Foreign Object Damage Pictures.
 

I'm so glad the only damage was my turbine wheel....


http://boostedmiata.com/random/pistons/IMG_6438.JPG

http://boostedmiata.com/random/pistons/IMG_6439.JPG

http://boostedmiata.com/random/pistons/IMG_6440.JPG



the only damage to the head:

http://boostedmiata.com/random/pistons/IMG_6441.JPG

ouch

Why are your engines so hungry? Dont let them get a taste for blood!

cause i do dumb things :P

http://boostedmiata.com/new_miata/ba...ent_blade1.jpg

this was the only real damage...screw got lodged in the turbine and bent the shaft. Still made 232rwhp after fixing the turbo. I'm lucky, I've seen really bad damage from FOD, I had to pull my head today, so I finally got to see the innards.

What doesn't kill you makes you stronger. Same applies to pistons? :)

Gotta love the near perfect TB screw imprint on your piston. Amazing that it passed thru the engine and didn't do more damage. You should have bought a powerball tix that day. :p

Wow, that is amazing. Perfect screw imprint ftw.

Any fears of bent rod? You going to, or did you check that cylinder for TDC vs the other 3? Being in the "squish area", I dont think the gap there between the piston tops and the head are enough to fit that screw is it? Cant tell how far it pushed into the head, but it doesnt look very deep into the piston.

ya bent rod or bent valve/bad seat. Anyways the pics are cool

That'll buff right out.

Screw was made of brass. It's okay, car still makes power; drove everyday for another 5 months on it like this, dynoed at 232rwhp. It hasn't failed yet, I doubt it will anytime soon.

https://www.miataturbo.net/forum/t23478/

Do you preceed these events with the phrase "Hey, watch this" ;)

Fixed.

Oooooooh. I thought this was a new thing or something. Ok, good to hear its all ok.

Definitely, its homebrew shot peening! :giggle: