 car that we're building basically a build car first things first see how many cores you can text me on this stuff but check the cores you know pull the cap look inside how many cores is it one two three if it's single is it super wide is it one of the thinner cores you know how thick is it actually and then the other thing i would look at wait is when it's up to temperature and the radiator caps off is it flowing in other words are you seeing water flowing through the radiator