I hope someone can help me with this little equation. I measured my rod connecting journal and got 1.878 the haynes manual says that it should be between 1.8894 and 1.8900 so i have a difference of 0.0114 . I need a thicker bearing to take up some space but im not sure which size to get. Can someone help me out with the numbers? And am i getting an "Undersize" or "Oversize" bearing? I know the terminology is different between different people..

 

The rod jounal is undersize. So you need an undersized bearing. If you rod was machined out you would need an oversize bearing.

So say you had you block align bored and your crank turned you would need say an .010 over/.010 under sized bearing. Yup both over and under in one bearing. Not necessarily the best choice at that point but can happen.

Your cranks rod journals appear to have been turned .010 under so you now need undersized bearings. Check them all to make sure. Also check your mains.