
Airflow performance oil cooler series#
Using real numbers, with a 10 GPM flow rate as an example (not uncommon for an engine running 6000 - 8000 RPM), the 20-row Series 9 will introduce a 5 psi pressure drop from inlet to outlet. As it turns out, the 25-row Series 6 will have about half the pressure drop of the 20-row Series 9, and the 50-row Series 1 will have roughly 1/10th the pressure drop of the Series 9! All three of these coolers have an effective cooling area right around 75 square inches, so their cooling performance is similar.īut the Series 9 will have the most flow restriction (longest rows x fewest rows), and the Series 1 will have the least restriction (shortest rows x most rows). The chart suggests at least three possibilities: Series 9 with 20 rows, Series 6 with 25 rows, or Series 1 with 50 rows. Say we have a high-performance engine putting out about 325 HP. Let's take an example from the Setrab application chart and do just a little math. Even better, adding more rows simultaneously improves flow even further. Fortunately, the last point in the list above suggests a good workaround: We can choose a shorter cooler to regain some of the lost flow, and simply add more rows to regain some of the lost cooling. Longer plates cool better (good), but at the expense of flow (bad). In the list above, the only apparent conflict we have to wrestle with is in plate length.
Airflow performance oil cooler pro#
A few general tips will help you to narrow down the available options and choose the best one for your specific installation.įor the purposes of this article, we will focus on plate-type oil-to-air coolers, such as the Setrab Pro Line. Even their application chart gives you multiple different choices for most engines.

Setrab Oil Coolers come in so many shapes and sizes, it's hard to know where to begin. Choosing the right engine oil cooler for a given application can seem like an overwhelming task.
