-
Nothing beside remains. Round the decay…. Boundless and bare
The lone and level sands stretch far away.
Edited 1 time(s). Last edit at 2016-04-30 01:04 PM by rocannon.
I noticed that. Those pressures would probably be lower if engine was hot. And I specifically asked for pressures at hot.
Guess I'm picky. I'd expect better pressures for a car that looks like that and for which they're asking over $11,110. And still not at the reserve.
Anyone notice the routing of the clutch line?
Like I said, I'm no longer bidding.
Frank
Pogo is right.
—————————————————————-
Nothing beside remains. Round the decay…. Boundless and bare
The lone and level sands stretch far away.
Edited 1 time(s). Last edit at 2016-04-30 01:04 PM by rocannon.
Apr 30, 2016 01:10 PM
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Apr 30, 2016 01:32 PM
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Mustangsix
Jack Collins
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Apr 30, 2016 08:58 PM
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That's where my temp gauge lies when fully warmed up.
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May 1, 2016 12:20 AM
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HiPowerShooter
James Booker
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May 1, 2016 12:38 AM
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From what I've noticed "N" should concur with approx 180° at the sending unit. About 1/2 way between "N" and "H" is approx 210°...
"One test is worth a thousand expert opinions"--Alvin "Tex" Johnston...Boeing test pilot.
"Who do you think you are? I am."...Pete Weber
73 MGB. Tires: Round, black, hold air. Oil: Sometimes old, sometimes new...always slippery. Oil filter: Yellow, usually full of oil. Carbs: 2 SU HIF. Distributor: Yes. Headlights: Not that bright but bright enough. A bunch of other stuff most cars have but not really important enough to itemize. Oh, wait...it has a cool sounding exhaust with stickers on the chrome tips. Really slays the ladies...
"One test is worth a thousand expert opinions"--Alvin "Tex" Johnston...Boeing test pilot.
"Who do you think you are? I am."...Pete Weber
73 MGB. Tires: Round, black, hold air. Oil: Sometimes old, sometimes new...always slippery. Oil filter: Yellow, usually full of oil. Carbs: 2 SU HIF. Distributor: Yes. Headlights: Not that bright but bright enough. A bunch of other stuff most cars have but not really important enough to itemize. Oh, wait...it has a cool sounding exhaust with stickers on the chrome tips. Really slays the ladies...
May 1, 2016 12:59 AM
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Donthuis
Don van Riet
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May 1, 2016 03:53 AM
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With the standard thermostat of 82C in, the needle should be on or very close to the "N" mark. If not either the feeler or the gauge is faulty.
In summer I usually go to the 74C thermostat myself, but the needle position is then below the N but slightly higher than your picture shows.
Even so, if the real temp is right on the fully heated engine, I see nothing to complain about the oil pressures. My values are close to the ones being shown.
Do know BL stated 25 as the absolute minimum oil pressure on (low rpm) idle, but by then you will probably hear the main bearings rumbling. Shortly after this happened to me years ago my original engine block gave up by catastrofic failure. 40 as minimum nowadays on a very hot block feels much better...
In summer I usually go to the 74C thermostat myself, but the needle position is then below the N but slightly higher than your picture shows.
Even so, if the real temp is right on the fully heated engine, I see nothing to complain about the oil pressures. My values are close to the ones being shown.
Do know BL stated 25 as the absolute minimum oil pressure on (low rpm) idle, but by then you will probably hear the main bearings rumbling. Shortly after this happened to me years ago my original engine block gave up by catastrofic failure. 40 as minimum nowadays on a very hot block feels much better...
In reply to # 3253642 by Mustangsix
That's where my temp gauge lies when fully warmed up.
May 1, 2016 07:57 AM
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The manual actually states 10-25lbs idle and 50-80lbs running.
My pals GT which I've just driven 45 miles home for a LHD conversion - and not like a nun ! - is showing just 40 running and 10 at idle but with no hint of rumblings or other untoward noises, in fact if the oil pressure gauge were not there I wouldn't have know anything was amiss.
Whilst it's most definitely not good then it's not a guarantee of rumblings nor would it seem as much of a harbinger of catastrophe as suggested although I wouldn't want to be driving it much more until it's sorted.
Barry if you're reading this I'll be in touch, I certainly don't remember the pressure being that low when we drove it down from UK and it's not possible we could have not noticed !
My pals GT which I've just driven 45 miles home for a LHD conversion - and not like a nun ! - is showing just 40 running and 10 at idle but with no hint of rumblings or other untoward noises, in fact if the oil pressure gauge were not there I wouldn't have know anything was amiss.
Whilst it's most definitely not good then it's not a guarantee of rumblings nor would it seem as much of a harbinger of catastrophe as suggested although I wouldn't want to be driving it much more until it's sorted.
Barry if you're reading this I'll be in touch, I certainly don't remember the pressure being that low when we drove it down from UK and it's not possible we could have not noticed !
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