Flanges are regularly used when fabricating custom turbocharger systems for engines. While a host of different aftermarket tuning companies manufacture flanges, all T3 and T4 flanges are manufactured to meet specific physical dimensions. Despite their similar appearance, T3 and T4 flanges differ in their physical dimensions. Fortunately, by checking the physical dimensions of a flange, you can quickly determine whether you have a T3 flange or a T4 flange.
- Skill level:
- Moderately Easy
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Things you need
- Tape measure or ruler
Measure the size of the opening in the flange using a tape measure or ruler. The opening on a T4 flange is 2.98 inches wide, while the opening on T3 flanges is 2.37 inches.
Measure the length of the flange. T4 flanges are 4.25 inches long, while T3 flanges are 4.3 inches long.
Measure the distance between the small openings on the flange. On T4 flanges, 1.95 inches separate the openings, while there is a separation of 2.75 inches on T3 flanges.
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