HI all, I did quite a bit of research on different venues in dealing with my issue, I have one scored cylinder. on my 240 efi, Local generic machine shops do not have proper equipment to facilitate boring due to the bottom of cylinder not being free from the bore bit to fully get to the bottom of cylinder. My thoughts are to resleave. I have read many poss on other sites that say that the block can be put in the oven at 450 degrees the expansion rate of aluminum will exceed that of the steel sleeve allowing the sleeve to easily slide out, the new sleeve which will be in the freezer then can be inserted. Now to my question has anyone done this? Also can I simply heat up the block slide the existing sleeve up 2-3 inches allowing my local machine shop now to be able to fully bore/hone the existing sleeve, then reheat and slide back in then measure bore to determine how much oversize I may need to go on the piston. It is my understanding that with the 2 stroke going + 20-30 thousands over in one cylinder only is acceptable. any thoughts...no flaming..as I said I am simply trying to research and devise a cost effective approach. all the other cylinders are fine and I would at least re-ring the other pistons and scuff up cylinders with scotch bright so as to aid in seating rings in the other cylinders.
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