wiki for LFX, some details

garcmol · 06-19-2012, 02:36 PM

Noticed the wiki page didn't have some engine data for the LFX like it does for the LLT, LS3 and L99.

Just some food for thought if someone wants to update it. Sources are listed at the bottom.

The LFX is an enhanced version of the LLT engine. Introduced in the 2012 Chevrolet Camaro LS, it is 20.5 pounds (9.3 kg) lighter than the LLT, due to a redesigned cylinder head and integrated exhaust manifold, and composite intake manifold. Other components like the fuel injectors, intake valves, and fuel pump have also been updated. Power and torque are up slightly from the LLT. The compression ratio is 11.5:1.

What gives the LFX more mojo for the 2012 Camaro can be credited towards several mechanical improvements, including a new cylinder head design with an integrated exhaust manifold, an improved intake port design and larger intake valves within the cylinder heads. We also see a new fuel pump system and isolated fuel rail, new fuel injectors and a composite intake manifold. Rounding out the improvements are stronger, lighter connecting rods, a camshaft cap and throttle body design enhancements.

2012 Chevrolet Camaro 323 hp (241 kW) @ 6800 rpm 278 lb·ft tq(377 N·m) @ 4800 rpm

The LFX engine is significantly lighter than the current 3.6L V-6. The integrated cylinder head/exhaust manifold design saves approximately 13 pounds (6 kg) per engine over the cylinder heads and manifolds of the current engine, while the new composite intake manifold saves approximately 5.5 pounds (2.5 kg) over the current aluminum intake. Additionally, a lighter-weight structural front cover and lighter-weight, high-strength connecting rods bring the total weight savings to 20.5 pounds (9.3 kg), which helps the vehicle’s fuel efficiency and enhances its feeling of driving balance.

Additionally, the optimized-flow fuel injectors and integrated exhaust manifolds/cylinder heads promote lower emissions. And along with its weight savings, the composite intake manifold has a smaller radiated surface area to help it maintain noise and vibration characteristics comparable to the previous aluminum manifold.

Greater airflow brings more power. The new cylinder heads also bring a revised intake port design that enhances airflow to the combustion chambers. Larger-diameter intake valves (38.3 mm vs. 36.96 mm) are used in the heads and work in conjunction with new, longer-duration intake camshafts to provide the engine’s boost in horsepower.
The valves let air in and exhaust escape from the combustion chambers. The duration of the camshaft determines how long the valves are open. By using larger valves and holding them open longer, more of the air is pulled into the combustion chamber, for a more powerful combustion. Often, the tradeoff for greater power is greater fuel consumption, but the LFX engineers adapted new fuel injectors that are optimized for the engine’s performance parameters. The result is more power without sacrificing fuel economy. The more-efficient combustion also means reduced emissions.
Of course, the LFX engine retains direct fuel injection. It optimizes fuel delivery to the combustion chamber by introducing fuel closer to the combustion chamber. The result is better efficiency in the combustion process leading to increased fuel efficiency at part and full throttle.
The LFX uses a new fuel pump for the direct injection system, along with a new, isolated fuel rail. The new fuel pump is quieter, while the isolated fuel rail further reduces fuel system noise.

Sources:

gmauthority.com
wikipedia.com
hfv6.org

The Stig · 06-19-2012, 02:43 PM

updating it now

edit: don't know how to add an article

so I can't update it

garcmol · 06-19-2012, 02:52 PM

That's cool

Here's the dyno from gmpowertrain.com

garcmol · 06-19-2012, 02:54 PM

And details from the same sight

Type: 3.6L V6
Displacement: 3564 cc ( 217 ci )
Engine Orientation: L= Longitudinal T=Transverse L & T
Compression ratio: 11.5:1
Valve configuration: Dual overhead camshafts
Valves per cylinder: 4
Assembly site/s: St. Catharines, ON
Flint, MI
Melbourne, Australia
Ramos Arizpe, Mexico
Valve lifters: Roller follower with hydraulic lash adjusters
Firing order: 1-2-3-4-5-6
Bore x stroke: 94.0 x 85.6 mm
Bore Center ( mm ) 103
Bore Area ( cm2 ) ( total engine bore area ) 416.37
Fuel system: DI
Fuel Type: Regular Unleaded, E85 capable
E85 Applications: Impala (except PZEV), SRX, Caprice, Lacrosse
Applications: Estimated Horsepower: hp ( kw ) @ rpm
Chevrolet Camaro Coupe and Convertible 323 hp (241kW) @ 6800 SAE Certified Maximum Engine Speed: 7200rpm
Engine Mass (kg/lbs) engine plant as shipped weight 157 / 345 ( estimate )
Emissions controls: Evaporative system
Internal exhaust gas recirculation ( EGR )
Dual close coupled converters
Supplemental Air Injection PZEV (Impala) only
Positive crankcase ventilation
MATERIALS
Block: Sand cast aluminum (319) with cast in iron bore liners
Cylinder head: Cast aluminum ( 319 semi permanent mold )
Intake manifold: Aluminum ( 319 Lower ), Composite ( Upper )
Main bearing caps: Sintered steel ( CU infiltrated )
Crankshaft: Hardened Forged steel (1538 MV )
Camshaft: Cast iron
Connecting rods: Sinter forged steel
Additional features: Four-cam continuously variable cam phasing
Pressure-actuated piston cooling jets
Torque-based engine management system
Secondary throat cut inlet ports
Direct injection fuel system
High-pressure, engine-driven fuel pump with stainless steel fuel rails
Electronic Throttle Control w/ integrated Cruise Control
Structural front cover with damper plates removed
Iridium center electrode / platinum side wire tip spark plugs
Extended life coolant
Extended life EPDM accessory drive belt
7.7mm IT chain system for all HFV6 applications
Coil-on-plug ignition
Structural cast-aluminum oil pan with steel baffles
GM Oil Life System
5W30 Dexos oil

garcmol · 06-20-2012, 10:37 AM

hmmmm

The Stig · 06-20-2012, 11:47 AM

........

garcmol · 07-20-2012, 01:33 PM

06-19-2012, 02:36 PM	#1
garcmol Drives: 10 1LT SIM; 91 B4C sleeper Z Join Date: Aug 2009 Location: Ft. Mitchell, Alabama Posts: 7,199	wiki for LFX, some details Noticed the wiki page didn't have some engine data for the LFX like it does for the LLT, LS3 and L99. Just some food for thought if someone wants to update it. Sources are listed at the bottom. The LFX is an enhanced version of the LLT engine. Introduced in the 2012 Chevrolet Camaro LS, it is 20.5 pounds (9.3 kg) lighter than the LLT, due to a redesigned cylinder head and integrated exhaust manifold, and composite intake manifold. Other components like the fuel injectors, intake valves, and fuel pump have also been updated. Power and torque are up slightly from the LLT. The compression ratio is 11.5:1. What gives the LFX more mojo for the 2012 Camaro can be credited towards several mechanical improvements, including a new cylinder head design with an integrated exhaust manifold, an improved intake port design and larger intake valves within the cylinder heads. We also see a new fuel pump system and isolated fuel rail, new fuel injectors and a composite intake manifold. Rounding out the improvements are stronger, lighter connecting rods, a camshaft cap and throttle body design enhancements. 2012 Chevrolet Camaro 323 hp (241 kW) @ 6800 rpm 278 lb·ft tq(377 N·m) @ 4800 rpm The LFX engine is significantly lighter than the current 3.6L V-6. The integrated cylinder head/exhaust manifold design saves approximately 13 pounds (6 kg) per engine over the cylinder heads and manifolds of the current engine, while the new composite intake manifold saves approximately 5.5 pounds (2.5 kg) over the current aluminum intake. Additionally, a lighter-weight structural front cover and lighter-weight, high-strength connecting rods bring the total weight savings to 20.5 pounds (9.3 kg), which helps the vehicle’s fuel efficiency and enhances its feeling of driving balance. Additionally, the optimized-flow fuel injectors and integrated exhaust manifolds/cylinder heads promote lower emissions. And along with its weight savings, the composite intake manifold has a smaller radiated surface area to help it maintain noise and vibration characteristics comparable to the previous aluminum manifold. Greater airflow brings more power. The new cylinder heads also bring a revised intake port design that enhances airflow to the combustion chambers. Larger-diameter intake valves (38.3 mm vs. 36.96 mm) are used in the heads and work in conjunction with new, longer-duration intake camshafts to provide the engine’s boost in horsepower. The valves let air in and exhaust escape from the combustion chambers. The duration of the camshaft determines how long the valves are open. By using larger valves and holding them open longer, more of the air is pulled into the combustion chamber, for a more powerful combustion. Often, the tradeoff for greater power is greater fuel consumption, but the LFX engineers adapted new fuel injectors that are optimized for the engine’s performance parameters. The result is more power without sacrificing fuel economy. The more-efficient combustion also means reduced emissions. Of course, the LFX engine retains direct fuel injection. It optimizes fuel delivery to the combustion chamber by introducing fuel closer to the combustion chamber. The result is better efficiency in the combustion process leading to increased fuel efficiency at part and full throttle. The LFX uses a new fuel pump for the direct injection system, along with a new, isolated fuel rail. The new fuel pump is quieter, while the isolated fuel rail further reduces fuel system noise. Sources: gmauthority.com wikipedia.com hfv6.org __________________ Pedders Pace Car Package, Injen CAI, Flowmaster AT, AAC Lighting, ZL1 fascia/skirts, RKSport Ram Air hood, vented fenders, painted stripes (Gary's Customz), Honor and Valor badged (Thank you, John)

06-19-2012, 02:43 PM	#2
The Stig knows 2 facts about ducks Drives: ...and they're both wrong Join Date: Aug 2009 Location: The HMS Invincible Posts: 25,072 View My Garage	updating it now edit: don't know how to add an article so I can't update it __________________

06-19-2012, 02:52 PM	#3
garcmol Drives: 10 1LT SIM; 91 B4C sleeper Z Join Date: Aug 2009 Location: Ft. Mitchell, Alabama Posts: 7,199	That's cool Here's the dyno from gmpowertrain.com __________________ Pedders Pace Car Package, Injen CAI, Flowmaster AT, AAC Lighting, ZL1 fascia/skirts, RKSport Ram Air hood, vented fenders, painted stripes (Gary's Customz), Honor and Valor badged (Thank you, John)

06-19-2012, 02:54 PM	#4
garcmol Drives: 10 1LT SIM; 91 B4C sleeper Z Join Date: Aug 2009 Location: Ft. Mitchell, Alabama Posts: 7,199	And details from the same sight Type: 3.6L V6 Displacement: 3564 cc ( 217 ci ) Engine Orientation: L= Longitudinal T=Transverse L & T Compression ratio: 11.5:1 Valve configuration: Dual overhead camshafts Valves per cylinder: 4 Assembly site/s: St. Catharines, ON Flint, MI Melbourne, Australia Ramos Arizpe, Mexico Valve lifters: Roller follower with hydraulic lash adjusters Firing order: 1-2-3-4-5-6 Bore x stroke: 94.0 x 85.6 mm Bore Center ( mm ) 103 Bore Area ( cm2 ) ( total engine bore area ) 416.37 Fuel system: DI Fuel Type: Regular Unleaded, E85 capable E85 Applications: Impala (except PZEV), SRX, Caprice, Lacrosse Applications: Estimated Horsepower: hp ( kw ) @ rpm Chevrolet Camaro Coupe and Convertible 323 hp (241kW) @ 6800 SAE Certified Maximum Engine Speed: 7200rpm Engine Mass (kg/lbs) engine plant as shipped weight 157 / 345 ( estimate ) Emissions controls: Evaporative system Internal exhaust gas recirculation ( EGR ) Dual close coupled converters Supplemental Air Injection PZEV (Impala) only Positive crankcase ventilation MATERIALS Block: Sand cast aluminum (319) with cast in iron bore liners Cylinder head: Cast aluminum ( 319 semi permanent mold ) Intake manifold: Aluminum ( 319 Lower ), Composite ( Upper ) Main bearing caps: Sintered steel ( CU infiltrated ) Crankshaft: Hardened Forged steel (1538 MV ) Camshaft: Cast iron Connecting rods: Sinter forged steel Additional features: Four-cam continuously variable cam phasing Pressure-actuated piston cooling jets Torque-based engine management system Secondary throat cut inlet ports Direct injection fuel system High-pressure, engine-driven fuel pump with stainless steel fuel rails Electronic Throttle Control w/ integrated Cruise Control Structural front cover with damper plates removed Iridium center electrode / platinum side wire tip spark plugs Extended life coolant Extended life EPDM accessory drive belt 7.7mm IT chain system for all HFV6 applications Coil-on-plug ignition Structural cast-aluminum oil pan with steel baffles GM Oil Life System 5W30 Dexos oil __________________ Pedders Pace Car Package, Injen CAI, Flowmaster AT, AAC Lighting, ZL1 fascia/skirts, RKSport Ram Air hood, vented fenders, painted stripes (Gary's Customz), Honor and Valor badged (Thank you, John)

06-20-2012, 10:37 AM	#5
garcmol Drives: 10 1LT SIM; 91 B4C sleeper Z Join Date: Aug 2009 Location: Ft. Mitchell, Alabama Posts: 7,199	hmmmm __________________ Pedders Pace Car Package, Injen CAI, Flowmaster AT, AAC Lighting, ZL1 fascia/skirts, RKSport Ram Air hood, vented fenders, painted stripes (Gary's Customz), Honor and Valor badged (Thank you, John)

06-20-2012, 11:47 AM	#6
The Stig knows 2 facts about ducks Drives: ...and they're both wrong Join Date: Aug 2009 Location: The HMS Invincible Posts: 25,072 View My Garage	........ __________________

07-20-2012, 01:33 PM	#7
garcmol Drives: 10 1LT SIM; 91 B4C sleeper Z Join Date: Aug 2009 Location: Ft. Mitchell, Alabama Posts: 7,199	__________________ Pedders Pace Car Package, Injen CAI, Flowmaster AT, AAC Lighting, ZL1 fascia/skirts, RKSport Ram Air hood, vented fenders, painted stripes (Gary's Customz), Honor and Valor badged (Thank you, John)