4 im here again
New Member
- Joined
- February 14, 2025
- Messages
- 2
- Reaction score
- 0
- City, State
- Placentia, CA
- Year, Model & Trim Level
- 2005 Explorer 4.0L V6
Hi.
@2000StreetRod
My cam bearings on 2005 4.0L SOHC V6 shows spots of sharp dimples. they are like grain of sands that took some bearing out. i feel them with fingernails. they catch. however there is no scoring marks. everything smooth with thumb going around. so surface adhesion to camshaft is working i think. but just want to know where these pecks came from. they are all over the first bearing on driver front. it looks like if the bearing was coated and the coat came off. One thing that interests me is it’s even on a surface that the camshaft didn’t sit on. on the first camshaft bearing, the pack of divot are all over the surface and it’s even on the area that the camshaft didn’t sit on.
where you see the scoring mark is where the camshaft ends so the area on the little bit of the left theres nothing that sits there and even in that area there’s a peck towards the top. This is more apparent on the driver side overall along the other three bearings, they all have some dimples like this. for the passenger side theres just one or two for each bearing or none at all, which is really nice
would like to know if this is a normal condition and if it’s OK to run, I try to sand it with 3000 grit just a little bit but it was hard to do because of sharp edges on the bearing. It would catch the sandpaper.
@2000StreetRod
My cam bearings on 2005 4.0L SOHC V6 shows spots of sharp dimples. they are like grain of sands that took some bearing out. i feel them with fingernails. they catch. however there is no scoring marks. everything smooth with thumb going around. so surface adhesion to camshaft is working i think. but just want to know where these pecks came from. they are all over the first bearing on driver front. it looks like if the bearing was coated and the coat came off. One thing that interests me is it’s even on a surface that the camshaft didn’t sit on. on the first camshaft bearing, the pack of divot are all over the surface and it’s even on the area that the camshaft didn’t sit on.
where you see the scoring mark is where the camshaft ends so the area on the little bit of the left theres nothing that sits there and even in that area there’s a peck towards the top. This is more apparent on the driver side overall along the other three bearings, they all have some dimples like this. for the passenger side theres just one or two for each bearing or none at all, which is really nice
would like to know if this is a normal condition and if it’s OK to run, I try to sand it with 3000 grit just a little bit but it was hard to do because of sharp edges on the bearing. It would catch the sandpaper.
