(732) 901.1800  /  Sales@Jesel.com  /  Rocker Application Advice  /       

PRO STEEL SERIES SHAFT ROCKERS

You could make a strong argument that out of all forms of racing, endurance racing is the most stressful on a valvetrain. Endless hours running at 9000+ RPM, constant gear changes and intense operating conditions compromise the fatigue life of even the best aluminum rocker arm. Through extensive engineering and FEA analysis, Jesel has designed a steel bodied rocker with less deflection and a better moment of inertia than similar aluminum rockers. These advancements in rocker design allow engine builders the opportunity to develop a more aggressive cam profile and valvetrain package.

All Jesel Pro-Steel rocker systems are custom engineered for your specific application utilizing critical details such as spring rates, lobe lifts, pushrod angles and ratio requirements. The rocker geometry is designed to minimize roller movement on the valve tip. Each rocker body is manufactured from premium billet steel alloy and undergoes a through hardened heat treating process for durability. All of the steel components are processed with REM/ISF® Isotropic Superfinish to remove asperities inherent in the manufacturing process and to safely remove microscopic peaks, greatly reducing points at which stress fractures can begin.

Jesel offers two distinct steel rocker body designs, the Mohawked J2S and the Pocket I-Beam J3S. The J2S style is designed more like our traditional Mohawk aluminum bodied rockers and is best suited for use with a threaded type adjuster. The J3S body can be custom engineered for applications where minimum rocker mass and lowest moment of inertia is a concern. Either design can be fastened using a traditional shaft and bolt mounting system or our new box style stand.


ZERO-THRUST STEEL STANDS

Jesel Zero Thrust Steel Stands provide the engine builder with a rigid, height adjustable, encapsulated stand and shaft assembly. The clamping force provided by the dual mounting studs surpasses the traditional 5/16” shaft bolt.

ROCKER APPLICATIONS

GM R07 - GM SB2.2 - GM LS1 - GM LS7 - GM
BBC - GM DRCE 3 - Ford C3 - Ford D3 - Dodge P7 -
Dodge P8 - Dodge Pro Stock Hemi - TRD Phase
9/14 - BBC Spread Port Exhaust Rockers -
All Pro 13° - Brodix 11x
2024 Series Aluminum
Custom Alloy Aluminum Body
Heat Treated Alloy Steel Body
Tool Steel Cup Adjuster
Tool Steel Ball Adjuster
Adjusterless Bronze Pushrod Seat
ARP 12pt Adjuster Nut
Needle Shaft Bearings
Centerless Ground .561” Shaft
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Standard
Standard
Optional
Optional
Standard
Standard
Standard
Press-Pin Nose Roller
Clip-Pin Nose Roller
.335” Wide Needle Nose Roller
.250” Wide Needle Nose Roller
Solid Body Design
.370” Milled Lightening Slot
MoHawk Beam
Profiled Rocker Tail
Valve Spring Relief Pocket
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Standard
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Standard
Standard
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ARP Mounting Hardware
Limited Rocker Ratios
Choice of Rocker Ratio
Choice of Adjuster Offset
Alloy Steel Stands
Custom Stand Configurations
Zero-Thrust Stand Assembly
Zero-Thrust Box Style Stand
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Standard
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Standard
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Standard
Standard
Optional
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Name 
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Cylinder Head 
Type of Racing 
Maximum RPM 
Open Spring Pressure 
Net Valve Lift 
NA / Blower / Nitrous