Should I be concerned with this bearing?

[Drewster]

I was cleaning up my number 2 bearing thrust surface to set the clearance and with a few swipes the copper was gone in this section. Do you think I will be OK? This is already my third set

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[Drewster]

Here is one that I did not sand They are FM107M. Um. I may have answered my own question

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[thadeal4real]

What's the problem?

 

[Drewster]

Was just curious why I can see the different coatings on the thrust of a FM107M. I though I may have sanded it off but when I looked at a untouched bearing i could see the different coatings on it also near the parting line


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[baby6]

Looks good to me.

 

[Drewster]

Kinda what I thought after I saw the same pattern on the untouched bearing


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[J-B Racing]

wrong thread

 

[Steve V]

Thrust clearence must be way tight if you are sanding the bearing?

 

[Chuck Leeper]

3rd set? What happened to the first 2?
I put a slight bevel on the parting one on the thrust side. Allows pressurized oil to "sneak" onto the thrust surface.

 

[Drewster]

The first set was a standard set and found out the line bore /hone was .001 over-sized so I couldn't use that set.
The other two sets were -1 mix and match sets. I now have 0020 - .0022 oil clearance and .007 thrust clearance.


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[Steve V]

The first set was a standard set and found out the line bore /hone was .001 over-sized so I couldn't use that set.
The other two sets were -1 mix and match sets. I now have 0020 - .0022 oil clearance and .007 thrust clearance.


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Nothing wrong with those clearences. I would want my line bore within spec though--IIRC the spec is +/- .0005--someone will correct me if I am wrong. Lots of shops screwing up line bore on these engines--beware.