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FYI, angle torquing isn't necessary on an M10 engine, just plain ole ft/lbs in the proper sequence.



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Just a regular old torque wrench for me.  The tube was in the bottom of the "to go back on" box.  Hoping to drive it this afternoon, but need to go watch the Hobbit with the Fam first.

now that I'm thinking about this, I've never heard it discussed.  Does anyone "undo" the bolts in the same pattern too?? 

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With all due respect the reason I asked the question was because attached document was included with purchased gasket as well as service information (attached link) was published by BMW.


My personal experience; first time installed a new head gasket and just torqued in proper sequence resulted in oil leak around presure port, where on second attemp I followed manufacture installation guideline and no leakage issue what so ever.


I am sure others used old procedure and never had any issue and maybe this was single case.






FYI, angle torquing isn't necessary on an M10 engine, just plain ole ft/lbs in the proper sequence.




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Head gaskets are one time only.

Hans--I'll have to disagree with this. I have re-used stock head gaskets with no problem. They are cheap so I would not re-use many times, but it can be done. This has been discussed before here.


IMO there would be no reason to pull the head just to install that oil rail. But I would drain coolant if I was loosening all the head bolts at once.


I think I would just open the bolts that need to. Two at a time. And then tighten all just couple Nm's more.


I would not use the "two-at-a time" method if all the other bolts were at full torque. Could imagine backing off all bolts a bit (in the appropriate release pattern, of course) but not fully--then using the two-at-a time method. This might avoid the need to drain coolant. Then torque as usual.


I've never angle-torqued, and have never had a head gasket leak because I did not. That's not to say it is a bad method, I just have not done it.


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FYI, angle torquing isn't necessary on an M10 engine, just plain ole ft/lbs in the proper sequence.






I´d say it depends on the stuff you´re working with. Cylinder head gaskets delivered today do use more actual production methods and other materials than back in the days. If you can take a new old stock gasket bought years ago from your parts storage I would agree to mount it just the way it was always done. If you buy a new actually produced gasket I would always follow the actual mounting instructions that come with it.


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Were the cover and head milled at the same time?



I was under the impression that head gaskets were one time, but if its been done successfully, I will file that away. having argues with a front cover leak for some time, I get cautious. 


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