| Also known as | E3001 |
| Diagram | Fig. 4 — CYLINDER BLOCK AND HEAD, 6T AND TR6 · ref 16 |
| Subsystem | engine top |
| Listed in parts books | 1960–1962, 1964–1965 |
Inner valve spring (white spot)
Inner valve spring (white spot) for Triumph 6T, TR6, and T120 cylinder heads, paired with an outer spring on each valve.
70-3001 is the inner valve spring marked with a white spot, as identified in the cylinder block and head parts-book figures for the 6T, TR6, and T120. On these engines each valve is fitted with a pair of concentric springs, and this is the inner one of that pair, working alongside its outer counterpart to keep the valve seated and control its motion off the cam.
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The catalog also lists this part under the older factory number E3001.
Our catalog record ties this spring to appearances spanning 1960 to 1965 across the 6T, TR6, and T120 figures. Valve springs are a wear item that lose tension over time, so if you're rebuilding a head from this era it's worth checking the set rather than reusing old springs on faith.
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