thanks for all the help everybody gave me on changing my broken timing belt, everything went great, the only thing now is that while sea testing (freshwater only) my boat goes about 2 - 3 mph faster and the rpms went past the 5000 redline up to 5200 at wot. my main question is if the belt was off by one mark would the timing be advanced, would the engine run normal if the timing was off a one notch? the engine is a 1993 volvo 230 4 cylinder. thanks for any help.