Details
| Diagram | Fig. 1 — CYLINDER HEAD · ref 23 |
| Subsystem | engine top |
| Listed in parts books | 1969–1972 |
BSA Balance pipe — inlet
Inlet-side balance pipe for the cylinder head, connecting the two inlet tracts on a twin-carb setup.
PN · 70-8213
This is the balance pipe for the inlet side of the cylinder head, listed in the catalog under the cylinder head and rockers figures. On a twin-carb head this pipe ties the two inlet tracts together so both cylinders draw evenly and idle stays steady instead of hunting between the two carbs.
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