04-25-2022, 06:29 PM | #1 |
Drives: Fireball 700 Join Date: May 2017
Location: TX
Posts: 21
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Piston Failure & Melted Cats
Today I got a call from my local mechanic diagnosing my vehicle saying that 2 pistons failed and that I melted my catalytic converters.
He recommended I go with the stage 3 kit they offer, it's estimated around $18,000 - $19,000. (long tube headers, cam, bigger Procharger pulley, better blowoff valve, intake) At that point I asked how much it will be to just get me rolling again, he said he'll get back to me with that by tomorrow. After hearing that, forged pistons and a cat delete might be what I end up going with. I was really hoping to keep my budget under 10K. 18K just seems like a lot of money but I'd love to upgrade what I can while I have the engine apart. Thoughts? Here are some pictures. Last edited by Back To Pray; 04-25-2022 at 06:42 PM. |
04-25-2022, 06:33 PM | #2 |
Drives: Fireball 700 Join Date: May 2017
Location: TX
Posts: 21
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Texas Speed has this sweet kit.
https://www.texas-speed.com/p-5649-t...RoCbtIQAvD_BwE |
04-25-2022, 09:09 PM | #3 |
Drives: like an old lady Join Date: Jun 2012
Location: indiana
Posts: 2,455
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what was the setup on the car before it broke? what broke it?
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2016+ camaro: everyone’s first car
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04-25-2022, 09:33 PM | #4 | |
Drives: 2017 Camaro 2SS A8 Join Date: May 2019
Location: USA
Posts: 1,656
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Quote:
So did the mechanic tell you what caused the failures? I recall you were having fuel pump issues. I’d go with all new forged internals and make it better than before.
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Roto-Fab w/sound tube delete, Katech ported TB, Pray IM, Velossa, DD side markers, DSX FF, UPR Catch can, Halo brace, My custom vent gauge pod
Originally Posted by arpad_m - “Aww, yet another oil thread with almost the same question in the OP“ |
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04-25-2022, 10:38 PM | #5 |
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Drives: 21 ZL1 Join Date: Feb 2022
Location: South East
Posts: 662
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This is a normal LT1 failure with too much boost.
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04-26-2022, 01:49 AM | #6 | |
Drives: Fireball 700 Join Date: May 2017
Location: TX
Posts: 21
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Quote:
And yes, it's been an interesting ride, the engine and trans were warrantied. The fuel pump issue was pretty weird. The vehicle had been back and forth to my local dealer half a dozen times with no resolution. In the end, I was unplugging and cleaning contacts and ended up resolving the issue after discovering a charred contact on a wire harness located in the trunk above the rear-driver side tire. The issue has only come up again once since cleaning the harness originally, but a wire brushing seems to take care of that. |
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04-26-2022, 01:50 AM | #7 |
Drives: Fireball 700 Join Date: May 2017
Location: TX
Posts: 21
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04-26-2022, 06:48 AM | #8 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 5,124
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Drop the compression ratio with some forged pistons. What is your fuel system setup?
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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04-26-2022, 07:38 AM | #9 |
Drives: 2020 LT1 M6 Join Date: Jan 2016
Location: South, the DEEP south
Posts: 1,114
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[QUOTE=Joshinator99;11165867]Drop the compression ratio with some forged pistons. What is your fuel system setup?[/QUOTE]
I would also really like to know as well. This situation screams pump 93 sbe LT1 with a blower and many prayers. |
04-26-2022, 08:23 AM | #10 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,953
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You could easily get that running back up again for less then 18k.
Get a set of lower compression drop in forged piston/rods kit(GPI) LT5 cam DOD delete LS7 lifters Headers LT4 fuel system Now that you lowered compression you can run 93 octane a lot further and the LT4 fuel system will support a decent amount of power on pump gas. I don't see why you couldn't make upwards of 700-750whp and the car will drive like a stock Camaro. Or do a mild cam instead of the LT5 but that adds substantial cost to the build. Now you need better lifters, valve springs, push rods, VVT lockout kit, trunnion kit...etc.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
04-26-2022, 09:30 AM | #11 |
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Drives: A Tricked Out Mountain Bike Join Date: Jun 2019
Location: Arizona
Posts: 1,962
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What do the cylinder walls look like?
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04-26-2022, 11:18 AM | #12 |
Drives: 2018 Camaro ZL1 A10 Join Date: Feb 2022
Location: Dubai, UAE
Posts: 68
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MSD 2-step==>unburnt fuel in exhaust==>melted cats==>increased backpressure==>broken piston
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Tags |
broken, failure, pistons, procharger |
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