Dealers would mostly only sell standard size pistons and the only way to get oversized pistons would be to get the help of other parts outlets.
Engines nowadays seldom have wear to the block, unless oil change are seldom done or engine is subjected to abuse.
The most common cause of oil consumption would be worn/bad valve seals and replacing them should reduce oil consumption by at least 70%.
Without taking the pistons out and measuring the wear of the cylinders, it is not possible to know if reboring is required.
Most likely you would only need new valve seals and piston rings.
Thursday, July 28th, 2011 AT 5:28 PM