Hi all,
Once upon a time, when everything on the engine was cast iron, I would put in a head gasket, go for a drive, then when the engine was cooled back down (normally next morning) I would re-torque it. Then possibly again after a 100 miles or so.
I am getting ready to light off my Merc 470 with a new head and I found this in the Mercruiser Service Manual #8, page 3A-18 under a " ! Caution".
"Also, cylinder head bolts must be retorqued after engine has been brought to normal operation temperature."
Now, do I take this literally, and re-torque the head bolts when the engine is warm? Or bring it up to operating temperature, let it cool off, then re-torque the bolts?
My first time messing with an engine that some parts are made of aluminum.
Once upon a time, when everything on the engine was cast iron, I would put in a head gasket, go for a drive, then when the engine was cooled back down (normally next morning) I would re-torque it. Then possibly again after a 100 miles or so.
I am getting ready to light off my Merc 470 with a new head and I found this in the Mercruiser Service Manual #8, page 3A-18 under a " ! Caution".
"Also, cylinder head bolts must be retorqued after engine has been brought to normal operation temperature."
Now, do I take this literally, and re-torque the head bolts when the engine is warm? Or bring it up to operating temperature, let it cool off, then re-torque the bolts?
My first time messing with an engine that some parts are made of aluminum.
