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[likethat]

There is a slight pressurisation of the engine from blow by and from the movements of the rotating mass. I.E. ....connecting rods, crank and so on. That is why there are PCV valves and a breather on an engine. If you where to plug the breather, oil will slip past the seals of the crank, and any where it is weak. Like the valve cover gasket and oil pan gasket.

The oil pump has nothing to do with this pressure. The oil pump works by vacuum. The pump makes more pressure engine side which causes less atmospheric pressure on the pick up tube side which starts the vacuum. Some might call it displacement. Which would describe it more correctly.

I have 7 muscle cars, one of which I drag race a 67 camaro 427c.i., and 3 motor cycles. I have owned over 30 cars in my life. I am the only person that will ever work on our cars no matter what it is. From paint to rebuilding a transmission. I have restored from the ground up 4 cars. Went to school for mechanics, worked in a transmission shop, motorcycle shop, and done fleet maintenance for 2 companies in my life.

My brother bought a 79 Chevy truck that the previous owner put 2 PCV valves on it, and painted the engine with the truck running. There was oil leaks every where and there was paint inside the carb. He got the truck for $100 because it was leaking so bad and running like crap. I rebuilt the carb and put a breather in place of one of the PCV valves. After that it would burn the tires in 2 gears, ran like a watch, and never leaked oil the whole time my brother owned it.

[Nubz Profile]

Now I miss this. Pointless bickering by some dumb ass that has to be right. Keep fighting with Yooper, you obviously super intelligent smart brainiac car guy you.

[likethat]

Nubz is that comment for "Me Myself and I" or for me?

[Blaster Profile]

I have work on ford car dealer and repair and I was spare parts seller and talk to the mecaninc every day!

They never measure any torque, just put an new gasket on the plugg if it´s made of copper, and the newer one have a sealing ring in rubber and they dont need to replease at all. only if we wanted to earn more money in company a plugg 3€ for each car makes a lot of money in only a week.

I have never ever measure any torgue on my about 10 cars over the year, and the have never leaked! not my buddies that own the a car repair/service store either.

If you want to have everything correct and dont know how hard you should tighten the bolt you have to read and use right torque or the bolthead will break if your are as hard in this thread!

[=TAO=WARPIG Profile]

Should I use premium or regular gas in my car? What are the upsides of each?
Good to know that if I ever need to make repairs I now know where I can find a bunch of tools.
Now get back to your hacking.

[Blaster Profile]

That's because most people tighten it very tight anyhow, without the use of a torque wrench, probably going past the 30 lbs or so recommended.

I've never said there's a ridiculous amount of pressure in the pan, but there is pressure, enough where if you do not torque the drain plug it will squeeze out and not solely by way of gravity.

Yepp of course it´s pressure in, oil has weight and only that will cause pressure.

[NOBBY (NL) Profile Website]

Newton's first law of motion