Rebuilt Engine "Break In"
Oversize cam bearings have a larger OD and a stock ID. They are used to repair damage to the block if a cam bearing spins and removes material. Simply installing a stock bearing will not work because the hole in the block is larger after the bearing spins. The machine shop line bores all the cam bearings to a larger diameter, usually like .010. Then the new bearings are installed.

Well, I didn't have money to get new springs for a new cam. So he turned it because it was cheaper on my end. $3000 for the bearing replacement, turned cam, new knock sensor, new MAP sensor, new torque converter and some other stuff is way over budget. So I couldn't go any further over my budget than I already did or my gf would go crazy....er
Okay, supposed to get car back this Thursday or Wednesday. He said the rings and the pistons were new and he had to "redo" them when he took apart the engine. I'm guessing he meant he had to take them out for the cylinder check at the machine shop and put them back in. This won't affect anything with the rings sitting will it?
Not being a smart *** but what is the reason you don't like them. No one ever seems to give one.
Since my mechanic had to remove my pistons to get the cylinders checked for the boar of the cylinder and for any scoaring, will the piston rings have to be seated again or how does this work?
?
And also, what does seating the rings really mean? Is it trying to get the rings to expand kinda to be tight on the cylinder or the rings getting pushed down on the pistons? Trying to learn things from the experts
And also, what does seating the rings really mean? Is it trying to get the rings to expand kinda to be tight on the cylinder or the rings getting pushed down on the pistons? Trying to learn things from the experts


