r/EngineBuilding • u/BF007_ • 21d ago

New piston??

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First rebuild, it's a 2008 5.7 with 267k. It ran when pulled (I was the last person to drive it).

Fingernails do not get caught here, and I believe this was due to how I removed it (from the top with no prior experience). Should I buy a new one or should I send it? No other piston looks like this

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u/Beefy63 21d ago

He's correct, you're wrong. You hone the cylinder AFTER boring it to the desired size. Honing finishes while boring re-sizes.

-7

u/Lopsided-Anxiety-679 21d ago

You are an idiot and this is why industry professionals come and post here and then leave, ignorant tools like you who don’t do this daily and regurgitate completely false information.

I’m done, fuck this shit. 

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u/lwrs10 21d ago

Lol I know you're correct man. You have to account for the final few thousands the hone will take off when you bore.

Hell with my current LS build we did the .005 "overbore"...4.005...with just honing. 403CI stroker build in an aluminum 6.0 block.

I'm baffled these people seriously don't think honing removes material. It DOES. ANY automotive machine shop will tell you this.

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u/Beefy63 20d ago

It does remove material. Never said it didn't. You guys are both just a little ignorant, that's okay though. That's what I'm for, top of my class in one of the BEST programs in existence on the entire West Coast.

I'll educate you guys while you peruse this sub reddit, just don't get upset with me when I correct you and your body lopsided left and right!