Gotta issue. Have a 70 model 455 that was recently rebuilt. Bored .030 with 3 cylinders requiring sleeves due to poor casting material. Motor sat up 3 years so had a buddy tear it down to make sure everything was peachy with it sitting up and all. Anyways after teardown, we find a scratch in the cylinder wall (one of the sleeved ones) that you can catch a fingernail in that runs up and down the cylinder bore. Question is....Is there enough meat to a sleeve to take it to a .038 bore or do I need that cylinder resleeved with a .030.? Motor was never run and far as I know(i never did at least) never turned over. Wish I would have found another block to roll with 3 years ago....but didnt.....and here I am. (trying to keep those dang #s matching) Motor is set up to be a strong street engine and I drive em like my tail is on fire :stmad: so any advice would help. (even if it is something I may not want to hear:laugh: Wayne
They make sleeves in several different thicknesses, but even the thinnest sleeve would allow you to bore the block to .038 over. The question would be, how deep is the scratch? Jim Burek
First of all, thanks for replying Jim. I truely value your advise and information. :beer Anyways........ Im not positive of the depth, but would estimate in the area of .004 to .005 at the most.. Again.... just to the point you can barely catch your fingernail in. The pistons that are/were in the motor are the hyper's(please dont make me spell it:error: ) that have a .002 to .0025 piston clearance within the cylinder. No additional honing has been attempted since the discovery of the concern. just need to pack the dang thing up and truck it across Texas dont ya think?:grin: :grin: :grin: Wayne Turner
I'm pretty sure that when you sleeve a motor, you have to re-bore all of the other cylinders because the heat can move things around a bit. -Bob C.
