Cracked cam bearings

[stroker mike]

3 of the cam bearings in my 318 were cracked. Do I have a cracked block? I JUST bought this motor today, was supposed to be pretty fresh.

 

[rumblefish360]

magnaflux time!

Bearings will crack from heat

 

[stroker mike]

I will post a pic tomorrow. See what you think.

 

[moper]

Could be anything. If the block is cracker the bearings would simply turn in the bore so I'd think that part is probably ok.

 

[fugly]

Are you sure they are cracked? Some of them have a parting line (usually somewhat invisible) from the factory- if it is visible, somebody probably put them in with the wrong or no toole- If they are very straight lines, that is likely what you are seeing...

 

[stroker mike]

Take a look at this. Yeah, I'm sure it's cracked.

 

[stroker mike]

here's another

 

[moper]

Ok, that's not cracked. That's delaminated. No big deal. Just replace the bearings and make sure the cam rotates freely by hand with the new bearings. Those bearings are not new.

 

[limelite70]

some definitions of pretty fresh could mean a power wash and some paint.

 

[stroker mike]

Awesome! That makes me HAPPY! No, they are not new. The rod and main bearings are though, right on! Thank you so much! That's what I needed to know.