| Diagram | Fig. 5 — CARBURETTOR — AMAL CONCENTRIC — SERIES 1900 · ref 51 |
| Subsystem | engine top |
| Listed in parts books | 1979–1980, 1985 |
Connector pipe - balance
A balance pipe connecting the two intake manifolds on the engine top end, part number 71-7051.
This is the balance pipe listed under Triumph part number 71-7051, shown in the parts book under the manifold and tappets figure. It's a connector pipe that ties the two intake manifolds together, letting both cylinders share intake pulse and helping the carbs pull evenly from a common point rather than fighting each other.
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The catalog only shows this number appearing once, tied to the 1979 model year in our records. Triumph later superseded this part number with 70-4792, so if you're chasing a replacement and your parts book or an old invoice shows either number, they point to the same physical piece.
If you're rebuilding the top end and sourcing a full manifold set, it's worth grabbing this along with your manifolds so the balance connection isn't left as an afterthought. Call the shop if you want us to confirm exactly which manifold configuration this pairs with before you order.
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