starlet1991 Posted May 7, 2020 Share Posted May 7, 2020 Currently going through a forged engine assembly with the below specs: - blocked bored to 74.5mm and surface decked - wossner forged pistons - acl bearings - scat rods - arp main cap studs the block has been assembled using engine assembly lube and following tightening torques provided by arp. The assembled crank on block rotated very easily however when the rods and pistons were installed, it seems that there is too much resistance to turn crank. does anyone have an approximate value for torque that would be required by a torque wrench to rotate an assembled block? Could this be due to resistance of piston rings on freshly bored and honed bores? Which would then become smoother once piston rigs are seated in? Quote Link to post Share on other sites
MegstuBMW Posted May 31, 2020 Share Posted May 31, 2020 Yes, it is like you said, it is because of freshly bored and honed bores and these will become smoother once piston rigs are seated in. But still, you always want to check before assembly if all bores is in spec and during assembly if every surface, part and bearing is clean and chosen right. Quote Link to post Share on other sites
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