Rebuilding a 1987 175. Bored .040 over. Rejetting carbs necessary? If so, any idea how much? Thanks.
J jimmyebay Petty Officer 3rd Class Joined Jul 26, 2009 Messages 83 Mar 22, 2015 #1 Rebuilding a 1987 175. Bored .040 over. Rejetting carbs necessary? If so, any idea how much? Thanks.
E emdsapmgr Supreme Mariner Joined Dec 9, 2005 Messages 11,551 Mar 22, 2015 #2 The factory says rejetting is not needed when boring up to .030 over. Since you are .040 over, you might want to go up one jet size on the mains. From a .061 to .062
The factory says rejetting is not needed when boring up to .030 over. Since you are .040 over, you might want to go up one jet size on the mains. From a .061 to .062
