Thread: How to calculate radiator size?

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Originally Posted by shawnlee28

Basically on most hot ,hotrods its usually the biggest radiator you could possibly fit is usually the right size.

Absolutely right!

There is a disciplined engineering approach to designing air-oil (or water) heat exchangers. It is not as easy as a couple of equations however. Especially not for a car where the heat loads, air and water flow rates etc are not constant. If I was going to make my own I would probably go take a look at the specs on brass or aluminum ones out there and basically copy that.

Kitz

There are a lot of parts on a car I would build, but a radiator is not on that list.

Don