A
number of things contribute to cooling efficiency, e.g.; fluid
capacity, fin design, material, etc. Zionsville Autosport's Alloy
Radiator has a core thickness of 33 mm. It is important to note
that core area takes priority over core thickness. As a general
rule, the core area in square inches should be greater than the
engine displacement plus fifty. For example, the 3.2 S52 motor is
approximately 200ci. In order for a radiator to efficiently cool
this engine, the core area should be at least 250 square inches.
The surface area of ZA's Alloy Radiator is 374 square inches.
ZA's Alloy Radiators also use a high efficiency
core similar to a stock radiator. High efficiency cores have more
fins per inch, more tubes per core and more cooling capacity. Each
row has a single, large tube. The flat side of the tube is in
direct contact with the fins which transfers heat from the tube
walls to the fins. Since the rounded ends of the tube are not in
direct contact with the fin, this portion of the tube does not aid
in secondary cooling. The more tubes per row, the more rounded
ends, and the less direct contact there is between the tubes and
the fins. ZA uses a single tube for better heat dissipation.
Cooling improvement also comes from larger
radiant surfaces on the tanks. The alloy tanks themselves have a
high level of thermal conductivity which helps to dissipate heat
into air instead of back into the engine. In addition, the tanks
on ZA's Alloy Radiator are larger than the tanks on a stock
radiator. This results in a 65% increase in coolant capacity.
Empirical data speak to the efficacy of the
Alloy Radiator. ZA's Alloy Radiator has been installed in front of
super-charged and turbo-charged engines and has performed
superbly. They are running in the hottest parts of the country -
from California, to Texas, to Florida, in both street and race
applications. ZA's Alloy Radiator also survived the twenty-five
hour enduro at Thunder Hill. According to the driver, the radiator
performed "flawlessly."
Lifetime Warranty!
Zionsville Autosport guarantees our radiators for life to the
original purchaser. Purchaser must provide proof of BMW coolant
use at first installation and once every two years thereafter.
Made in the USA with Euro Aluminum Cores.
65% Increase in Fluid Capacity
High Efficiency Fin Design
Better Heat Dissipating Materials
Repairable All Alloy Construction
Greatly Increased Life-Span
Hand Welded, No Epoxy
Impact Resistant
Aluminum Core
Accepts All Original Equipment
Improved Serviceability with Petcock
High Safety Margin
Tested at 4X Operating Pressure
