| Also known as | E3942 |
| Diagram | Fig. 4 — CYLINDER BLOCK AND HEAD, 3TA AND T90 · ref 16 |
| Subsystem | engine top |
| Listed in parts books | 1964–1965 |
Inner valve spring
Inner valve spring for the cylinder head, listed under 70-3942 (formerly E3942) in the 3TA/T90 cylinder block and head figure.
This is the inner valve spring for the cylinder head, as listed in the parts book under 70-3942 (the earlier E3942 form for those working from an older listing). The catalog places it in the CYLINDER BLOCK AND HEAD figure for the 3TA and T90 machines.
Read more
On these heads the valve assembly uses paired springs, an inner and an outer, working together to close the valve after the cam lifts it off its seat. This listing is specifically the inner one of that pair.
Our catalog record ties this part to appearances spanning 1964 to 1965. If you're sorting through a head with mixed-era parts, it's worth double-checking against your parts book before ordering, since valve gear on these small twins changed over the years.
Sorry if we got something wrong here. If you think this information isn't correct, .