Product information "Valve Pair (Intake & Exhaust) for Bashan & Shineray 250"
Precise Timing & Full Compression! – Valve Pair (Intake & Exhaust) for Bashan & Shineray 250
High-quality cylinder head components – Essential for engine overhauls
Restore your engine's peak performance! This valve pair consists of one intake valve and one exhaust valve, specifically designed for the popular 250cc single-cylinder engines from Bashan and Shineray. These components are crucial for correct gas exchange and optimal sealing of the combustion chamber. Made from heat-resistant and hardened steel, they offer maximum reliability under extreme thermal stress – whether for heavy-duty work or sporty trail rides.
Visual Compatibility: Before installation, perform a visual check. Measure the head diameter, total length, and stem diameter exactly and compare these values with your old valves.
Lapping/Grinding: New valves must be lapped into the valve seat of the cylinder head (using valve grinding paste) before final assembly to guarantee 100% tightness.
Valve Stem Seals: It is strongly recommended to replace the valve stem seals when changing the valves to prevent oil consumption and blue smoke.
Valve Clearance: After assembling the cylinder head, the valve clearance must be adjusted according to the manufacturer's specifications (Standard cold values often: Intake 0.10 mm / Exhaust 0.15 mm).
Inspection: Re-check the valve clearance after the first few hours of operation, as the valves may settle slightly during the break-in period
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