Gearbox oil drain plug torque

You are absolutely correct when you say "chose". I must have used a torque wrench sometime in the distant past on an oil drain plug, but I really don't remember it. I've put in countless drain plugs with an ordinary wrench, socket, hex wrench, etc. without a torque wrench and I've never had one fall out. I think I may have used a torque wrench on my old Porsche, but I'm not sure.

All I know is that 75nm is scary tight for such a plug going into an alloy part, especially when fixing a stripped oil sump or transmission case involves robbing a bank as step one.

The 50nm figure is nothing more than a guess on my part, so use that figure at your own risk. I can say that the drain plug hasn't fallen out yet, but that's true many many times over if you go back to my first home built go-kart powered when I replaced the two stroke Maytag washing machine engine with a Briggs and Stratton four stroke.

 

About this tight..."errrummmm that's kindaaaaa yeeeeeap it's on about right". I think it's about "man, that probably won't leak and certainly won't come off - ft lbs" Use something smaller so you don't overdo it too.

 

In these type of situations I tighten up with a rachet until the plug nips up and then add a 1/4 of a turn.

 

My mantra: tight enough that it doesn't leak and not a newton meter tighter.

 

An old Navy Chief, an Aviation Structural Mechanic, once told me, " Sir, just tighten 'er up til she starts to strip and then back 'er off a quarter turn".

 

Don't have an 360 but I've heard of too many stripped aluminum oil pans. I always torque with a torque wrench. That said if it feels too tight I will adjust down the amount of torque. I also use a paint pen and write the torque amount on the oil pan so I don't have to look it up. No one knows its there except me and I don't strip anything.

 

Not just too high, completely wrong. You will strip the plug, not too common to strip the pan on a 360 but the plug goes pretty easily.

 

There are two plugs for engine oil. Using the Ricambi parts terminology, they are called "Oil Outlet Plug" and "Magnetic Drain Plug."

I torque the Oil Outlet Plug to spec (~55 lb*ft) but have been using 20 lb*ft for the Magnetic Drain Plug. No leaks, but I don't push my car very hard.


I've attached a document (at very bottom of this message) that might be helpful. It has three sheets; the last sheet lists fastener sizes and torque specs, and links to other posts.


You might also find this procedure handy:
http://www.ferrarichat.com/forum/141917269-post10.html
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Had to replace my oil plug plate. Don't think it was that expensive, but don't remember exactly as i had a few other things done that visit. Did i mention how great the guys at bradan are?

http://www.ferrarichat.com/forum/bradan/400639-bradan-360-service.html

 

75 Nm is way too high. All you need is enough to crush the copper washer I use 20 lb-ft (same as Black360 uses)

 

75 is perfect to do this.
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