Tag Archives: hell

Mitsubishi Engine Teardown Shows What Happens When A Piston Explodes

Boost is a hell of a drug. One minute it might have you ever on prime of the world, delivering tons of energy and torque that will help you set a private greatest lap time at your native monitor. The subsequent minute, it might have you ever on the aspect of the monitor with oil pouring from beneath your automobile. We’re betting that is precisely what occurred to whomever used this turbocharged Mitsubishi engine final.

Eric from the I Do Cars YouTube channel needed to see precisely how this Mitsubishi 4B11T, taken out of a Lancer Ralliart, met its finish. From the bounce we will see an enormous gap within the block, with numerous surrounding harm. It solely will get worse as soon as Eric digs deeper.

 

Because this engine wasn’t very high-mileage, there are surfaces that appears surprisingly clear. The timing chain space is like-new, and the cylinder head is not stained by years of outdated, unchanged oil. But after eradicating the camshafts, Eric factors out harm to the journals means these components nonetheless may not be reusable, signaling the carnage to return.

Removing the cylinder head reveals the primary downside space: Cylinder three, or what’s left of it, anyway. The piston seems to have actually exploded, with the highest portion free within the cylinder and splitting into items. The oil pan is stuffed with big items of piston, rod, bearing, and block materials. The incident was so extreme that it broke the block’s base plate into two items. This should’ve felt like a grenade exploding within the engine bay. 

Eric suspects there should’ve been an enormous quantity of enhance going into this engine when it gave out, given the pure destruction that resulted from the failure. The put on on the connecting rod bearings that survived counsel there would possibly’ve been a scarcity of oil and many excessive rpm, too. Not an incredible mixture for maintaining an engine wholesome.

Boost is a merciless mistress.