Engine Noise
#2653151
05/07/19 09:03 PM
05/07/19 09:03 PM
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Joined: Jun 2013
Posts: 870 Keizer, Oregon U.S.A.
elmor353
OP
super stock
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OP
super stock
Joined: Jun 2013
Posts: 870
Keizer, Oregon U.S.A.
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Recently bought and installed a late model, low mileage 440 from a motor home. After running it a few days, I started hearing a very slight rattle on start up. As soon as it gets oil, it seems to go away, however, I now think I'm hearing an ever so slight noise at idle. It bothered me enough that I dropped the pan to have a look. The bearings look great. They are standard size, the rod journals are perfect. .0025 oil clearance. I can grab the rods and when I try to move them up and down on the crank, there is no movement, however, when I try to move the rods back and forth, perpendicular to the crank, there is a lot of movement. You can hear an audible clunk. I'm thinking this is where the noise may be coming from. Time to have the big ends resized?
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Re: Engine Noise
[Re: elmor353]
#2653159
05/07/19 09:16 PM
05/07/19 09:16 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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Why do you think resizing the big ends is going to fix side clearance issues?
Get the FSM, read how to measure the rod side clearance, measure it and compare to the specifications in the FSM. FWIW, having side movement is not uncommon. Having too much can be an issue but you need to measure it.
Your ticking is probably lifters,
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: Engine Noise
[Re: elmor353]
#2653171
05/07/19 09:45 PM
05/07/19 09:45 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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I get it now. side to side sliding on crank (rod side clearance) Ok. Up & down (vertical, .0025) on crank OK . Sideways (perpendicular as you said) alot of play, Unfortunately yes it needs to come apart.
live every 24 hour block of time like it's your last day on earth
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Re: Engine Noise
[Re: elmor353]
#2653188
05/07/19 10:11 PM
05/07/19 10:11 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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Yeah I got one too (its coming out soon). EDIT I mean it is getting swapped to my 65 D100 MORE EDIT does this come out from the top or the bottom?
Last edited by RapidRobert; 05/07/19 10:19 PM. Reason: info needed
live every 24 hour block of time like it's your last day on earth
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Re: Engine Noise
[Re: RapidRobert]
#2653225
05/07/19 11:19 PM
05/07/19 11:19 PM
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Joined: Aug 2003
Posts: 954 garnett kansas
rhad
super stock
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super stock
Joined: Aug 2003
Posts: 954
garnett kansas
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the 440 i pulled out of a motorhome i brought out the front,had to use the torch to get enough clearance,to get the motor and trans both out togeather
my ladder of success is missing some rungs
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Re: Engine Noise
[Re: rhad]
#2653346
05/08/19 11:00 AM
05/08/19 11:00 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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Alright, I will grab the hot wrench & get after it.
live every 24 hour block of time like it's your last day on earth
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Re: Engine Noise
[Re: elmor353]
#2653365
05/08/19 11:47 AM
05/08/19 11:47 AM
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Joined: Aug 2003
Posts: 43,257 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,257
Bend,OR USA
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Perhaps I didn't make my self clear. I am not talking about rod side clearance, which is parallel to the crank. I'm talking about being able to move the rods back and forth across the crank journal PERPENDICULAR to the crank. There is no problem with rod side clearance. This is definitely NOT a lifter issue. This is a bottom end issue. I'm thinking the big ends are out of round. How much total side clearances do you have on the worst one? I've seen stock Mopars have in excess of .040 that didn't make noise I could hear Have you looked at all the rod bearings to see what they all look like? If not do that next If your rods, or one rod, is out of round the rod bearings will show that
Last edited by Cab_Burge; 05/08/19 11:49 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Engine Noise
[Re: elmor353]
#2653514
05/08/19 09:37 PM
05/08/19 09:37 PM
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Joined: Aug 2006
Posts: 2,529 God's Country Maryland
GODSCOUNTRY340
master
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master
Joined: Aug 2006
Posts: 2,529
God's Country Maryland
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Wait a minute, you stated above you have .0025 oil clearance on the rods and no up and down movement, now you're saying you have that movement anywhere you turn the crank. Sounding a little fishy now.
I love the smell of Deer guts in the morning, it smells like... VICTORY!
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Re: Engine Noise
[Re: elmor353]
#2653531
05/08/19 10:36 PM
05/08/19 10:36 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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Wrong answer....Goodbye
Last edited by tboomer; 05/09/19 07:17 AM.
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: Engine Noise
[Re: elmor353]
#2653630
05/09/19 10:08 AM
05/09/19 10:08 AM
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Joined: Jan 2003
Posts: 9,436 Blair County,PA
62maxwgn
master
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master
Joined: Jan 2003
Posts: 9,436
Blair County,PA
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I don't know how much clearer I can say it. I have stated more than once that the movement is back and forth. I am not talking about rod side clearance where the rods slide from front to back on the crank. I am talking about moving the rod towards one side of the block to the other, which is perpendicular to the crank, not parallel, which would be side to side movement. Maybe you should have included this ! Parallel lines have the same slope and will never intersect. Parallel lines continue, literally, forever without touching (assuming that these lines are on the same plane). On the other hand, the slope of perpendicular lines are the negative reciprocals of each other, and a pair of these lines intersects at 90 degrees.
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