Re: hydraulic lifters not pumping up
[Re: DEERLODGE]
#1914196
09/17/15 01:20 AM
09/17/15 01:20 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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if the rockers (both banks) are being fed then the horizontle main galleries & therefore the lifters (which are upstream) are being fed also. I'm assuming you did a cam breakin procedure when you dropped the new lifters (unrelated to the noise tho). Only thing coming to mind is, see what your preload is: get a lifter on base circle. Set a small thin 6" steel scale ruler across on the valve cover rails close to the pushrod. make a sharpie mark on the ruler edge & slide it over fast to make a witness mark on the pushrod. unbolt the rocker shaft evenly so it rises evenly (horizontally) till the pushrod JUST stops moving upward )if it goes sideways it'll skew your test). repeat a witness mark then remove the rocker shaft/rockers all the way off & lift out the pushrod & measure the distance between the two marks. you're sure nothing else is rubbing/touching correct & that it is lifter clatter? I wouldn't think the preload would be borderline not enough then something finally reduced it that last bit/locked it solid (in effect no preload). Holler how it turns out
live every 24 hour block of time like it's your last day on earth
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Re: hydraulic lifters not pumping up
[Re: dartphil]
#1914594
09/17/15 07:24 PM
09/17/15 07:24 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Filling or priming hydraulic lifters is a great way to bend pushrods when installing the rocker assmblies, not so good a way to properly fill them though. If they aren't filling up from engine oil pressure then lack of priming or filling them isn't the problem.
I would take the soft lifters out, disassemble, clean and inspect them.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: hydraulic lifters not pumping up
[Re: dartphil]
#1914675
09/17/15 08:48 PM
09/17/15 08:48 PM
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Joined: Jan 2003
Posts: 25,200 Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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A lot of lifter suppliers are recommending not soaking new lifters and to install them out of the box. If the top of the engine is getting oil feed then here is what I have learned to do to help get lifters to pump up. It is messy but the vast majority of the time works. Run the engine with the valve cover off and put downward pressure on the pushrod end of the rocker. This helps the lifter bleed the air out and take a prime. Also some times all it takes is to run the engine and then shut it down and let sit for a few minutes, restart and the lifters have bled out and pump up on restart.
Clean it, if it's Dirty. Oil it, if it Squeaks.
But: Don't fix it, if it Works!
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Re: hydraulic lifters not pumping up
[Re: dartphil]
#1915690
09/19/15 03:31 PM
09/19/15 03:31 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Phil, interesting topic! post what it ends up being
live every 24 hour block of time like it's your last day on earth
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Re: hydraulic lifters not pumping up
[Re: dartphil]
#1937462
10/23/15 07:48 PM
10/23/15 07:48 PM
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Joined: Aug 2003
Posts: 43,303 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,303
Bend,OR USA
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Last edited by Cab_Burge; 10/23/15 07:49 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: hydraulic lifters not pumping up
[Re: dartphil]
#1937513
10/23/15 09:06 PM
10/23/15 09:06 PM
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Joined: Jan 2005
Posts: 12,424 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,424
Kalispell Mt.
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I just went through soomething similar on a 340 a guy brought in and found the caps out of the hole behind the cam thrust plate, it was driving us nuts because it was only one lifter and just at 800 or so idle then it would go away with reving it a bit. It had 12-15 PSI at idle and it has always been enough in other engines I have seen but this one just would not quit the ticking. The pressure would jump right on up to 70 with a few RPMs. After putting in the plugs it now holds 50PSI hot idle and zero ticking.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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