My engine in my first FB was invincible. LOL. We turned it into a pure drag car after I bought my second one and tried to blow it up. We couldn't. We ended up putting that engine into my second FB after it went. We did everything from wedging a brick onto the gas pedal at WOT and leaving it for like 15 minutes, to sprayng like a 150 shot at the drag strip at 10,000 rpm. Fucker wouldn't pop the seals.