19-08-2021, 09:56 PM
Derek, in order to sleeve the shaft they will have to take more material off, in order for the sleeve to have adequate strength/ thickness - you can't just make a 4 thou thick sleeve.
What I can say is that I have at least one engine in which this has been done - on the front bearing, which is a smaller diameter, but doesn't support a flywheel - without any troubles; so you can take some comfort from that. Care will be needed not to foul the end of the taper, which might result in the flywheel not seating properly.
That said, if you sleeved up to the next metric size - 35mm perhaps - you would preserve more of the shaft's strength.
I must say for only 4 thou I would look at plating options as Robert suggested.
What I can say is that I have at least one engine in which this has been done - on the front bearing, which is a smaller diameter, but doesn't support a flywheel - without any troubles; so you can take some comfort from that. Care will be needed not to foul the end of the taper, which might result in the flywheel not seating properly.
That said, if you sleeved up to the next metric size - 35mm perhaps - you would preserve more of the shaft's strength.
I must say for only 4 thou I would look at plating options as Robert suggested.