How To Choose An I/C


The saying here is "if you can draw it, we can build it". Spearco offers complete custom intercooler applications. No matter if you are building a 800 cid big block monster or a 2.0L, we have the capabilities to match the perfect intercooler for your needs. Using Spearco's extensive intercooler core inventory and the talents of our fabricators, Spearco can find the unit that is perfect for your application.


Conventional intercooler cores are thin-walled, extruded aluminum tubes that are not designed to handle extreme boost pressures and limit cooling performance because of their narrow width. W.A.V.E. Technology Cores utilize the latest design advances in strength and durability and
maximize cooling effectiveness through a greater surface area. Wider is better!


Turbonetics, Inc., home of Spearco Intercoolers, is proud to offer a new online intercooler section, which is completely revised and provides more application information than ever before. The Spearco section has been enlarged and includes a greater selection of dimensional drawings and other data with regard to air/air and air/liquid intercoolers in drag racing applications. In addition to the various cast-aluminum manifolds which are used on a variety of cores by cutting their length to match the core, Spearco can also fabricate special manifolds from aluminum sheet and channel for special applications to fit all intercooler installation requirements. Spearco can fabricate to customer specifications or sketches and also offers complete engineering assistance for intercooler design and application. In addition to the standard cores as listed herein, Spearco can manufacture special size bar and plate style cores in thicknesses of 1.25", 2.0", 2.25", 3.0", 3.5", 4.0", 4.5", and 6.0". Contact one of our sales representatives for any special size requirements. For custom fabrication, fax your specs on the Custom Intercooler Specification Fax Form.


Using any of the extensive line of air/air intercooler cores. Spearco can custom fabricate end tanks or intercooler manifolds in an endless number of configurations to fit individual specifications. Manifolds can be straight or tapered with tube sizes of 1.75", 2.0", 2.25", 2.50", 2.75", 3.0", and 4.0". In addition, the cast manifolds shown online can be modified by sawing off connections, capping, hole sawing, or welding in hose connections as required. Call today to custom build an intercooler that is right for you.


Air to Air Intercoolers:


Spearco offers basic air/liquid intercooler cores that can be combined in a large variety of ways to suit intercooler needs on Roots or Centrifugal superchargers and turbochargers. Refer to the detailed drawings. Air/liquid intercoolers operate by pumping cooled water through the cores either from a front-mounted radiator or heat exchanger, or chilled water produced by circulating the liquid through a container filled with ice, as used in drag racing. Depending on engine size and heat load, we recommend a container that will hold a minimum of 12 pounds of ice. If a front
radiator is used, this should be as large as possible since the temperature of the liquid entering the intercooler determines the
cooling effectiveness. We recommend a radiator as used on small automobiles with a minimum surface area of at least 260
sq. inches. Radiator technology is preferable rather than oil cooler technology, as these are specifically designed to cool water/glycol. When these intercoolers are used with chilled water, it is possible in some cases, to get charge temperatures below ambient temperature. Therefore, remarkable increases in air density and power are possible.


Drag Racing With Air to Liquid Intercoolers:


There are diverse opinions about the advantage of air/liquid intercoolers versus air/air intercoolers in drag racing applications. Some say there is no
advantage over air/air and they also say if there is an advantage it is offset by the added weight. The real facts are that other than a small additional weight factor, a proper application of an air/liquid intercooler will increase power more than enough to offset any additional weight, and will always yield superior performance over an air/air unit. Furthermore, the additional weight is sometimes needed for ballast, eliminating this disadvantage. To understand why air/liquid intercoolers are superior for drag racing, consider that the cooling medium in an air/air intercooler is the ambient temperature of the outside air at any given time. If we have an engine running at 30 psi of boost pressure, with an ambient temperature of 90ºF, depending on compressor efficiency, the
discharge temperature will be approximately 400ºF. Assume that you have an air/air intercooler that can give 90% effectiveness
at over 100mph and less at lower vehicle speeds. 90% at the above condition will give a temperature out of the intercooler of approximately 120ºF, and
higher temperature out at lower speeds due to lower cooling and velocity across the surface of the core. Additionally, you are leaving the line with a hot
intercooler caused by heating during burn out.


Please donwload the Spearco Intercooler Spec sheet and Intercooler Drawing Template below to allow our sales team to best help select and configure the proper intercooler for you.


SpearcoIC_specform.pdf70.19 KB
SpearcoIC_template.pdf25.55 KB