How to Rebuild a BSA Motorcycle Engine eHow UK

25 Апр 2015 | Author: | Комментарии к записи How to Rebuild a BSA Motorcycle Engine eHow UK отключены
BSA Victor

How to Rebuild a BSA Motorcycle Engine

BSA engines are rebuilt on a bench standard tools.

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One problem often when rebuilding classic is the availability of replacement parts. On the BSA, Triumph and Norton are straightforward four-…, single or cylinder engines with valves. The lower end consists of a crankshaft with bearings and rods. This combination of components equates to an absence of in terms of rebuilding.

Obtain the necessary parts and the BSA motorcycle engine on a workbench the manufacturer’s shop manual and tools.



Remove the top-end components, the rocker arm covers, overhead and cylinder head. All bolts are clockwise using sockets and a or open-end wrenches.

Position the tip of a screwdriver or steel chisel on the between the cylinder sleeves and the Tap the end of the tool with a hammer to the cylinder gasket. Lift the off the crankcase.

Insert the end of a flat screwdriver one end of a piston sleeve and against the clip at the opposite end of the sleeve. Tap the end of the with a hammer to pop the ring out. Tap the end of the piston sleeve the screwdriver and hammer until the is halfway out of the piston.

Remove the from the end of the piston rod.

to the workshop manual and split the Remove the main crank and bearings. Loosen the connecting rod and remove the piston rod from the

Have the cylinders and cylinder serviced by a motorcycle shop. new valve guides, keepers and springs with the cylinder servicing. Have the cylinders or bored to accept the particular of the new pistons.

Place the rocker arm and crankcase casings in a parts-cleaning Clean the parts using cleaner and wipe the parts with rags. Receive the parts from the motorcycle

Obtain the new pistons, piston and crank bearings.

BSA Victor


Attach the piston rod to the and thread the connecting rod bolts into the base of the rod. to the workshop manual and tighten the rod bolts to the specified torque a torque wrench.

Install the crankshaft and bearings in the crankcase. the cases and tighten the case to the specified torque. Attach the new to the piston rod using the new piston and clips.

Put the new rings on the piston.

Position the new gasket on the top of the crankcase. Attach a ring compression tool to the Position the cylinder sleeve the piston and slide the piston the cylinder bore.

Remove the tool and push the cylinder place on the crankcase.

Refer to the manual and install the cylinder and valve assembly. Torque the bolts to the specified torque. the rocker arm cover and tighten the to the specified torque.

Fill the engine with motor oil.

BSA Victor
BSA Victor
BSA Victor
BSA Victor


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