Ford roller rocker arms are pedestal-mounted from the factory. Which means that they sit on a hollow aluminum pedestal with an extended bolt operating down by the rocker, fulcrum, pedestal and into the head. They’re non-adjustable and torqued to 20 foot-pounds. They work well sufficient for many conditions; however, from a racing standpoint, they have sure pitfalls. They flex below heavier than standard loads, akin to a bigger cam, and are weaker than stud-mounted rockers.
Ford Ford Roller Rocker Arms Installation Instructions
1. Take away the air intake duct from the throttle physique utilizing a screwdriver. Take away the throttle linkage from the throttle body by pulling the throttle linkage open all the way and eradicating the cables by hand. Remove all electrical connections and anything else hooked up to the intake plenum.
2. Remove all of the bolts within the consumption plenum, using the appropriate-sized socket and protecting in thoughts that there are completely different-sized bolts. Carry off the plenum. Remove all the bolts in the valve covers, using a socket, then elevate off the covers. Establish the rocker arm to be replaced if just one. If all of them should be changed, observe this process on every roller rocker arms.
3. Turn the crankshaft clockwise with a socket and ratchet until the roller rocker arms strikes all the way down to open the valve then rises back as much as shut the valve. When the valve rocker is all the way up, rotate the crank another 90 degrees. This can be a tried and true approach of adjusting both pedestal- and stud-mounted rockers accurately. This process only takes an extra 5 minutes, but the roller rocker arms will all be correct. This methodology locations the camshaft on the heel of the lobe every time.
4. Remove the center bolt situated in the middle of the rocker arm. Carry the roller rocker arms off with its fulcrum and pedestal. Insert the bolt by way of the brand new roller rocker arms, the fulcrum and the pedestal. While holding this trio, insert the bolt into the threaded hole within the cylinder head and thread it in three turns.
5. Align the rocker so the concave end is on the top of the push rod, and the roller finish is in the middle of the valve. Maintain a hand on the rocker to safe it in place while the bolt is threaded all the way down so far as possible with the other hand. Wiggle the rocker to ensure the push rod is in place, not solely beneath the rocker but in the lifter as well. Be certain the pedestal is correctly in place then torque the center bolt to 20 foot-pounds. Once the bolt is tightened so far as possible by hand, it takes less than one 360-degree flip of the bolt to succeed in 20 foot-pounds. If it hasn’t reached 20 foot-pounds when the bolt has turned one complete revolution, take away it and place a shim below the fulcrum or replace the bolt if it has stretched. An accurate adjustment shall be impossible. These shims can be bought by both the supplier or some auto components stores.
6. Substitute any extra rockers in the same manner, turning the crankshaft for every rocker.