Engine rebuild, new bearing with new thrust washer question? Please help!

[heindls4]

I know this is super old but hoping to get a question answered. I just installed new bearings with new thrust washers. I did everything to spec and it feels great, no play and spins beautifully. I am about to install the rods and pistons notice the thrust washer has some movement and I am not sure if this is normal or not. I cannot find any information anywhere but my guess is once its fully assembled the bearing will be tight but I am not sure trying to confirm now rather than later. I have not installed the oil pump yet either but still cannot find any information about this. OEM thrust washer and using the IE main bearings. Just need to confirm the thrust washer being able to move or not being acceptable before going to the next step.

[heindls4]

I have looked everywhere and cannot find the information. I removed the 4 set bolts that are found on the outside. I tried to move the crank and it does not have any side to side play but no matter what the thrust bearings are not tight and I assume this is normal but I would like to confirm the correct way they should be. The way the tops of the thrust go can only be installed in one direction in order to go into the groove properly which is with the little indentation facing out and i matched the bottoms the same way and it appears to be ok but I am just unsure not having a good installation instructions make it difficult.

[xRenesis]

Bro, one post is fine. How loose are you talking. If they were tight tight, it would be rubbing and no oil = bad. Also, with no axial load, like pressing in the clutch, you aren't pushing the crank into the thrust bearing

[heindls4]

I have been having issues making posts did not mean to make multiple. They are not extremely loose and from the research I have done they are installed correctly but between all data and the information available it is very limited on the installation process. They only go into the cap one way if you want the thrust bearing to be in the groove so that’s how it is installed. I will try and upload images but basically I can move it if I push on it with a pick however there is no movement side to side on the crank. I just don’t want to go to the next step until I can confirm that it’s normal to be able to move the thrust washer at this point.





Sent from my iPhone using Audizine Forum

[xRenesis]

side to side on the crank you mean thrust washer movement? or crank movement? crank side to side is main bearings. you should be able to move the crank in and away from the thrust washer, axially.

If I'm not mistaken, should be 0.09 - 0.251 mm of play. You need clearance to let oil in, otherwise you're just metal on metal.
https://docs.google.com/spreadsheets...gid=1215775791

[LJS]

side to side on the crank you mean thrust washer movement? or crank movement? crank side to side is main bearings. you should be able to move the crank in and away from the thrust washer, axially.

If I'm not mistaken, should be 0.09 - 0.251 mm of play. You need clearance to let oil in, otherwise you're just metal on metal.
https://docs.google.com/spreadsheets...gid=1215775791

absolutely correct
AXIAL clearance MUST be between .0035 to a max of .0099 inches( .090 to .251 mm)

[heindls4]

I will check it out I figured it was ok but was a little scared as normally after installing the crank I don’t hear noises like that so I was just a bit nervous. I have way too much money into this to hope it works out and unfortunately I have no machine shops anywhere near me so I kind of just want to be sure you know. Thank you for the responses though I appreciate your input.


Sent from my iPhone using Audizine Forum

[heindls4]

Thanks for that link. I didn’t oil or grease the thrust bearing at all because I didn’t see it state to oil it. I watched one video and The guy added grease to allow him to get it on and not fall out but it seems like it may need to be atleast oiled as the bearing is going to be against the spinning crank but I’m just not sure never seen one before haven’t built any engines since about 2008 and none had thrust bearing

[Silverex]

Thanks for that link. I didn’t oil or grease the thrust bearing at all because I didn’t see it state to oil it. I watched one video and The guy added grease to allow him to get it on and not fall out but it seems like it may need to be atleast oiled as the bearing is going to be against the spinning crank but I’m just not sure never seen one before haven’t built any engines since about 2008 and none had thrust bearing

What engine have you built that did not have a thrust washer?

I’d squirt some oil on the thrust from the outside and send it.

[heindls4]

I did a 6 bolt and 7 bolt 4g63 also several Chevy 350 and a 400 and I don’t remember anything like this. I did typically pay to have the lower end put together but not always and I definitely don’t remember a split thrust washer. I do have very little movement and one guy stated it should not move at all but I believe that’s incorrect but not having the proper experience made me question whether it was right. I have several thousand into this so I’m not trying to f it up you know. Thanks for the reply that was the plan I also came to so appreciate it.


Sent from my iPhone using Audizine Forum

[LJS]

What engine have you built that did not have a thrust washer?

I’d squirt some oil on the thrust from the outside and send it.

MOST American V8's have the thrust washer as an intergal part of one of the crank bearing(at least 1) hence no separate part....

[Silverex]

MOST American V8's have the thrust washer as an intergal part of one of the crank bearing(at least 1) hence no separate part....

Yea most arnt like ours but they all need clearance checked/adjusted.