JASPER UPDATES
  • JASPER-engineered pistons include a smooth, fully-machined, anodized top land and crown, providing a thermal barrier and reducing carbon buildup.

  • JASPER’s piston design includes additional oil return holes (12 total) to increase oil drain back by 300%, reducing oil consumption and preventing the oil rings from sticking.

  • JASPER installs a high tension oil ring, versus the OEM’s low tension design. This reduces oil consumption and prevents the oil rings
    from sticking.

Torque Plate Honing

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

JASPER-designed pistons have a wider graphite-coated skirt than OE to help prevent dry startup and piston scuffing.

JASPER uses a steel top ring that includes a PVD coating for longevity and less friction.

100% installation of high-grade synthetic, rubber-based FKM (fluoroelastomer) valve stem seals to help prevent oil consumption.

100% installation of upgraded Stellite faced exhaust valves for increased heat resistance and protection against micro-welding.

Crankshaft Journal Ra Finish

100% torque plate honing, utilizing a torque plate and ARP2000® bolts, provides cylinder wall geometry that matches the cylinder head as a complete running assembly, for improved ring sealing.
(See picture above.)

Valve guides are air gauge tested to verify proper clearance between the valve and guide.

Thicker, fluoroelastomer polymer-coated Multi-Layer Steel head gaskets are installed on the GDI application, with new head bolts, along with better block and head surface finishes (50-150 Rz), to prevent leaks and maintain the correct compression ratio.

An improved piston skirt profile provides greater stability in the cylinder bore for less wear and better ring sealing.

Crankshaft Journal Ra Finish

100% Live-Run Tested, utilizing Data Acquisition with other assessments for your assurance of reliability. These tests include compression, vacuum, oil pressure, actuator, reluctor testing, and blacklight leak testing.
(See picture above.)

JASPER designed piston is destroyed to prevent
detonation.

100% installation of NEW timing chains and tensioners for longevity.

Crankshafts are machined
and micro-polished to exact tolerances for improved bearing oil clearance and reduced wear.

VVTs are hydraulically tested using a state-of-the-art, oil-controlled, test stand.

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 GM 2.4L Ecotec Engine PDF
Image

Product Videos

GM 2.4L Ecotec Piston Design

GM 2.4L EcotecTiming Chain

GM 2.4L OHC Ecotec

Value-Added Quality Improvements from JASPER

Issue / Concern:

Oil Consumption

JASPER Solution:

  • Anodized top land and crown provides a thermal barrier and reduces carbon build-up.
  • JASPER-designed piston increases oil return by 300%.
  • JASPER installs a robust, two-piece 2.0mm oil ring for improved oil control
  • JASPER uses a steel top ring that includes a PVD 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.
Dry Start-Up and Piston Scuffing
  • JASPER-designed piston with graphite coating helps prevent dry start-up and piston scuffing.

Valve Guide Wear
  • 100% installation of upgraded Stellite faced exhaust valves for increased heat resistance and protection against micro-welding.
  • Valve guides are air gauge tested to verify proper clearance between valve and guide.
Cylinder Bore Wear/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.
Head Gasket Failure and Leaks
  • Multi-layer steel (MLS) head gasket installed to reduce head gasket failure.
  • 100% installation of NEW head bolts to ensure even clamp load.
  • Block and head resurfaced to 50-150 RZ.
  • JASPER designed piston is destroked to prevent detonation.
Timing Components
  • 100% installation of NEW timing chains and tensioners for longevity.
Low Oil Pressure / Knocking
  • Micro-polished cranks are machined to exact tolerances for improved bearing clearance.

VVT Failure
  • VVTs 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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