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Part 1
The following components (including bearings, rings, and wrist pin) are part of an I-4 engine. Their masses are shown here. What will be the weight of each of the Large Connecting Rod Ends once they are balanced?
Cylinder #
Piston Assembly
Connecting Rod Small End
Connecting Rod (Large End - Including bearing)
1
347
grams
130
grams
275
grams
2
341
grams
125
grams
271
grams
3
343
grams
131
grams
275
grams
4
352
grams
126
grams
279
grams
Question content area bottom
Part 1
Each large connecting rod end, when balanced, will weigh.enter your response here
grams.
Formulas
When preparing for engine crankshaft balancing: weigh each piston assembly, keeping the smallest weight and machine the others to match. Weigh each small end connecting rod, keeping the smallest weight and maching the others to match. Weigh each large end connecting rod, keeping the smallest weight and machine the others to match.
Piston Assembly Weight = Piston + wristpin + rings
Rotating Weight = Large end of connecting rod + bearings
Reciprocating Weight = Small end of connecting rod + piston assembly
Bobweight = Rotating Weight + StartFraction left parenthesis Reciprocrating Weight right parenthesis Over 2 EndFraction
Torque = Force * Length of lever arm
Force = Torque / Length of lever arm
Length of lever arm = Torque / Force
Horsepower = StartFraction Torque star RPM Over 5252 EndFraction
BTDC = Before Top Dead Center
ATDC = After Top Dead Center
BBDC = Before Bottom Dead Center
ABDC = After Bottome Dead Center
Intake Duration = # of Degrees the crankshaft turns when the intake valve is open
Exhauset Duration = # of Degrees the crankshaft turns when the exhaust valve is open
Valve Overlap = # of Degrees the crankshaft turns when the intake and exhaust valves are both open
Intake Centerline = take the intake duration / 2 and then adjust for the start of the valve opening
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