ALL NEW! YELLA TERRA ULTRALITE 1.8 RATIO ROLLER ROCKERS - SUIT VIPER V10 ENGINES
Ultralite
Yella Terra’s exclusive Ultralite rocker arm, shaft and pedestal system offers 50% less nose weight than the factory rocker system, the result being greater RPM potential without compromising strength or durability. The perfect low-maintenance substitute for factory rocker arms which utilise problematic cage-less bearings, solid non-roller tips and heavy steel bodies.
Yella Terra Ultralite is ideal for high revving street applications when coupled with factory/lightweight aftermarket springs. Manufactured and assembled in Australia using the highest quality materials and componentry consistent with those found in our Platinum race series.
Our wide range of true ratios allows you to achieve high lift without relying solely on your camshaft… a trend many engine builders and racers alike are adopting to relieve the inertia on lifters and pushrods generated by aggressive and often violent ramp rates required to make big lift.
Don't fall victim to bearing/trunnion upgrades which only address half the shortcomings of OEM rockers.
Why Choose Ultralite?
- Built to withstand 400lbs* max open spring pressure
- Oversize full-complement caged bearings designed for oscillating (rocking) loads, paired with oversize precision ground trunnions to reduce friction.
- Intricately balanced lightweight arms ensuring vital valvetrain stability - focusing attention on the harmony of the entire engine. 50% less oscillating nose weight eliminates valve float in upper RPM range allowing for higher rev ceiling.
- Extruded from aircraft grade aluminium, perfect for dissipating excess top-end heat.
- Proven bolt-on shaft mount design that mounts both inlet/exhaust to common shaft, effectively increasing footprint and clamp load twofold without any further cylinder head modification.
- Various ratios available, catering for every camshaft grind. High ratios allow for additional lift on stock and aftermarket camshafts.
- Chrome moly steel hardened and ground roller tips of generous diameter (positively retained by internal circlip) preventing abrasion of valve tips and guides commonly seen with non-roller tip rockers. Allows for smoother, quieter operation. Maintains lash and reduces necessary and tedious engine maintenance.
Kit Includes:
20 - all new 1.8 Ratio Ultralite Rocker Arms Fully assembled with Torrington Bearings, and ground Roller Tips on 10 Specifically Machined Shafts.
20 - 8mm Studs & 12 Point Locking nuts to secure each pair of Assembled arms to your Cylinder Heads.
20 - D Saddles to Suit the Original in-cast Rocker Pedestals
Assembled and ready for pre-lubrication and installation!
*NOTE* For VIPER SRT V10 Engines with 3/8" Hardware Please Request YT 6780SRT *
Tech Spec
| PART NO | YT 6780 |
| BRAND | ULTRALITE |
| APPLICATION | FACTORY REPLACEMENT/STREET |
| MAX OPEN SPRING PRESSURE | 400lbs |
| MAKE | CHRYSLER/DODGE |
| ENGINE | V10 VIPER |
| MOUNTING STYLE | SHAFT MOUNT |
| ROCKER ARM RATIO | 1.8 |
| STUD SIZE | 8mm |
| ADJUSTABLE/HYDRAULIC | HYDRAULIC |
| ROCKER ARM STYLE | FULL ROLLER |
| ROCKER MATERIAL | ALUMINIUM |
| ROCKER ARM BODY STYLE | STANDARD |
| ROCKER ARM NUT STYLE | 8MM STUD & 12 POINT LOCKING NUT |
| MAX SPRING DIAMETER | 1.437" |
| INLET OFFSET | YES |
| QTY | SET OF 20 |
| NOTE | SUITS FACTORY IN-CAST PEDESTALS ONLY. |
