Caution is advised when working on B1BC5 DOHC VTEC engines, as the manufacturer recommends using a connecting rod bolt stretch gauge to measure the stretch of the rod bolt during tightening, which is essential to avoid severe engine damage. Before installing piston/connecting rod assemblies, ensure the cylinder walls are clean, the top edges of each cylinder are chamfered, and the
Crankshaft is in place. Remove the cap from the number one connecting rod, clean the bearing surfaces, and avoid touching new bearing inserts with fingers. Clean the back side of the new upper bearing insert and install it in the connecting rod, ensuring the tab fits into the recess without using lubricant. Repeat this for the lower bearing insert in the rod cap. Position piston ring gaps correctly, lubricate the piston and rings, and use a piston ring compressor to guide the piston into the cylinder. Rotate the crankshaft to BDC and apply engine oil to the cylinder walls before gently inserting the piston/connecting rod assembly. Tap the ring compressor to ensure contact with the block and gently drive the piston into the cylinder while guiding the connecting rod into place. After installation, check the connecting
Rod Bearing oil clearance using Plastigage, ensuring the bearing faces are clean and applying assembly lube before reinstalling the rod cap and tightening the nuts to the specified torque. Repeat the process for remaining pistons/connecting rods, keeping all components clean and ensuring the correct orientation of the piston. After all assemblies are installed, rotate the crankshaft to check for binding and measure the connecting rod endplay, ensuring it meets specifications to avoid the need for resizing at a machine shop.