V-TWIN ROCKERS

 

60° FOUR CAM & 45° TWIN & FOUR CAM

One of the weakest areas of a typical V-Twin engine is the valvetrain. The stock type rocker arms along with high spring loads and 14” pushrods encounter a severe amount of deflection robbing the engine of horsepower, rpm and valvetrain stability. Finally, there is a solution. Our kits include innovations such as a 2.000” pivot length rocker secured to a .625” thick steel base plate  that corrects geometry and ensures that the rocker can be torqued properly to prevent deflection. JVT also offers large diameter, cutting-edge, solid roller lifters and custom tapered pushrods. A .937” diameter roller lifter that features a pressure fed oiling circuit provides a constant flow of oil to the roller needle bearings. Tapered modular pushrods with a center diameter of .562” and a wall thickness of .120” reduces pushrod deflection to a minimum. So what’s the gain from all of this? Increased rpm, horsepower and a valvetrain that’s not beating itself to death.

Standard Features:

Tool Steel Ball Adjusters
Shotpeened 70 Series Billet Aluminum
Timken Thrust Bearings
Timken Needle Bearings
.250" Wide Needle Roller
Stands Available in .025" Increments
ARP Hardware
Spring Steel Torsion Tube

Rocker Box Features:

Billet Upper Rocker Box is designed for maximum frame-to-cover clearance
Lower Rocker Box is uniquely machined to each cylinder head for correct geometry
.625” thick steel plates secure rocker systems to cylinder head
Valve Spring Oilers

 

 

All JVT twin cam rocker systems are designed on an individual basis. In order to 45° & 60° FOUR CAM SYSTEMS AVAILABLE FOR
Lozano Bros. Porting P.S. 45
S&S Pro Stock
Ultra Pro Machining Billet
Baisley Cast XR Head

45° TWIN CAM SYSTEMS AVAILABLE FOR
S&S TWIN CAM HEAD


Kit Contents:

Upper Rocker Box
Lower Rocker Box
Steel Base Plate
Intake Rockers
Exhaust Rockers
Rocker Stands
ARP Mounting Hardware


All JVT twin and four cam rocker systems are designed on an individual basis. In order to properly fit your head with the ultimate rocker arm system, it is highly recommended that you ship your cylinder heads to us.

 

 

 

60° S&S BILLET PRO STOCK

The George Smith / George Bryce designed S&S® Billet 60° Pro Stock engine has been dominant in NHRA and AHDRA competition. There's no doubt that this "beautiful beast" is a masterpiece that will be a force to be dealt with for years to come. We at JVT appreciate high quality engineering and are proud to make available a valvetrain system that will enhance the performance of this already awesome power-plant. By replacing the stock aluminum pedestals, machining the heads for additional mounting hardware and installing billet steel stands, the rocker arms can be fastened to the cylinder head more securely. We've also incorporated advanced rocker arm technology by utilizing our J2K series design to include as standard features a .250" wide needle bearing nose roller to reduce friction, a shotpeened finish 70 series aluminum body for increased strength, a MoHawk lightening beam for the lowest moment of inertia, and a full radius ball-type adjuster to reduce friction between the adjuster and pushrod. The 2.000" pivot length rocker bodies can be ordered with a ratio up to 2.2:1 and the billet steel stands are available in height increments of .050" to adjust for proper rocker geometry. JVT also uses ARP hardware throughout its rocker systems to properly secure the components.


Kit Contents:
Intake Rockers
Exhaust Rockers		 Rocker Stands
ARP mounting Hardware

 

 

 

 

J2S STEEL ROCKER & STAND

As an alternative to the aluminum bodied J2K system, the engineers in the Jesel JVT department designed a steel bodied rocker system to further reduce rocker deflection. The J2S MoHawk designed steel body features a 2.000" pivot length rocker and is supplied standard with a Tool Steel Ball Lash Adjuster and a .250" wide Needle Bearing Nose Roller. The stability of the rocker is greatly increased with the use of the steel box anchored to the cylinder head by the way of dual 7/16" ARP studs. These custom built rockers can be tailored to your specific valvetrain needs. Call for details.