Engine/Transmission (1994 - 1998) In frame re-ring

[2Farr]

Has anyone ever tried to re-ring their 12v without removing the block from the truck? I have a 98 12v that smokes when warming up and when accelerated hard. I was going to pull the head and see if the cylinders did not have much taper and not much ridge I thought about just ball honing and re-ring it with a valve job. number 5 & 6 look close to the firewall, so these pistons might be tricky to remove.
Any thoughts?
Thanks,

 

[ata]

Yes, it can be done. Like said 5-6 are no fun. The only thing that really is fun is cutting the ball hone stem the right length. As for taper these blocks are hard. So I don't think that will be a problem.

 

[Cummins12V98]

Miles on engine, stock?

 

[Joseph Donnelly]

Unlike big truck engines, the B block isn't so heavy, in the 240-260 lb range depending on which one. Take it out so you can clean out all the grit thoroughly.

 

[Joseph Donnelly]

Oh, a second consideration is that the ring lands in the pistons are probably worn as well, so they should be replaced.

 

[GAmes]

At 800k there was still cross hatch at the top of the cylinder walls and no ridge in my engine. However, the taper required a .020 bore. I can only imagine the difficulty of trying to R & R the pistons and honing the cylinders with the engine still in the truck.