smokenjoe50
Active Member
When I torqued my fuel return line banjo bolt it snapped. I had to order a new one and that bolt cost 65 bucks
A quote from this website: http://www.killerbmotorsport.com/index_files/TechnicalTidbits.htmTorque wrenches do not give a direct measurement of the clamping force in the screw, and indeed much of the force applied is lost just to overcoming friction.
More accurate methods for setting the clamping force rely on defining or measuring the screw extension; for instance, measurement of the angular rotation of the nut can serve as the basis for defining screw extension on thread pitch.
Since you have determined by experimenting that the banjo bolt fails when torqued to 90 inch-pounds, maybe the maximum torque should be 70 inch-pounds (based on the above references).When you feel a bolt yield while being tightened, take it out and throw it away-don't even look at it
When I torqued my fuel return line banjo bolt it snapped. I had to order a new one and that bolt cost 65 bucks