Blocks :)
11-12-2011, 08:43 PM
#1
11-12-2011, 09:02 PM
#3
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03 E55 AMG, 06 Harley Road King Custom 06 Ram 2500 Cummins, 97 Firebird Race Car, 88 Cutlass Supreme
I would have expected more head bolts on a factory original boosted motor. What size bolts are used on these? I know the GM LS motors have issues at big boost levels due to only 4 bolts per cylinder. Don't think anyone has tried for 1000+ HP on one of these though. Lol
11-12-2011, 10:50 PM
#6
Super Moderator
Read about this on another forum....thanks for posting the pictures here. :)
Sucks he broke an aftermarket piston. Won’t be too long before you’re getting after it again at the Texas Mile.
Sucks he broke an aftermarket piston. Won’t be too long before you’re getting after it again at the Texas Mile.
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11-13-2011, 06:56 AM
#9
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03 E55 AMG, 06 Harley Road King Custom 06 Ram 2500 Cummins, 97 Firebird Race Car, 88 Cutlass Supreme
What do you think caused that? Lose fuel pressure, or detonation or what?
11-13-2011, 08:18 AM
#11
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2005 E55 AMG
That's not detonation all, at least not entirely. The ring land is intact ( melted, but not broken from what I can see ). That looks like a heat related failure due to friction. I read about a piston that blew into a million pieces correct? A few small pieces of piston can travel from one cylinder to the next ( through the surge tanks ) and grind other pistons down to total failure. I've seen this before. I once disassembled and engine with a broken piston and it had piston pieces even in the intake. 
Detonation over long periods of time can cause damage like this as well, but you can usually tell if your engine has pinging for extended periods of time.
Detonation over long periods of time can cause damage like this as well, but you can usually tell if your engine has pinging for extended periods of time.
Last edited by GT-ER; 11-13-2011 at 09:04 AM.
11-13-2011, 10:17 AM
#14
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2003 W211 E55, 2003 W220 S600
That's not detonation all, at least not entirely. The ring land is intact ( melted, but not broken from what I can see ). That looks like a heat related failure due to friction. I read about a piston that blew into a million pieces correct? A few small pieces of piston can travel from one cylinder to the next ( through the surge tanks ) and grind other pistons down to total failure. I've seen this before. I once disassembled and engine with a broken piston and it had piston pieces even in the intake.
Detonation over long periods of time can cause damage like this as well, but you can usually tell if your engine has pinging for extended periods of time.
Detonation over long periods of time can cause damage like this as well, but you can usually tell if your engine has pinging for extended periods of time.
11-13-2011, 10:52 AM
#16
Super Member
Thanks, got confused when splinter mentioned something about breaking an aftermarket piston. Thought the one in the picture was a failed Weis
Last edited by Tech-Tune; 11-13-2011 at 10:55 AM.
11-13-2011, 11:09 AM
#17
Super Member
LS1, bored and stroked to 422, Procharger at 12psi. Heavily built automatic.Ended up selling the C5 before the build was complete. Kept shredding supercharger belts. We had it solid at about 710rwhp. Assuming about 18% loss, we were north of 850 at the crank.
Had 13 inch wide CCW classics. Couldn't hook up AT ALL.
Would break the tires loose. Easily. at 60mph.
Miss that car.
11-13-2011, 11:37 AM
#18
PLATINUM SPONSOR
Just to clarify, that blown piston is not from either of my motors. It was from another motor, that blew number 8 and I was there just after it blew. That piston went at the same time. cold 26 deg day, dude gets on it (strong motor) and kaboom! Ratlting , blowing oil out and I yelled at him to turn rngine off, before parts went flying through every orifice in the engine.. The cylinder wall has a lazer melt into the side of it, that matches the melted hole in the piston. Detonation works in very mysterious ways. couple valves on other holes had marks on them ..
Nasty!!
The cylinder wall has a lazer melt into the side of it, that matches the melted hole in the piston. Detonation works in very mysterious ways. couple valves on other holes had marks on them ..Nasty!!
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
11-13-2011, 12:15 PM
#19
MBWorld Fanatic!
Nasty indeed! Exotic, Shardul, what causes this failure? Is there any preventative maintenance for this? Was this off a heavily modified motor or your usual pulley/headers/tune?
11-13-2011, 02:49 PM
#20
Super Member
Control heat, to include IAT, engine temp,and spark plug heat
Control Octane, to include reducing oil in the combustion possess
Control Timing
This the basic key factors in making your engine survive
11-13-2011, 07:15 PM
#24
That's not detonation all, at least not entirely. The ring land is intact ( melted, but not broken from what I can see ). That looks like a heat related failure due to friction. I read about a piston that blew into a million pieces correct? A few small pieces of piston can travel from one cylinder to the next ( through the surge tanks ) and grind other pistons down to total failure. I've seen this before. I once disassembled and engine with a broken piston and it had piston pieces even in the intake.
Detonation over long periods of time can cause damage like this as well, but you can usually tell if your engine has pinging for extended periods of time.
Detonation over long periods of time can cause damage like this as well, but you can usually tell if your engine has pinging for extended periods of time.
11-13-2011, 08:35 PM
#25
PLATINUM SPONSOR
Yes, lean and detonated. I lean lean and detonation are broad terms. One piston is not the whole story. You should see the blown out part of the cylinder wall and it lowert than the compression level.
Car had basic mods. Cooling, tune, pulley , 82TB and kleeman headers. About what 50% of the moders have on this forum.
Car had basic mods. Cooling, tune, pulley , 82TB and kleeman headers. About what 50% of the moders have on this forum.
__________________
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
