Post your stories/results from Detonating/Pre-Igniting on a big shot!
11-18-2007, 01:50 AM
#1
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Post your stories/results from Detonating/Pre-Igniting on a big shot! After reading Dave's post about the 28 degrees of timing and fuel pump with stock rods on a 300 shot detonating and bending the rod, I became curious..... what kind of damage have yall seen on big shots of nitrous with detonation or pre-igniting the cylinder?
I assume the list will include:
Lifted Heads
Broken Ringlands
Bent Valves
Burnt plugs
Backfires??
Lost compression
What happened to you?
I assume the list will include:
Lifted Heads
Broken Ringlands
Bent Valves
Burnt plugs
Backfires??
Lost compression
What happened to you?
11-18-2007, 02:36 AM
#2
Never detonated but got a little Lean 
Melted number 8 plug down. Rejetted number eight and made a dozen or so more passes. I thought I was lifting a head gasket because it would push coolant out durring each run. I ran 10.oh and dyno'd over 600RWHP like this
I got a feeling compression was down on number eight
Melted number 8 plug down. Rejetted number eight and made a dozen or so more passes. I thought I was lifting a head gasket because it would push coolant out durring each run. I ran 10.oh and dyno'd over 600RWHP like this
I got a feeling compression was down on number eight
11-18-2007, 08:02 AM
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Never detonated but got a little Lean
Melted number 8 plug down. Rejetted number eight and made a dozen or so more passes. I thought I was lifting a head gasket because it would push coolant out durring each run. I ran 10.oh and dyno'd over 600RWHP like this
I got a feeling compression was down on number eight
Melted number 8 plug down. Rejetted number eight and made a dozen or so more passes. I thought I was lifting a head gasket because it would push coolant out durring each run. I ran 10.oh and dyno'd over 600RWHP like this
I got a feeling compression was down on number eight
that is a good start... thanks for the contribution!
11-18-2007, 08:57 AM
#4
Never detonated but got a little Lean
Melted number 8 plug down. Rejetted number eight and made a dozen or so more passes. I thought I was lifting a head gasket because it would push coolant out durring each run. I ran 10.oh and dyno'd over 600RWHP like this
I got a feeling compression was down on number eight
Melted number 8 plug down. Rejetted number eight and made a dozen or so more passes. I thought I was lifting a head gasket because it would push coolant out durring each run. I ran 10.oh and dyno'd over 600RWHP like this
I got a feeling compression was down on number eight
Robert
11-18-2007, 09:44 AM
#6
The pistons looked great once we cleaned them up. HOPEFULLY this will clean up the high end miss I was getting. I have yet to put it through the last 200ft on juice with out breaking up. At one point we were down to 10* and below 10 ARF
i was SO glad I took the NGKs out and went to the Autolite racing plugs!
11-19-2007, 01:43 AM
#7
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Nope it is just the flash on the pic's. My $100 E-bay shop camera LOL.
The pistons looked great once we cleaned them up. HOPEFULLY this will clean up the high end miss I was getting. I have yet to put it through the last 200ft on juice with out breaking up. At one point we were down to 10* and below 10 ARF
i was SO glad I took the NGKs out and went to the Autolite racing plugs!
The pistons looked great once we cleaned them up. HOPEFULLY this will clean up the high end miss I was getting. I have yet to put it through the last 200ft on juice with out breaking up. At one point we were down to 10* and below 10 ARF
i was SO glad I took the NGKs out and went to the Autolite racing plugs!
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11-19-2007, 09:14 AM
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Never had any experience with detonating/pre-ignition but I had a backfire once that blue a flame out of the corner of my hood, fried my MAF, and blew apart my CAI.
11-19-2007, 12:14 PM
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melted a few dozen plugs getting greedy on nitrous and not reflashing my nitrous tunes. i have a ground strap off number 3 permanently embedded in my piston to remind me not to be an idiot 
11-21-2007, 11:40 AM
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