BRINGING MORE VALUE TO YOU AND YOUR CUSTOMERS

Chrysler Penstar
JASPER upgrades Chrysler 3.6L Pentastar engines with improved parts such as nitrided valves, copper-infiltrated valve seats, and JASPER designed pistons with robust rings for increased durability.
Chrysler Penstar
JASPER 100% replaces the early-style cylinder head valve seats with copper-infiltrated seats to improve heat dissipation and reduce wear.
Chrysler Penstar
JASPER provides 100% installation of a NEW engine oil cooler and includes: oil temperature sensor, oil pressure sensor, knock sensor and adapter harness.
Chrysler Penstar
JASPER Engines undergo Live-Run Testing using state-of-the-art Data Acquisition to check compression, vacuum and oil pressure with other assessments to ensure reliability.
• 100% replacement of early-style cylinder head valve seats with copper-infiltrated seats and NEW nitrided valves for improved heat dissipation and reduced wear, preventing engine misfire (dropped valve seats and valve guide wear). Valve guides are air-gauge tested to verify proper clearance between the valve and guide.

• 100% installation of NEW late-design rockers/cam followers, improving longevity of the bearing assembly and the rocker.

• Installation of JASPER-designed pins in the block, locking the cylinders together under heavy load. This prevents the cylinders from moving, which can lead to head gasket scuffing, a common cause of failure.
• 100% installation of high-strength, Class 12.9 rod bolts to prevent stretching, which can lead to rod bearing failure.

• JASPER® engineered pistons include a graphite coated skirt and 28% more major thrust bearing area to help prevent dry startup and piston scuffing.

• JASPER® engineered pistons include a smooth, fully-machined, anodized crown that provides a thermal barrier and reduces carbon buildup.

• JASPER’s Chrysler 3.6L piston design includes additional oil return holes (12 total) to increase oil drain back, to reduce oil consumption, and prevent the oil rings from sticking.

• JASPER installs a robust two-piece 2.0mm oil ring for improved oil control and uses a steel top ring which includes a PVD and DLC coating for longevity and less friction.

• An accumulator groove is machined into the piston, decreasing the pressure between the 1st and 2nd ring land, preventing the upper (compression) ring from unseating at higher RPMs.

• JASPER designed pistons have 20% more pin bearing surface area than the original design to improve stability and prevent piston slap.

• Thicker, D-shaped, PTFE (polytetrafluoroethylene) coated Multi-Layer Steel head gaskets are installed, with new head bolts, along with better block and head surface finishes (50-150 Rz), to prevent leaks and maintain the correct compression ratio.

• Block is CNC machined for 100% installation of steel-threaded inserts for head bolts, increasing strength over the original aluminum design, which pull out.

• 100% installation of NEW engine oil cooler, and for ease of installation, assembly includes: oil temperature sensor, oil pressure sensor, knock sensor, and adapter harness.

• 100% of the Chrysler 3.6L remanufactured oil pumps are tested on state-of-the-art, JASPER designed, stand-alone oil pump testing equipment. Oil pressure and flow are measured with solenoid on and off throughout a full RPM sweep of the remanufacture oil pump operating range.  

• Live-Run Testing, utilizing Data Acquisition with other assessments to ensure reliability of compression, vacuum, oil pressure, actuator testing, and blacklight leak testing.

3 Year / 100,000 Mile Nationwide
Transferable Warranty

Full warranty disclosure available at www.jasperengines.com or
upon request. Specifications subject to change without notice.
Download Chrysler Penstar PDF

Product Videos

Chrysler 3.6L Pentastar Rocker/Cam Follower Update

Chrysler 3.6L Pentastar Steel Threaded Head Bolt Inserts

Chrysler 3.6L Pentastar Piston Design

Chrysler 3.6L Pentastar Oil Pump Test

Chrysler 3.6L Pentastar Cylinder Pin Installation

Chrysler 3.6L Pentastar Torque Plate Honing

Chrysler 3.6L Pentastar Cylinder Pin Installation

Chrysler 3.6L Pentastar New Oil Cooler

Chrysler 3.6L Pentastar

Value-Added Quality Improvements from JASPER

Issue / Concern:

Rocker and Camshaft Failure

JASPER Solution:

  • 100% installation of NEW late-design rockers/cam followers, improving longevity of the bearing assembly in the rocker.

Engine Misfire (Dropped Valve Seats, and Valve Guide Wear)

  • 100% replacement of early-style cylinder head valve seats with copper infiltrated seats for improved heat dissipation and reduced wear.

  • 100% installation of NEW nitrided valves for improved heat resistance and reduced valve guide wear.

Rod Bearing Failure

  • 100% installation of high-strength, Class 12.9 rod bolts to eliminate stretching, which can lead to bearing failure.

Dry Start-Up and Piston Scuffing

  • JASPER-designed piston with graphite coating helps prevent dry start-up and piston scuffing.

  • JASPER-designed pistons include 28% more major thrust bearing area to prevent dry start-up and piston scuffing.

Oil Consumption

  • Stronger JASPER-engineered pistons have a smooth, fully-machined, anodized crown that provides a thermal barrier and reduces carbon buildup.

  • JASPER’s piston design includes additional oil return holes (12 total) for increased oil drain back, to reduce oil consumption and prevent the oil rings from sticking.

  • JASPER installs a robust, two-piece 2.0mm oil ring for improved oil control.

  • JASPER piston rings include a steel top ring that has a PVD and DLC coating for longevity and less friction.

  • Additional accumulator groove is machined into the piston to decrease the pressure between the first and second ring land, preventing the upper (compression) ring from unseating at higher RPMs.

  • 100% installation of synthetic, rubber-based PTFE (polytetrafluoroethylene) valve stem seals.

Piston Slap

  • 100% torque plate honing of engine block, utilizing a torque plate and specially-designed, ARP2000® bolts, provides cylinder wall geometry that matches the cylinder head as a complete running assembly, for improved ring sealing.
  • JASPER-designed pistons include 20% more pin bearing area for better stability.

Head Gasket Failure

  • Installation of JASPER-designed pins in the block, which lock the cylinders together under heavy load. This prevents the cylinders from moving, which can lead to head gasket scuffing, a common cause of failure.
  • Block is CNC machined for 100% installation of steel threaded inserts for head bolts, increasing strength over the original aluminum design that pull out.
  • Upgraded D-shaped head gaskets increase fire ring pressure for improved sealing under heavy use.
  • JASPER installs a thicker, PTFE (polytetrafluoroethylene) coated MLS (Multilayer steel) head gasket.
  • Block and heads are resurfaced to a 50–150 Rz finish.

Engine Oil Contamination

  • 100% installation of NEW engine oil cooler, and for ease of installation, assembly includes: oil temperature sensor, oil pressure sensor, knock sensor, and adapter harness.

Low Oil Pressure

  • 100% of the Chrysler 3.6L remanufactured oil pumps are tested on state-of-the-art, JASPER designed, stand-alone oil pump testing equipment. Oil pressure and flow are measured with solenoid on and off throughout a full RPM sweep of the remanufacture oil pump operating range.

VVT Failure

  • VVT’s are hydraulically tested using a state-of-the-art oil-controlled, test stand.

Reliability

  • 100% live-run tested to verify proper compression, vacuum, and oil pressure.
  • 100% tested intake and exhaust cam actuators to verify proper performance.
  • 100% black light leak tested to ensure the unit is leak-free.
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