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Oops...goodbye pistons
#220232
02/10/09 03:45 PM
02/10/09 03:45 PM
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Joined: Jan 2003
Posts: 17,838
S.E. Michigan
ZIPPY
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 17,838
S.E. Michigan
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Tuning errors can be costly  2007 5.7L Hemi, bone stock with a supercharger on it. Do you think it might have had too much timing?
Rich H.
Esse Quam Videri
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Re: Oops
[Re: ZIPPY]
#220233
02/10/09 03:50 PM
02/10/09 03:50 PM
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Joined: Feb 2005
Posts: 20,151
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,151
PA.
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man thats ugly. what happened?
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: Oops
[Re: ZIPPY]
#220235
02/10/09 04:17 PM
02/10/09 04:17 PM
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Joined: Feb 2005
Posts: 20,151
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,151
PA.
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I hate to see things like that happen. To bad you can't go back and run a computer program to see what went wrong and why.
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: Oops
[Re: Sport440]
#220242
02/10/09 08:40 PM
02/10/09 08:40 PM
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Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
blownzoom440
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Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
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Quote:
With Detonation there is usually tell tale signs as in Specking of the pistons and quench pads. I cant tell from the pics if there is any specking because of all the scrappnel damage. But there could be. mike
this was my thaught.and what did the plug look like?
bummer about the parts!
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Re: Oops...goodbye pistons
[Re: hemidup]
#220245
02/10/09 11:22 PM
02/10/09 11:22 PM
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Joined: Jan 2003
Posts: 2,129
Vermont
TrWaters
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,129
Vermont
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I know they make rod bearings with a larger OD for the "other" makes of engines with powdered metal rods. Not sure on Mopar. I have piles of used 5.7 parts if needed. 
TR Waters
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Re: Oops
[Re: The Shadow]
#220246
02/11/09 01:28 AM
02/11/09 01:28 AM
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Joined: Jan 2003
Posts: 1,278
Mission BC
10sec440
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,278
Mission BC
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Quote:
That's nothing unusual for the new hemi's with any power adder. The top ring is so close to the dome they break easily.
My buddy did the same thing with 3psi of boost.
 Been there, done that. He did nothing wrong. The ring land is 3mm from the top of the piston to prevent hydrocarbons from being trapped in there. GS Motorsports warns that anything over 6 psi must have replacement (forged) pistons installed.
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Re: Oops
[Re: 10sec440]
#220247
02/11/09 01:39 AM
02/11/09 01:39 AM
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Joined: Jan 2003
Posts: 6,591
Canton, Ohio
Sport440
master
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master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Quote:
Quote:
That's nothing unusual for the new hemi's with any power adder. The top ring is so close to the dome they break easily.
My buddy did the same thing with 3psi of boost.
Been there, done that. He did nothing wrong. The ring land is 3mm from the top of the piston to prevent hydrocarbons from being trapped in there. GS Motorsports warns that anything over 6 psi must have replacement (forged) pistons installed.
I wouldent doubt that this is most likly the case, just from digesting all the above info. mike 
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Re: Oops
[Re: Sport440]
#220250
02/11/09 10:41 AM
02/11/09 10:41 AM
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Joined: Jan 2003
Posts: 17,838
S.E. Michigan
ZIPPY
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 17,838
S.E. Michigan
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Quote:
Both Butting of the rings and or detonation can break the ring lands. With Detonation there is usually tell tale signs as in Specking of the pistons and quench pads. I cant tell from the pics if there is any specking because of all the scrappnel damage. But there could be. mike
Too tight of ring gap is a good point. The "good" pistons that are left in it (that didn't have any shrapnel hit them) don't show any signs of specks taken out of them. So the rings probably butted together, then?
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Re: Oops
[Re: ZIPPY]
#220251
02/11/09 10:53 AM
02/11/09 10:53 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
Quote:
Both Butting of the rings and or detonation can break the ring lands. With Detonation there is usually tell tale signs as in Specking of the pistons and quench pads. I cant tell from the pics if there is any specking because of all the scrappnel damage. But there could be. mike
Too tight of ring gap is a good point. The "good" pistons that are left in it (that didn't have any shrapnel hit them) don't show any signs of specks taken out of them. So the rings probably butted together, then?
if the bearings are hammered and fallout of the caps, it was detonating. it's very possible that detonation AND the rings butting together took place.
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