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September 27th, 2008, 07:13 PM
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Piston Damage, What caused this?
I tore apart a 1988 3800 and found this on #3.
What could of caused it?
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Heath Howard 87 TR Just your basic jazz. MAFT Pro, LC1, PL, Tpro, Extender Pro, 30 over 109 block, stock crank, rods, and cam, Sealed Power forged pistons, stock irons w/larger valves, stock intake and tb, RJC plate, 60's, GT 6152 E, PTE FMIC, Razor Alky, stock headers, 3" ATR dp, 3" single-shot, 3200 Precision multi disc lockup, Deep trans pan w/ rear pickup..... 
    
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September 27th, 2008, 09:04 PM
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Aint no telling?
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87 GN, BB6776,3000 stall,hotwire,Denso pump,Ebay FMIC,210/215 roller,stock crank,65lb injt,SMC alky,Scan2.1.JDM Headers. TT Chip.ect
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September 27th, 2008, 09:12 PM
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I've seen SC pistons chunk the edge of the piston off from detonation. Yous looks like it wore off rather than breaking off. The edges look smooth where the piston is missing. Or at least it appears that way. I wouldn't think and NA would detonate enough to chunk a piston. I guess pull it out and get a closer look.
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1987 GN PB 10.99 @ 121.00 GS Nats 1996 New build: CPT66BB/Forged Eagle crank/TRW forged pistons/Billet mains/XFI/65# Inj/9"Art Carr conv/Modded stock trans/Other crap I forgot 
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September 27th, 2008, 09:36 PM
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Looks like detonation to me!
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New forged 428" LSX/4L80 in the works for some-tim'ish in late 09  Bowtie LSX block - World Warhawk 6 bolt heads - Callies Dragonslayer crank cryo'd and nitrided - Oliver rods - Diamond Pistions - 4L80E built with a PTC 3500 10" stall - Bowtie Single Plane EFI intake - Fast XFI - Dual nozzle methanol - Precision PT101 - RJC Megacooler - Aeromotive pump with - drop sump fuel cell - and alotta time and money 1986 Grand National - Turbo LSX conversion and all the goodies to make it work.......  Visit my Myspace page, always looking for Turbo Buick friends... www.myspace.com/rysfly 30 pounds of boost is like a smokin hot chick with an STD, you really wanna hit it but are afraid of the concequence.......
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September 28th, 2008, 02:33 PM
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Looks like a lean condition followed by detonation. My first guess would be a clogged injector, but there are many other possibilities.
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87 GN: .30 TRW, GN1 heads, Comp. austempered 210 roller, steel center 2 caps/ ARP studs, T&D rockers, HR poly motor mounts, ATR headers/ d-pipe and exhaust pipes with Ultraflos, Tial 38mm wastegate, Turbosmart b/ controller, real Art Carr trans/ 3500 n/l conv, Dynotech aluminum d/shaft with loop, Hotchkis lower arms, air bags, ATR bar, Moser axles, girdled cover, SMC alky, TE-62, 65mm t/b, Precision doghouse and stock mount I/C, Holmes radiator, ACM PCV oil can, PTE oil filter re-locator, dual fans with harness, all braces, scanmaster....still not done yet 
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September 28th, 2008, 04:37 PM
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Lookin at the difference in piston color and the head gasket between the front 2 cylinders im leaning on detonation man!
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New forged 428" LSX/4L80 in the works for some-tim'ish in late 09 Bowtie LSX block - World Warhawk 6 bolt heads - Callies Dragonslayer crank cryo'd and nitrided - Oliver rods - Diamond Pistions - 4L80E built with a PTC 3500 10" stall - Bowtie Single Plane EFI intake - Fast XFI - Dual nozzle methanol - Precision PT101 - RJC Megacooler - Aeromotive pump with - drop sump fuel cell - and alotta time and money 1986 Grand National - Turbo LSX conversion and all the goodies to make it work....... Visit my Myspace page, always looking for Turbo Buick friends... www.myspace.com/rysfly 30 pounds of boost is like a smokin hot chick with an STD, you really wanna hit it but are afraid of the concequence.......
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September 29th, 2008, 07:34 AM
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While diagnosing a very rough idle I found this:
Code 43-knock sensor bad Fuel injectors were were badly clogged with rusty bits from a fuel filter that had come apart, especially number 3. I was leaning toward detonation damage myself. 
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Heath Howard 87 TR Just your basic jazz. MAFT Pro, LC1, PL, Tpro, Extender Pro, 30 over 109 block, stock crank, rods, and cam, Sealed Power forged pistons, stock irons w/larger valves, stock intake and tb, RJC plate, 60's, GT 6152 E, PTE FMIC, Razor Alky, stock headers, 3" ATR dp, 3" single-shot, 3200 Precision multi disc lockup, Deep trans pan w/ rear pickup.....
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LinkBack to this Thread: http://www.turbobuick.com/forums/turbo-lounge/264314-piston-damage-what-caused.html
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| Some Help with an '88 3800 Damaged Piston - 3800Pro.com Forum | This thread | Pingback | October 10th, 2008 10:32 AM | |
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