tolikmelnikov

Let me ask you a question. The engine is eating oil. 110k mi. I have a 2012 Chevrolet Equinox 2.4 with a LEA engine. Can I replace the liners on it, or the casting block and need to bore the cylinder block?

Gumby22

If you really want to rebuild it, I’d recommend just taking the block and heads to a reputable machine shop for inspection and repair as necessary. A good machine shop will advise you on the best repair for the condition of the block.

tolikmelnikov

Thank! But I do not live in the USA and I need to order parts a month in advance, so I want to know what type of block in my engine - with removable liners or not.

Gumby22

The LEA is an aluminum block with cast iron cylinder sleeves. There is a machining tolerance of .25 mm if they need to be bored and a matching set of oversized piston rings are available if boring is done.

Even in replacing the sleeves, machine work will have to be done. The sleeves are made to be a few thousandths longer than the block, so after installation, the block still has to be machined to flatten it out or the head and gasket won’t seal correctly.

Worn piston rings and glazing on the cylinder walls are the most common causes of oil consumption on these engines. I can appreciate the need to plan ahead but both of these conditions can be corrected without replacing the sleeves. If the engine is otherwise running fine (no hard misfires due to mechanical failure or bearing noise) it’s unlikely the sleeves will need replacement.