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Old 05-28-2006, 07:27 PM
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Brass or aluminum radiator???

I'm building a model A streetrod with a 871 blown SBC. I'm getting ready to order a radiator,the companys that build brass -copper radiators recomend theirs as the best,and the ones that specialize in aluminum radiators ,say that theirs do a better job cooling.Any opinions to which is better? THANKS

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Old 05-28-2006, 07:52 PM
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Aluminum sheds heat faster than copper or brass, but copper or brass is much more durable. The upside of a copper-brass radiator is that it can be repaired by a local radiator shop. An aluminum radiator needs to be TIG welded. Your local radiator shop may not have that expertise. Another thing, the early Fords are notoriously hard on radiators due to the frame mounted brackets. Personally I would not want an aluminum radiator in such an installation.

Vince
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Old 05-28-2006, 09:04 PM
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A little clarification... copper and brass conduct heat better than aluminum does, but aluminum opens up design possibilities like wider, flatter tubing with more surface area and therefore aluminum RADIATORS typically are capable of transferring more heat from the coolant... but copper and brass are better conductors of heat than aluminum.

Aluminum radiators are usually lighter and conduct heat a touch better and often can take a little more pressure. Copper/brass is super simple to repair at the local shop, works 95% as well as aluminum for cooling purposes, and is usually really cheap. I always go with copper brass except where I want a certain look or want to run a higher pressure cap.
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