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Shop/Category/Fig. 1 — CRANKSHAFT AND CONNECTING RODS/PISTON COMPLETE (7.9 : 1)
PISTON COMPLETE (7.9 : 1)
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DiagramFig. 1 — CRANKSHAFT AND CONNECTING RODS · ref 13
Subsystemengine bottom
Listed in parts books1979

PISTON COMPLETE (7.9 : 1)

Complete piston at 7.9:1 compression, from 1979 Triumph parts book records.

PN · 71-3778A

This is a complete piston, listed at a 7.9:1 compression ratio, from a Triumph parts book entry dated to 1979. The catalog files it under crankshaft and connecting rod records, though a piston is of course the part that rides in the cylinder bore above the rod, not the rod itself — that figure grouping is just how the book organized this section.

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"Complete" in a piston listing usually means the piston comes with its rings and pin rather than as a bare casting, though our record here doesn't spell out exactly what's included, so ask when you order if that matters to you.

Our catalog only shows this one appearing in 1979 records, and we don't have more detail on it beyond that. Call the shop and we'll confirm fitment before you order.

Not listed anywhere

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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