Name that failure!
05-29-2013, 09:29 PM
#41
I have had mud plug up the water hose going to just one header tube thus that header tube runs much hotter than all of the others. Hotter means better scavenging. Lean condition on just that cylinder.
That piston melted due to a lean condition. I never said that the bearings were damaged. I said IF it was detonation that destroyed that piston I felt the bearings would have been hammered.
The top ring came off WHEN the top of the piston melted off. I have melted pistons many times and they were NOT caused by detonation. That piston melted and coated the cylinder with it. That one cylinder ran lean for a lot longer than 10 seconds. If the head lifted off of the block it would have melted the head gasket also. I run EGT gauges on my engines for a reason.
That piston melted due to a lean condition. I never said that the bearings were damaged. I said IF it was detonation that destroyed that piston I felt the bearings would have been hammered.
The top ring came off WHEN the top of the piston melted off. I have melted pistons many times and they were NOT caused by detonation. That piston melted and coated the cylinder with it. That one cylinder ran lean for a lot longer than 10 seconds. If the head lifted off of the block it would have melted the head gasket also. I run EGT gauges on my engines for a reason.
05-29-2013, 10:11 PM
#42
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As far as your injector "size" being too small, it is common for fuel press to be bumped up on these procharged applications, a 42lb injector becomes a 53lb injector when press is raised from 43.5 to 70 psi which will very easily support 600 hp at .55 bsfc, ideal, no but has been used on LOTS of stuff.I don't believe your injectors suddenly became "too small" with no other changes in past 3 years. IF you were reusing tjose injectprs (which your not) I would STILL throw away the one that was on the cyl that melted down even IF it tested good juct in case it is a intermittent problem. Are your new 1000 cc (96lb) injectors also high impedance, I just started seeing some high impedance injectors that big in past year or so but still hard to find, Smitty
05-29-2013, 10:17 PM
#44
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"Injectors have been tested and flowed at FIC and were SPOT on.
Leaning towards possible injector driver."
I am going to assume that because you are running 42 lb injectors that you are also running a factory merc /delphi mefi3 ecu. If so your probably NOT going to find a problem with the injector driver because- Mefi's are BATCH fire, your ECU is firing a batch of FOUR injectors everytime it fires, if there was a problem with one of the 2 injector drivers, you would have problemss with four injectors, Smitty
Leaning towards possible injector driver."
I am going to assume that because you are running 42 lb injectors that you are also running a factory merc /delphi mefi3 ecu. If so your probably NOT going to find a problem with the injector driver because- Mefi's are BATCH fire, your ECU is firing a batch of FOUR injectors everytime it fires, if there was a problem with one of the 2 injector drivers, you would have problemss with four injectors, Smitty
05-29-2013, 10:32 PM
#46
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I have had mud plug up the water hose going to just one header tube thus that header tube runs much hotter than all of the others. Hotter means better scavenging. Lean condition on just that cylinder.
That piston melted due to a lean condition. I never said that the bearings were damaged. I said IF it was detonation that destroyed that piston I felt the bearings would have been hammered.
The top ring came off WHEN the top of the piston melted off. I have melted pistons many times and they were NOT caused by detonation. That piston melted and coated the cylinder with it. That one cylinder ran lean for a lot longer than 10 seconds. If the head lifted off of the block it would have melted the head gasket also. I run EGT gauges on my engines for a reason.
That piston melted due to a lean condition. I never said that the bearings were damaged. I said IF it was detonation that destroyed that piston I felt the bearings would have been hammered.
The top ring came off WHEN the top of the piston melted off. I have melted pistons many times and they were NOT caused by detonation. That piston melted and coated the cylinder with it. That one cylinder ran lean for a lot longer than 10 seconds. If the head lifted off of the block it would have melted the head gasket also. I run EGT gauges on my engines for a reason.
05-30-2013, 09:29 PM
#47
Always an A S S. Keep it up MIKE. - You don't know a thing about me but YOU know everything. If you are so smart - You tell me why car headers are so much better than boat headers when everything is the same. DUH
How many engines have you built? How many pistons have you seen melted?
How many engines have you built? How many pistons have you seen melted?
05-30-2013, 09:44 PM
#48
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Always an A S S. Keep it up MIKE. - You don't know a thing about me but YOU know everything. If you are so smart - You tell me why car headers are so much better than boat headers when everything is the same. DUH
How many engines have you built? How many pistons have you seen melted?
How many engines have you built? How many pistons have you seen melted?
05-30-2013, 10:15 PM
#50
HEY STUPID - You must have me confused with someone that cares about your spelling. I don't care. - It just proves how stupid you are.
You didn't answer my question... MR LOUD MOUTH KNOW IT ALL
You didn't answer my question... MR LOUD MOUTH KNOW IT ALL
