Thread: 3512 BBC rusted cyl to bore?

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well if you go past .060+ bore you can never go back how many holes need to be sleeved one or two you may want to do that if you can and have it at 030 but if bad 060 may not help clean it up . i had to sleeve them were rust has devour the bore were 100 would of not cleaned it up i get 100 a hole that for the sleeve and to bore and drive the sleeve in and finsh bore the sleeved hole your machine shop should have some ideal what it will take they may have to run the boring bar to see were they may clean up at .if you have them sleeve go to some one that knows what they are doing i seen some very bad jobs if done right you will have a hard time finding the repair i step them in at the bottom this is the best way to do them .i have done many and is a good sound fix.i have them in alot of race engines