Quote:
Originally Posted by funola
Are the valve face perpendicular to the piston top, which makes them less prone to bending? What broke the camshaft/ towers? What took the brunt of the impact? I've heard in VW diesels, when the timing belt breaks, valves do not usually bend and the engine can usually be put back together and run for a while till the weakened valve drops and destroys the engine. Have you heard of that happening in MB's?
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The valves on the 61X engines are perpendicular to the piston tops. The pistons are very strong, and obviously can handle a valve or two slamming into them. The leverage on the cam followers from the valves is enough to break the camshaft, but not enough to bend a valve before the cam breaks. This one, the cam, towers, vac pump, and chain broke, whereas the first one I did (1981 300SD), just the cam broke. I put a new chain in just for peace of mind, as well as a cam and vac pump. This one was definitely the most damaged one I have seen...... Rich