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Old 15 Jun 2013
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2012 R1200 GSA Torque Settings

Hello everybody,
Currently on a trip from Aust to South Africa with my dad on 2 GSAs. In Kashgar, China at the moment, and have discovered an oil weep that appears to be coming from between the crankcase and the barrel from the left hand side of the engine. Dad's bike had the same thing happen, but was fixed by BMW in KL, who said that it was a fairly common thing with the four valve head engines. I think it's a result of the head bolts needing to be tightened (it was on Dad's, about to go and have a look at mine now). Can anybody give some torque ratings for the head bolts (or any other bolts that they think might be a cause of this weep, before I report back with a better idea of where the weep is coming from)?
Thanks in advance,
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Old 15 Jun 2013
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I wouldnt have thought it was your head bolts, only the earlier single cam models needed those retightening on the first service. I have never seen the twin cam leak from the base gasket, and even if it did you would have to remove the cylinder to reapply some new sealant. I am 99% certain it will be coming from your timing chain tensioner. Is it just coming from the rear of the cylinder? If so look behind your throttle body and in there is a 15mm nut that is your timing chain tensioner. It will damp around the ledge it sits on. We have quite a few come loose and leak. You have to remove your throttle body to get to it and good luck torquing it without removing the whole front end lol
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Old 15 Jun 2013
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Hi Tony, thanks a lot for the reply. Given that the mentioned nut was less than finger tight, we're also 99% sure that that's where the problem lay. We've tightened it up, and hopefully now my bike is oil-tight!
Thanks again,
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Old 15 Jun 2013
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might be worth turning an eye over the timing chain tensioner on the right side of your engine aswell it sits on the bottom of the right cylinder and pokes its nut through the the plastic cover under the cylinder, not as common as the left side leaking but have seen a couple.
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Old 27 Jul 2013
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leaky crank

I had the same thing happen on my 2011 GSA at 5000km the oil started leaking and stopped aftertightening up the boltson th left side.
It seemed to be a assembly fault.
Had no problems after. solves many problems in Bavaria
With a little bit of convincing, two Mechanics at the BMW Car dealership in Slovakia tightened some bolts on the base of the barrel ( no torque wrench ) and off I was.
Phoneing Munich didn't help any, the 24/7 service people where all off at a Party on Friday afternoon Drinking Beer.
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