Quote Originally Posted by Maglin View Post
I was just about to say this. But the downside is that it will probably already be leaking. The end tanks are usually crimped on with a gasket between the core and end tank.

As for the fins/inch I wouldn't worry about it. The radiator is so hugh that thermal transfer issues will be very moot. You can put everything thing in your rig under one loop and still not do much to the radiator. People used to use heater cores back in the early days of W/Cing. It's funny how people are starting to go back to the automotive solutions. But they are way to big and require to much work. Don't forget you have to do soemthing about the filler neck on the radiator. You can't just use a radiator cap on it with a very large pump you are thinking about. I would imagine that internal pressures will rise above 16 PSI or 1.1 bar which will be about the highest pressure cap you will be able to find for a radiator.

And as for cars colling systerms using mixed metals and it not doing damage. That is totally wrong. It's not maintaining your car that does damage. Coolant has a lifespane and if not replaced becomes acidick and starts eating away at the aluminum components in the system. It's also a main reason for cars to develope coolant leaks. That and GM designers that can't design a V-6 that doesn't leak coolant.
Theres that and theres there are idiots like the guy my dad bought my first car from who used straight water as engine coolant.

Wound up corroding a freeze plug away. Nice $500 repair bill after owning the car for a month to replace that and the coolant pump from because of all the crud that was in the coolant.