Blown Engine from the weekend
04-16-2007, 06:31 PM
#31
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[QUOTE=honda9krpm,Apr 16 2007, 05:53 PM] Sorry for the saga CC!
Could you get some pics of the damage so we can diagnose and prevent future failure for us trackies?
I was suspecting the common retainer failure when the boys told me ur saga.
Could you get some pics of the damage so we can diagnose and prevent future failure for us trackies?
I was suspecting the common retainer failure when the boys told me ur saga.
04-16-2007, 07:05 PM
#32
Originally Posted by robert112,Apr 17 2007, 12:31 PM
even a spun bearing wouldn't cause a piston rod to shoot through a sidewall block.
I duno ..
I duno ..
Chronology of the failure goes like this.
1. Rod bearing fails due to oil starvation, cracked crank, debris etc. ( driver should notice a small knocking)
2. Bearing material melts away allowing the rod to move a lot on the crank. (knocking gets louder and oil pressure drops below normal)
3. with extra clearance the rod and piston can now hit the head so the pistons starts smashing itself to bits on the underside of the head ( driver should now hear really loud knocking, people at the side of the track can also hear the noise)
4. Piston disintegrates allowing rod to get out of control. Rod does lots of loop the loop inside the block till something jams and whats inside comes out. ( People at the trackside notice big bang and lots of smoke. Some people even notice the smoke forms little smoke dollar signs, like smoke rings only different. driver continues back to the pits claiming that he shut it down as soon as he heard a noise).
Chris.
04-16-2007, 07:07 PM
#33
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Blown engine, on the track, at about 7k....lol sounds familiar. Well i can honestly say i know how u feel. I say go the 2.2 with a turbo. Best of luck with the rebuild CC.
04-16-2007, 07:43 PM
#34
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Originally Posted by chris_barry,Apr 17 2007, 01:05 PM
I've seen lots of holes in blocks from spun bearings.
Chronology of the failure goes like this.
1. Rod bearing fails due to oil starvation, cracked crank, debris etc. ( driver should notice a small knocking)
2. Bearing material melts away allowing the rod to move a lot on the crank. (knocking gets louder and oil pressure drops below normal)
3. with extra clearance the rod and piston can now hit the head so the pistons starts smashing itself to bits on the underside of the head ( driver should now hear really loud knocking, people at the side of the track can also hear the noise)
4. Piston disintegrates allowing rod to get out of control. Rod does lots of loop the loop inside the block till something jams and whats inside comes out. ( People at the trackside notice big bang and lots of smoke. Some people even notice the smoke forms little smoke dollar signs, like smoke rings only different. driver continues back to the pits claiming that he shut it down as soon as he heard a noise).
Chris.
Chronology of the failure goes like this.
1. Rod bearing fails due to oil starvation, cracked crank, debris etc. ( driver should notice a small knocking)
2. Bearing material melts away allowing the rod to move a lot on the crank. (knocking gets louder and oil pressure drops below normal)
3. with extra clearance the rod and piston can now hit the head so the pistons starts smashing itself to bits on the underside of the head ( driver should now hear really loud knocking, people at the side of the track can also hear the noise)
4. Piston disintegrates allowing rod to get out of control. Rod does lots of loop the loop inside the block till something jams and whats inside comes out. ( People at the trackside notice big bang and lots of smoke. Some people even notice the smoke forms little smoke dollar signs, like smoke rings only different. driver continues back to the pits claiming that he shut it down as soon as he heard a noise).
Chris.
04-16-2007, 07:51 PM
#35
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Thanks Chris. I was thinking of the same line. The true evidence for this will be blue or burn mark on the crank with open inspection.
There were reports on s2ki a long time ago of a few cases of broken rods for no apparent cause. This will certainly knock a hole in the short block. I think Honda America replaced the engines under warranty. Another causes of this saga is detonation but I've only seen it in serious FI engines.
What cause ur engine failure whiteap1? Do you recall ur oil level prior to the failure?
There were reports on s2ki a long time ago of a few cases of broken rods for no apparent cause. This will certainly knock a hole in the short block. I think Honda America replaced the engines under warranty. Another causes of this saga is detonation but I've only seen it in serious FI engines.
What cause ur engine failure whiteap1? Do you recall ur oil level prior to the failure?
04-16-2007, 09:05 PM
#36
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Originally Posted by chris_barry,Apr 16 2007, 07:05 PM
I've seen lots of holes in blocks from spun bearings.
Chronology of the failure goes like this.
1. Rod bearing fails due to oil starvation, cracked crank, debris etc. ( driver should notice a small knocking)
2. Bearing material melts away allowing the rod to move a lot on the crank. (knocking gets louder and oil pressure drops below normal)
3. with extra clearance the rod and piston can now hit the head so the pistons starts smashing itself to bits on the underside of the head ( driver should now hear really loud knocking, people at the side of the track can also hear the noise)
4. Piston disintegrates allowing rod to get out of control. Rod does lots of loop the loop inside the block till something jams and whats inside comes out. ( People at the trackside notice big bang and lots of smoke. Some people even notice the smoke forms little smoke dollar signs, like smoke rings only different. driver continues back to the pits claiming that he shut it down as soon as he heard a noise).
Chris.
Chronology of the failure goes like this.
1. Rod bearing fails due to oil starvation, cracked crank, debris etc. ( driver should notice a small knocking)
2. Bearing material melts away allowing the rod to move a lot on the crank. (knocking gets louder and oil pressure drops below normal)
3. with extra clearance the rod and piston can now hit the head so the pistons starts smashing itself to bits on the underside of the head ( driver should now hear really loud knocking, people at the side of the track can also hear the noise)
4. Piston disintegrates allowing rod to get out of control. Rod does lots of loop the loop inside the block till something jams and whats inside comes out. ( People at the trackside notice big bang and lots of smoke. Some people even notice the smoke forms little smoke dollar signs, like smoke rings only different. driver continues back to the pits claiming that he shut it down as soon as he heard a noise).
Chris.
classic.
give the drivers some credit, not easy to hear a 'knocking' at 9000rpm especially if you have an exhaust
04-16-2007, 09:40 PM
#37
Originally Posted by chris_barry,Apr 17 2007, 01:05 PM
People at the trackside notice big bang and lots of smoke. Some people even notice the smoke forms little smoke dollar signs, like smoke rings only different. driver continues back to the pits claiming that he shut it down as soon as he heard a noise).
04-16-2007, 11:07 PM
#38
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Originally Posted by chris_barry,Apr 17 2007, 01:05 PM
I've seen lots of holes in blocks from spun bearings.
Chronology of the failure goes like this.
1. Rod bearing fails due to oil starvation, cracked crank, debris etc. ( driver should notice a small knocking)
2. Bearing material melts away allowing the rod to move a lot on the crank. (knocking gets louder and oil pressure drops below normal)
3. with extra clearance the rod and piston can now hit the head so the pistons starts smashing itself to bits on the underside of the head ( driver should now hear really loud knocking, people at the side of the track can also hear the noise)
4. Piston disintegrates allowing rod to get out of control. Rod does lots of loop the loop inside the block till something jams and whats inside comes out. ( People at the trackside notice big bang and lots of smoke. Some people even notice the smoke forms little smoke dollar signs, like smoke rings only different. driver continues back to the pits claiming that he shut it down as soon as he heard a noise).
Chris.
Chronology of the failure goes like this.
1. Rod bearing fails due to oil starvation, cracked crank, debris etc. ( driver should notice a small knocking)
2. Bearing material melts away allowing the rod to move a lot on the crank. (knocking gets louder and oil pressure drops below normal)
3. with extra clearance the rod and piston can now hit the head so the pistons starts smashing itself to bits on the underside of the head ( driver should now hear really loud knocking, people at the side of the track can also hear the noise)
4. Piston disintegrates allowing rod to get out of control. Rod does lots of loop the loop inside the block till something jams and whats inside comes out. ( People at the trackside notice big bang and lots of smoke. Some people even notice the smoke forms little smoke dollar signs, like smoke rings only different. driver continues back to the pits claiming that he shut it down as soon as he heard a noise).
Chris.
I've been told to always overfill my oil before going on the track. To just below the top bump on the dipstick (on the skyline). I was told it helps prevent starvation during high G cornering.
Seems to work.
I'd much rather have baffles in my sump though.
04-16-2007, 11:35 PM
#39
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Originally Posted by honda9krpm,Apr 16 2007, 07:51 PM
What cause ur engine failure whiteap1? Do you recall ur oil level prior to the failure?