JE piston sets are drop-ship items; expect a 1-4 week lead time.
STRENGTHEN YOUR BUILD WITH JE PISTONS
Building a high-powered race engine for road, drag, or full-out competition racing? JE Pistons for your Audi 2.7T 30V engine offers ultimate strength and reliability in a forged piston.
LEADING PISTON FEATURES
- Ultra-high performance 6-cylinder forged piston set
- Optional bore sizing
- 9:1 compression ratio
- Includes JE Pro Seal piston rings
- Includes wrist pins and pin locks
- No dish deburring or preparation is needed
- Individually prepared inspection report of dimensional conformity
- Each piston is individually serialized for complete traceability
- 23-point post-production inspection conducted by certified personnel
- Tighter tolerances on 14 critical areas of the piston
INCLUDED IN PISTON SETS
- 6X JE forged 2.7T pistons
- 6X JE Pro Seal piston ring sets
- 6X JE straight wall carbon steel wrist pins
- 12X JE wrist pin wire locks
COMPRESSION RATIO
All IE Spec JE-forged Audi 2.7T engine piston sets are standard in a 9.0:1 compression ratio. This compression ratio is a perfect match for engine builds running high boost, high torque, or race fuels/nitrous requiring this type of forged piston. The compression ratio allows more boost and timing with less chance of cylinder detonation on proper tuning without sacrificing spool time, out of boost power, and peak power.
BORE SIZE
JE offers you a choice of bore size to suit your build. You have the option of stock (81mm) bore sizing or up to +1mm (82mm) oversized bores. Overbore pistons require additional machine work, including a cylinder bore and hone, which a machine shop must perform. We recommend overboring the engine block for most performance engine builds when installing aftermarket pistons. This additional work ensures a proper piston-to-wall clearance and, in most cases, results in stronger compression, longer piston life, increased ring life, and quieter piston operation.
PISTON MEASUREMENTS & SPECIFICATIONS
Stock bore size:
Bore: 81mm
Stroke: 86.4mm
Rod size: 154X21
Dome CC's: -3.3
+1mm bore size:
Bore: 82mm
Stroke: 86.4mm
Rod size: 154X21
Dome CC's: -4.5
MANUFACTURING DETAILS
Forged from 2618 T6 aluminum
JE manufactures this light yet strong piston from high tensile strength 2618 T6 aluminum, engineered for extreme operating environments found in professional motorsport competition. This high-performance alloy is suited for use with high compression ratios, high boost levels, and high octane usage, tolerating acceleration forces of more than 8000 Gs and directional changes exceeding 200 times a second while minimizing weight. This reliable forging is the ultra-high performance choice when building competition or very high-powered boosted engines exceeding street power levels.
Optimized dish & dome design
The piston dish and dome have been individually designed for the combustion chamber of each individual application. Special care has been taken to provide properly placed valve reliefs as needed and feature smooth-flowing radii across the surface for excellent flame travel. Designed and verified in JE's dedicated Critical Manufacturing Cell, providing reliable compression ratios and combustion characteristics.
JE Pro Seal piston rings
Every JE piston set includes a complete performance-matching JE Pro Seal Piston Rings set. JE Pro Seal rings are the result of over 60 years of experience in manufacturing racing piston technology such as NASCAR, ALMS, NHRA, and AMA. Pro Seal Ring features barrel-faced top rings made with premium ductile iron and plasma-moly inlays on the ring face, combining nickel, chrome, and other trace elements. The second ring sets are taper-faced with a reverse torsional design and finished with a phosphate coating. These high-technology designs reduce friction, lower wear, improve ring seal, and extend ring life.
World-class manufacturing and quality control
Meeting the extreme demands of today's ultra-performing race teams, JE Pistons are engineered, manufactured, and verified using a Critical Process Program unique to JE. All critical surfaces are machined in a dedicated manufacturing cell, resulting in tighter tolerances in 14 critical areas. 23-point quality inspection in an environmentally controlled lab maintained at a constant 68 degrees with 40% relative humidity. This ensures consistent and exact measurements and guarantees dimensional conformity. Each piston is serialized and tracked, so you can rest assured your piston set is ready to use right out of the box!
