Is there such a thing as 2 much oil pressure? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

724x4a/cchevy · 12-15-2003, 10:12 PM

its called overlubrication.

junkyardjohn · 12-15-2003, 10:18 PM

(POSTED BY 724X4A/CCHEVY its called overlubrication)

YEP ... MY OLD GIRLFRIEND ALWAYS SAID HER BOOBS WERE TO BIG TOO.

Class of 69 · 12-16-2003, 12:11 AM

Compression looks fine. I will put money on it, that one of the push rods lines right up with the unbaffled hole to your breather, and is shooting oil right up it. Yes, you should make sure you get a set of valve covers high enough to clear those high buck roller rockers, but make sure it has a baffle to divert the oil away from the breather opening, or I don't think the situation is going to change. There's nothing wrong with a high volume/high pressure oil pump...as long as you can keep the oil in the engine. A high pressure oil pump WILL NOT create high blow by pressure, which is the most common cause of your leakage, but seeing the pic of your current valve cover, I will bet money the oil is going right up the breather pipe. Do not plug the breather hole...that can cause more pressure inside the block. The breather is there for a reason, just get the oil away from it.

dinnut · 12-16-2003, 12:14 AM

Quote:

Originally posted by smokekiki
dinnut,You might not know everything about engines,who does?,but you have a cool web site,thanks for sharing all those pics!

no prob. i have a bunch more on my computer

Terry Peerson · 12-16-2003, 07:01 AM

Hi,

Don't overlook something as simple as the PCV Valve. A defective PCV Valve can cause excessive crankcase pressure and cause all kinds of oil leaks (from valve cover gaskets to the rear main-seal).

Terry

hgs_notes · 12-16-2003, 12:18 PM

Something simple that people tend to forget is oil viscosity. If the oil has a high viscosity number it flows harder and in the colder months it may not drain back to the pan as well as in the summer, at least until engine warm up. The other thing is to look for any blockage on the drain holes in the heads to make sure the oil has a clear path back to the pan. Sometimes there are casting edges that can block flow, or even just sludge in the holes.

HG

PanelDeland · 12-17-2003, 12:26 AM

I have heard of too much oil pressure washing out bearings.I have not actually seen this happen.I would think the bypass spring would open, causing other problems.
You seem to have good compression #s so I would think blowby would be the least likely cause of oil coming out the oil breather.

12-15-2003, 10:12 PM	#26
724x4a/cchevy Self-proclaimed LED man Join Date: Nov 2003 Location: Harrisburg, Missouri Posts: 1,021	its called overlubrication. __________________ My LED Website My Photobucket Album of LED's Ask me about hand-made custom L.E.D brake and reverse lights. <- LINK I also do LED: -Third Brake/Cargo -Brake (truck and burb) -Reverse (truck and burb) -67-68 Front Turn Signals -69-70 Front Turn Signals -71-72 Front Turn Signals -GMC Front Turn Signals I can also do custom lights for other vehicles....i did a set for a AMC Gremlin once Norwood Survivor

12-15-2003, 10:18 PM	#27
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,427	(POSTED BY 724X4A/CCHEVY its called overlubrication) YEP ... MY OLD GIRLFRIEND ALWAYS SAID HER BOOBS WERE TO BIG TOO. __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

12-16-2003, 12:11 AM	#28
Class of 69 Registered User Join Date: Mar 2003 Location: Stillwater MN Posts: 1,166	Compression looks fine. I will put money on it, that one of the push rods lines right up with the unbaffled hole to your breather, and is shooting oil right up it. Yes, you should make sure you get a set of valve covers high enough to clear those high buck roller rockers, but make sure it has a baffle to divert the oil away from the breather opening, or I don't think the situation is going to change. There's nothing wrong with a high volume/high pressure oil pump...as long as you can keep the oil in the engine. A high pressure oil pump WILL NOT create high blow by pressure, which is the most common cause of your leakage, but seeing the pic of your current valve cover, I will bet money the oil is going right up the breather pipe. Do not plug the breather hole...that can cause more pressure inside the block. The breather is there for a reason, just get the oil away from it. __________________ 69 GMC K10 ..some restoration required....still..

12-16-2003, 12:18 PM	#31
hgs_notes GEARHEAD Join Date: Aug 2003 Location: MN Posts: 6,122	Something simple that people tend to forget is oil viscosity. If the oil has a high viscosity number it flows harder and in the colder months it may not drain back to the pan as well as in the summer, at least until engine warm up. The other thing is to look for any blockage on the drain holes in the heads to make sure the oil has a clear path back to the pan. Sometimes there are casting edges that can block flow, or even just sludge in the holes. HG __________________ If no one knows what you're doing, they can't tell you you're doing it wrong HG's Dream Car Build - Shelby Cobra Kit Build your own adjustable track bar 71 Long Fleet C/10 72 Jimmy 4x4 (Junkyard Jimmy) HG's Plow Truck '78 K35 Dually Bigass Farm Truck HG's thread of miscellaneous stuff

12-17-2003, 12:26 AM	#32
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	I have heard of too much oil pressure washing out bearings.I have not actually seen this happen.I would think the bypass spring would open, causing other problems. You seem to have good compression #s so I would think blowby would be the least likely cause of oil coming out the oil breather. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

12-16-2003, 07:01 AM	#30
Terry Peerson Registered User Join Date: Aug 2003 Location: Bonner Springs, KS Posts: 307	Hi, Don't overlook something as simple as the PCV Valve. A defective PCV Valve can cause excessive crankcase pressure and cause all kinds of oil leaks (from valve cover gaskets to the rear main-seal). Terry



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