BELT DRIVE SYSTEMS

 

Dan Jesel invented the Small Block Chevrolet Belt Drive back in 1982 with one goal in mind, to make the most accurate and durable cam timing system available. And in its 29 years of existence, our Belt Drives have often been duplicated, but never matched. Whether you’re running a 24 hour endurance race or a 5 second pass down the drag strip, you can count on JESEL to get you to the finish line first. Our drives reduce the amount of harmonics being transferred to the camshaft and have been proven over the years to outlast chain drives.

Introduced in 2009 and available for our more popular drives, JESEL has introduced a cost effective, solid upper pulley design drive. This new drive shares all of the components from our standard drive with the exception of the upper pulley. Cam timing is adjustable externally ± 8° in 2° increments.

THE ORIGINAL & STILL THE MOST TRUSTED BELT DRIVE SYSTEMS

 

BELT DRIVE FEATURES

Patented High Torq Drive™ reinforced belt operates dry and spins with less friction than timing chains or gear drives and also absorbs harmonics.

Hardware is Grade 8 Allen and Torx™ head design.

Crank Pulley is heat-treated steel and incorporates a High Torq Drive™ tooth configuration.

Teflon® coated high vacuum cam and crank seals.

Cam timing adjustment is made externally providing the easiest and most accurate tuning available.

Hard coated Billet Aluminum Upper Pulley features patented High Torq Drive™ tooth configuration.

Accessories available to run distributor drives, fuel pumps or oil pumps off front of cam.

Cam timing is externally adjustable.

2 Piece Upper Pulley Design is infinitely
adjustable ±10°.

 



ZERO THRUST CAM ADAPTOR

Introduced in 2000 and proven in all types of racing to reduce lifter damaging camshaft endplay.


FORD ZERO THRUST ASSEMBLY

Wear resistant bronze and Torrington needle bearings help to eliminate as much SB Ford camshaft endplay as possible.


SOLID UPPER PULLEY DESIGN

Solid Upper Pulley Design is
adjustable ±8° in 2° increments

 

 

Front Drive Combos

 

For those racers who run both Camshaft Belt Drives along with the JESEL Front Mount Distributor, JESEL offers a Front Drive Kit that incorporates the two units into one convenient part number. This value packed combination is available for our most popular applications and requires the use of a crank trigger style ignition system.

FRONT DRIVE STANDARD FEATURES
Fast And Easy Intake Manifold Changes
Isolates Cam Torsional Deflection
More Efficient Plug Wire Routing
Moroso Ignition Components

No Interference With Windshield Or Firewall
No Interference With Manifold Runners
Much Cooler Mounting Locatio

DISTRIBUTOR DRIVES

JESEL's Belt Driven Distributor eliminates timing inaccuracies due to camshaft deflection and cam walk. A typical distributor driven by the cam gear has a history or retarding the timing at high RPM due to camshaft twisting from torsion loads. When used in conjunction with a crank trigger and external ignition box this drive provides the engine builder with an accurate ignition system that will not deviate from the initial setting.


 

EXTREME SERIES DISTRIBUTOR DRIVES

Designed to handle the high cylinder pressures experienced in Pro Stock and Pro-Mod type engines, this distributor drive features the MSD® 5” Pro-Cap to ensure accurate spark delivery and to reduce spark scatter frequently experienced in high cylinder pressure applications. This drive is available for all popular applications and can be ordered with the optional Individual Cylinder Timing setup for use with electronic fuel injection systems.