For those who are building up their 4.0L engines, roller hydraulic lifters to compliment our adjustable roller rockers and new push rods.
 
The Ford 4.0L/244 cid is the big brother in a family of Ford V6 engines that were built in Cologne, Germany, and have been used in domestic Fords since the early ’70s. The original 2.6L engine was replaced by the 2.8L, which was upgraded to the 2.9L and then finally bored and stroked to make it into the 4.0L that was used in the Rangers, Aerostars and Explorers starting in 1990.
 
These pushrod engines are all conventional 60° Vs with cast iron blocks and heads. The 2.6L block that began with a 3.54˝ bore and a 2.63˝ stroke ended up with a 3.952˝ bore and a 3.307˝ stroke by the time it grew into the 4.0L. The block was just about maxed out at this point, so the cylinders ended up pretty close together, and the rods were crowding the pan rail, especially on the 97TM blocks.
 
Some rebuilders have commented that making the 2.6L into a 4.0L was a lot like making the 265 Chevy into a 400; it’s a good analogy on a slightly different scale.
 
The pushrods and rockers on the 4.0L tend to show a lot of wear, even on engines with low miles. We suspect that there are two reasons for this problem: (1) The material in the rockers appears to be too soft, so they wear on the tip, and; (2) there’s not enough oil getting to the pushrod socket, so it gets worn out, too.
 
There’s pressurized oil at the rocker shaft to lubricate the rockers, but there’s no direct way for that oil to get to the pushrod sockets. There’s a passage in each rocker that allows oil from around the rocker shaft to migrate out to the small hole in the top of the pushrod socket, but it’s wide open on the outer end so there is no pressure there to feed the oil down into the socket.
 
Apparently the small hole in the pushrod socket that intersects this passage is supposed to meter oil down into the socket somehow, in spite of all the motion that’s trying to sling the oil out from the open end of the passage in the rocker.
 
 
Sold as a set of 12, both for Intake & Exhaust as a full-set