5.7 issues
#2453437
02/18/18 01:10 PM
02/18/18 01:10 PM
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Joined: Jul 2008
Posts: 361 Canada
onig
OP
enthusiast
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OP
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Canada
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So my plan was to do a stock bottom end on turbo. I picked up an 04 5.7 from a Durango, no MDS or VVT. I did hear the engine run before it being pulled. It did have a rattle to it but, idled and ran fine. Sat in storage for a couple of years. Started to pull it apart and found that the passenger side exhaust manifold was cracked and the two bolts for the rear of that manifold were broken. Upon seeing this I thought that was the cause of the rattle. Yesterday I removed the timing cover, pan and windage tray. Then I notice a bent rod. Crank counterweight just slightly hitting bottom of piston, that was probably the rattling noise that I heard. Continuing, I move the lifters out of the way and pulled out the cam. A couple of the lobes are pitted, but their matching lifters look good. No water in the oil, or gasoline smelling. Are these just inferior parts or is their another reason for these issues? What are your opinions?
69 Dart
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Re: 5.7 issues
[Re: onig]
#2453480
02/18/18 02:41 PM
02/18/18 02:41 PM
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Joined: Jul 2008
Posts: 361 Canada
onig
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OP
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No floods in my area. Apparently it started while the vehicle was being driven. The oil was dirty used oil that we typically see when doing an oil change. The Durango was taken to a tech to see cost on repair. They decided not to repair.
69 Dart
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Re: 5.7 issues
[Re: onig]
#2453508
02/18/18 04:09 PM
02/18/18 04:09 PM
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Joined: Nov 2003
Posts: 1,881 Pittsburgh,PA
RTSrunner
top fuel
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top fuel
Joined: Nov 2003
Posts: 1,881
Pittsburgh,PA
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The Durango is noted for having a cowl that lets water run onto the intake.On cold startup the engine will have water pooled on the intake/head area.Either leaking intake gaskets or the MLS head gaskets are relaxed (higher mileage engines) and sucks the water in on startup.Your is at least rebuildable! The Durango I bought had hydraliced a cylinder and broke a rod and the block.The big end of the rod still spun normally on the crank and the crank itself was ok.Powdered metal rods normally snap vs bend like yours.What cylinder was the bent rod on ##7 or 8 perhaps? RT
Last edited by RTSrunner; 02/18/18 04:10 PM.
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Re: 5.7 issues
[Re: onig]
#2453550
02/18/18 05:47 PM
02/18/18 05:47 PM
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Joined: Dec 2005
Posts: 9,719 Home
SRT6776
I hate internal combustion engines!
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I hate internal combustion engines!
Joined: Dec 2005
Posts: 9,719
Home
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No floods in my area. Apparently it started while the vehicle was being driven. The oil was dirty used oil that we typically see when doing an oil change. The Durango was taken to a tech to see cost on repair. They decided not to repair. A big puddle can do that
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Re: 5.7 issues
[Re: onig]
#2453645
02/18/18 10:02 PM
02/18/18 10:02 PM
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Joined: Dec 2010
Posts: 1,035 Missouri U.S.A.
71yelladustr
super stock
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super stock
Joined: Dec 2010
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Missouri U.S.A.
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I’m amazed the rod bent instead of breaking and taking out the block. Looks like a good excuse to put some better parts in it.
392 gen III hemi on E-85 727 trans Dana 60 10.02@134
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Re: 5.7 issues
[Re: 71yelladustr]
#2453692
02/18/18 11:35 PM
02/18/18 11:35 PM
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Joined: Nov 2003
Posts: 1,881 Pittsburgh,PA
RTSrunner
top fuel
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top fuel
Joined: Nov 2003
Posts: 1,881
Pittsburgh,PA
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I’m amazed the rod bent instead of breaking and taking out the block. Looks like a good excuse to put some better parts in it. Exactly,powdered metal is brittle and generally snaps.
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Re: 5.7 issues
[Re: 71yelladustr]
#2453744
02/19/18 01:30 AM
02/19/18 01:30 AM
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Joined: Jul 2008
Posts: 361 Canada
onig
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OP
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Looks like a good excuse to put some better parts in it. I know, I hear you. Just wasn't ready to do it just yet.
69 Dart
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Re: 5.7 issues
[Re: onig]
#2453745
02/19/18 01:31 AM
02/19/18 01:31 AM
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Joined: Jul 2008
Posts: 361 Canada
onig
OP
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OP
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Posts: 361
Canada
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What about the pitting on the cam lobes?
69 Dart
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Re: 5.7 issues
[Re: onig]
#2454110
02/19/18 08:30 PM
02/19/18 08:30 PM
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Joined: Jul 2008
Posts: 361 Canada
onig
OP
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OP
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Hey Matt, part #s on those parts?
69 Dart
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Re: 5.7 issues
[Re: onig]
#2456604
02/24/18 12:18 PM
02/24/18 12:18 PM
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Joined: Jan 2007
Posts: 24 Massachusetts
ericlre79
member
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member
Joined: Jan 2007
Posts: 24
Massachusetts
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If you just want to put it back together, I have the rods and pistons, crank, from a complete truck engine and tranny a 03 or 04 that we tore down also have the heads, intake, tranny, convetor, harness, oil pan, etc etc etc at my shop. Bought the motor for the block of course came with everything deal....my dragpak can never have too thick wall spare blocks!
PM me if you want to go the low dough route.
If you want to hop it up, I have dragpak rods, standard bore dragpak pistons(used of course)
Eric
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