Timing belt broke on 1997 GST How much damage?

i can answer this question with one Word...

allot.

It really just depends... More than likely you bent most/all of the valves, and any valves that did bend will more than likely tear the valve guides up getting them out, also you more than likely will have to replace the valve stem seals. Not that big of a job, I had all of my exhaust valves burned and had to replace them in my eclipse spyder and I was able to do it all my self, and lap the valves in. The tricky part is putting the timing belt back on and bolting the engine head back on and setting the timing.

这个问题不清楚哦。汽车的发动机定时带（或称为正时带）如果断裂，确实可能导致严重损害，包括但不限于发动机内部零件的损坏。但具体损失程度会根据发动机的设计、汽车的运行状态以及断裂时发动机转速等因素有所不同。如果您遇到这种情况，建议尽快联系专业的汽车维修服务进行检查和维修。