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The Chrysler 2.0 liter engine was an initial used in the Neon; it was likewise used in the fiddle PT Cruiser, Plymouth Breeze, and also Dodge Stratus.Its family tree can it is in traced ago to the slant six, one engine well-known for the durability. The slant six and also 2.2 liter "trans four" engines shared many typical engineers and some architecture features.The single-cam 2.0 provided rise come the DOHC engine provided in the Neon, Avenger/Sebring, Mitsubishi Eclipse, and Eagle Talon tiny cars. The was likewise seriously taken into consideration by BMW for the 3-series (reportedly, dropped because American BMW owners objected). The 2.0 was the basis for the 1.8, the minivan-PT 2.4, and the 1.4/1.6 supplied in the first-generation BMW Mini. The final use that the engine family members was in 2010, in the last PT Cruisers are made.For development and design notes, view our Neon powertrain breakthrough pageDesigned and also built by Chrysler, the 2.0 liter engine hit the soil running, through a well-balanced 132 horsepower and 129 lb-ft of torque - at a time when mostof that rivals failed to beat 100 horsepower. Even the public EX, with125 horsepower (but 100 lb-ft the torque), couldn"t come close to the Neon engine"s torque. Gas mileage was good, offered the power and weight of thevehicles that was offered in - other than the 2000-2003 Neon,due to unfavorable equipment ratios.See the Neon repairs because that repair tips, and the Neon performance section for power tips.
The Mopar 2.0 blocks
The 1.8 liter fiddle engine was based upon the 2.0; it was a smaller sized bore, through the very same rods and also crank together the 2.0, yet different pistons. The block line would change over the tooling for the smaller sized bore and also run a couple of thousand every month, however you had actually to make sure there to be no 1.8 blocks in the system afterwards - if you tried to bore out a 1.8 liter, rough-bored block come the 2.0 liter boring size, the tooling wouldn"t take it. It happened a few times.
The Neon had actually the same 96 mm cylinder centers and the exact same bore together the 2.2 engine, through a much shorter stroke to give it 2.0 liters of displacement, for this reason it can share some tooling through the old 2.2. The engine had a shallow skirt to conserve weight, v a actors iron bedplate replacing separate bearing caps, adding stiffness. The burning chamber had a pentroof setup.Common repairs: head gaskets, coils, and engine mounts
For the 1995-97 models, the Neon head gasket typically lasted about 60,000 miles. Many buyers who called Chrysler acquired a brand-new headgasket for $100 or less. The brand-new three-layer head gasket design was far superior, and one engineer said it to be close to the originally specified design which did no make it into production. Symptom of a poor head gasket room oil in theantifreeze, oil top top the engine, or antifreeze in the oil. (Aleaking valve covering gasket can additionally spill oil ~ above the engine, thoughthis is much less common). The revised (MLS) head gasket wasreportedly put right into late 1997 and also all newer models, eliminating the problem."Wheatking" composed that the head bolt top top the back outside ofcylinder #4 deserve to bottom out on some blocks, so the doesn"t exertenough push on the headgasket to make a an excellent seal; he asserted that grind a fewthreads turn off the bolt does the cheat if it"s leaking a little. "The newMLS gasket is thicker than the old gaskets, one reason why itworks better."The front and rear engine mounts have tendency to wear the end onmanual-transmission Neons, v a expectation of roughly 100,000 miles on average,much less when racing. This are easy to replace or repair.Some imply adding home window urethane come stiffen up the prior mount,which is much more appropriate for racing than everyday drivers however may behandy for enthusiasm (the stiffer the mount, the smoother the shiftsbut the much more engine vibration is transmitted into the cabin). Manypeople introduce Mopar performance replacement mounts.Early coils tended to fail early, causing a loping idleand misfiring. The problem is right noticeable however can pains gasmileage and also power. Instead of the coil is a ten minute job.Finally, the timing belt can skip a tooth, resulting in poorperformance and gas mileage, and also gurgling noises once drivinguphill v the air conditioning on.
Most that the adhering to information is native Chrysler press releases.Chrysler - dodge - Plymouth 2.0 liter engine details from ChryslerThe cross-flow cylinder head to be made of actors aluminum, through pent-roofcombustion chambers and four valves every cylinder. The camshaft was installedaxially, indigenous the former of the head. Spark plug tubes were pressed intothe head and also held v anaerobic sealer, sealing against theunderside that the cylinder-head cover.Connecting rods and also rod caps were forged from powder steel andmachined in one piece, enabling weight reduction v greaterdimensional control and also eliminating the small-end balance pad.After machining, a parting linebetween cap and rod to be scribed top top both sides of the stick by a laser beam, a patented process used because that the very first time in the industry.Pressure ~ above the within diameter of the pole endthen fractured the rod along the scribe marks. The uneven mating surfacesprovided perfect alignment duringengine assembly. The lid bolts to be threaded straight into the shank the the rod, easing assembly.
Chrysler reduced weight by using actors aluminum pistons through a shallow crown; pins were organized in location by a press fit in the rods.The cast iron block was 8.35 customs (212 mm) high, and also ended in ~ the centerline the the crank shaft; the top deck was open up to reduced weight. The crank was supported by a bedplate under the block, comprised of a perimeter wall surface andtransverse webs, i m sorry also added structuralrigidity to the engine because that durability and also quiet operation. The bedplate, which also noted a flat sealingsurface because that the oil pan, attaches to the basic of the block.Coolant flowed about all cylinders, and the water pump housing was cast into thefront that the clock.ManifoldsThe intake manifold was injection molded of 30 percent glass-fillednylon, which listed a far smoother wait path compared with metal manifolds, if slashing weight from approximately 9 lb to 4.1 lb (1.8 kg). It had actually 16.5 inch (420 mm) major runners to optimize low-speed torque; they were curved to increase their length. One jogger feeds both valves that eachcylinder. A tapered plenum and also elbow section provide air come the runners.
Manifold attachments points in ~ the head includedcompression limiters the assure suitable sealing without damaging theplastic material. The exhaust manifold was a compact, lightweight nodular iron castingthat enables exhaust gas to conveniently heat the catalytic converter tooperating temperature for short emissions.Valve TrainPowdered-metal valve chair inserts and also valve guides were pressedinto the head. The input ports arisen turbulence in the cylinders to speedcombustion.
Asingle, centrally-mounted camshaft set four valves every cylinder inmotion (DOHC versions used separate cams). Entry valves to be 1.3 inches (33 mm) in diameter, exhaust valves1.1 inches (28 mm). Valves had actually a 42° includedangle, exhaust valves rearward, input valves forward; intake valveswere splayed 3.6° for clearance to the spark plug tubes.The valve train could regulate valve actuation to 7200 rpm. Thecamshaft was post-hardened nodular iron with three lobes per cylinder (two because that intake valves and also one for exhaust). The camshaft operatedaluminum center-pivot rocker arms through roller bearing camfollowers and miniature hydraulic lash adjusters above the valve tips.Exhaust rockers were forked therefore they can operate 2 valves. The rockerarms pivoted top top shafts clamped to the head. The lightweight valvesneeded only solitary valve springs.The camshaft was thrust by a cog belt, with extra strength to handle the load of operation 16 valves. A spring-loaded automatic tensioner v hydraulic dampingpushed one idler pulley versus the ago of the belt (it should generally be replaced with the belt). Low-inertiasprockets the powdered metal were spaced away from the clock toreduce the belt operation temperature. The belt is fully enclosedby a two item close- installation molded plastic cover to store dirt and moisture out.Crankshaft and bearingsThe modular steel crankshaft had counterweights onboth sides of each crank pin to balance the bearing rods because that smooth,quiet operation, and also weighed 33 pounds (15 kg).Counterweights straddling each crank pin permit smaller bearingdiameters, cutting friction. Diameters that the key bearings were 20%smaller than past practice and also diameters of the rod bearingswere 8% smaller.A conventional inertia-ring vibration damper is mounted on the noseof the crankshaft. The inertia-ring has machined-in pulley grooves todrive the alternator and also accessory belts. The damper minimizes enginenoise and also vibration.The camshaft operates straight in the cylinder head there is no bearinginserts. The main and also rod bearings have high-load bi-metal inserts.Neon engine lubrication and coolingThe powdered steel gerotor oil pump was placed in the front of the block,and moved by the crankshaft. The block was inclined to the ideal (rearward in the car) to allowthe oil to drain easily indigenous the head. Oil capacity was 4 quarts, plus filter, with SAE 5W-30 oil, great SG/SH, recommended
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The water pump was thrust by the time belt, and also had a housing developed into the block. A single molded plasticunit was the merged thermostat housing, filler neck,radiator water tap nipple, and also overflow nipple.The thermostat had an air vent and also a check ball that enabled air inthe coolant come escape when the device was cool, but seated v a tightfit come assure rapid engine warm up. Enabling air to escape the venthelp protect against swings in coolant temperature during warm up, and made refilling the system easier because it prevent airentrapment; it also prevented premature head gasket failure caused by balloon in the antifreeze.Sealing
|% stronger thantraditional drop forging||HS150||HS160||HS170|
|Ultimate tensile strength||1.0%||6.6%||11.6%|
|Compressive yield strength||12.2%||13.5%||21.3%|
Powder-forged rods to be made native one 3 mixes: 3Cu5C, 3Cu6C, 3Cu7C, all containing 3% copper, and 0.50%, 0.57%, or 0.64% carbon, respectively. (The Metaldyne profession names are HS150ª, HS160ª, and HS170ª.) because that the 2.0 and 2.4 engines:
All 1995-1997 connecting rods are made indigenous HS150.All 1997-2005 DOHC (except SRT) and also standard SOHC rods are made indigenous HS160.All 2001-05 Magnum SOHC and SRT room made from HS170; this mix is likewise used because that the SRT V8s. The 01-05 Magnums have actually the strongest obtainable rods accessible for a 2.0 engine.A source from Metaldyne created that the 6.1 and 6.4 Hemi have HS150, no HS170, rods, and that there are five mixes because that powder forged rods ~ above the 2.0: 2Cu5C, 2Cu6C, 3Cu5C, 3Cu6C, 325Cu7C. The very first two space 2% copper, the third and 4th are 3% copper, and the critical is 3.25% copper. The carbon level is 0.50% for 5C, 0.57% for 6C, or 0.64% for 7C. The corresponding Metaldyne trade names space LS120™, MS130™, HS150™, HS160™, and also HS170M™. For the 2.0 and also 2.4 engines, this source wrote the all 1995-2010 connecting rods space made from LS120; the SRT V8s room made native HS150. The 2.4 Turbo (SRT) had Mahle forged steel connecting rods made v C70 material."Wheatking" discussed that the 2.0 to be the very first American-produced engine come be used in a Japanese automobile since human being War II (before and during the war, Toyota supplied Chevrolet engines cloned so fine the parts were interchangeable - in their copies of evade trucks, whose parts interchanged with the real thing).SOHC Engine Specs (1994-99)132 bhp (98 kW)
5000.Gas usage in the 1995-99 Neon: 29 city/38 highway (with five-speed). Mileage inthe Breeze/Stratus and also Eclipse/Talon to be lower, early to added weight. Mileage differed in the 2000-2004 Neons early out to various gearing; 2000-03 Neons, which offered the old ACR gearing, had particularly poor highway mileage.The 1995-99 DOHC produced 150 horsepower in the Neon and 140 speech in the Mitsubishi Eclipse and also Eagle Talon (due to packaging issues, the manifolds were reversed on Eclipse/Talon).Bore x stroke: 3.44 (87.5) x 3.27 (83) (Bore-to-stroke ratio -- 1.05:1)Block height: 8.35 (212.0)Rod length: 5.47 (139.0)Connecting rod L/R: 3.35:1Compression ratio: 9.8:1Displacement: 121.8 cubic inches (1996 cc)More 2.0 and related pages