6 docs tagged with "head"

GPX/YX/LIFAN 120/124/140/150cc Type (Left) vs. Stock Honda CRF50/70 & Small China 50cc-110cc e22 Type (Right)

This cylinder head design accommodates CRF50 and Lifan-style intake manifolds and exhaust systems. Notable features include an intake port that is nearly level on the top, akin to a CRF50 or Lifan engine. Additionally, the exhaust studs measure 6mm.

When installing pit bike engines, you may encounter various types of exhaust pipes and head ports:

Round Cam Cover Type

engine cover

In a 4-stroke engine, the gear ratio between the crankshaft and the camshaft is invariably 21 ratio is crucial for the engine's proper functioning.