Disaster. A bolt has ruined my engine, a simple tiny thing has got into one of my valves and wrecked unbelievable damage. Pistons scored, Valves and seals damaged, block damaged, broke my cambelt which caused damage to my heads aswell. Huge damage. Rebuild cost £3500. Where did the bolt come from, well a certain company in dartford forgot to tighten up the bolts on my exhaust manifold. Absolute nightmare. Rant over.