| Also known as | E3310, WW95044 |
| Diagram | Fig. 4 — CYLINDER BLOCK AND HEAD, 6T AND TR6 · ref 13 |
| Subsystem | engine top |
| Listed in parts books | 1960–1962, 1964–1965 |
INLET VALVE 650 1956-65
Inlet valve for the Triumph 650 twin cylinder head, catalog number 70-3310 (earlier form E3310).
This is the inlet valve for the 650 twin, listed in the parts books under the cylinder block and head section for the 6T and TR6. It's the component that opens to let the fuel/air mixture into the combustion chamber on the intake stroke, then seats back down to seal the cylinder for compression and power.
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The catalog carries this part as 70-3310, with the older letter-prefix form E3310 showing up in earlier books for the same physical piece. Catalog coverage on this one runs through the mid-1960s for the 650 twin.
Valves take a beating from heat cycling and seat wear over the years, so if you're doing a top-end rebuild it's worth checking this against the rest of your valve train rather than assuming the old one is still true. Confirm fitment against your bike's parts book before ordering, since Triumph's 650 line ran a long production span with detail changes along the way.
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