With the amount of fuel we use, the large combustion chamber size and the valve timing, it is unlikely our particular engine would hydraulic. I guess anything is possible, though. The professional cars, have a little higher compression, 2 fuel pumps, each larger than our single pump, so it does happen with them and lots of damage results. One of the big advantages for us is having a very experienced tuner who is willing to teach us all the safety precautions many learn the hard way. An example would be you will never see spark plugs in our engine unless the engine is ready to run, period. You don't want the nitro to ever be contained in a closed chamber where it can be shocked and detonate. Even when the car is going down the road in the trailer, the spark plugs are out. Fuel left in the system could drain down into a cylinder with the valves closed, you hit a big pothole, and when you get to the track part of the cylinder head is missing. Lots of little details like this help us stay out of trouble.
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