Garrett's latest Dual Ball Bearing GT4094R Turbo assembly. T4 style inlet flange with 3.00" V-BAND exit. Large style compressor housing with 4.00" inlet and 2.50"outlet.  Great upgrade path (direct fit) for a GT4088R application or any new high HP application that desires the compact package. Good for up 800HP with great top end power and best spool up for the power range.

- Ball bearing CHRA
- Oil & water-cooled bearing system
- Free float, non-wastegated turbine housing
- Ideal for applications that cannot fit the GT4294R but need more flow than the GT4088R
- Outline interchangeable with GT4088R
- 4 turbine housing options

This turbo is built on the well respected T4Z frame turbo. Most people are familiar with this configuration as a "T67" or a "GT37R", both poor names that didn't really describe this turbo well at all. After all a T4Z is not a GT37, and calling out inducer diameter is sooo " 80's turbonetics" that I have to get my rubics cube out whenever I say it.
So now that you know that GT37R were really T4Z turbos, you likely have a better idea what this turbo is about. Our version ditches the "t67" compressor wheel. That wheel was a 63 trim wheel that really left LOTS on the table when it came to high boost performance, giving only a max PR of 3.4:1 even at it's highest speed line of 120krpm. The HTA easily sustains PR in excess of 4.5:1 making 45psi or more boost pressures possible, consistent and dependable.

The compressor housing is the familiar T4S cover with 4" Anti-Surge ported inlet and 2.5" outlet. The default recommended turbine housing is the .82 AR T31 style with it's compact 2.5" 4 bolt outlet, we stock the gaskets and flanges to fit this flange. Optional housings are the GT35 style with its 3" 4-bolt outlet, or the 3" vband outlet style in .82 or 1.06 A/R sizes. Also T4 flanged housing in open and divided in all standard A/R sizes, just ask!

One of the most popular of the Garrett Ballistic Concepts Turbochargers has been the GT3076R. This mid-sized roughly 52 lb/min flow rate turbo is widely used in 2.0 - 2.7 litre applications seeking a 400-500whp output level with minimal turbo lag.
The only thing that could make this turbo any better would be a better compressor wheel that delivers decreased spool time and increased max output, and we have just that, the HTA wheel aero. Scaled down to 76mm exducer and 54.8mm inducer this aero flows over 57lb/min without dropping efficiency, and works well to sustain boost pressures above 40psi is needed without compromise.

There optional turbine housings for this turbo, but the recommended default housing is the .82 A/R or .63 A/R T31 style with it's compact 2.5" diameter 4 bolt outlet. We have the corresponding gaskets and flanges for this housing if needed.