Head and Rocker Arm Assembly
At 6:54 in
Lake Speed's Forgotten NASCAR Engine is READY TO RIP! 90's Ford C3 with Modern Tech Dyno Test
What happens here
The cylinder heads, now with updated valvetrain components and ported, are installed on the engine block. The head bolts are torqued in a specific pattern to ensure even pressure and proper sealing of the head gaskets. This is done with careful attention to detail, indicating the precision required for race engine assembly. After the heads are installed, the rocker arms and their stands are assembled. The new, smaller valve springs are noted for their modern design, contributing to valve train stability. The lash is set on the solid lifters using a feeler gauge, aiming for a very specific gap (e.g., 0.020 inches) to ensure proper valve operation without excessive noise or wear. This involves careful adjustment of each rocker arm.
Goal: Assemble and properly torque cylinder heads and set valve lash.
Tools and materials
- Cylinder Heads — Installation on the engine block
- Dowfil 732 Silicone Sealant Dowfil — Sealing engine components
- Feeler Gauge — Measuring and setting valve lash
- Head Gaskets — Sealing between the block and cylinder heads
- Rocker Arms — Part of the valve train assembly
- Rocker Stands — Supporting the rocker arms
- Torque Wrenches — Accurate tightening of head bolts and rocker arm fasteners
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