Cylinder Wall Scoring

[buickanddeere]

I agree that while treating the symptoms is resulted . Still have to find the cause of the problems and eliminate it .

 

[rustred]

It could be as simple as being broken on assembly. Dont know if it has had a prior work done to it ? If you dont have that ring compressor tight enough and u smack it down it will break that ring. You need to have finesse when installing pistons. Not just hammer them in. I have always used my ball peen hammer handle by tapping them in. Maybe thats a question that should be asked also , see how people actually install pistons. Including orienting the rings.

 

[the tractor vet]

Broken rings can be a sign of EITHER being used . It can be a sign of over fueling incorrect timing . with the Amount of carbon build up this has been going on for a long time . when you get many years under your belt of working on engines you gain why it failed early . While at Ford and involved in the lets go fast We had a lot of time building our wild ideas and putting them to the test and see what they would take When you placed your creation on the dyno and straight armed the throttle and put the load to it and it was just not a full throttle run up it was keep it there till the pipes were cherry red and if it went KERR BOOM and pieces flew then ya dug into what FAILED FIRST so the next time what failed did not fail . Ya want to KILL a D 361 then use either , ya want to turn a old 2 stroke Detroit into a hard starter then use either , fastest way to break rings . Yea i have rebuilt them . what ya learn over 60 plus years .

 

[Mike M]

I sure would of thought the top rings would of got the most damage ?

 

[dhermesc]

Starting fluid will do that to any engine - not just small, imported diesels. Being such a small tractor good chance the owner's experience with diesel engines is limited and his care and maintenance of it was spotty. Shooting either into a diesel drying to get it to start with clogged fuel filters has ruined many engines.

 

[Fritz Maurer]

Not to contradict anyone I dont have any evidence either way but I wonder if the ether breaking rings jazz is just an old wives tale. I know, it sounds absolutely horrible when knocking. The reason I ask is why would Ford, on the 9700, put an ether injector on the engine if ether is so dangerous. Moreover, its not even a measured shot like a Quick-Start, you can empty the whole can in there if you want to. Im just wondering how any manufacturer can equip an engine with ether injection without being worried about the tractor coming back with broken rings under warranty. Is the warranty void if you hit the ether button?

 

[buickanddeere]

Over pressure and the shock wave of the ether detonating in the combustion chamber long prior to the piston being at TDC is what breaks rings , blows head gaskets and damages rod bearings.

 

[Fritz Maurer]

We are all aware of the theory, the question is why did
manufacturers put these ether systems on their engines
and risk damage, for which they may have to pay for
under warranty?

 

[rustred]

I have trouble believing the bottom oil broke due to starting fluid. Damage would be at the top of piston and top
ring. Plus look at them ring end gaps. They look pretty wide to me, and yes I know they must be squeezed in the cyl. For the actual gap. I have personally saw the wrong rings installed in a 900 case tractor. The rings were too small for the cylinders like 1/8 the tractor had to be pull started. I tore it fown and thats what I found. Put in the proper rings and it started good after that.