redhead 10 #1 Posted October 14, 2012 I am in process of installing new piston rings, and the question I have is this---will it be ok to install new standard piston, and rings with the cylinder bore app..008-.010 thousands under the lower size of cylinder bore. Would app. an answer, never done this type of work on engine before.THANKS Share this post Link to post Share on other sites
sorekiwi 761 #2 Posted October 14, 2012 Welcome to Red Square. You havent told us what engine you are working on, and I assume you mean your bore is worn .008-.010" oversize? If you are unfamiliar with doing engine work (or even if you are familiar with it) you need to read the manual. Kohler Tecumseh and Onan manuals are available for download on this site. The manual will give you max tolerances for the bore. Numbers for max wear, out of round and taper. If you have .008 to .010" of wear, a new piston and rings will not help you. You need to get the block bored out to suit an oversize piston and rings. It will probably cost you around $50. Share this post Link to post Share on other sites
SousaKerry 503 #3 Posted October 18, 2012 UMMMM yeah what he said. Get the specs of the engine and match it up otherwise you are in for a much bigger problem... No offense but if you are asking that question I would find someone to help you who has done it before. Share this post Link to post Share on other sites
