A standard travel hydraulic lifter has 0.200 inches of travel so the goal when setting the adjustable pushrod is to set it at the halfway point of the hydraulic lifter which is 0.100 If you do not know the type of adjustable push rod you have and you need to re set them. The method I use at my shop is. 1) measure the threads per inch with a thread pitch gauge on removed adjustable pushrod. Let’s use an example of 32 threads per inch. 2) take the threads per inch in this example We will use 32 get out the calculator. 3) 1 divided by 32 equals 0.03125 times 3.5 turns equals 0.109 this sets the hydraulic lifter pre load depth at the halfway point in this case 0.109 4) make sure you have cam on base circle meaning the cylinder you are setting is on compression stroke both valves on cylinder are closed and hydraulic lifters are positioned on lowest point on cam which is the base circle. 5) turn out push rod adjustment until there is no up and down movement mark push rod and from there adjust out push rod 3.5 turns this will set hydraulic lifter at the halfway point of 0.109 a little past 0.100 which is fine. If you have other thread pitch per inch adjustable push rods just plug that number into above equation and it will give you the number of turns just plug in the number of turns until you get to the 0.100 which is the halfway point of a standard travel hydraulic lifter of 0.200 Hope this helps some viewers
Thanks for sharing, this is the best explanation of how to do this that ive watched.
Harley's new SE pushrods for the M8 Softail are 2 1/2 turns clockwise as per the 2019 instruction, if anyone is wondering.
Thank you for sharing. Most informative series yet. Watching your videos makes me feel the most confident when adjusting my Pushrods
A standard travel hydraulic lifter has 0.200 inches of travel so the goal when setting the adjustable pushrod is to set it at the halfway point of the hydraulic lifter which is 0.100
If you do not know the type of adjustable push rod you have and you need to re set them. The method I use at my shop is.
1) measure the threads per inch with a thread pitch gauge on removed adjustable pushrod.
Let’s use an example of 32 threads per inch.
2) take the threads per inch in this example
We will use 32 get out the calculator.
3) 1 divided by 32 equals 0.03125 times 3.5 turns equals 0.109 this sets the hydraulic lifter pre load depth at the halfway point in this case 0.109
4) make sure you have cam on base circle meaning the cylinder you are setting is on compression stroke both valves on cylinder are closed and hydraulic lifters are positioned on lowest point on cam which is the base circle.
5) turn out push rod adjustment until there is no up and down movement mark push rod and from there adjust out push rod 3.5 turns this will set hydraulic lifter at the halfway point of 0.109 a little past 0.100 which is fine.
If you have other thread pitch per inch adjustable push rods just plug that number into above equation and it will give you the number of turns just plug in the number of turns until you get to the 0.100 which is the halfway point of a standard travel hydraulic lifter of 0.200
Hope this helps some viewers
Just bought some Screaming Eagle push rods, they are 24 TPI.
RIVERA TAPER LITE Chromolly are 40 TPI for 4-5 complete turns off zero lash
Where do you live to get work done from you?
I live in central California about 60 miles north of Los Angeles on the coast. I’m about 60 miles south of Ventura California