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A Turn Ahead Of The Competition G Series Performance Turbochargers

12/10/18

Garrett® G Series 42 turbochargers offer enthusiasts a new range of quick spooling, high horsepower solutions for 2.0 liter up to 8.0 liter engine platforms. The G42-1200 Compact, G42-1200, and G42-1450 turbochargers produce up to 1450 horsepower thanks to the ten blade, forged, fully-machined G Series compressor wheel with high flowing aero. These low inertia compressor wheels are smaller in size and weight resulting faster boost response. (compared to GTX42) Garrett® G42-1200 is available in standard V-band, and compact compressor housing options. The V-band compressor housing is outline interchangeable with GTX42 while the new Compact option is 4mm shorter axially and 29mm smaller radially (FigA). The G Series turbine wheel features all new aerodynamics to improve flow and boost response. New turbine aero wheel flows 10% more and has peak efficiency of 77% (Compared to GTX42 at 74% with 1.01A/R). Engineered with inconel super alloy to withstand operating temperatures up to 950C. Stainless steel turbine housings are available with V-band inlet and outlet connections in free float mono-scroll options. Divided, free float, T4 turbine housings will be available in 2019.

G Series Naming
  • To differentiate a new generation of turbochargers.
  • Frame size is our most common identifier (GT30 | GT35 ect)
  • Identify max power capability.
  • Garrett® to be used before all turbo models (Garrett®G42-1200| Garrett® G42-1450)
  • IP- model names and numbers are hard to protect.
  • TM protects brands | ® protects the appearance, not the function
  •  

 

  • Internally nothing changes in 3D drive or to part numbers. Naming is an external facing change.

  • -  9 assembly kit part numbers
  •  3 V-band turbine A/R
  •  1.01 | 1.15 | 1.28
  • Non-wastegated / free float
  •  Monoscroll / Open Volute
  • Standard rotation only

 

 T4 Divided turbine housing options coming Q1 2019.
 
 
 
 

 

G42-1200 Compact

  • - G Series compressor aero (10 blade)
  • 109 Lbs/Min compressor flow
  • 0.90 A/R comp housing
  • Hose connection comp outlet
  •  Water fittings included (-6an fittings *same as G25)
  • Stainless steel turbine housings rated up to 950 deg C
  • Compact design is 4mm smaller axially than the G42 standard 
 

 

Garrett G42-1200

- G Series compressor aero (10 blade)
- 109 Lbs/Min compressor flow
- 0.85 A/R comp housing
- V-band comp outlet 4.2 inch / 107mm (Same as GTX42 5 inch / 127mm compressor inlet (Same as GTX42)
- Water fittings included (-6an fittings *same as G25)
- Stainless steel turbine housings rated up to 950 deg C
 
 

 

Garrett G42-1450

- G Series compressor aero (10 blade)
- 131 Lbs/Min compressor flow
- 0.85 A/R comp housing
- V-band comp outlet 4.2 inch / 107mm (Same as GTX425 inch / 127mm compressor inlet (Same as GTX42)
- Water fittings included (-6an fittings *same as G25)
- Stainless steel turbine housings rated up to 950 deg C
 
 

Product Range


 

Technology and Features Compressor Aero

 
- CFD (computational fluid dynamics) engineered compressor wheel
- Optimized blade contour with 10 blade count
- Forged and fully-machined compressor wheel
- More power and faster boost response
- Smaller wheel = lower inertia
 

 


 

Technology and Features Compressor Housing 

 
Garrett® G42-1200 available with compact housing and standard housing
Garrett® G42-1450 available only with standard housing
 
- (A) Fully machined ported shroud to help reduce compressor surge.
- (B) A fully machined speed sensor port provides racers the option to add a speed sensor. Comparing shaft speed and boost levels on a compressor map will help determine ideal operating conditions to ensure peak power over a wider operating range.  
- (C ) The fully machined pressure port.  Sold separately, the Garrett ® G Series speed sensor kits have new part numbers and are not compatible with GT/GTX kits. Easier to install and will not need to be adjusted for length like previous sensors. Simply remove bolt that secures the plug, insert the speed sensor and re-tighten the bolt. 
 
 
 
Speed Sensor Kits
G Series Street Kit: 781328-0003 (includes speed sensor, wire harness, gauge)
G Series Pro Kit: 781328-0004 (includes speed sensor, wire harness)
 

 

Technology and Features Center Housing

- Aluminum backplate for reduced weight (GTX42 Steel)
- Includes (2) -6AN water fittings
- Center housing to turbine housing Vband connection makes installation 
easy for installers. (Same Vband as GTX42 / GTX45)
- GTX and GT turbine housings are not interchangeable
- Full 360 degree orientation of compressor housing and non wastegated
turbine housings
- An o-ring between the compressor housing and backplate reduces any 
boost pressure leakage
 
 

 

Technology and Features Rotating Group

- Twin piston rings on both sides of the shaft reduce the likeliness
of oil leakage from the center housing to the compressor or
turbine stage. 
- A new oil deflector redirects oil away from the compressor stage
seals reducing possibility of oil leakage through the seals.
- 10mm ceramic dual ball bearing cartridge (Same as GTX42)
 
 

Technology and Features G42 Turbine Aero

- The turbine wheel features all new aerodynamics to improve flow and boost
response. 
- Inconel super alloy construction for temperatures up to 950C
- New turbine wheel flows 10% more and has peak efficiency of 77% (Compared 
to GTX42 at 74% with 1.01A/R)
- 82mm inducer / 75mm exducer 84 Trim
 

 


 

Technology and Features G42 Turbine Housings
 
- G42 turbine housings are made from stainless steel to provide ultimate durability and
temperature capability up 950 deg C degrees | 1742 deg F
- B&C qualified
- GTX and GT housings not interchangeable.
- Turbine housings are available in V-band, open, free float configurations for launch
- V-band inlet is 3.6 inch / 92mm ( compared to GTX30/35 3 inch / 76mm
- V-band outlet is 4.3 inch / 109mm
 
• T4 Divided turbine housing options coming Q1 2019.

G42-1200 /1200C          
Turbo Assy Kit Description Model SC P/N A/R T.Hsg kit
879779-5001S Turbo Assembly Kit, O/V V-Band / V-Band 1.01 A/R, Compact CHS G42-1200c 860778-5002S 1,01 757707-0011
879779-5002S Turbo Assembly Kit, O/V V-Band / V-Band 1.15 A/R, Compact CHS G42-1200c 860778-5002S 1,15 757707-0012
879779-5003S Turbo Assembly Kit, O/V V-Band / V-Band 1.28 A/R, Compact CHS G42-1200c 860778-5002S 1,28 757707-0013
879779-5004S Turbo Assembly Kit, Div T4 / V-Band 1.01 A/R, Compact CHS G42-1200c 860778-5002S 1,01 757707-0014
879779-5005S Turbo Assembly Kit, Div T4 / V-Band 1.15 A/R, Compact CHS G42-1200c 860778-5002S 1,15 757707-0015
879779-5006S Turbo Assembly Kit, Div T4 / V-Band 1.28 A/R, Compact CHS G42-1200c 860778-5002S 1,28 757707-0016
879779-5007S Turbo Assembly Kit, O/V V-Band / V-Band 1.01 A/R G42-1200 860778-5004S 1,01 757707-0011
879779-5008S Turbo Assembly Kit, O/V V-Band / V-Band 1.15 A/R G42-1200 860778-5004S 1,15 757707-0012
879779-5009S Turbo Assembly Kit, O/V V-Band / V-Band 1.28 A/R G42-1200 860778-5004S 1,28 757707-0013
879779-5010S Turbo Assembly Kit, Div T4 / V-Band 1.01 A/R G42-1200 860778-5004S 1,01 757707-0014
879779-5011S Turbo Assembly Kit, Div T4 / V-Band 1.15 A/R G42-1200 860778-5004S 1,15 757707-0015
879779-5012S Turbo Assembly Kit, Div T4 / V-Band 1.28 A/R G42-1200 860778-5004S 1,28 757707-0016

 

G42-1450          
Turbo Assy Kit Description Model SC P/N A/R TH P/N
879779-5013S Turbo Assembly Kit, O/V V-Band / V-Band 1.01 A/R G42-1450 860778-5006S 1,01 757707-0011
879779-5014S Turbo Assembly Kit, O/V V-Band / V-Band 1.15 A/R G42-1450 860778-5006S 1,15 757707-0012
879779-5015S Turbo Assembly Kit, O/V V-Band / V-Band 1.28 A/R G42-1450 860778-5006S 1,28 757707-0013
879779-5016S Turbo Assembly Kit, Div T4 / V-Band 1.01 A/R G42-1450 860778-5006S 1,01 757707-0014
879779-5017S Turbo Assembly Kit, Div T4 / V-Band 1.15 A/R G42-1450 860778-5006S 1,15 757707-0015
879779-5018S Turbo Assembly Kit, Div T4 / V-Band 1.28 A/R G42-1450 860778-5006S 1,28 757707-0016

 

G 42 SC & TH KIT      
Component  Description Model Requirements
860778-5002S Supercore G Series 42-1200 Compact CHS G42-1200c MOQ
860778-5004S Supercore G Series 42-1200 G42-1200 MOQ
860778-5006S Supercore G Series 42-1450 G42-1450 MOQ
757707-0011 TH Kit, O/V V-Band / V-Band 1.01 A/R  G42  
757707-0012 TH Kit, O/V V-Band / V-Band 1.15 A/R G42  
757707-0013 TH Kit, O/V V-Band / V-Band 1.28 A/R G42  
757707-0014 TH Kit, Div T4 / V-Band 1.01 A/R G42  
757707-0015 TH Kit, Div T4 / V-Band 1.15 A/R G42  
757707-0016 TH Kit, Div T4 / V-Band 1.28 A/R G42  

 

 

 

 

 

 

 

 
 
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