Repair of engines model «E» of the car Mazda 323 (BF)

Main technical characteristics of the engine
General information Four-stroke, four-cylinder, in-line petrol engine, transversely mounted at the front of the vehicle. Main technical characteristics Cylinder head The...

Technical characteristics of the cylinder block
The cylinder block is cast from cast iron and is one piece with the cylinders. Cylinder block height, mm: 205. Non-flatness of the block joint surface, no more than, mm:...

Technical characteristics of the crank mechanism
Crankshaft Cast iron crankshaft, five-bearing with five counterweights. Main journal diameter, mm: nominal: 49,940-49,956; wear limit value: 0.05. Diameter of connecting...

Technical characteristics of the valve timing mechanism
The engine uses a valve timing mechanism with an overhead camshaft, the drive of which is carried out by a double-row chain. The chain tension is adjusted automatically...

Tightening torques of main threaded connections, kgf m
Cylinder head mounting bolts: 8.7-9.3. Camshaft sprocket fastening nut: 7.0-8.0. Cylinder head cover mounting bolts: 0.20-0.35. Chain tensioner housing mounting bolt:...

Adjusting clearances in the valve drive mechanism
Warm up the engine. Remove the cylinder head cover. Turning the crankshaft with a key by the head of the crankshaft pulley bolt, set the exhaust valve of the 1st...

Removal the cylinder head
Disconnect the wires from the battery terminals. Drain the coolant from the radiator and cylinder block. Remove the air filter. Disconnect the plug connectors and...

Installing the cylinder head
Turn the crankshaft until the piston of the 1st cylinder is at top dead center (TDC). Install a new cylinder head gasket without using sealant. Install and center the...

Disassembling the cylinder head
When disassembling the cylinder head, mark the relative positions of the parts to be removed so that they can be put back in their original places when reassembling....

Replacing valve guide bushings
Measure the gap between the valve guide bushings, which should be no more than 0.2 mm. If the gap is larger, remove the valve stem seal and use a drift to press out the...

Grinding of valve seats and valves
Grind valves suitable for further use (the operation should only be performed in a repair shop). Grind the valve seats using a special tool. Grind the valves to the...

Cylinder head assembly
Assemble the cylinder head in the reverse order of disassembly. Replace the valve guide oil caps.

Cylinder head parts
Cylinder head details: 1 - cylinder head; 2 - cylinder head cover gasket; 3 - oil deflector; 4 - cylinder head cover; 5 - oil filler plug; 6 - cylinder head gasket; 7 -...

Removal the power unit
Place the car on the lift and apply the parking brake. Disconnect the wire from the negative terminal of the battery. Remove the engine hood. Remove the battery and its...

Installation of the power unit
Note: It is recommended to replace the differential case seals, clamps and self-locking nuts each time the power unit is removed. Insert the power unit using a lifting...

Powertrain suspension
Powertrain suspension: 1 - cross member for mounting the power unit; 2 - Upper support cushion bracket; 3 - top cushion; 4 - Upper suspension bracket; 5 - front...

Timing mechanism parts
Details of the valve timing mechanism: 1 - crankshaft; 2 - chain; 3 - camshaft sprocket; 4 - chain tensioner shoe; 5 - chain tensioner; 6 - camshaft; 7 - rocker arm...

Removal the camshaft drive chain
Place the engine on the stand. Loosen the oil pan mounting bolts and remove the oil pan mounting bolts from the camshaft drive cover. Remove the cylinder head cover....

Installing the camshaft drive chain
Make sure that the crankshaft and camshaft are in the position corresponding to the TDC of the piston of the 1st cylinder. Place the chain on the crankshaft and camshaft...

Disassembling the engine
Place the washed and cleaned engine on a disassembly stand. Remove the cylinder head, as stated above . Remove the camshaft drive chain ( see above ). Disconnect the...

Engine assembly
Checking the technical condition Installation clearances, wear limits and repair dimensions of parts are given in the subsection " Detailed technical specifications "....

Cylinder Block Parts
Cylinder block details: 1 - cylinder block; 2 - oil pan; 3 - drain plug; 4 - camshaft drive cover; 5 - crankshaft main bearing caps; 6 - crankshaft rear bearing cover; 7...

Crank mechanism parts
Crank mechanism parts: 1 - crankshaft; 2 - flywheel; 3 - connecting rod; 4 - piston; 5 - piston pin; 6 - piston rings; 7 - oil pump drive sprocket; 8 - crankshaft...

Model E engine layout
Model "E" engine layout

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