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Coolant leak! help...?

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  #31  
Old 06-10-2002, 12:21 PM
DSaholic's Avatar
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So scooby should I just check the torque of the head bolts and tighten them if need be Or is there somthing else that should be done? BTW do you know the correct torque specs for the head bolts? Thanks for the info ....
 
  #32  
Old 06-10-2002, 09:24 PM
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You can try re-torquing first. If you haven't eaten away too much at the head gasket it may seal up without installing a new gasket.

You have to remove the cams to access all the head bolts/nut. The cam cover needs to be torqued precisely to 89 in-lbs. You will need a low range torque wrench for this, a typical torque wrench will not be accurate at this low torque.

NOTE: DO NOT OVER TORQUE THE 8mm HEAD BOLTS!!!!!!!!!!

The 8mm head bolts are spec'd at 28N-M (BMW spec) http://faq.f650.com/FAQs/Photos/HGas.../HeadBolts.jpg

http://faq.f650.com/FAQs/Head_Gasket_Repl.htm

The 8mm head bolts are spec'd at 33N-M (Bombardier spec)

I'D RECOMMEND A CONSERVATIVE TORQUE FOR THE 8mm HEAD BOLTS!!!!

The 8mm bolts break easily. The 8mm cylinder threads strip easily.

The 10mm stud nuts are spec'd at 50N-M (BMW spec)
The 10mm stud nuts are spec'd at 60N-M (Bombardier spec)

The torque spec on the cam chain tensioner bolt is 30ft-lbs.
 
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