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Valves Spring/ Retainer Kits Rods Pistons

PLATINUM SERIES LIGHTWEIGHT PISTONS
NISSAN GT-R 3.8 VR38DETT
88.4mm STOCK STROKE
- learn more about our pistons

Manley pistons are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Offset wrist pin design is utilized for quiet start-ups. Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum horsepower. All GT-R pistons come with moly coated skirts. round wire locks, premium chrome moly wrist pins, and premium steel top ring with napier second sets from Total Seal are included with every kit at no additional charge. 9310 alloy upgraded wrist pins are available.

  • 2618 high strength material
  • Offset wrist pin for quiet start-ups
  • .180" x 2.500" wall Premium Chrome Moly pin (Standard 625 Series) included
  • .210" x 2.500" wall Premium Chrome Moly pin (Standard 634 Series) included
  • 9310 alloy .210" wall pin (Extreme Duty Series) included P/N 42546
  • Turbo Tuff/DLC .250" wall P/N 42745 and .300" wall P/N 42746 upgrades available
  • Pressure balance groove
  • Will accommodate +1mm valve sizes
  • Premium Steel 1.2mm top ring set with 1.2mm Napier second ring and 9-13lb. tension 3mm oil ring included
  • .260 Crown thickness
  • Round wire locks included

Part # Extreme Duty
Part #
95.5mm Bore
Grade Range
Rod Length Stroke
mm
Comp
Distance
Dome
Volume (cc)
Compression
Ratio
Piston Type Piston
Wt / Gms
Included
Ring Set
  88.4mm STOCK STROKE
625GR1-1* 625EGR1-1* 95.5 Grade 1 6.500" 88.4 1.350" -1.5 9.25 Flat Top 449 46956-1
625GR2-1* 625EGR2-1* 95.5 Grade 2 6.500" 88.4 1.350" -1.5 9.25 Flat Top 449 46956-1
625GR3-1* 625EGR3-1* 95.5 Grade 3 6.500" 88.4 1.350" -1.5 9.25 Flat Top 449 46956-1
634010C-6 634010CE-6 99.0 6.500" 88.4 1.350" -2 9.8 Flat Top 488 46990-6
634015C-6 634015CE-6 99.5 6.500" 88.4 1.350" -2 9.9 Flat Top 493 46996-6
* These pistons feature skirt diameters that correspond to the OEM Grade 1, 2 or 3 bores resulting in a piston to wall clearance range of .0032" - .0039". Check the bore grades on the back of your block and order the appropriate quantities of Grade 1, 2 or 3 pistons. (Sold as -1 individual pieces, not sets.)


PLATINUM SERIES LIGHTWEIGHT PISTONS
NISSAN GT-R 3.8 VR38DETT
94.4mm STROKER
- learn more about our pistons

  • 2618 high strength material
  • Offset wrist pin for quiet start-ups
  • .210" x 2.500" wall Premium Chrome Moly pin (Standard Series) included
  • 9310 alloy .210" wall pin (Extreme Duty Series) included P/N 42546
  • Turbo Tuff/DLC .250" wall P/N 42745 and .300" wall P/N 42746 upgrades available
  • Pressure balance groove
  • Will accommodate +1mm valve sizes
  • Premium Steel top ring set with Napier second ring and 9-13 lb. tension oil ring included
  • Round wire locks included

Part # Extreme Duty
Part #
Bore Size Rod
Length
Stroke
mm
Comp
Distance
Dome
Volume (cc)
Compression
Ratio
Piston
Type
Piston
Wt / Gms
Included
Ring Set
  94.4mm STROKER
633GR1-1* 633EGR1-1* 95.5 Grade 1 6.500" 94.4mm 1.232" -1.5 9.8 Flat Top 423 46956-1
633GR2-1* 633EGR2-1* 95.5 Grade 2 6.500" 94.4mm 1.232" -1.5 9.8 Flat Top 423 46956-1
633GR3-1* 633EGR3-1* 95.5 Grade 3 6.500" 94.4mm 1.232" -1.5 9.8 Flat Top 423 46956-1
635010C-6 635010CE-6 99.0 6.500" 94.4mm 1.232" -7 9.8 Dish 460 46990-6
635015C-6 635015CE-6 99.5 6.500" 94.4mm 1.232" -7 9.9 Dish 465 46996-6
* These pistons feature skirt diameters that correspond to the OEM Grade 1, 2 or 3 bores resulting in a piston to wall clearance range of .0032" - .0039". Check the bore grades on the back of your block and order the appropriate quantities of Grade 1, 2 or 3 pistons. (Sold as -1 individual pieces, not sets.)


VR38DETT - Turbo Tuff Design

  • 2618 high strength material
  • Offset wrist pin for quiet start-ups
  • .200"-.250" tapered wall .990" diam. Turbo Tuff/DLC pin included
  • Asymetrical skirt design
  • Lateral gas ports (12 places)
  • Pressure balance groove
  • Will accommodate +1mm valve sizes
  • Premium Steel top ring set with Napier second ring and 9-13 lb. tension oil ring included
  • Round wire locks included
Part # Bore Size Rod Length Stroke
mm
Displacement Comp
Distance
Dome
Volume (cc)
Compression
Ratio
Piston Type Piston
Wt / Gms
Included
Ring Set
641000CE-6* 98.0 6.500" 88.4 4.08L 1.350" -2 9.8 Flat Top TBA 46980-6
641010CE-6* 99.0 6.500" 88.4 4.12L 1.350" -2 9.9 Flat Top TBA 46990-6
* These pistons are designed for use with Manley connecting rod P/N 15444-6 that are made for a .990" wrist pin size

Common Features
Crown Thickness: .240"
Top Ring: 1.2mm, .280" down
Second Ring: 1.5mm Napier profile
Oil Ring: 3.0mm
Intake Valve Notch: .105" / 2.67mm
Round Wire Locks: P/N 42245
Pin Included: Turbo Tuff/DLC P/N 42747 ( .200"-.250" wall, 188 grams, 2.500" long, .990" dia. )
Recommended Piston Clearance: .0035" measured 1.100" from bottom of oil ring

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