Re: Comp vs stock lifters
[Re: chall_70]
#1132862
12/12/11 10:05 PM
12/12/11 10:05 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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If your preload is good you might have to breakin another set of lifter(s) to quiet it. While idling press straight down on each rocker arm on the pushrod end w a wooden hammer handle & see if any of em get quieter & that ID's the problem ones EDIT Can take out the pump/p rod & run it for the several seconds of fuel in the bowl to ans that Q. MORE EDIT iirc the p rod length is 3.250" & should be very close to that & no cupped ends. First check your preload on base circle
Last edited by RapidRobert; 12/13/11 10:39 AM.
live every 24 hour block of time like it's your last day on earth
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Re: Comp vs stock lifters
[Re: MoJoe]
#1132865
12/13/11 04:00 PM
12/13/11 04:00 PM
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Joined: Jan 2006
Posts: 587
IL . usa
cjs69mope
mopar
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mopar
Joined: Jan 2006
Posts: 587
IL . usa
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Where is your oil Pressure at a hot idle ? are you useing stock rockers ? or rollers?
you may need to put a high volume pump or high pressure relief spring in the stock pump in the motor .
I have had a motor with roller rockers sound noisey due low oil pressure at idle .
1969 Dodge Charger
1969 Dodge Superbee
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Re: Comp vs stock lifters
[Re: MoJoe]
#1132866
12/13/11 05:38 PM
12/13/11 05:38 PM
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Posts: 75,043
U.S.S.A.
JohnRR
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I Win
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Quote:
Thats what it is, XE262 a pretty mild cam. Maybe if it was a little more agressive maybe the noise would not be so noticeable?. I really don't mind the noise so much, as long I do not have something else going on. I only took the left side apart, I'm just going to put it back together and drive it. Thanks
Do you have an adjustable valvetrain so you can set the proper lifter preload ?
XE's have fast ramps which is what makes them noisy.
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Re: Comp vs stock lifters
[Re: JohnRR]
#1132867
12/13/11 10:02 PM
12/13/11 10:02 PM
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Joined: Feb 2005
Posts: 4,316
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,316
Prospect, PA
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Quote:
Quote:
Thats what it is, XE262 a pretty mild cam. Maybe if it was a little more agressive maybe the noise would not be so noticeable?. I really don't mind the noise so much, as long I do not have something else going on. I only took the left side apart, I'm just going to put it back together and drive it. Thanks
Do you have an adjustable valvetrain so you can set the proper lifter preload ?
XE's have fast ramps which is what makes them noisy.
The 262 is a small cam, but the XE is an agressive lobe (fast ramps) for a hydraulic cam. It slaps the valvetrain around pretty good and hence the noise.
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Re: Comp vs stock lifters
[Re: MoJoe]
#1132870
12/14/11 04:40 AM
12/14/11 04:40 AM
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Joined: Aug 2003
Posts: 43,219
Bend,OR USA
Cab_Burge
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I Win
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Quote:
I have stock rockers and oil pressure is about 45/50 psi at idle.
 You probally need a set of adjustbale pushrods or adjustable rockers and proper pushrods to match to get the proper preload on the lifters. Before you reassemble the motor, pull all the pushrods out but the ones for #1 cylinder and then reinstall the rockers on the motor, don't start it up  Pull the coil wire and bump the motor over a little at a time while watching the rocker arms, what I want you to do is to get the motor to top dead center on the compression and or firing stroke. Once you get that see if you have any free play between the rocker arms and the pushrods, if you do you need longer pushrods or adjustables one so you can preload the lifters .030 to .060   IHTHs BTW, what year motor are you working on and did the rocker assembly come with the motor? Mopar use a 1/4 inch ball pushrod on the lifter end and a 5/16 ball end on the rocker end until 1966 and from then on a 5/16 ball pushrod end on both ends, they change the lifter size cups at the same time 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Comp vs stock lifters
[Re: Cab_Burge]
#1132871
12/14/11 06:16 AM
12/14/11 06:16 AM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Lincoln Nebraska
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Cab were those the ones w the reduced dia on one end?
live every 24 hour block of time like it's your last day on earth
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Re: Comp vs stock lifters
[Re: RapidRobert]
#1132872
12/14/11 08:51 AM
12/14/11 08:51 AM
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Joined: Jan 2003
Posts: 313
nj
MoJoe
OP
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OP
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nj
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When setting the preload is the lifter supposed to be filled with oil or empty? My Chevy buddies  tell me you have to "pump up them lifters" or fill them before they are installed. Instructions say to put in empty and run slow until they fill. Is the volume of oil always the same or does it vary according to the stroke? Another thing they say is just "replace the lifters"  , a new set is $100  How can a new or nearly new lifter be bad or go bad ? It seems to me that the only part subject to failure is the plunger spring. Could pumping the lifter before installing and running without the proper preload compress the spring so it fails or weakens leading to a collapsed lifter? I have not put it back together yet so I'll check the preload and go from there. When looking for proper pre load which end of the tolerance would be best in this case? I guess tighter would be better? Thanks
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Re: Comp vs stock lifters
[Re: MoJoe]
#1132873
12/14/11 11:11 AM
12/14/11 11:11 AM
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Joined: Jan 2003
Posts: 75,043
U.S.S.A.
JohnRR
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I Win
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Quote:
When setting the preload is the lifter supposed to be filled with oil or empty? My Chevy buddies tell me you have to "pump up them lifters" or fill them before they are installed. Instructions say to put in empty and run slow until they fill. Is the volume of oil always the same or does it vary according to the stroke? Another thing they say is just "replace the lifters" , a new set is $100 How can a new or nearly new lifter be bad or go bad ? It seems to me that the only part subject to failure is the plunger spring. Could pumping the lifter before installing and running without the proper preload compress the spring so it fails or weakens leading to a collapsed lifter? I have not put it back together yet so I'll check the preload and go from there. When looking for proper pre load which end of the tolerance would be best in this case? I guess tighter would be better? Thanks
First off stop listening to your chevy buddies.
The lifter doesn't need to be pumped up , the lifter has an internal spring that keeps the cup up against the retaining clip. you want at leasst the .030 of preload , what you need to an adjustable pushrod so you can check the length you need. If you have stock length pushrods and have had the heads and block trimmed on the rebuild you pushrods are most likely too long.
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Re: Comp vs stock lifters
[Re: JohnRR]
#1132874
12/14/11 12:42 PM
12/14/11 12:42 PM
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Joined: Jan 2003
Posts: 16,376
dogdays
I Live Here
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I Live Here
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Your chevy buddies are living in the last century. It has been at least 11 years since the cam manufacturers started telling us to not "pump them up" before installation. Also about the same time I started reading to not put the breakin lube on the sides of the lifter, just the end. Motor oil goes on the sides.
I also vote for pushrod length as being a probable cause. Get a couple of checking pushrods and set them to the right length, then have the pushrods made.
R.
Last edited by dogdays; 12/14/11 12:45 PM.
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Re: Comp vs stock lifters
[Re: aspenrt360]
#1132878
12/14/11 11:58 PM
12/14/11 11:58 PM
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Joined: Jan 2003
Posts: 75,043
U.S.S.A.
JohnRR
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I Win
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Quote:
it made noise before and now it is better? things don't tend to fix themselves, i would want to know why. cheers 
Please don't rain on the KARMA parade ...
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