roll a set of rod and main bearings in a 5.7 hemi
Asked by Christopher Apr 22, 2020 at 08:16 PM about the 2014 Dodge Challenger R/T RWD
Question type: Maintenance & Repair
anyone ever rolled rod and main bearings in a Chrysler 5.7
before?
I got some bottom end rattle when not under load. ordered
a set of road and mains but I can't decide if this like every
other motor or if there's some curve ball coming at me.
soon as I get them in I'm gonna try. looks like there's some
kinda tab that's going to keep me from just rolling out the
mains. I'm thinking I can probably roll em out anyway
maybe.
last time I pulled this engine it was like 10 hours and I really
don't wanna do that again. if I do that it's gone be a new
bottom end for sure. gonna be worth the time if I gotta pull
it for some bearings.
7 Answers
hummmm.....easy enough ....roll/slide//push.....as long as you clean the rod and cap surface/crank journal. i wont even go into if this is going to be a band aid fix.. if it is a rod bearing ... i would have loved to have listened to it .....
You must have the crank machined in order to replace the bearings.
Christopher answered 4 years ago
guess I'll post a video of rolling a set of bearings for you guys that think its some kinda bandaid fix thing. it's actually standard oem procedure for pretty much engines if not all engines. bearings are in fact a where out item just like timing sets and oil pumps. very few but some engines require the removal of the engine to change them. most can be done inframe. and since I'm not about to ruin an engine I'm going to change mine. either inframe or if I have to pull it I'm going to replace with a fresh bottom end. I do not have a spun bearing yet and I'm not knocking i have noticed a change in the sound of my bottom end that seems to indicate to me that a main bearing maybe getting Los and I'm at 90k so it's probably time. https://youtu.be/DSZiRBYgBNc this is a tractor but its a very clear video of the procedure minus the actual tools lol now back on topic. anyone who has tried to roll a set into a modern hemi let me know how it went for you. if I have to pull this thing I'm going back with at least a 410 bottom end.
Sounds like a waste of money and time.
Christopher answered 4 years ago
it's differently a waste of money. 100% agree. but no. you do not need to have your crank turned to change your bearings. I have never heard of that before. bearings are softer then cranks so unless you ignore a problem for a long time and actually spin or stack them. your crank meets your block or something hard gets swept in there. your crank will be fine. that's kind of the point of the little shell being there in the first place. forget it. I'll find out and let you guys know probably next week.
You can change the bearings without machining the crank just like you can do any job incorrectly. Go ahead but the engine will FAIL sooner rather than later.
