Cylinder scratch

Im currently repairing a Ford 8N tractor that has has not been running since last year. The blue smoke tempted me to replace the rings so I took it home for replacement. While removing the pistons, 3 of the wall have only slight natural wear but the last cylinder closest to the radiator has one scratch that runs along the top half of the wall. Would it be best to put a sleeve on the wall or attempt to hone it and see if it buffs out?
 
Yes at the top of the cylinder but as the scratch goes lower into the cylinder I can not. My basic concer is does it need a sleeve or rebore for one scratch?
 
Well to start with and this in the long run will help you out big time. #1 cylinder is the cylinder closes to the radiator and #4 is the one closes to the steering wheel. They go 1,2,3,4. As for your cylinder problem hone it and see if that clears is up. If honing it does not then you will need to do all 4 sleeves or you will have a mismatched engine which is not good to have.
 
if honeing it gets it to where it won't catch a fingernail.. you may be good. otherwise.. all the holes are sleeved anyway.. no need to bore.. just snatch and replace..
 
That was kind of my thought. Just pull the one bad one and get another made up so it matches the other 3.

Hopefully it wasn't a piece of broken ring that scored it. If so it would have to be replaced and I would do all the rings at that point.
 
i'm not sure about the made up to match comment.

the sleeves are a standard size... just get a new sleeve and new rings.. and heck.. hone and rering the others, and then ream the ridge at the top.. they will all likely be about the same comp untill stuff seats on the new one anyway.. :)
 
You can get a rebuilt kit off this forum for $189.00. It includes new pistos, sleeves, rings and some gaskets. Have your crankshaft measured for wear at your auto machine shop. Buy your new bearings from them. They won't grind it undersize unless it needs it. Have them grind the valves. You will then be set for a long time. Hal
 

Your choice..would make sense to do all 4 of them while it is apart..

Dry Ice is very useful for Sleeve removal AND sleeve INSTALLATION...!!!!!!!!!!!!!!!!
BE SURE the sleeves get as COLD as they can in a cooler with Dry Ice...
When someone says "Slip the sleeve ALL the way DOWN QUICKLY"..they MEAN QUICKLY...!!!
I think most would say to just fracture the sleeves with a sharp chisel, and pull them out..
While the engine is down, look to see which adjustable valve tappets you have..
The Flat-Top ones (adjustable) are preferred..
The Rounded-Top ones (adjustable too) can swell and get to hanging in their bores..
Hope you have a GOOD Steering box..!!!
Good Luck and Have Fun..!

Ron..
 

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