oil pressure

[greg press]

I need your help.I had new pushrod tubes installed, new oil cooler and all new seals, started it and seals in push rod broke along with 1 cracked push rod.Oil pressure 60 psi I read 30 psi good is that the problem to much oil pressure. i need help       

[Royal]

I can not imagine a situation where high oil pressure would cause a push rod seal or a cracked push rod problem.  IMHO your mechanic did something wrong when he was working on your engine. 

 

The high oil pressure is a secondary problem.  If you are talking about an idling engine, it is certainly high.  If it is a warm idling engine, it is extremely high and might blow out oil seals in your cooler or possibly damage your cooler.  You might want to run a lighter weight oil (you didn’t tell us what oil you were using).  Or, it might be a gauge problem.  Are you sure that the pressure is actually #60?  You might want to check your gauge.  My engine is very tight and I run about #35-40 when I first start the cold engine with the ambient temp at about 70* (10W30 Valvoline).  If your oil pressure is that high, your oil cooler is likely not cooling the engine any at all due to the fact that the oil pressure control actually causes the oil to bypass the cooler (less restriction) until the pressure goes down as the oil gets hot, thus thinner (less viscous) and subsequently the oil pressure is lower and the oil cooler comes into play.  A really high oil pressure on an air cooled VW will always run hot.  

Get some more TDr opinions, but I think you might need a different  mechanic.   

[greg press]

i am running 30 weight brad penn oil the oil pressure was   checked and it happened when engine was cold on start up new oil cooler and tubes with new seals

[newkitman]

I’d check the oil relief valves. A stuck pressure relief valve can cause this.

Allen Caron
VW based 53MGTD - "MoneyPenny"
"If one thing matters, everything matters" - from the book The Shack

[Royal]

Allen’s right, a stuck oil relief could cause the high oil pressure.  Depending on your engine year, you may have a stuck oil control or oil relief.  (or both – highly unlikely)

But this doesn’t explain ”seals in push rod broke along with 1 cracked push rod”.

[Richard Shear]

My oil pressure starts out at 60 lbs but as the engine gets warm , the oil pressure drops. I use Brad Penn oil 40 weight. I don’t have an oil cooler but I do have a spin on oil filter. Roadster’s use an 85HP engine.

[edward ericson]

The push rod cracked? or the push rod tube?

[greg press]

as it turned only thye seals blew out

[Steve Struchen]

Is the crankcase vent open? Sounds like excessive pressure in the crankcase. (Not the same thing as oil pressure.) 

[edward ericson]

The seals will blow out also if they are not seated. The stock tubes have a “bellows” on them that needs to be extended before reinstall of them and the heads. That pushes the seals down into the slots where they fit. These are stock tubes, right?

[greg press]

spring loaded tubes are on it

[Royal]

Does anybody use spring loaded tubes?  I never had ANY luck with them.   

[KentT]

IMO, the new seals were installed incorrectly, or you may have a far more serious problem.

The entire pushrod tube should never be full of oil, it is a gravity (non-pressurized) drain for the oil that is pumped through the pushrods to lubricate the rocker arm assemblies.  When they leak, they drip, then don’t “pump or spurt  oil” or blow seals…

If something actually “blew” the pushrod tube seal, it was likely crankcase blow-by building air pressure inside the entire engine case, not oil pressure… and that may be a far more serious problem.

Is the crankcase vent beside the oil filler cap open and venting the crankcase, or is it clogged?   

KentT2013-06-01 22:24:12

Early FF TDr on 69 VW pan
Slowly coming back from the ashes...

[Author]

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