Why is it important to keep connecting rod and cap pairs together?

Connecting rods and caps must remain a matched set. Since the caps are matched with their corresponding connecting rods, it’s essential to keep the caps in order during disassembly. That’s why, if no number is stamped, a mark with the cylinder’s corresponding number is made by the technician.

Why connecting rod has big end and small end?

A connecting rod for an internal combustion engine consists of the ‘big end’, ‘rod’ and ‘small end’ (or ‘little end’). A connecting rod can rotate at both ends, so that the angle between the connecting rod and the piston can change as the rod moves up and down and rotates around the crankshaft.

Why are connecting rods made of I section?

The I-section of the connecting rod is used due to its lightness and to keep the inertia forces as low as possible. It can also withstand high gas pressure. 2. Sometimes a connecting rod may have rectangular section.

Do you need to break in rod bearings?

Technically there is no metal to metal contact so no reason for a break in. That said it’s a tad prudent to take it easy to make sure the work was done right for the first 100 or so miles.

What are three advantages of using fracture split connecting rods in a diesel engine?

The material suitable for fracture splitting connecting rod should have the following properties: (1) little deformation in fracture splitting; (2) good intensity; (3) proper brittleness; (4) good machinability [1].

Why small end of connecting rod is connected to?

The connecting rod small end, which is connected to the piston via the piston pin, transmits the combustion pressure of the cylinder to a force on the crank pin. The connecting rod is thus a mechanical element that transforms the axial motion of the piston into the rotation of the crankshaft.

Why an I section is usually preferred to round section in case of connecting rods?

The I – section has greater strength than the round section without compensating it’s strength. HENCE TO REDUCE THE INERTIA WE TO REDUCE THE WEIGHT OF THE CON-ROD WITHOUT COMPENSATING THE STRENGTH OF THE CON-ROD. THE I-SECTION HAS GREATER STRENGTH THAN THE ROUND SECTION WITHOUT COMPENSATING STRENGTH.