Adjustable push rods
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Elite HDF Member
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From: Mansfield Texas
Adjustable push rods
Question....Say you have the Screaming Eagle Adjustable Push rods, Different brand lifters and cam.
Adjust to the push rod Manufacture specs or ?
Adjust to the push rod Manufacture specs or ?
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From: pacific northwest
I just used the specs that the MFG provided (used S&S quickees for my cam swap), worked great, minimal valve noise and quiet start ups.
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From: pacific northwest
the base circle should not matter, first set your adjustable push rods to 0 lash then add what ever number of turns called for by the MFG of your adjustable rods.
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From: Mansfield Texas
Originally Posted by MRFREEZE57
the base circle should not matter, first set your adjustable push rods to 0 lash then add what ever number of turns called for by the MFG of your adjustable rods.
Adjustable push rod base circle is zero no matter.
Think I'm going to add another 1/2 turn.
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running adjustables with hydraulic lifters???
the most important thing is that the plunger does not contact the retainer clip. with cam/lifter on base, adjust the p/r till there is at least .010 clearance between plunger top and retainer clip. if you know plunger travel, you can set 1/4 of the stroke if you want. remember, what ever the clearance, you must factor in rocker ratio and this will give you valve stem clearance. why is this important?? well the lifters will bleed down when engine is off and lifter under spring pressure so on start up, there will be extra clearance so expect some valve train noise and the valve will not open fully.
i run rivera 40tpi p/r and one turn = .025 and i run 3 flats down = .012. i also run s&s lifter limiters so i am more solid cam than hydraulic. this clearance give minimal valve train noise and since the lifter can not bleed down no issues and i can run way past the hd rating 6.8k rpm. running this setup also alters the hydraulic profile which in my case helps for what i do.
the most important thing is that the plunger does not contact the retainer clip. with cam/lifter on base, adjust the p/r till there is at least .010 clearance between plunger top and retainer clip. if you know plunger travel, you can set 1/4 of the stroke if you want. remember, what ever the clearance, you must factor in rocker ratio and this will give you valve stem clearance. why is this important?? well the lifters will bleed down when engine is off and lifter under spring pressure so on start up, there will be extra clearance so expect some valve train noise and the valve will not open fully.
i run rivera 40tpi p/r and one turn = .025 and i run 3 flats down = .012. i also run s&s lifter limiters so i am more solid cam than hydraulic. this clearance give minimal valve train noise and since the lifter can not bleed down no issues and i can run way past the hd rating 6.8k rpm. running this setup also alters the hydraulic profile which in my case helps for what i do.
Last edited by bustert; Feb 7, 2018 at 09:41 AM.
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