IH3444
Veteran Member
- Joined
- Jan 10, 2004
- Messages
- 2,115
Eddie, you need to investigate this, that's quite a bit of a change, and I agree that the pump, and crank should have been checked. Manufactures also make rod bearing a bit oversized by a .001", and also .0015" just for a good crank that's a bit worn undersized. I installed new standard sized rod bearing in my IH3444, with new oil pump gears, and also did the shim for the relief spring. The crank was fine, but worn undersized .001" on two outer journals, and .0015" on the two inner journals. The factory manual states that 35psi is fine, but mine now has 45psi, hot, and I'm fine with that. What does the Cummings diesel handbook state? What oil weight are you using for break in? Did you run a straight weight oil for the older engine?