302 Cylinder Wall Damage


Joined
May 1, 2026
Messages
3
Points
1
City
Boston
State - Country
MA - USA
Vehicle Year
1994
Vehicle
Ford Ranger
Drive
2WD
Engine
4.0 V6
Transmission
Manual
Hi Everyone,

Prepping for a 302 swap into my 94 Ranger Splash. Over the weekend, I cracked open the long block I bought and saw this. Anyone with more experience than me know if this is runnable?

I bought GT40p heads, reusable ARP head bolts, and fel pro head gaskets. My current plan is to torque the new heads down and run a compression test with lubricated cylinder walls. I am okay with burning some oil, but is this a loss? Should I just buy a new short block? Maybe bore this out?
 

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Is that a pit that you can catch your fingernail on or just discoloration? That close to the top I would be tempted to just run it if it's not deep or an actual hole. If it's discoloration I'd just run it and not even think about it.

Doesn't look like there is much cross hatch left in the cylinder walls, if any. Guessing that engine has some miles on it for sure. If it runs good, who cares. I am sure a machine shop would want to bore it a bit. Necessary to have a good running engine though? Probably not.
 

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