**** noisy valves
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Joined: Jul 2010
Posts: 74
Likes: 0
From: Syracuse, NY
You are misinterpreting. 32 threads per inch would mean 32 turns to get 1 inch of travel. Each turn would equal .0312 inches. .0312 times 3.2 equals .1 inches. This is the normal recommended preload. Most shops will tell you to go even deeper on the load like .140 to .150 as hillside stated. About 4.5 turns on a 32 thread per inch pushrod.
Road Warrior
Joined: Nov 2007
Posts: 1,984
Likes: 7
To back up a little
The normal Hydralic lifter Harley uses has about 0.200 inches of travel built into it.
The idea -normally-- is to get to the middle of this travel. Which from "just touching" to the bottom of the travel. Which is why you see 0.100 inch as a standard.
The reason folks talk about threads per inch a lot, is there are different threads per inch, depending on who makes the adjustable pushrod. So you have to know what you have first and go from there.
Sometime this is still too loose, as far as noise or rattle goes, and going a little deeper helps. In some cases.
Follow the instructions in the manual on how to do this.
If you do this yourself its a free thing to do.
The normal Hydralic lifter Harley uses has about 0.200 inches of travel built into it.
The idea -normally-- is to get to the middle of this travel. Which from "just touching" to the bottom of the travel. Which is why you see 0.100 inch as a standard.
The reason folks talk about threads per inch a lot, is there are different threads per inch, depending on who makes the adjustable pushrod. So you have to know what you have first and go from there.
Sometime this is still too loose, as far as noise or rattle goes, and going a little deeper helps. In some cases.
Follow the instructions in the manual on how to do this.
If you do this yourself its a free thing to do.
Last edited by Old Gunny; May 14, 2011 at 09:00 AM.
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Cruiser
Joined: Jul 2008
Posts: 182
Likes: 3
ok
i understand, i am going to order some
pricing on the screaming eagle pushrods is a little salty, are there any you guys recommend , also should i look at a different lifter, maybe better quality
are there any other culprits i should look at while doing this
i understand, i am going to order some
pricing on the screaming eagle pushrods is a little salty, are there any you guys recommend , also should i look at a different lifter, maybe better quality
are there any other culprits i should look at while doing this
Ultimate HDF Member
Joined: Feb 2007
Posts: 7,663
Likes: 7
From: Northeast Ohio
If you have 32k miles on the lifters, as long as you are in the engine, change them out. Could be that you have a weak lifter and this is what is causing the noise, but adjustable pushrods will also help.
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