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Re: ever hear a sound like this?
[Re: 70Cuda383]
#1186630
03/02/12 10:58 AM
03/02/12 10:58 AM
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Joined: Jan 2003
Posts: 642
New Jersey
Craig
mopar
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mopar
Joined: Jan 2003
Posts: 642
New Jersey
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Quote:
by the way, on a leak down, does a piston really have to be at TDC, or can you just keep the valves closed by removing the rocker arms?
if the piston isn't right at TDC, the air pressure will push it down. Interesting read, and good troubleshooting, hope you are right about the lifter.
67 Dart, 426 Hemi, 9.23/145mph, 3400lbs, footbraked, owned since 1982
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Re: ever hear a sound like this?
[Re: Moparnut426]
#1186632
03/02/12 02:47 PM
03/02/12 02:47 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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Marysville, O-H-I-O
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I think it's safe to say at this point, that it's not a broken ring. found most of it in the lifter valley laying in puddles of oil, but I'm gonna have to drop the pan anyway and have a looksee. damn that's not going to be any fun, dropping the pan in the vehicle!  good news is that the cam survived fine. there is no wear into the cam at all. the lobe is still perfectly smooth to the touch, with just a visible wear pattern like all the other lobes. what's left of the roller was still rolling, which is probably what saved the cam. had that roller locked up and stopped turning, I may be looking at a full tear down, wash, re-assembly and cam swap.
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Re: ever hear a sound like this?
[Re: Challenger 1]
#1186639
03/02/12 05:17 PM
03/02/12 05:17 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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Quote:
Wow, from the looks of that picture...I don't see how the cam survived? And if it were me I take the whole thing out and apart and start over. You will never know if you got all the pieces out otherwise.
Proper lash/pre load is important. 
the roller was still able to spin sitting like that. but it was rubbing and thus, the squeaking. the fact that the roller stayed rolling is what probably saved the cam. I already looked the cam lobe over very closely, wiped the oil away and felt with my finger. it is smooth to the touch, no signs of wear at all, other than the same visible wear pattern as what's on the rest of the lobes. if the cam had worn at all, it would have worn only as wide of a mark as that roller is wide, before getting into the rest of the lifter to start wearing the rest of the lobe. ...if that makes sense. the lobe is like, 1 1/4 inched wide, and the roller is only about 3/4 of an inch wide, and it rides right in the middle of the cam lobe. if the lobe had worn at all, it would have a big groove in it as wide as the roller.
no metal filings anywhere, just simple part failure and "big" metal pieces. I can see where the lifter body cracked and broke, allowing the lifter to come apart. oil is clean, not sparkley. so if there are any more pieces, they're at the bottom of the oil pan.
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Re: ever hear a sound like this?
[Re: 70Cuda383]
#1186640
03/02/12 05:49 PM
03/02/12 05:49 PM
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Joined: Jan 2003
Posts: 19,357
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,357
Las Vegas
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The question is why did it happen in the first place?
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: ever hear a sound like this?
[Re: Al_Alguire]
#1186641
03/02/12 05:54 PM
03/02/12 05:54 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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Quote:
The question is why did it happen in the first place?
one of 2 reasons I can figure.
A) I remember when I cleaned up the lifters (they were used before) one of them felt funny, sticky after I cleaned them and took them apart. however, after I re-oiled the roller, it felt normal, so I figured it was just a bit sticky from being dry.
maybe there was a bad needle bearing in the roller and it let go once it was subjected to the pressures of an open valve spring, and once that needle bearing failed, it took out the rest of the roller assembly.
or
B) when I re-did the cam timing (headers were glowing red initially, so I checked it and I was at an installed centerline of 116 on a 114 LSA, but turns out the cam SHOULD have been installed at 110 center line per the original cam maker) I might have knocked the side of the roller lifter from the cam lobe next to it, while the cam was sliding in and out of the block as I pulled and re-installed the cam gear several times, removed the stock cam key and installed a 2 degree offset key, etc.
Take your pick, but my money is one one of those 2 reasons right there, although I don't know for sure.
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Re: ever hear a sound like this?
[Re: 70Cuda383]
#1186646
03/03/12 10:40 AM
03/03/12 10:40 AM
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Joined: Jun 2005
Posts: 2,776
Ontario Canada
MattW
master
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master
Joined: Jun 2005
Posts: 2,776
Ontario Canada
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Quote:
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Good find but after viewing the first video you need new wires. # 7 was arcing Bad against the valve cover Matt
Um...they're brand new Firecore 50s, haven't even driven them yet. and where did you see arcing on the #7 plug wire I don't even see the #7 plug wire in the first video....
MY BAD # 8 around 1.22 into the vid. It LOOKS like it is arcing. Maybe I'm wrong. 
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Re: ever hear a sound like this?
[Re: MattW]
#1186647
03/03/12 10:59 AM
03/03/12 10:59 AM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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Quote:
Quote:
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Good find but after viewing the first video you need new wires. # 7 was arcing Bad against the valve cover Matt
Um...they're brand new Firecore 50s, haven't even driven them yet. and where did you see arcing on the #7 plug wire I don't even see the #7 plug wire in the first video....
MY BAD # 8 around 1.22 into the vid. It LOOKS like it is arcing. Maybe I'm wrong.
Ok, now I see it. I don't know....I'll have to ohm check the wire I guess, might have a bad one. if it is bad, I have no doubt that Rick will take care of it for me. like I said, this is a brand new set, zero miles, the only run time is the initial fire up on the engine and trouble shooting this sound.
I don't know that it's spark arching though, because that was a very rapid flashing, WAY faster than the engine RPM. not saying it's not the plug wire arching, but I don't see how it can be arching that "fast" when the engine is at idle
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Re: ever hear a sound like this?
[Re: 70Cuda383]
#1186648
03/03/12 11:05 AM
03/03/12 11:05 AM
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Joined: Jun 2005
Posts: 2,776
Ontario Canada
MattW
master
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master
Joined: Jun 2005
Posts: 2,776
Ontario Canada
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Quote:
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Good find but after viewing the first video you need new wires. # 7 was arcing Bad against the valve cover Matt
Um...they're brand new Firecore 50s, haven't even driven them yet. and where did you see arcing on the #7 plug wire I don't even see the #7 plug wire in the first video....
MY BAD # 8 around 1.22 into the vid. It LOOKS like it is arcing. Maybe I'm wrong.
Ok, now I see it. I don't know....I'll have to ohm check the wire I guess, might have a bad one. if it is bad, I have no doubt that Rick will take care of it for me. like I said, this is a brand new set, zero miles, the only run time is the initial fire up on the engine and trouble shooting this sound.
I don't know that it's spark arching though, because that was a very rapid flashing, WAY faster than the engine RPM. not saying it's not the plug wire arching, but I don't see how it can be arching that "fast" when the engine is at idle
I'm sure you will find out. Man that was a good catch on the lifter. I don't know If I would of found it before a major meltdown. GO BUY A LOTTO TICKET. 
What year is your truck? Matt
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Re: ever hear a sound like this?
[Re: MattW]
#1186649
03/03/12 11:58 AM
03/03/12 11:58 AM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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mine is a 98. (5.9L Magnum whiplash cam, NV3500 stick shift, 3.92 gears, etc) this one is a 99 I built this engine for a kid on the Dakota Forums, who lives up in Michigan. the whole thing started when he bought the cam off of me, and tried to have a local shop install it for him, they screwed everything up and he asked if I was willing to help him out, which snowballed into "hey, can you just pull the whole thing and rebuild it with edelbrock heads, more compression, etc" stock stroke 360, Edelbrock magnum RPM heads, 10.7:1 compression, mid-length headers, dual 2.5" exhaust, 220/230 @ .050", 114LSA, installed at 110, it ought to be about a 450 crank hp engine, but going into a truck that's over 4000 lbs.
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