What does AR mean in turbo?
A/R stands for Area over Radius. It is defined as the inlet (or, for compressor housings, the discharge) cross-sectional area divided by the radius from the turbo centerline to the centroid of that area. Huh?
How much HP can a T3 turbo make?
Generally speaking T3 class turbos can deliver enough air volume for applications in the 200 to 300HP range. The bigger T4 turbo has a larger turbine on the exhaust side and larger turbine fins in intake compressor side.
What does t3t4 mean turbo?
The T3/4 is a common hybrid turbocharger for custom, high-performance applications. There are different turbine/compressor wheel and bearing options available, but the one thing they have in common is the use of a Garrett T3 exhaust housing, and a larger T4/T04 compressor housing.
Is higher a r better?
The larger the AR number, the larger the housing is. Larger housings support higher horsepower levels, but take more exhaust gasses to turn the wheel and make boost. Smaller housings spool up faster, but become a restriction and generate back pressure for the engine because the exhaust gas has no where to go.
What does T4 mean turbo?
On the other hand, the T4 turbo has a larger turbine on the exhaust side and larger turbine fins on the intake compressor side. This means that T4 can generate more air at full boost to achieve more horsepower than T3. Generally speaking, T4 turbos are usually for larger motors and use a different exhaust flange.
What size turbo is T3?
T3, T25/T28, T4 and T6 are all very familiar names in the turbo industry. The dimensions of the turbo blankets are based on 2 simple measurements….Which size do you need?
| Turbo | Circumference | Width |
|---|---|---|
| T3 | 38 ~ 41cm | 5 cm |
| T25 / T28 | 38 ~ 41cm | 6 cm |
| T4 | 51 ~ 56cm | 7 cm |
| T6 | 66 cm | 9,5 cm |