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Retorquing heads etc.
- Subject: Retorquing heads etc.
- From: "Tom Brown" <tbrown@xxxxxxxxxxx>
- Date: Sun, 25 Jul 2004 20:42:39 -0500
Guys:
Mark has it right. You don't want to loosen all the bolts at once if
you're re-torquing. That would be very bad, allowing oil to escape from
the passages etc. Just one bolt at a time.
For replacing a head that's been removed, you have to use a new gasket and
follow the 90 degree/90 degree procedure. I see no reason for an angle
gage. Put the wrench at 12 oclock and go to 3. Done deal.
- -TB
>From: Marco S Hyman <marc@xxxxxxxxx>
>Subject: Re: Oilhead cylinder torque
>Commenting on various messages...
>> This snippet below indicates to me that we should be torquing to 20 Nm
and
>> doing 1 pass over all of the nuts turning 90 degs. and a second pass
over
> >all of the nuts turning another 90 degrees. That is different from
torquing
>That's the procedure when installing a head. The procedure is different
>for retorquing. To retorque you back off one nut, torque to 20 Nm,
>add 180 degrees, then procede to the next nut in a cross-wise pattern.
>> These gaskets are not meant to be retorqued. If you are sure the leak is
>If the head has been removed, yes... replace the gasket. However
>retorquing is required about 600 M (1000 Km) after installing a head
>and is part of the 600 Mile/1000 Km service on a new bike (third item
>on the BMW official checkoff sheet).
>// marc
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End of oilheads-digest V1 #250
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