FAQs

Q1.: How to convert turbine housing size from CM to AR?

A: Hey guys, well we have been looking at turbos and some are listed with .AR sizes instead of CM2 sizes so thought we would post up this conversion equation I came across. 

((CM x 8) - 7) / 100 = a/r ratio

some conversions below.

6 cm2 = 0.41 A/R
7 cm2 = 0.49 A/R
8 cm2 = 0.57 A/R
9 cm2 = 0.65 A/R
10 cm2 = 0.73 A/R
11 cm2 = 0.81 A/R
12 cm2 = 0.89 A/R
14 cm2 = 1.05 A/R
16 cm2 = 1.21 A/R
18 cm2 = 1.37 A/R
21 cm2 = 1.61 A/R