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  #1  
Old 04-17-2016, 09:17 PM
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Louavul Louavul is offline
 
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Default Engine Case Half Pitting

Anyone seen anything like this before? Right side O-360 engine case half pitting where the cylinder base interfaces with the flange on the engine case. Will be calling ECI in the morning to get their take on it.

http://s870.photobucket.com/user/lou...tml?sort=3&o=0
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  #2  
Old 04-17-2016, 09:52 PM
BillL BillL is offline
 
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That looks more like casting porosity to me. Has that surface been machined beyond factory original?

Typically, this is considered as part of the material strengths for a cast part so it should not add any concern about material fatigue strength. A more specific answer would be in order from an expert that will be standing behind their work.
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  #3  
Old 04-17-2016, 09:54 PM
tim2542 tim2542 is offline
 
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That's not wear or fretting and machine marks are still present, so those imperfections were there last time it was machined, I think your fine.
I'd guess those were inclusions or gas bubbles in the casting.
Tim Andres
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  #4  
Old 04-18-2016, 12:30 PM
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+3 on hydrogen gas porosity generated during casting. I would talk to the vendor about it.
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  #5  
Old 04-18-2016, 07:06 PM
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Bob Kuykendall Bob Kuykendall is offline
 
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If you're really worried, I can Photoshop that out for for you, no problem.

Thanks, Bob K.
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  #6  
Old 04-18-2016, 11:38 PM
PCHunt PCHunt is offline
 
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Quote:
Originally Posted by Bob Kuykendall View Post
If you're really worried, I can Photoshop that out for for you, no problem.

Thanks, Bob K.
I got a good belly-laugh out of that one!
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  #7  
Old 04-19-2016, 11:22 AM
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Louavul Louavul is offline
 
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Default Pitting?

To close the loop on my question, Engineering at ECI/Continental Motors states the following;

?Porosity in casting. Cosmetic, should not affect torque or hold down.?

So, just as those that offered opinions suggested. I just needed to be sure it didn't have a Swiss cheese syndrome.

Many Thanks
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  #8  
Old 04-19-2016, 07:35 PM
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Weasel Weasel is offline
 
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its junk. Hey I will take it off your hands so you wont need to worry about it.
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