engine locked up? help!!
ok so i bought this car from a friend the car ran fine before but its a sohc and well the valve seat broke and messed the motor up i bought another motor from a guy swapped it in and it was turning before i got it i the car but now wont turn i have pulled off the spark plugs tried to turn it over nothing. tried to turn it from the crankshaft nothing im extremly confused and dont know what to do not to mention frustrated i have pulled and changed a bunch of motors trannsmissions and all types of things.. pleas help!!