BB Sleeve Oxidization

[funrider243]

Hi All 

Wonder if anyone can help? 

I have a frame with a BB30 bottom bracket. A sleeve was inserted (pressed in) years ago to allow the use of a GXP (threaded) BB and crankset. I wanted to remove it to use a different BB30 Crankset and it won't budge. I'm assuming the aluminum surfaces have oxidized to one another. 

Is there anyway to get this sleeve out without damaging the frame? 

Thanks in advance for any help or suggestion.  

[JoeMerida]

You Say it was Pressed in So It won't just come out. It will need to be pressed out.

[RobertWhitehead]

The sleeve of a BB30 is plastic. 

[Mongoose!]

Usually these sleeves comes with glue and its bonding into the frame when pressed in. Basically, a permanent fix for a creaking or over / under sized missed lined BB?

[Training wheels]

Try to apply heat with a gas flame while pressing it.

[Mongoose!]

1 hour ago, Training wheels said:

Try to apply heat with a gas flame while pressing it.

Not a great idea if the frame is carbon, which I guess is.

[funrider243]

The sleeve is Aluminum and it was pressed in, but to my knowledge, no bonding or glue was used. 

I previously had one of these sleeves in a Swift frame I had.... It pressed in and when I changed cranks, it was just pressed out with the headset press. 

[DieselnDust]

If it was an aluminium sleeve then it is going to require lots of penetrating oil, patience, a quotation for a new frame and a willing insurance assessor 

[DieselnDust]

I’ll expand on the above. Any Aluminium sleeve pressed into an aluminium tube/shell is not intended to be removed. Firstly when you press AL into AL it will gall even with as much grease as can be squeezed between the two. 
Add salt and there will be oxidation further complicating removal. When you remove , assuming the sleeve will Actually move, further galling with affect tolerances which will make the fit of bearings too lose  leading to creaking and premature bearing wear. And then you’ll want the sleeve back  in again. 
so unless you can cryo freeze the sleeve without cooling the bb shell I’d say leave it in or move on from the frame.