| Also known as | E3049 |
| Diagram | Fig. 1 — CRANKSHAFT AND CONNECTING RODS · ref 15 |
| Subsystem | engine bottom |
| Listed in parts books | 1960–1962, 1964–1965 |
Taper compression ring
A taper-faced compression ring for the piston, listed in Triumph crankshaft and connecting rod records from 1960-1965.
This is a taper compression ring, listed in the catalog under crankshaft and connecting rod records, and known under the older E3049 designation as well as the current 70-3049 number. In practice a compression ring like this rides in one of the piston's grooves, sealing the combustion chamber against the cylinder wall and helping keep compression up where it belongs instead of leaking past the piston.
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Our catalog record ties this part to appearances spanning 1960 through 1965, but it doesn't spell out which specific model that covers, so don't assume fitment just from the years listed. If you're rebuilding a top end and need to match ring sets, bring in your piston or cylinder specs, or give us a call and we'll work through fitment with you before you order.
Rings like this one wear as a set with the rest of the piston's ring pack, so if you're replacing one it's worth checking the condition of the others while things are apart.
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