I think motor is blown - Page 4

Crazy Drywall Guy · 03-11-2022, 09:38 PM

Pictures

Crazy Drywall Guy · 03-11-2022, 09:40 PM

Picture

95 imp · 03-11-2022, 11:34 PM

Hard to tell from the pics.. the first one is kinda blurry and the second one there appears to be pits and little metal chunks.

Are there pits in the crown and/or the head chamber?

Kerry · 03-12-2022, 12:52 AM

Quote:

Originally Posted by Crazy Drywall Guy

Looks like no major cylinder damage,can't even feel it. Bank 4 on driver's side is the only cylinder that fail leak down test.

Now u have found the real problem!! Glad u got it before any major damage.

Crazy Drywall Guy · 03-12-2022, 05:13 AM

Quote:

Originally Posted by 95 imp

Hard to tell from the pics.. the first one is kinda blurry and the second one there appears to be pits and little metal chunks.

Are there pits in the crown and/or the head chamber?

It not pits,it's little drops of antifreeze. It's the back cylinder so it's almost impossible to take a good picture,but if you look close there are darker vertical streaks on the cylinder wall.

wnta1ss · 03-12-2022, 05:17 AM

Quote:

Originally Posted by cjperformance

I'm a noob, but your setup is so similar to mine... what jumped out at me... The maf lbs/min for 11 psi in 55 degree ambient weather looks low at 76 lbs/min... so guessing the maf scaling might have been off. On my own setup, at 8-9 psi I see 78-80 lbs/min at similar rpm and ambient temps... so I would have *GUESSED* (because I dont really know) that lbs/min should be proportionately higher. Looking for more experienced input there... I dont have any context to know what airflow lbs/min should look like at 11 psi vs 8 or 9 psi.

What you're saying (MAF cal off) makes a lot of sense. If there is more air going in than the ECM knows about, then of course it will be leaner than intended. Commanding .81 and getting .87 sure looks like a calibration problem.

cjperformance · 03-12-2022, 07:17 AM

Thanks for the pics. Would love to see the piston when it comes out too. Ive seen the log and seeing the associated damage helps to put the bigger picture together for me.

95 imp · 03-12-2022, 08:21 AM

Pics are awesome and thanks for the clarification. It's hard to get to those back cylinders.

Pull the piston and maybe you can get a better pic.

On both I see the bore marks, but the first one is blurry, and it looks like that area on the piston crown by those bore marks is pocked. Hard to make out what's up in the second pic (piston wise).

On the other side of the coin, if you did lean out, that would/could cause seizing.

The skirt and crown to the first ring will have more clues as to what happened too.

Crazy Drywall Guy · 03-12-2022, 04:55 PM

😥

95 imp · 03-12-2022, 05:44 PM

Pics of the crown and the skirt, please?

Crazy Drywall Guy · 03-12-2022, 05:53 PM

Crank looks good ,but looks like the bearings took a hit

Puddin · 03-12-2022, 06:02 PM

Quote:

Originally Posted by Crazy Drywall Guy

😥

Any luck finding the piece/pieces of piston missing?

Crazy Drywall Guy · 03-12-2022, 06:07 PM

Quote:

Originally Posted by Puddin

Any luck finding the piece/pieces of piston missing?

Yes,they were still on the piston until I pulled it out of the cylinder.

Kerry · 03-12-2022, 06:57 PM

What oil are u running?

03-11-2022, 09:38 PM	#43
Crazy Drywall Guy Drives: 2018 Chevy Camaro 1ss Join Date: Nov 2020 Location: Clare MICHIGAN Posts: 62	Pictures Attached Images

03-11-2022, 09:40 PM	#44
Crazy Drywall Guy Drives: 2018 Chevy Camaro 1ss Join Date: Nov 2020 Location: Clare MICHIGAN Posts: 62	Picture Attached Images

03-11-2022, 11:34 PM	#45
95 imp Dumb Ass Deluxe Drives: A Tricked Out Mountain Bike Join Date: Jun 2019 Location: Arizona Posts: 1,959	Hard to tell from the pics.. the first one is kinda blurry and the second one there appears to be pits and little metal chunks. Are there pits in the crown and/or the head chamber? __________________

03-12-2022, 07:17 AM	#49
cjperformance Drives: 2017 Camaro SS 50th Anniversary Join Date: Apr 2021 Location: Missouri Posts: 934	Thanks for the pics. Would love to see the piston when it comes out too. Ive seen the log and seeing the associated damage helps to put the bigger picture together for me. __________________ 2017 50th Anniversary Edition \| P1X Stage 2 DSX Aux Low Side \| LT4 high side \| Flex Fuel TooHighPsi Port Injection (installed & tuning) CircleD 3K Stall \| QA1 CF Driveshaft Forgestar F14 Drag 17x10 NT555R2 305/45/17 Rear Forgestar F14 18x8 NT555G2 235/50/18 Front 10.84@131 w/4.13" pulley ??.??@??? w/3.7" pulley (installed & tuning)

03-12-2022, 08:21 AM	#50
95 imp Dumb Ass Deluxe Drives: A Tricked Out Mountain Bike Join Date: Jun 2019 Location: Arizona Posts: 1,959	Pics are awesome and thanks for the clarification. It's hard to get to those back cylinders. Pull the piston and maybe you can get a better pic. On both I see the bore marks, but the first one is blurry, and it looks like that area on the piston crown by those bore marks is pocked. Hard to make out what's up in the second pic (piston wise). On the other side of the coin, if you did lean out, that would/could cause seizing. The skirt and crown to the first ring will have more clues as to what happened too. __________________

03-12-2022, 04:55 PM	#51
Crazy Drywall Guy Drives: 2018 Chevy Camaro 1ss Join Date: Nov 2020 Location: Clare MICHIGAN Posts: 62	😥 Attached Images

03-12-2022, 05:44 PM	#52
95 imp Dumb Ass Deluxe Drives: A Tricked Out Mountain Bike Join Date: Jun 2019 Location: Arizona Posts: 1,959	Pics of the crown and the skirt, please? __________________

03-12-2022, 05:53 PM	#53
Crazy Drywall Guy Drives: 2018 Chevy Camaro 1ss Join Date: Nov 2020 Location: Clare MICHIGAN Posts: 62	Crank looks good ,but looks like the bearings took a hit Attached Images

03-12-2022, 06:57 PM	#56
Kerry Drives: 2019 2SS Camaro Join Date: Apr 2012 Location: Al Posts: 828	What oil are u running?

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