How much side to side play should there be on the rod bearing cap?
Just redid the conrod bearings on my 15T but didn't check the side play. I do remember doing the bearing clearance test where you tap with a small hammer and put your fingers on the cap to crank junction to "feel" for movement. It was very difficult to see the movement but you could feel it. As a guess .010" to .030" ?
New there should be about.005-.010 but if they have been in there a while they have found a home, I have seen almost an 1/8 and it was still running fine?
Thanks...these seem to be around .025 give or take...and have been there for quite so time.
I got a motor like that in my T.
There should be .005" side play (front to rear) on correctly made connecting rods.
With that said, I have found over .050" on re-babbitted rods sold by the major parts vendors. Have also found many re-babbitted rods that are not straight or very "off center" because they evidently flexed in the fixture when they were machined. These "bent rods" generally are not found by the average hobbyist because most people don't have a fixture for checking rods and besides, everyone knows there wouldn't be anything wrong with a brand new part right? What will happen if you install a bent rod is that every time the crank shaft goes around, the rod works forward and backwards on the journal and wears the "thrust" surfaces off the rod bearing. Eventually you will find little chunks of babbitt in your drain oil about the same time they start to make noise...
Adam, I found that years ago, that is what made me to start pouring my own!