3.1 tming chain
There are alignment marks on the timing set,and before you remove the old timing set,you must get cylinder number 1 in the firing order to Top Dead Center....then you can remove the old,and reinstall the new,timing set,but pay careful attention to the marks on each gear,in relationship to each other and where they line up.The new timing gear and chain set should have directions on where they are to line up,if not,you need to buy a Chilton manual for your specific car,as i don't have the specific information for your 3.1 engine.It sounds like your timing is WAY off,and when rotating the crank,a piston is hitting a valve...that means it's WAY out of phase...do not start the engine until resolved.The camshaft actuates the valves in relation to the crank and pistons' position,and when the valves open or close is VERY important for the engine to run properly,this is what i'm talking about (phased in) correctly.
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