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10-06-2022, 02:29 AM
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#1 |
       
Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020
Location: Austin, TX
Posts: 2,105
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piston wear
What caused this? Essive heat, low oil pressure. high mileage, or too much fuel?
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DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer
Build Thread https://www.camaro5.com/forums/showthread.php?t=609817 |
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10-06-2022, 02:54 AM
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#2 |
Drives: 2010 2SS LS3 and 1978 STROKER 383 Join Date: Feb 2018
Location: Czech Republic
Posts: 1,592
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This is a result of the engine overheating.
I would like to see the cylinder wall after this piston 
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My life is a constant struggle with Camaro.
K&N CAI, Stainless Power longtubes, high flow cats, modified Ragazzon High Performance axle back, Soler Performance ported throttle body, Soler Performance throttle controller, RAM clutch adjuster, modified LS7 clutch kit, Tick Performance billet bearing support, Tick Performance remote bleeder, separate clutch reservoir, BMR trailing arms, BMR toe rods, Pedders Suspension cradle bushing inserts, Control Arm Bushings, Strut tower brace, oil catch can, Hurst T-handle shifter, 20mm wheel spacers, DBA brakes, QTP Cutouts, Dynosteve tune. |
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10-06-2022, 03:05 AM
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#3 |
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Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020
Location: Austin, TX
Posts: 2,105
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The cylinder wall just barely cleaned up with .005 of honing.
__________________
DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer
Build Thread https://www.camaro5.com/forums/showthread.php?t=609817 |
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10-06-2022, 08:33 AM
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#4 |
 
Drives: ABM #93 Join Date: Oct 2018
Location: Lotaburger
Posts: 2,693
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How many miles? Is it scuffed up or smooth? Kinda hard to tell from the picture. It’s not uncommon for them to wear thru the coating like that, especially with some mileage. As long as it’s not scarred or scuffed up I wouldn’t worry too much.
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ABM #2399 2SS/RS:SOLD
ABM #93 2SS/RS Black Rally stripes, Titanium Interior 4,000 miles: GM GFX side skirts and diffuser waiting on paint, GM dovetail, GM heritage, RPI ZL1 style splitter. ‘87 IROC-Z Iroc blue. all original unmolested with 50K miles. |
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10-06-2022, 08:54 AM
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#5 |
Drives: 13 CAMARO 2SS LS3-04 SILVERADO LS3 Join Date: Dec 2021
Location: SOUTHERN MARYLAND
Posts: 802
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I concur with Blue, looks like just about every one I've had apart.
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10-06-2022, 01:53 PM
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#6 |
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Drives: 2010 2SS LS3 and 1978 STROKER 383 Join Date: Feb 2018
Location: Czech Republic
Posts: 1,592
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I'm not entirely sure if that's okay.
Ok I consider this... But this is already quite a lot of damage for my taste. Looks like pistons from my overheated 78. 0.005 you're pretty lucky when I see the bitten piece of piston under the lower wiper ring.
__________________
My life is a constant struggle with Camaro.
K&N CAI, Stainless Power longtubes, high flow cats, modified Ragazzon High Performance axle back, Soler Performance ported throttle body, Soler Performance throttle controller, RAM clutch adjuster, modified LS7 clutch kit, Tick Performance billet bearing support, Tick Performance remote bleeder, separate clutch reservoir, BMR trailing arms, BMR toe rods, Pedders Suspension cradle bushing inserts, Control Arm Bushings, Strut tower brace, oil catch can, Hurst T-handle shifter, 20mm wheel spacers, DBA brakes, QTP Cutouts, Dynosteve tune. |
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10-06-2022, 03:33 PM
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#7 |
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Sporting Foole
Drives: 2010 Camaro SS Join Date: Sep 2019
Location: Alabama
Posts: 500
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Man? That section under the oil ring is ugly AF?
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10-06-2022, 04:47 PM
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#8 |
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Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020
Location: Austin, TX
Posts: 2,105
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That was with 170k miles. And it was feeling like almost like a piece of fine grit sand paper. If you look at my build thread (2012 N/A Build) you'll see he got the cylinders pretty nice with the .005 hone.
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DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer
Build Thread https://www.camaro5.com/forums/showthread.php?t=609817 |
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10-09-2022, 09:31 AM
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#9 |
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Long Live Chevy Camaro!
Drives: 2014 Camaro LT2/RS Join Date: Jun 2011
Location: Athens Georgia
Posts: 20
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That scoring is not that bad... This is one of the pistons on my "other car". Engine will have to be resleeved.
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10-09-2022, 09:46 AM
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#10 | |
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Drives: ABM #93 Join Date: Oct 2018
Location: Lotaburger
Posts: 2,693
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Quote:
__________________
ABM #2399 2SS/RS:SOLD
ABM #93 2SS/RS Black Rally stripes, Titanium Interior 4,000 miles: GM GFX side skirts and diffuser waiting on paint, GM dovetail, GM heritage, RPI ZL1 style splitter. ‘87 IROC-Z Iroc blue. all original unmolested with 50K miles. |
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10-09-2022, 06:58 PM
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#11 | |
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Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020
Location: Austin, TX
Posts: 2,105
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Quote:
__________________
DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer
Build Thread https://www.camaro5.com/forums/showthread.php?t=609817 |
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10-09-2022, 06:59 PM
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#12 | |
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Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020
Location: Austin, TX
Posts: 2,105
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Quote:
__________________
DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer
Build Thread https://www.camaro5.com/forums/showthread.php?t=609817 |
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10-11-2022, 12:38 AM
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#13 |
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Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020
Location: Austin, TX
Posts: 2,105
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Here's where the valve hit the piston on all cylinders. I don't know why the factory didn't put the valve reliefs on both sides across from each other? I'm guessing it's attempt to save money. That way they can install the piston up or down and the relief be on the same valve which I believe is on the intake side.
__________________
DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer
Build Thread https://www.camaro5.com/forums/showthread.php?t=609817 |
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10-11-2022, 08:00 AM
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#14 |
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Fast Cars and Old Guitars
Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012
Location: N. CA
Posts: 3,973
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I guess things can always be worse. Here’s a clip that could’ve been titled, “Piston Where?”
https://youtu.be/WBWJhekqPmc
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“I don’t want to belong to any club that would have me as a member.” - Groucho Marx
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