My 960 Progress
#1
My 960 Progress
well just got the new head gasket and reinstalled the head tonight. http://picasaweb.google.com/maarlen/...eat=directlink
The one pic in there with the cover one was just to see how it was gonna look when it was done i couldn't resist
The one pic in there with the cover one was just to see how it was gonna look when it was done i couldn't resist
#5
Here's a link to the pictures of my engine HG job BECAUSE somebody copper sprayed an OEM-type HG:
http://smg.photobucket.com/albums/v77/kendogg441/Volvo/
And that doesn't look like a light coating at ALL. You can't see anything BUT the copper spray.
The copper spray is for MLS-type gaskets. it doesn't allow the RTV lines on an OEM-type gasket to seal properly. What happened with my engine is that the PO attempted to copper spray a stock gasket, and in doing so, coolant and oil passage weren't sealing and they were mixing. As it would warm up, the cooling system would pressurize and force coolant out of the water passages, and it would drain down the oil return holes from the head. As it filled the crankcase, it would create pressure, and force itself into the PCV system, going thru the intake manifold, and burning coolant/oil. Combustion chambers sealed fine, since they have metal crush rings in the gasket to seal them with.
http://smg.photobucket.com/albums/v77/kendogg441/Volvo/
And that doesn't look like a light coating at ALL. You can't see anything BUT the copper spray.
The copper spray is for MLS-type gaskets. it doesn't allow the RTV lines on an OEM-type gasket to seal properly. What happened with my engine is that the PO attempted to copper spray a stock gasket, and in doing so, coolant and oil passage weren't sealing and they were mixing. As it would warm up, the cooling system would pressurize and force coolant out of the water passages, and it would drain down the oil return holes from the head. As it filled the crankcase, it would create pressure, and force itself into the PCV system, going thru the intake manifold, and burning coolant/oil. Combustion chambers sealed fine, since they have metal crush rings in the gasket to seal them with.
#6
#10
#14
While it is recommended to replace the head bolts, I would risk using the new ones you have, again. My green Volvo rebuild manual has a statement about reuse, and it is based solely on the overall length or stretch of the bolt.
Since these bolts were never put under stress of on/off cycles of a running engine, I doubt very much that you will have any problems with them, especially if you oiled them and chased out the block to clean the threads.
I have re-used the bolts on mine a couple of times.
As to the torque sequence there is also a recommendation to reduce the final torque angle, something I never have done, I went by the book every time. I will state though, my manual when bought new, came with a set of labels for corrections and one of them was a reduction of the torque values for the head to block bolts. The current recommendation is in addition to that already corrected manual label.
DanR
Since these bolts were never put under stress of on/off cycles of a running engine, I doubt very much that you will have any problems with them, especially if you oiled them and chased out the block to clean the threads.
I have re-used the bolts on mine a couple of times.
As to the torque sequence there is also a recommendation to reduce the final torque angle, something I never have done, I went by the book every time. I will state though, my manual when bought new, came with a set of labels for corrections and one of them was a reduction of the torque values for the head to block bolts. The current recommendation is in addition to that already corrected manual label.
DanR
Last edited by dan550i; 10-14-2010 at 09:38 AM.
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Jomo1994z71
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