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Re: Comp Lifter Noise/Clacking at 2k RPM Symptoms/Questions
[Re: kz5rt2]
#759421
07/27/10 02:07 PM
07/27/10 02:07 PM
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Joined: Nov 2005
Posts: 1,943
San Angelo, Texas, U.S.A.
1968RR
top fuel
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top fuel
Joined: Nov 2005
Posts: 1,943
San Angelo, Texas, U.S.A.
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The high-lift extreme energy cams are notoriously noisy. 
"When I'm in a slump, I comfort myself by saying if I believe in dinosaurs, then somewhere, they must be believing in me. And if they believe in me, then I can believe in me." - Mookie Wilson
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Re: Comp Lifter Noise/Clacking at 2k RPM Symptoms/Questions
[Re: 1968RR]
#759422
07/27/10 02:09 PM
07/27/10 02:09 PM
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Joined: Aug 2009
Posts: 121
Detroit, MI
kz5rt2
OP
member
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OP
member
Joined: Aug 2009
Posts: 121
Detroit, MI
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Wouldn't I be hearing noise on both banks? Instead it's more noticeable on cylinder #1's location?
Last edited by kz5rt2; 07/27/10 02:10 PM.
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Re: Comp Lifter Noise/Clacking at 2k RPM Symptoms/Questions
[Re: kz5rt2]
#759423
07/27/10 02:11 PM
07/27/10 02:11 PM
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Joined: Mar 2003
Posts: 4,848
Memphis
HemiRick
master
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master
Joined: Mar 2003
Posts: 4,848
Memphis
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Did you look down into the motor and try to see the cam lobe in question? If not please do ASAP.
Take care,
Rick
68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Comp Lifter Noise/Clacking at 2k RPM Symptoms/Questions
[Re: kz5rt2]
#759426
07/27/10 02:19 PM
07/27/10 02:19 PM
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Joined: Mar 2003
Posts: 4,848
Memphis
HemiRick
master
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master
Joined: Mar 2003
Posts: 4,848
Memphis
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If a lobe failed they fail immediately just about. 300 miles is plenty....You should be able see something looking down thru the holes in the heads.
You just need to see a small part of the surface of the lobe...
Take care,
Rick
68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Comp Lifter Noise/Clacking at 2k RPM Symptoms/Questions
[Re: kz5rt2]
#759427
07/27/10 02:25 PM
07/27/10 02:25 PM
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Joined: Jan 2003
Posts: 75,095
A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,095
A Banana Republic near you.
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Quote:
Well, I just completed an engine break on a new 440RB build. I am running comp extreme energy cam and lifters.
During the 45min ~2000rpm cam break-in using comp's cam break in additive, there was no clacking present. However, I now have ~300 miles on the engine and noticed the clacking is present . I know for a fact the rockers were zeroed.
I just pulled the valve cover off, It sounds as if the noise is coming from #1. I noticed the intake pushrod for #1 was loose! I have a ball and cup style pushrod and adjustable rockers. The ball/stem rocker adjustments were tight as can be. I re-zeroed the rockers and put it back together. The noise is quiter, but still present around 2k, it sounds fine at idle.
Does anybody have a suggestion on where to dig in?
Is this a hyd or solid flat tappet cam ?
PULL THE INTAKE! I just went thru this with an XE268 but it started about 5 mins into break in, at 7 mins we pulled the plug and popped the covers, all seemed fine nothing loose. Pulled the intake and inspected all the lobes and you could see that #5 exh was starting to loose some of the surface of the lobe near the nose , the underside of the lifter showed faint marks as if the lifter rotation was stopping and starting .
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Re: Comp Lifter Noise/Clacking at 2k RPM Symptoms/Questions
[Re: JohnRR]
#759428
07/27/10 02:29 PM
07/27/10 02:29 PM
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Joined: Aug 2009
Posts: 121
Detroit, MI
kz5rt2
OP
member
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OP
member
Joined: Aug 2009
Posts: 121
Detroit, MI
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Quote:
Quote:
Well, I just completed an engine break on a new 440RB build. I am running comp extreme energy cam and lifters.
During the 45min ~2000rpm cam break-in using comp's cam break in additive, there was no clacking present. However, I now have ~300 miles on the engine and noticed the clacking is present . I know for a fact the rockers were zeroed.
I just pulled the valve cover off, It sounds as if the noise is coming from #1. I noticed the intake pushrod for #1 was loose! I have a ball and cup style pushrod and adjustable rockers. The ball/stem rocker adjustments were tight as can be. I re-zeroed the rockers and put it back together. The noise is quiter, but still present around 2k, it sounds fine at idle.
Does anybody have a suggestion on where to dig in?
Is this a hyd or solid flat tappet cam ?
PULL THE INTAKE! I just went thru this with an XE268 but it started about 5 mins into break in, at 7 mins we pulled the plug and popped the covers, all seemed fine nothing loose. Pulled the intake and inspected all the lobes and you could see that #5 exh was starting to loose some of the surface of the lobe near the nose , the underside of the lifter showed faint marks as if the lifter rotation was stopping and starting .
Hydraulic flat tappet.
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Re: Comp Lifter Noise/Clacking at 2k RPM Symptoms/Questions
[Re: kz5rt2]
#759429
07/27/10 02:33 PM
07/27/10 02:33 PM
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Joined: Jan 2003
Posts: 75,095
A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,095
A Banana Republic near you.
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Quote:
Quote:
Quote:
Well, I just completed an engine break on a new 440RB build. I am running comp extreme energy cam and lifters.
During the 45min ~2000rpm cam break-in using comp's cam break in additive, there was no clacking present. However, I now have ~300 miles on the engine and noticed the clacking is present . I know for a fact the rockers were zeroed.
I just pulled the valve cover off, It sounds as if the noise is coming from #1. I noticed the intake pushrod for #1 was loose! I have a ball and cup style pushrod and adjustable rockers. The ball/stem rocker adjustments were tight as can be. I re-zeroed the rockers and put it back together. The noise is quiter, but still present around 2k, it sounds fine at idle.
Does anybody have a suggestion on where to dig in?
Is this a hyd or solid flat tappet cam ?
PULL THE INTAKE! I just went thru this with an XE268 but it started about 5 mins into break in, at 7 mins we pulled the plug and popped the covers, all seemed fine nothing loose. Pulled the intake and inspected all the lobes and you could see that #5 exh was starting to loose some of the surface of the lobe near the nose , the underside of the lifter showed faint marks as if the lifter rotation was stopping and starting .
Hydraulic flat tappet.
Expand on "I re-zeroed the rockers" please.
Either way don't run it till you inspect all the lobes , What cam is it , is it a stock off the shelf grind?
Did you, or whomever assembled the engine, assemble the valvetrain and rotate the engine over make sure you had good and complete lifter rotation before starting the break in ?
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Re: Comp Lifter Noise/Clacking at 2k RPM Symptoms/Questions
[Re: JohnRR]
#759430
07/27/10 02:39 PM
07/27/10 02:39 PM
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Joined: Mar 2007
Posts: 3,287
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,287
West Coast, USA
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You may have the wrong length pushrods if the adjusters are bottomed out. Are you preloading the the lifter plunger at all? Most hydraulic lifters require a pretty exact preload, which is significantly more preload than just zero clearance of the rocker assembly. How much preload are you running on the lifter plunger?
Big block Mopars are good in that you can use a lifter pulling tool (if you're running stock heads) to extract the lifters and get a clear view of the lobes without pulling the intake. Back in the day, we used them when swapping cams in a few hours with the engine in the car. Had to pull the radiator etc, but not the intake. It saves some time.
I have 2 different styles of the tool. One is a light simple tool, the other is heavy duty for pulling stubborn lifters on old engines with varnish build-up.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Comp Lifter Noise/Clacking at 2k RPM Symptoms/Questions
[Re: jbc426]
#759431
07/27/10 02:53 PM
07/27/10 02:53 PM
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Joined: Aug 2009
Posts: 121
Detroit, MI
kz5rt2
OP
member
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OP
member
Joined: Aug 2009
Posts: 121
Detroit, MI
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Quote:
You may have the wrong length pushrods if the adjusters are bottomed out. Are you preloading the the lifter plunger at all? Most hydraulic lifters require a pretty exact preload, which is significantly more preload than just zero clearance of the rocker assembly. How much preload are you running on the lifter plunger?
Big block Mopars are good in that you can use a lifter pulling tool (if you're running stock heads) to extract the lifters and get a clear view of the lobes without pulling the intake. Back in the day, we used them when swapping cams in a few hours with the engine in the car. Had to pull the radiator etc, but not the intake. It saves some time.
I have 2 different styles of the tool. One is a light simple tool, the other is heavy duty for pulling stubborn lifters on old engines with varnish build-up.
The adjustors were not bottom out. When I zeroed the lifter plunger, I turned in about another 1/4" turn. That is what I meant by zero.
I am running the Mopar Performance "452" aluminum head, will this tool/lifter removal procedure work with this head?
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Re: Comp Lifter Noise/Clacking at 2k RPM Symptoms/Questions
[Re: kz5rt2]
#759432
07/27/10 02:59 PM
07/27/10 02:59 PM
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Joined: Jan 2003
Posts: 21,085
Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,085
Niles , Ohio
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Its not that hard to pull the intake.How much did you have to adjust the rod after the miles?That and most hyd cams should have 1/2 turn after it hits the plunger.Id pull the intake if it was mine.Rocky
Chrysler Firepower
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Re: Comp Lifter Noise/Clacking at 2k RPM Symptoms/Questions
[Re: kz5rt2]
#759434
07/27/10 04:51 PM
07/27/10 04:51 PM
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Joined: Jan 2003
Posts: 75,095
A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,095
A Banana Republic near you.
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Quote:
I am running the Mopar Performance "452" aluminum head, will this tool/lifter removal procedure work with this head?
No , those are ebrocks and the pics I have seen show small pushrod tunnels , nothing like the open area on stock iron heads , plus it's very hard to get a good look at the cam that way.
DO NOT run it till you get a look inside .
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Re: Comp Lifter Noise/Clacking at 2k RPM Symptoms/Questions
[Re: dynamite]
#759436
07/27/10 05:46 PM
07/27/10 05:46 PM
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Joined: Mar 2004
Posts: 3,287
Dalton, MA
Slipknot440
master
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master
Joined: Mar 2004
Posts: 3,287
Dalton, MA
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Quote:
I just put in a hyd roller cam built by another company,and roller lifters have been very hard to get..I found comp cams had them at nearly twice the price,but was told by my builder he wouldn't want us to use them.Just said they were bad..
i've got the comp cam (hyd roller), and had to junk the lifters, less than 400 miles on the engine and the lifters were starting screw up. My engine builder replaced them with some brand new ones from a different comapany for free
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