Jesel Cam Belt Drive Systems - Engine Builder Magazine

Jesel Cam Belt Drive Systems

Built with quality materials, Jesel’s camshaft belt drives feature several performance and valvetrain stability enhancements over traditional timing chains and gear drives.

Dan Jesel invented the small block Chevrolet camshaft belt drive back in 1982 with one goal in mind – to make the most accurate and durable cam timing system available. In its almost 40 years of existence, Jesel’s camshaft belt drives have often been duplicated, but never matched. Whether you’re running a 24-hour endurance race or a 4-second pass down the drag strip, you can count on Jesel to get you to the finish line first. 

Built with quality materials, the company’s camshaft belt drives feature several performance and valvetrain stability enhancements over traditional timing chains and gear drives. The Gates patented High Torq Drive reinforced belt spins dry on a steel crank pulley and a hard coated aluminum upper pulley and helps isolate crankshaft harmonics to the valvetrain. Teflon-coated high vacuum cam and crank seals are long lasting and insure the extreme amount of vacuum found in today’s race engines stays sealed in the crankcase. Cam timing can be externally adjustable ±10° in minutes to dial in the power curve, and cam thrust can be reduced to as little as .001” with available dual thrust cam adapter assemblies. 

Another advantage is the ability to swap out cams directly through the front cover. Cam swaps can be performed quickly without needing to remove the oil pan by simply removing the upper cam pulley and un-bolting cam seal plate saving countless hours during dyno sessions. 

With over 42 applications from OEM blocks to aftermarket raised cam blocks, you can be certain that the camshaft belt drive used to win countless championships will provide you with years of durable race winning service.  

Jesel also offers belt-driven distributor systems, which are a direct bolt-on accessory to Jesel’s camshaft belt drives. This component eliminates timing inaccuracies due to camshaft deflection and cam walk. A typical gear-driven distributor running off the camshaft has the possibilty of altering the initial ignition setting at high rpm due to the camshaft twisting from torsional loads. By driving the distributor drive directly off the camshaft pulley, ignition timing stays constant and will not deviate from the initial settings. Another benefit to using a belt-driven distributor is the ability to set the engine back further in the chassis without worrying about firewall or windshield interference. A crank trigger firing system along with an external ignition box is required for all belt-driven distributor systems.

Lastly, Jesel offers complete front drive combos for the engine builder planning on using a camshaft belt drive as well as a belt-driven distributor. These front drive combos incorporate both units as one convenient part number. In addition to being an ordering convenience, the front drive combo is easier on your budget as the units are discounted when bundled together. The combo can be ordered with either Jesel’s Pro Series or Extreme Series distributors with or without the available Individual Cylinder Timing system. As with all Jesel distributor drive systems, a crank trigger-type firing system as well as an external ignition box is required.

For more info: https://www.jesel.com/

You May Also Like

Holley Terminator X Max EFI Kit for Godzilla Engines

This Terminator X Max EFI kit for Godzilla engines is latest in Holley’s growing portfolio of engine swap solutions.

Holley Terminator EFI

Holley Performance Brands, a leader in automotive aftermarket performance solutions, has announced the release of the Holley Terminator X Max electronic fuel injection (EFI) kit for the popular Ford Godzilla engine. The system is the latest offering in Holley’s growing portfolio of engine swap solutions for performance enthusiasts. The advanced engine management system is specifically designed for classic muscle car and truck owners looking to install and run the powerful 7.3L Ford Godzilla engine with ease. 

Cometic Duramax Top End Gasket Kit

Cometic’s Duramax gasket kit includes: 4.130″ bore, .047″ MLX cylinder head gaskets.

Cometic Duramax gaskets
ACL Oil Pump Catalog

ACL RACE Series oil pumps are designed with high output and high volume capabilities.

Race Gas Diesel Performance Plus

Race Gas Diesel focuses specifically on cetane, oxygen and lubrication.

race gas diesel
B&B Performance Big Block Chevy Intake Manifold Spacers

The spacer kit includes end rails and are available for either rectangular port or oval port heads.

intake spacer

Other Posts

Victory 1 Adds CrN Valve Coating

Chromium Nitride (CrN) coating is exceptionally effective in high-stress racing applications as it increases hardness and improves lubricity.

Victory 1 valve coatings
AMSOIL’s New Specially Formulated Car Care Products

AMSOIL has launched a line of premium car-care products engineered to help vehicles shine brighter.

AMSOIL car care
CP-Carrillo Pistons for Polaris RZR Pro 2.0L Engines

CP-Carrillo’s Polaris pistons are available in a variety of compression ratios to suit different engine configurations.

CP Polaris RZR pistons
Schaeffler TorCon 6L80 Torque Converter

LuK TorCon 6L80 offers best-in-class performance, backed by Schaeffler’s years of experience as a leader in the field of motion technology.

Schaeffler torque converter