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

Waterman Racing Components High-Flow Canister-Style Fuel Filter

Waterman Racing Components, the premier manufacturer of racing fuel systems and accessories, has introduced its all-new High-Flow Canister-Style Fuel Filter to provide effective fuel filtration at 40 GPM with minimal pressure drop while minimizing its physical footprint. In-line fuel filters are effective, but as flow rates climb, filter length must increase, becoming a limiting factor.

Waterman Racing Components, the premier manufacturer of racing fuel systems and accessories, has introduced its all-new High-Flow Canister-Style Fuel Filter to provide effective fuel filtration at 40 GPM with minimal pressure drop while minimizing its physical footprint.

In-line fuel filters are effective, but as flow rates climb, filter length must increase, becoming a limiting factor. This all-new canister-style filter provides maximum flow while minimizing size. While this filter was designed and engineered specifically to pair with Waterman Racing High-Flow Mechanical Fuel Pumps, it is purpose-built to allow extremely high flow rates with minimal pressure loss for any fuel system. The canister-style housing provides a vertical filter mount to ease mounting in tight engine bays while maintaining a large element surface area for extreme flow capability.

Manley Turbo Tuff Tri-Beam Rod For Lamborghini and Audi V10

Manley’s Turbo Tuff Tri-Beam rods are ideally suited to high-boost turbocharged and nitrous oxide assisted applications.

World Products Sportsman II Small Block Chevy Cylinder Heads

This high-performance cast-iron cylinder head has been continuously improved since its introduction over 20 years ago.

Erson Diesel Performance Valves

New valves from Erson Cams are designed for high performance diesel applications. Intake valves are made from 21-4N stainless alloy and exhaust valves are Inconel alloy with a stellite facing for maximum durability under the extreme heat and stress produced by turbocharged and supercharged diesel engines. Related Articles – Trend Performance H-Series Pushrods – CP-Carrillo

Trend Performance H-Series Pushrods

The new H-series pushrod solid design is available for all pushrod race engines operating under extreme stresses that do not oil the rocker balls through the pushrods.

Other Posts

Klotz COXOC Top-Treat Fuel Oxygenator

Klotz COXOC is a top-treat fuel oxygenator that improves engine performance, especially under low and mid-range rpm.

Proflow SuperMax+ Billet LS Intake Manifold

Billet CNC LS intake manifold kit, SuperMax Plus, for Holden Commodore LS3/L92. Features a 102mm bore in gloss black.

Tomei Forged Billet Crankshaft for Nissan VR Engine

Tomei’s forged, billet, five-counterweight crankshaft for the VR38DETT Nissan engine.

Expanded Inline Fuel Filter Offerings from System 1

System 1 Filtration Products offers a wide selection of inline fuel filters for competition and street applications. They range in size from the large diameter long filter at 9” x 2-1/2” to the compact “Pro Street” model that measures 4-1/2”in length by 2” diameter. All are CNC-machined from 6061-T6 aluminum billet at System 1’s Tulare,