Hydraulic lifter preload

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If I can get a thread and a half showing with a .045 + plunger depression, I’m good!
 
Bakerlite said:
I've got an idea...
How to set your lifter preload.
Click to expand...
I've been a member here for a good 15 years, got lots of help from lots of good people,I've never had a bad taste in my mouth until now.
I am far from a master mechanic, but i know my way around a classic car.
I pay my yearly gold membership to help the forum going , I actually even bought other members a membership also to help the forum..
I did use the search tool before asking my question, maybe I should have spent more time searching..
You have turned the thread into a **** show
 
Darren said:
I've been a member here for a good 15 years, got lots of help from lots of good people,I've never had a bad taste in my mouth until now.
I am far from a master mechanic, but i know my way around a classic car.
I pay my yearly gold membership to help the forum going , I actually even bought other members a membership also to help the forum..
I did use the search tool before asking my question, maybe I should have spent more time searching..
You have turned the thread into a **** show
Click to expand...
Let's try to stay positive. There's a lot of good information in this thread, too. .....and regardless of WHAT WHO says, there are different ways of adjusting preload and even on hydraulics, a difference between a light or heavy preload can make small differences in how the engine performs. Solids of course, show more response to those changes. I've just always had the best luck and performance using a light touch with only 1/4 to 1/2 turn.....which normally puts the preload in the .025-.040 range.

That's simply my experience. I'm sure others have had success doing it differently, and that's great.
 
RustyRatRod said:
Let's try to stay positive. There's a lot of good information in this thread, too. .....and regardless of WHAT WHO says, there are different ways of adjusting preload and even on hydraulics, a difference between a light or heavy preload can make small differences in how the engine performs. Solids of course, show more response to those changes. I've just always had the best luck and performance using a light touch with only 1/4 to 1/2 turn.....which normally puts the preload in the .025-.040 range.

That's simply my experience. I'm sure others have had success doing it differently, and that's great.
Click to expand...
Thanks for the reply, I will be digging more into it next week or so..
 
mopowers said:
For what it's worth, if your adjusters have a 20 tpi pitch, one full turn is 0.050" if the adjusters are 24 tpi, one turn is ~0.042".
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Thank you .that's another question I'll need an answer to. I contact comp and find out .
 
Darren said:
Thank you .that's another question I'll need an answer to. I contact comp and find out .
Click to expand...

You can figure it out yourself very easily. If you don't have a thread pitch gauge, measure the od of the adjusters. If they're 3/8", they're 24tpi, if they're 7/16", they're 20tpi.
 
Now there’s a few things to write down.

mopowers said:
For what it's worth, if your adjusters have a 20 tpi pitch, one full turn is 0.050" if the adjusters are 24 tpi, one turn is ~0.042".
Click to expand...

mopowers said:
You can figure it out yourself very easily. If you don't have a thread pitch gauge, measure the od of the adjusters. If they're 3/8", they're 24tpi, if they're 7/16", they're 20tpi.
Click to expand...
 
mopowers said:
You can figure it out yourself very easily. If you don't have a thread pitch gauge, measure the od of the adjusters. If they're 3/8", they're 24tpi, if they're 7/16", they're 20tpi.
Click to expand...
Easy enough.. saves me pulling out the dial indicator.. thanks
 
I'm hard headed. I'd still measure. LMAO
 
Oh and one more useful tidbit. If your lifters have the really crappy thin wire retainers holding the lifter plungers in, I would err on a little heavier preload adjustment. If they have the heavy duty snap rings, you can go a light touch like I described. Adjusting light preload with the thin wire retainers and there's always a risk that the plunger "could" come all the way to the top of its travel and pop the retainer out and then out comes the plunger. That would suck. So if it has the thin wire retainers, maybe go 3/4 to 1 full turn down.
 
1/16th to 1/8th inch preload.
 
Last edited:
Bakerlite said:
I have to ask... did you click on the link?
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So bud you have almost 5000 messages on this forum.. and you still have not answered my question on what you would set the preload at? You know the information..
What do you say hero?
 
Babyblue66 said:
Isn't it nice how some people will post a 1000 words to criticize a question or post, rather than a few words to answer it. Some people live very boring lives.
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What's boring is seeing the same basic questions from the "spoon feeder brigade".
Lazy and Fat, that's the future of the human race..
I have the freedom to criticize their laziness, so I do.
If you don't like it, then tough titties..
 
I don't look at it necessarily as laziness, but maybe wanting another viewpoint(s). That's another reason I'm glad the admins around here don't delete threads. They all have the chance to come back to the top and get discussed some more. Discussion is a good thing......that is to say a good discussion is a good thing.
 
Rusty, remember the days when you had to read a service manual, or spend 5 minutes visualizing something in your head so you could understand how it worked and how to proceed with what you wanted to do? You know, exercise the brain, train yourself to be better at what your doing??
Well forget that.. Now it's pull out the "E Brain" (IPhone) from their pocked and hope it or someone else will do all the hard lifting.. Then complain when someone has the ordacity to ridicule them over it..
 
Bakerlite said:
Rusty, remember the days when you had to read a service manual, or spend 5 minutes visualizing something in your head so you could understand how it worked and how to proceed with what you wanted to do? You know, exercise the brain, train yourself to be better at what your doing??
Well forget that.. Now it's pull out the "E Brain" (IPhone) from their pocked and hope it or someone else will do all the hard lifting.. Then complain when someone has the ordacity to ridicule them over it..
Click to expand...
I still read printed manuals all the time.
 
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