Mercury Workshop Service and Repair Manuals

Connecting Rod: Specifications

Connecting rod-to-pin clearance - standard .................................................................................................................. 0.004-0.02 mm (0.0001-0.0007 inch)
Connecting rod-to-pin clearance - service limit ............................................................................................................................... 0.035 mm (0.0013 inch) 
Connecting rod pin bore diameter .............................................................................................................................. 21.017-21.031 mm (0.827-0.828 inch)
Connecting rod length (center-to-center) ..................................................................................................................... 138.06-138.14 mm (5.435-5.38 inch)
Connecting rod maximum allowed bend .............................................................................................................. 0.038 mm per 25 (0.0014  per 0.984 inch)
Connecting rod maximum  allowed twist .............................................................................................................. 0.050 mm per 25 (0.0019 per 0,984 inch)
Connecting rod bearing bore diameter ................................................................................................................... 53.015-53.035 mm (2.0872-2.0879 inch)
Connecting rod bearing-to- crankshaft clearance ........................................................................................................ 0.028-0.066 mm (0.001-0.0025 inch) 
Connecting rod side clearance ...................................................................................................................................... 0.100-0.30 mm (0.0039-0.0118 inch)