| Also known as | E4786 |
| Diagram | Fig. 1 — CRANKSHAFT AND CONNECTING RODS · ref 34 |
| Subsystem | engine bottom |
| Listed in parts books | 1964–1968 |
EXHAUST CAMSHAFT T100S, T100C
Exhaust camshaft for the T100S and T100C, part number 70-4786 (formerly E4786).
This is the exhaust camshaft for the T100S and T100C, listed in the catalog as part number 70-4786, with the older E4786 form showing up in earlier parts books. It's a Triumph part, and the catalog ties it specifically to the T100S and T100C variants.
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The camshaft controls the timing and lift of the exhaust valves, working off the timing gear at the front of the engine. On these twins the intake and exhaust cams are separate pieces running on their own bushings, so it's worth making sure you're ordering the exhaust cam and not its intake counterpart when you're rebuilding the timing chest.
Our catalog record spans appearances across several years of listings for this pair of models. If you're not certain whether your particular engine uses this exact cam profile, give us a call before you order and we'll go over what your parts book shows.
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