Is it OK to tighten a rod cap by torque?
“Tightening the fasteners by torque value alone is not an acceptable method for installing the rod cap and should never be used. Since torque value is only measuring the resistance to turning, lube amount and type can introduce too many variables to make sure that the fastener is properly preloaded,” says Skeen.
What’s the best way to install rod caps?
“Although stretch is the recommended method of securing the fasteners when installing the rod caps, we do offer specifications for torque + angle tightening. This method requires a small initial torque, followed by a specific number of degrees and relies on the precise pitch of the threads to properly stretch the fastener,” says Skeen.
Do you need a torque wrench for a connecting rod?
If you stop partway through, it can provide inaccurate readings. It is also to have a connecting rod vise to hold the rod stable during the stretch measurement process. Having a reliable, accurate torque wrench is critical, but not enough on its own.
What does a connecting rod fastener do on a cylinder?
Each connecting rod fastener is tasked with maintaining its clamp load whether the connecting rod is at bottom dead center (BDC) or top dead center (TDC) in the cylinder bore. At TDC, the fastener’s difficult job is to prevent the connecting rod from separating at its big end and permitting the piston to crash into the cylinder head.
How to determine the torque of a connecting rod?
STEP 1: Your Crower connecting rods came with a connecting rod specification tag. Check the tag to find the rod bolt part number used to fasten your connecting rods. Rod bolt length listed here is the measurement from under the head to the end. STEP 2: Use the chart below to determine the recommended lubricant, rod bolt stretch and torque amounts.
What are the specifications for Crower connecting rods?
Please read this entire page before starting to install your rods. STEP 1: Your Crower connecting rods came with a connecting rod specification tag. Check the tag to find the rod bolt part number used to fasten your connecting rods. Rod bolt length listed here is the measurement from under the head to the end.
How do you Torque a roller lifter rod?
Using the above table, torque the rod bolts to achieve the required amount of stretch for your application. Record this torque spec as this is the exact torque spec that you will be using to install your rods in the motor.
Do you have to torque your rod bolts?
Torqueing your rod bolts without pre-determining the required torque to achieve the correct rod bolt stretch is not recommended. However if this is the only tightening method available to you, DO NOT EXCEED THE TORQUE AMOUNT INDICATED FOR YOUR BOLTS. NOTE: Your Crowerods are totally rebuildable.