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2.4L 16v - SRT-4
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2.4L 16v - SRT-4
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Set of 4 forged 4340 steel connecting rods for Dodge Neon SRT-4 2.4L 16V Turbo (EDV).
The Chrysler EDV (2.4L 16-valve turbo) is the four-cylinder that powers the Dodge Neon SRT-4 and several Chrysler models. With 2,429 cc (87.5 mm bore, 101 mm stroke) and a turbocharger, it produced over 230 hp in SRT-4 form, built from 2003 to 2005.
With its sturdy cast-iron block and strong crankshaft, the weak point in tuning remains the rotating assembly once boost pressure climbs. Beyond stock output the standard rods reach their limit; forged 4340 steel connecting rods secure the bottom end and open the door to high-power builds.
Machined from high-strength 4340 steel, reinforced forged connecting rods strengthen the bottom end as soon as power rises. They become essential when switching to forged pistons, raising the rev limit, increasing boost pressure or gaining displacement, all cases where the original rod reaches its limits.
Designed to withstand the high stresses of tuned engines (turbocharged and supercharged alike), these forged connecting rods cover every discipline (rally, drift, drag, circuit and track days, hillclimb, time attack) and support Stage 2, Stage 3 and Stage 4+ builds, up to full competition engines.
| Reference | Brand | Profile | Bolts | Pin diameter OEM 22 mm | Small-end width | Big-end diameter OEM 53.0 mm | Big-end width | Center-to-center OEM 151 mm | Weight per rod |
|---|---|---|---|---|---|---|---|---|---|
| 14010-4 | Manley | H | ARP 2000-3/8"-38mm | 22 mm | 53.0 mm | 25.8 mm | 151 mm | 595 g | |
| 14420-4 | Manley | I-HD | ARP 2000-3/8"-41mm | 22 mm | 53.0 mm | 25.8 mm | 151 mm | 695 g |
| Rod | Bolts | Torque | Recommended stretch |
|---|---|---|---|
| Manley (14010-4) | ARP 2000 | 81.3 N·m | 0.147 – 0.157 mm |
| Manley (14420-4) | ARP 2000 | 81.3 N·m | 0.147 – 0.157 mm |
Manufacturers recommend the stretch-gauge method as the reference: the instructions supplied with the kit always take precedence. The torque figures correspond to assembly with ARP lubricant.
| 4340 steel is a nickel-chromium-molybdenum alloy steel used in aerospace and motorsport alike. Forged then heat-treated (quench and temper), it offers excellent tensile strength, high fatigue resistance and real ductility. Compared with an original rod (often sintered/powder metal, optimised for series-production cost), a 4340 forged rod shows roughly +19% higher yield strength, +8% higher tensile strength and above all +19% to +37% higher fatigue strength, i.e. a fatigue life under cyclic loading several times longer. This is what makes forged 4340 the reference material as soon as boost and rpm climb. |
 | I-HD profile (Pro Series Turbo Tuff). Manley's reinforced version of the I-beam: a robust section, larger-diameter bolts and generous material to handle very high boost pressures while keeping weight in check. |
 | H-Beam profile. The H-beam rod, two flat faces joined by a central web, offers maximum bending rigidity and excellent resistance to high loads. It is the reference profile for heavily stressed turbo engines. |
The rod bolt is one of the most heavily stressed parts in the engine. The key is to match the ARP grade to the real use of the build, then to strictly follow the assembly torque and stretch.
 | ARP 2000 (tensile strength ~220,000 psi, i.e. ~1,517 MPa) is the high-performance standard. Suited to builds up to 150 hp per cylinder with 5/16" bolts or 200 hp per cylinder with 3/8" bolts, and up to 8,500 rpm, it is the most common grade in circuit, track days, drift, rally, drag and hillclimb, recognised for its strength, reliability and versatility, with no particular storage constraints. |
In addition to torque tightening, measuring rod-bolt stretch is the most reliable check for optimal preload. The check is done with the bolt fitted: place the gauge (dial indicator) on the two ends of the bolt and read its actual stretch, which must match the recommended value (see the torque & stretch table above). This method removes the friction variations inherent in torque tightening and secures the assembly on heavily stressed engines. |
 | Manley Performance, a leading US manufacturer of high-performance forged connecting rods. For this engine the range includes the H-Beam and the I-HD (Pro Series Turbo Tuff) profiles, both with ARP 2000 bolts, for the most demanding turbo builds. |
 | 1) Small end 2) Small-end diameter 3) Rod beam 4) Rod bolt 5) Big end 6) Rod nut / bolt 7) Rod cap 8) Big-end diameter 9) Center-to-center |
These forged connecting rods are compatible with vehicles fitted with the Chrysler / Dodge EDV engine (2.4L 16V Turbo):
| Brand | Model (chassis) | Engine code | Power | Years |
|---|---|---|---|---|
| Dodge | Neon SRT-4 (EDV) | EDV | 218–234 hp | 2003–2005 |
| Chrysler | PT Cruiser GT / Turbo (PT_) | EDV | 223–234 hp | 2003–2010 |
| Chrysler | Sebring 2.4 Turbo (JR) | EDV | 223 hp | 2001–2007 |
| Chrysler | Cirrus 2.4 Turbo | EDV | 218 hp | 2001–2006 |
| Dodge | Stratus 2.4 Turbo (II) | EDV | 223 hp | 2001–2006 |
OEM reference:
When an original bottom end fails (broken, bent or scored rod), going back to the factory configuration means replacing the rods and the pistons, often damaged at the same time. The bill climbs quickly, for a simple restoration to stock.
For an equivalent budget, or even less, fitting 4340 forged connecting rods paired with forged pistons brings far greater reliability and safety margin, plus real potential for power increase. It’s the solution chosen by European engine builders for over 15 years.
For the same budget: more reliability, more potential, more longevity.
