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12-02-2021, 07:18 AM | #1 |
Scooby Newbie
Member#: 416465
Join Date: Mar 2015
Chapter/Region:
NESIC
Location: Vermont
Vehicle:2009 Impreza 12 WRX |
EJ253 Cylinder Wall Pitting
Pulled my first engine this past week on my 09 impreza for head gaskets and valve seals, and noticed this small pit on the cylinder wall on #4. This is the first time this engine has been pulled apart and previously I have only ever heard piston slap at very cold temperatures (<15F). It does burn a fair bit of oil at 112k miles however the spark plugs had oil all over them when I pulled them so I think that valve cover gaskets and valve seals are the bulk of the oil problem. You can see the pitting on the right cylinder at the bottom in the picture, and I can barely feel it with my fingernail. Any input is appreciated!
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12-03-2021, 07:07 PM | #2 |
Scooby Specialist
Member#: 283429
Join Date: May 2011
Chapter/Region:
South East
Location: Down yonder.
Vehicle:2016 Fuji Sunfire 03 Silver |
How about a better photo with this pitting in focus. Can't tell much when I look at that photo full resolution - right now it's so fuzzy it looks more like a nick from dropping something pulling the head...
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12-06-2021, 07:30 AM | #3 |
Scooby Newbie
Member#: 416465
Join Date: Mar 2015
Chapter/Region:
NESIC
Location: Vermont
Vehicle:2009 Impreza 12 WRX |
Yup I can get another picture when I get back in the shop. FYI I can barely feel it with my finger and nail. Makes me think it will just wear on the ring and burn a bit of oil. Guessing it will last another 80k? Rust will probably limit that anyway
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12-16-2021, 02:01 PM | #4 |
Scooby Newbie
Member#: 416465
Join Date: Mar 2015
Chapter/Region:
NESIC
Location: Vermont
Vehicle:2009 Impreza 12 WRX |
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12-16-2021, 02:56 PM | #5 |
Scooby Specialist
Member#: 515308
Join Date: Jun 2020
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Looks fine, ain’t nothin
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12-16-2021, 04:50 PM | #6 |
Scooby Specialist
Member#: 395275
Join Date: Jul 2014
Chapter/Region:
RMIC
Location: Fort Lupton, CO
Vehicle:2012 STi SWP |
I wouldn't be concerned about that either. its not going to be a big issue
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12-17-2021, 07:53 AM | #7 |
Scooby Newbie
Member#: 416465
Join Date: Mar 2015
Chapter/Region:
NESIC
Location: Vermont
Vehicle:2009 Impreza 12 WRX |
thanks all, threw the heads back on, messed up the torque pattern and had to re do it. What a learning experience this has been!
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