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5.7 Hemi blowed up, got questions???
#947092
03/09/11 01:44 PM
03/09/11 01:44 PM
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Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
OP
I Live Here
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OP
I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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So what would cause one to stick two rods out the side of the block? I can see through the hole in the block that the two big ends still spin perfectly on the crank but they both apear to have just simply broke for no reason  Customer whants to know why his durango would do this to him at just 109,000 miles  I told him the rods just plain broke for no reason.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: 5.7 Hemi blowed up, got questions???
[Re: HotRodDave]
#947093
03/09/11 01:51 PM
03/09/11 01:51 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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We had a V12 toss a rod through the block for no obvious reason. It was a first for our high volume shop.
When the engine was torn down the burn ring at the top of that cylinder was taller than the other cylinders. It seems the engine drank some water and survived for a while. I guess the owner finally got on it one too many times and it blew the rod out the side of the block.
Perhaps something similar happened with that one.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: 5.7 Hemi blowed up, got questions???
[Re: feets]
#947094
03/09/11 02:10 PM
03/09/11 02:10 PM
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Joined: Jan 2007
Posts: 1,668
Mi,U.S.A.
mike s
top fuel
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top fuel
Joined: Jan 2007
Posts: 1,668
Mi,U.S.A.
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The powdered metal con rods are very strong until there is a problem.Sounds like Piston/pin problem,possibly coolant in the cyl.Piston may be broken at the pin.Common when they scuff but rare.Top ring land broken? Any pics? Year?
Leave the gun.......take the Cannoli's....Mike
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Re: 5.7 Hemi blowed up, got questions???
[Re: HotRodDave]
#947096
03/09/11 02:22 PM
03/09/11 02:22 PM
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Joined: Apr 2007
Posts: 2,826
NY usa
540challenger
master
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master
Joined: Apr 2007
Posts: 2,826
NY usa
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Quote:
So what would cause one to stick two rods out the side of the block? I can see through the hole in the block that the two big ends still spin perfectly on the crank but they both apear to have just simply broke for no reason
Customer whants to know why his durango would do this to him at just 109,000 miles I told him the rods just plain broke for no reason.
Hydrolocked? What else did you find during the tear down????
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Re: 5.7 Hemi blowed up, got questions???
[Re: HotRodDave]
#947097
03/09/11 03:17 PM
03/09/11 03:17 PM
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Joined: Feb 2003
Posts: 2,928
A tad North of Indy
Blown71X
super gas
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super gas
Joined: Feb 2003
Posts: 2,928
A tad North of Indy
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Most likely hydrolocked it from leaky head gasket, especially if it did it when starting first thing after sitting for a good bit.
Water ingestion is also a possibility but I have personally seen 3 do this from headgaskets..All high (130k+) miles
The pic is one that did surprising little damage, unfortunally it just taged the block enough to crack it...bearings and crank were perfect.
Rick
Blown71X V2.0 under construction
71 Cuda 383 4-SPD (maybe for sale)
2010 Challenger B5 Classic
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