| Diagram | CYLINDER BLOCK AND HEAD, TR7RV |
| Subsystem | engine top |
| Listed in parts books | Not catalogued by year yet |
Inlet rocker box
Inlet-side rocker box for 1973 750 unit twins, housing the rocker spindle and rockers over the inlet valve.
This is the inlet rocker box for 1973 750 unit twins, the housing that sits atop the cylinder head over the inlet valve gear and carries the rocker spindle and rockers for that side of the engine. It's a Triumph part, showing up in the parts book under the CYLINDER BLOCK AND HEAD listings for the TR7RV and T140V.
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The rocker box bolts down to the head and caps off the valve train on the inlet side, keeping oil where it belongs and giving the rockers a solid mounting point. Since this one's tied to the 1973 catalog entries specifically, if you're working on a bike from around that time it's worth double-checking your head casting and bolt pattern against what you pull off before ordering.
We don't have a lot more written detail on this one beyond its place in those two figures, so if you've got questions about how it mates up to your particular head, give us a call and we'll walk through it with you.
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