Question about lifters
HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
LIfters come filled with a light grade oil, so no, no need to pump up. They will rattle for a minute or so on the first start up while the light oil is pushed out and the motor oil is pumped in. Some go an extra step and "prime" the lifters with a vacuum pump, some let them soak in motor oil prior to start up but I drop them in, adjust and fire up the motor and let them rattle briefly.
Lots of videos on adjusting the push rods; just need to search. Most important to know is the push rod TPI (threads per inch), adjusting with piston at TDC on the compression stroke and setting pre load between .125" and .135".
Lots of videos on adjusting the push rods; just need to search. Most important to know is the push rod TPI (threads per inch), adjusting with piston at TDC on the compression stroke and setting pre load between .125" and .135".
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Tourer
Joined: Feb 2017
Posts: 290
Likes: 17
From: Saukville, WI
LIfters come filled with a light grade oil, so no, no need to pump up. They will rattle for a minute or so on the first start up while the light oil is pushed out and the motor oil is pumped in. Some go an extra step and "prime" the lifters with a vacuum pump, some let them soak in motor oil prior to start up but I drop them in, adjust and fire up the motor and let them rattle briefly.
Lots of videos on adjusting the push rods; just need to search. Most important to know is the push rod TPI (threads per inch), adjusting with piston at TDC on the compression stroke and setting pre load between .125" and .135".
Lots of videos on adjusting the push rods; just need to search. Most important to know is the push rod TPI (threads per inch), adjusting with piston at TDC on the compression stroke and setting pre load between .125" and .135".
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,048
Likes: 990
two schools of thought.
if the lifter has no oil, sometimes it is hard to determine if the cup is against the keeper clip and spring pressure will collapse the lifter.
one way is to have the lifter collapsed, adjust the p/r till you see the valve start to open then back off the adjustment to the desired setting by counting flats knowing tpi.
the other way is to make sure the lifter is unloaded and adjust the distance between the lifter cup and its keeper .030>.050. you do not want the cup and keeper to strike as the keeper will fail.
if the lifter has no oil, sometimes it is hard to determine if the cup is against the keeper clip and spring pressure will collapse the lifter.
one way is to have the lifter collapsed, adjust the p/r till you see the valve start to open then back off the adjustment to the desired setting by counting flats knowing tpi.
the other way is to make sure the lifter is unloaded and adjust the distance between the lifter cup and its keeper .030>.050. you do not want the cup and keeper to strike as the keeper will fail.
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