My new 4300 project

[texasranger556]

Glad you got it fixed. It makes sense that shimming the injectors would ****** injection timing, but I'm surprised it was that big of a change!

 

[larboc]

Glad you got it fixed. It makes sense that shimming the injectors would ****** injection timing, but I'm surprised it was that big of a change!

My thoughts exactly, which is why I blew 10 hours tearing back in to check my work. I wish I had taken more pictures during assembly. It would have removed any doubt.

 

[dfkrug]

All I can guess is that 1600 hrs on a pump combined with freshened up injectors combined to ******
injection by a few degrees.

I would not have expected that.

You say the smoke was blue, and not black (or white)? If blue, I would suspect engine
oil burning, and not excessive diesel.

 

[larboc]

I would not have expected that.

You say the smoke was blue, and not black (or white)? If blue, I would suspect engine
oil burning, and not excessive diesel.

Definitely diesel blue smoke. It happened with the misfires and I know the difference in smell. I'm still scratching my head, but it was blue diesel smoke.

 

[larboc]

Glad you got it fixed. It makes sense that shimming the injectors would ****** injection timing, but I'm surprised it was that big of a change!

On second thought, the injectors shouldn't have affected the spillover timing since they aren't connected while in use. Now I'm even more confused. O well I guess, it's running great so I'll just keep working on breaking it in. Seems to have more power than it used to.

 

[steviep]

Glad to see your back up and running. I hope to hear about my engine this week.

 

[steviep]

Well they got the engine apart and the rings were blown out on the #1 piston. Ordered piston kit from mytractor ,ordered oversize with standard rod and main bearings the sales lady was very helpful. Larboc do you have a link to the on line JD company you used

 

[dfkrug]

Well they got the engine apart and the rings were blown out on the #1 piston.
Ordered piston kit from mytractor ,ordered oversize with standard rod and main bearings

I guess the bore was damaged, too? Why replace rod and main bearings? What about the other
cylinders?

 

[steviep]

Actually the bore was in good shape it was just a little out of round. I could have had it just honed but the machinist recommended it to be bored and he's the expert with a great reputation. As far as replacing the bearings they come with the kit so out with the old and in with the new, they are 16 years old.

 

[dfkrug]

If I bored one cylinder and installed the .25mm oversize piston, I would do all three. This is
more important than changing out the main bearings, esp if they are in spec. I did
that on two 955s and one 4300. I would be concerned about out-of-balance condition
with mis-matched cyls.