HOW PERFORMANCE RADIATORS CAN IMPROVE YOUR CAR’S POWER AND SPEED
                     HOW PERFORMANCE RADIATORS CAN IMPROVE 
YOUR CAR’S POWER AND SPEED
Paul Norman Jasper
Writer at autopartsu.com whose favorite topics 
include,  best replacement radiators and
 radiator replacement advise.
Whether you are rebuilding a classic muscle car or creating a race car able to 
blister the pavement, you know that engine temperature is key in producing 
more horsepower. If the engine block is stone-cold, fluids are thicker, and all 
the moving parts struggle to achieve the optimum operating motion. On the 
other hand, too much heat breaks down the lubricants and can even damage 
all the moving components of the engine. Finding that sweet spot of not too 
cool or too hot is the job of your radiator. Upgrading to a performance 
radiator helps your car maintain that sweet spot where your engine produces 
the most horsepower without producing too much wear and tear.
Lightweight Aluminum Construction
Older radiators were often built out of copper and brass. The best 
replacement radiators are constructed out of aluminum. The durable metal is 
flexible, durable, and much lighter than the older materials. When you are 
leaping off the line, saving a few pounds under the hood can help you 
convert horsepower into speed. If you have sufficient room under the hood, 
you can even increase the size of the radiator, drastically increasing your 
cooling power without adding weight.
More Rows–More Fins–Larger Tubes
Since aluminum can be extruded into very thin sheets, newer performance 
radiators are able to pack more fins, more rows, and larger circulating hoses 
into a similarly sized unit. More surface area provides more opportunity for 
the heat from your engine to be dissipated into the air. After hitting peak 
RPMs while screaming down the quarter-mile, your engine will be able to 
cool off faster and prepare for the next time trial without overheating. If you 
are going for endurance, the best replacement radiators work to maintain the 
proper engine temperature without sacrificing speed.
Dual-Pass Design
While hunting down your aluminum radiator with three rows and one-inch 
tubes, you should also look for a dual-pass design. The tubes enter the core 
from one side, pass to the other side, and then take a U-turn to exit at the 
bottom of the core on the same side as the entry. The engine coolant spends 
more time circulating through the core allowing the fins to grab more heat, 
returning colder fluid to the engine case.
However, if you forget about the radiator fan when shopping for the best 
replacement radiator, you could be sabotaging your upgrade. Make sure that 
the performance radiator that you select fits into the compartment while 
leaving enough room for the fan to circulate plenty of air. Take a good look at 
your grille and air intakes. A larger radiator that is blocked by sheet metal will 
end up trapping excess heat under the hood.
Before you click to buy your new performance radiator, make sure to check 
out the parts reviews. Other drivers will be sharing important information 
and experience allowing you to make the most out of your purchase while 
adding a few more horsepower at the track.
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