Originally Posted by
bigmatt
I changed the rod and installed a ceramic bearing at 2 gallons on my mg-66. Only because we are supposed to do it after break in. But the rod was still tight and the rear bearing,well I did it because I had one laying around and engine took apart. I do have a 7 port with 12 gallons on it. Changed rod twice? bearings once.
Yes, a lot of posts along those lines about when to change.... As Marks local driver he wanted to leave it in on purpose and keep an eye on things to get an idea how long they can last etc... I normally wouldn't leave it that long myself, but at least now we have a better idea on its life span from new in a new tight engine.