Roller camshafts have often caused problems with distributor (driven) gears.

Most roller cams (solid or hydraulic) are made from a billet steel core, so their distributor drive gears are steel, too. Their steel construction makes them incompatible with traditional iron gears on distributors.

To avoid having chunks of steel or cast iron gears breaking off and going throughout your engine, the traditional solution has been to use a "sacrificial" bronze distributor gear which wears more quickly but is soft and doesn't send hard shrapnel throughout your engine, where it will cause more damage.

But as a bronze gear wears, bronze shavings can still wind up in your oil and risk causing other issues and may end up leaving you stranded when the gear ultimately wears to the point that it no longer turns your distributor and oil pump.

Nitemare Performance is proud to offer BOP Engineering's carbon composite gear for distributors with a .500-inch shaft, like billet MSD distributors. It's compatible with either steel or iron distributor drive gears. In fact, we install the BOP composite gear on all our crate engines that we equip with a billet MSD distributor, because in our testing, we've seen no appreciable wear of the composite gear, so no chunks or shavings to get spread through the engine to cause other problems.

Nitemare Performance stocks composite gears for MSD (and similar) distributors with a .500-inch shaft.

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