94' Kubota M7950DT engine??

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
35,429
10,622
113
Sandpoint, ID
Well guys I dont have any easier way to say it...... the compression never changed. We did more atf in the cylinders let it sit 3 days. Today I put the torpedo heater on the bottom of the engine to try and add some heat into the block while the atf was still in there. Then got that stuff out of the cylinders and poured MMO into them let it sit about an hour and half with the heater on the block again. I then got that stuff pyked out of the cylinders. Then wiped everything off and did a compression test on the first two cylinder from the rad and still no change. If anything they were a tad bit lower. We did adjust the valve lash right about 0.10. That didnt make that much any change.
Idk now can I Re-ring this tractors pistons without pulling the whole engine??? Like could a guy pull the head and the lower pan to get to the caps and pop the pistons out through the top. Plan to re-ring them and maybe put a slight crosshatch on the liners from a ball Hone and put back together?? Im at a wall and wondering how far its gotta come apart?
Reringing that engine in frame is quite an undertaking.
You need to get the head off and measure bores.
If they are too large you'll need to re-sleave the engine and that will require a complete tear down.
 

Orange1works

New member

Equipment
M6950DT/M7950DT
Nov 4, 2025
15
1
3
41
Western PA
Reringing that engine in frame is quite an undertaking.
You need to get the head off and measure bores.
If they are too large you'll need to re-sleave the engine and that will require a complete tear down.
Well I suppose I get some time again here i will rip that head off. Today was a busy day I was fixing stuff on my car trailer and mowing today. Im on afternoons next week so I will see if I get a chance earlier to take that head off to check the bore.