Cam Followers, commonly called Lifters or tappets, are between the camshaft and the pushrods.

Overview

http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/lifters-2.jpg

The camshaft pushes up on the lifters, opening the valves.

WIKI go to Wikipedia

Installation/Replacement

Always use new lifters with a new or rebuilt camshaft, and follow the break-in procedure.

Main: Camshaft replacement

Inspect for Damage

Good lifter on right, bad lifter on left.

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Cam lobe worn due to insufficient lubrication (or incorrect break-in)

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Large Diameter Lifter

At right is the standard valve lifter, but the umbrella diameter is not enough in the cam where the lift quantity is large. The left's umbrella diameter is larger:

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Tomei Lightweight lifter☁(軽量リフター) 33.600円 per set (about $350 USD).

Tomei Hollow Valve Lifter -- 36 grams

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B-Pro Lifter

An ecomonical lifter from B-Pro, is lighter (50g) than the stock A-series lifter (60g+).

This B-Pro lifter was already discontinued.

☁

Lightweight lifter☁ 33.600yen/per set.

http://www.datsun1200.asia/resources/upload/products/lifter2010330.jpg☁

Part Numbers

13231-H1001 Stock Cam Follower $15.64 USD * superceded 13231-H1000 * Fits B110, B210, B310 * Fits A12, A13, A14, A15 * About 60 to 63 grams each http://s237.photobucket.com/albums/ff245/chrislyons8/th_IMGP2255sml.jpg

13231-M0821 Lightweight Cam Follower * A high-performance alternative to the stock cam lifters. Each is 24 grams lighter than 13231-H1001. * 32 to 37 grams

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