What is the purpose of the A/R ratio on a turbine housing?

The A/R ratio, in this case 1.01, defines the cross-sectional area of the turbine housing relative to its radius. A higher A/R like 1.01 generally means more exhaust gas volume can flow through the housing, which can help the turbocharger spool up later but sustain higher boost levels at higher RPMs.

What is the difference between T3 and V-band connections?

A T3 connection typically uses a flanged inlet with multiple bolts, while a V-band connection uses a clamp system. The V-band is often preferred for its ease of installation, secure seal, and ability to handle thermal expansion and contraction without leaking.

Does this turbine housing come with the V-band clamp?

This product listing is for the Garrett G30 Turbine Housing Kit, part number 740902-0091. Please refer to the product details or contact customer support to confirm if the V-band clamp is included in this specific kit.

Specifications

Brand: Garrett
Part #: 740902-0091

Garrett G30 Turbine Housing Kit O/V T3 / V-Band 1.01 A/R (Standard Rotation)

Name: Garrett G30 Turbine Housing Kit O/V T3 / V-Band 1.01 A/R (Standard Rotation)
Brand: Garrett
SKU: garrett-garrett-g30-turbine-housing-kit-o-v-t3-v-band-1-01-a-r-standard-rotation-t14-427597
Price: 838.58 USD
Availability: BackOrder

$838.58

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Garrett G30 Turbine Housing Kit O/V T3 / V-Band 1.01 A/R (Standard Rotation). This housing is crucial for controlling exhaust gas flow to your turbocharger.

Key Features

Fits Garrett G30 turbochargers with standard rotation.
Features a 1.01 A/R ratio for optimized exhaust gas flow.
Constructed from a high-nickel, ductile iron alloy for high-temperature resistance.
Compatible with both T3 and V-band exhaust manifold connections.
V-band connection ensures a secure and leak-free seal.
Designed for custom turbocharger builds and performance tuning.

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About this part

Product Details

The 1.01 A/R (Area/Radius) ratio on this Garrett G30 turbine housing is a key design choice, specifically selected to manage exhaust gas flow for optimal turbocharger performance in a standard rotation setup. This housing works with T3 or V-band exhaust manifolds, offering a flexible option for custom builds. It's built from a high-nickel, ductile iron alloy that can handle the extreme temperatures and pressures found in the exhaust stream, helping to ensure durability and consistent operation under demanding conditions.

This kit includes the turbine housing itself, designed to bolt directly onto compatible Garrett G30 turbochargers. The V-band connection offers a secure and leak-free seal, simplifying installation and maintenance compared to traditional flanged setups. The standard rotation designation means it's configured for the most common turbocharger shaft orientation. This part is essential for tuning how quickly your turbo spools up and how much boost it can generate, directly impacting your engine's power output.

When building or upgrading a forced induction system, selecting the right turbine housing is critical for achieving your desired performance goals. This Garrett housing is a well-built component for enthusiasts looking to fine-tune their turbocharger's response and power delivery. Please note that this part is not CARB approved and cannot be shipped to California.