20-01-2024, 03:14 PM
A morsel of advice needed:
I'm assembling an engine with Phoenix 1 5/16" rods on a Phoenix crankshaft. The rods are metaled and the clamp screws or bolts look like this:
My instinct is to do them up to 30 ft/lbs with a drop of Loctite but does anyone have a definitive torque?
For what it's worth, the screws seem to be of North American origin, 5/16" UNF thread. One website has them listed with full specs but frustratingly, no tightening torque!
12 Point Flange Bolt Dimensions & Specs | AFT Fasteners
5/16"-24 x 1-1/4" 12 Point Flange Bolt | AFT Fasteners
AFT state that they're "made to Grade 9 specs". Comparing the figures, that's roughly equivalent to 12.9 metric spec; an M8 12.9 bolt would be 46.4 Nm or 34 ft/lbs.
Help!
I'm assembling an engine with Phoenix 1 5/16" rods on a Phoenix crankshaft. The rods are metaled and the clamp screws or bolts look like this:
My instinct is to do them up to 30 ft/lbs with a drop of Loctite but does anyone have a definitive torque?
For what it's worth, the screws seem to be of North American origin, 5/16" UNF thread. One website has them listed with full specs but frustratingly, no tightening torque!
12 Point Flange Bolt Dimensions & Specs | AFT Fasteners
5/16"-24 x 1-1/4" 12 Point Flange Bolt | AFT Fasteners
AFT state that they're "made to Grade 9 specs". Comparing the figures, that's roughly equivalent to 12.9 metric spec; an M8 12.9 bolt would be 46.4 Nm or 34 ft/lbs.
Help!