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What is a rod journal?
Connecting rod journals are the part of the crankshaft where the connecting rods attach to. There is one rod journal for each piston/connecting rod in the engine. These journals have a machined surface so the connecting rod bearings can move smoothly as the crankshaft rotates.
What is crank journal?
on a crankshaft you have a crank journal (more commonly called a main journal) and a rod journal. the main journals of the crankshaft are where and how the crankshaft is held in the block. the rod journals are where your connecting rods are attached to.
What is difference between piston rod and connecting rod?
A connecting rod connects the piston to the crankshaft - A piston rod (also called a wristpin)connects the piston to the connecting rod.
What are the stock main and rod journal sizes on a ford 302?
I know that the stock connecting rod journal diameter is 2.123"
What is piston rod?
The piston rod is more usually called the con rod or connecting rod. It is connected at the top end to the piston with what is called a wrist pin. (The wrist pin is a cylinder of steel that slides through the side of the piston and through the top hole in the connecting rod.) At the bottom end the connecting rod mates up to the crankshaft. There is what is called a rod cap that goes on the bottom of the connecting rod to hold that rod onto the journal of the crankshaft. The connecting rod's purpose is to transfer downward and upward thrust between the piston and crank. The combustion of fuel drives the piston down to the crankshaft were it is converted to rotary force which drives your wheels. The wrist pin, is called a piston pin or gudgeon pin in the UK. The hole in the con-rod is commonly called the small or little end, and the other end where the cap holds it to the crankshaft is the big end.
What is a fork connecting rod?
A forked connecting rod is where two connecting rods and there pistons are connected to one crankshaft journal as is the case of the old side valve ford v 8 engine but i believe this practice is still used to-day----------------jim
What is whipping in connecting rod?
due to the inertia effect of the reciprocating masses, connecting rod suffers some perpendicular stress, which causes rapid vibrations at high speed, and tends to produce peculiar motion, this is called whipping action , it also causes bending action in connecting rod.
What is Connecting rods sewing machine and uses?
A rod that transmits motion or power from one moving part to another, especially the rod connecting the crankshaft of a motor vehicle to a piston. Also called pitman.
Why are crankshafts counterbalanced?
The weight of the piston, rings, and connecting rod is concentrated out at the rod journal. As the crank spins, it throws that weight around. The counterweight is on the opposite side from the rod journal to offset this weight. This is why when you replace pistons or rods, the crank is rebalanced by adding or removing material from the counterweight.
What happens when rod bearings are to tight?
When rod bearing clearance is too tight the end result is what is called a spun bearing -- definitely a bad thing. Bearing clearance is the difference between the inside diameter of the bearing and the outside diameter of the crankshaft journal to which it is clamped. The bearing is supplied pressurized oil fed by the oil pump, it should never touch the crankshaft journal but should always float on a wedge of oil. If the clearance is too tight the bearing touches or drags on the crankshaft journal and the journal grabs the bearing and spins it inside the housing into which it is clamped -- which in the case of a rod bearing is the big end of the connecting rod. Once this happens it all pretty much self destructs as it chews up the big end of the connecting rod and the crankshaft journal as well.
Excessive copper in the engine oil?
The big-end shells (connecting rod to crankshaft) and crank shaft journal bearings have failed.
What is a rod bearing?
Rod bearing (short for connecting rod bearing) Is the bearing where the connecting rod is attached to the rotating crankshaft.
