I need to find some more lakes that don't have any horsepower limits... I just bought my first boat (16' tri hull with an 85hp mercury) but until I can afford a smaller motor like a 15hp, I would like to find some new lakes to fish on, other than shenango I don't think I know of any lakes around here without limits... I'm from grove city and I'm hoping to find lakes within about 45 min

Conneaut Lake is unlimited HP!

Edinboro lake is also unlimited hp. May be less crowded that conneaut.

Fish the rivers. Unlimited HP, less crowded, more fish.

I think Crooked Creek is unlimited but might be pushing an hour for you.
 
If you have electric trolling motors, you can launch and putz around in Pymy or Wilhelm and get on decent fishing close to the launch.  Just have an extra battery with you.

Stoneboro/Sandy small but close.
 
crappy

Clarion River below Mill Creek...