painted engine bay Dana 300 transfer case. non cut dash Removable fiberglass top Receiver hitch Poly gas tank New brake lines 4 wheel disc brakes/corvette master cylinder The original front and rear proto type Ratz fab bumpers Custom fabricated bed mounted roll bar Rebuilt 345 cu. have buckets available if you prefer Retro stereo. Features and modifications are as follows: A/C 727 Auto rebuilt Tilt wheel/ Borgensons steering shaft Custom interior with bench seat. I have restored many scouts and I always choose to drive this one. I would encourage anyone interested to stop and see in person the amount of work put into this Scout. I will list as many modifications as I can but I am sure I will leave out something. This Scout drives as true as any modern lifted vehicle due to the work and detail put into the front axle. opened up all four wheel openings and installed bed end caps on it prior to painting. It was a west Texas truck when I purchased and was in incredible condition. Sadly I have multiple other projects and this unit must go. I have restored and modified many Scouts. it has won First place at the Scout Nationals and has been a great vehicle and a real head turner. The kit includes 32 shims (16 x 0.030", 16 x 0.060") for V8 applications.Description for International Harvester Scout 1979ġ979 Scout Terra CVI conversion I have owned this scout for the last 10 years and it has been my driver. These shims can be a quick and easy alternative to resorting to different length pushrods. Excessive preload may be caused by a camshaft change, valve job, head/block resurfacing, thinner head gasket. The Crane rocker arm bridge shim kit 99179-1 includes two different thickness shims to decrease lifter preload by approximately 0.030", 0.060" or 0.090" depending on the combination of shims being used between the bridge and the cylinder head. Shorter pushrods reduce preload while longer pushrods increase it:Īs an alternative to installing shorter pushrods, the lifter preload can also be reduced by installing shims under the rocker arm bridges. Longer or shorter Crower chrome moly hardened steel pushrods are available to enable the correct lifter preload (0.030"-0.060") to be set when non-adjustable rocker arms are used. Stock pushrods are 9.625" long and have a tube diameter of 5/16". Adjustable roller rockers allow these corrections to be made quickly and easily. The use of high performance hydraulic or mechanical camshafts requires some form of valvetrain length adjustment to achieve correct clearance and geometry.
#Yella terra rockers jeep 2.5 install#
After you install longer-ratio rockers, be sure to check that the piston-to-valve clearance is adequate (minimum 0.040") before running the engine. Using longer-ratio rockers typically increases engine torque and HP in the mid range. Increasing rocker arm ratio (stock rockers are 1.6 ratio) increases the valve lift without having to change the camshaft.
#Yella terra rockers jeep 2.5 full#
Unlike stock stamped steel rockers, roller rockers maintain a constant indicated rocker arm ratio throughout the full valve lift because the center line of the roller stays constant and only its contact with the valve stem center line changes. The reduction in friction with roller rockers has additional benefits of reducing the operating temperature and foaming effect of engine oil to provide a cooler running engine. The use of needle roller bearings at the rocker fulcrum combined with a roller tip at the valve greatly reduces horsepower robbing friction in the valve train to provide a measurable power increase over standard rocker systems. The roller tip on roller rockers eliminates this side loading action. This inside force leads to irregular and rapid valve, valve guide, and valve seat wear in many engines. The traditional metal tip on standard rockers literally drags across the valve tip as the rocker opens and closes causing high side loading on the valve. A high rate of fulcrum wear, flexing, cracking, splitting and breakage are common problems that will result in power loss or possible piston failure due to detonation of the incoming air/fuel charge. Stock pressed steel rocker arms are prone to failure in high performance applications. Roller rockers are infinitely stronger than stock stamped steel rocker arms and are more resistant to bending and breakage under high spring pressures at high rpm.