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Automotive glossary

Flat-Tappet Camshaft

A flat-tappet camshaft works with lifters that slide on the cam lobes instead of rolling, common in older engines.

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What is Flat-Tappet Camshaft?

Cam and lifters wear together and must be broken in carefully. They need oil with good anti-wear protection. Roller lifters replaced them in many modern engines. Avoid long idling during the first minutes of running a new cam.

How it works

The lifter face slides across the lobe, with a slight offset making it rotate to spread wear.

Why it matters for your car

Do not reuse old lifters on a new camshaft. Follow the break-in procedure with suitable oil.

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