| Diagram | Fig. 3 — CYLINDER BLOCK – PISTONS – CRANKSHAFT · ref 33 |
| Subsystem | engine bottom |
| Listed in parts books | 1973 |
Tappet block – left ('010" oversize)
Left-side .010 in. oversize tappet block for the Triumph engine's cylinder block/tappet area.
This is a left-side tappet block for the Triumph engine, listed at .010 in. oversize. The tappet block is the housing that guides the tappets as they ride against the camshaft lobes and push up on the pushrods, so it lives down in the cylinder block area right along with the pistons and crankshaft, which is exactly where the parts book files it.
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The .010 oversize designation means this block was machined up from standard to true up a bore that had worn or been reground, so it is meant to go with tappets fitted to match that oversize, not standard-size tappets. Our catalog record only shows this part appearing once, tied to 1973, so we don't have a broader model spread to point to.
If you're rebuilding the bottom end and need to know whether your engine calls for a standard or oversize tappet block, best to check your own measurements or give us a call before ordering, since we can't confirm fitment beyond what's in this single catalog entry.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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