rm.lydon08

I searched and couldn't find anything exactly on this topic. I was just wondering what the differences between the LSJ and LNF are besides the obvious (turbo, Direct Injection, VVT). I mean, does the LNF have stronger internals or the LSJ, or are they the same?

Brandon97Z

iTrader: (1)

not sure but this has been disccused many times....search through some old threads in the LNF section.

rm.lydon08

bump

Brandon97Z

iTrader: (1)

to lazy to search i see....

rm.lydon08

I did, I couldn't find anything, I'm on ecotec forums now, and I searched google

boostaddict

I believe the bottom end is the same. The differences lie in what you stated as well as the head. I could be wrong though.

Brandon97Z

iTrader: (1)

ecotecforums will prolly have more accurate information.....the pistons are different due to DI but not sure if they are made out of different material.

drop-n-destroy

iTrader: (1)

X2!!

Here are the specs. Its a sticky on the LNF section.

https://www.cobaltss.net/forums/2-0l-lnf-performance-tech-153/gm-powertrain-website-posts-lnf-info-85804/

rm.lydon08

2007 Ecotec 2.0L I4 Turbo ( LNF ) 51806
Type: 2.0L I4 Turbo
Displacement: 1998 cc ( 122 ci )
Engine Orientation: L ( longitudinal ) T ( transverse ) L
Compression ratio: 9.2:1
Valve configuration: dual overhead camshafts
valves per cylinder: 4
Assembly site: Spring Hill, Tennesee
Valve lifters: hydraulic roller finger follower
Firing order: 1-3-4-2
Bore x stroke: 86.00 x 86.00
Fuel system: Direct Injection
Fuel Type: Premium Fuel Required
Applications: Horsepower: hp ( kw )
Pontiac Solstice GXP 260 hp ( 194 kw ) @ 5300 rpm ( SAE CERTIFIED )
Saturn Sky Red Line 260 hp ( 194 kw ) @ 5300 rpm ( SAE CERTIFIED )
Applications: Torque: lb-ft. ( Nm )
Pontiac Solstice GXP 260 lb-ft ( 353 Nm ) @ 2500 - 5250 rpm ( SAE CERTIFIED )
Saturn Sky Red Line 260 lb-ft ( 353 Nm ) @ 2500 - 5250 rpm ( SAE CERTIFIED )
Fuel shut off: 6200 rpm
Engine Redline: 6300 rpm
Emissions controls: secondary A.I.R. capable
MATERIALS
Block: 319 Aluminum
Cylinder head: Semi-permanent-mold 356 Al cylinder head
Intake manifold: Aluminum
Exhaust manifold: Cast stainless steel
Crankshaft: forged steel
Camshaft: cast nodular iron
Connecting rods: forged steel
Additional features: DI ( direct injection )
Dual-scroll turbocharger
Dual CVCP ( continuously variable cam phasing )
Sodium-filled Iconel exhaust valves
cast pistons with oil squirters
forged connecting rods
steel crankshaft
Semi-permanent-mold 356 Al cylinder head
Variable pressure fuel rail ( 50-150 bar )
Stronger block bulkhead and deeper water jacket
Block modifications for new balance shafts
Lower crankcase / structural oil pan improvements
Coil-on-plug ignition
Direct injection high-pressure multi hole injectors
58x engine position sensing
Stainless steel fuel system components
Cam driven high pressure fuel pump

VS.

2007 Ecotec 2.0L I4 SC ( LSJ )
Type: 2.0L I-4 supercharged
Displacement: 1998cc (122 ci)
Compression ratio: 9.5:1
Valve configuration: dual overhead camshafts (4 valves per cylinder)
Assembly site: Kaiserslautern, Germany
Valve lifters: hydraulic roller finger follower
Firing order: 1 - 3 - 4 - 2
Bore x stroke: 86 x 86mm
Fuel system: sequential fuel injection
Fuel type: premium fuel recommended
Air Delivery Eaton Helical Roots M62 Supercharger @ 12 psi Boost pressure

Applications: Horsepower: hp ( kw )
Chevrolet Cobalt SS 205 hp (153 kw) @ 5600 rpm
Saturn ION Red Line

Applications: Torque: lb-ft. ( Nm )
Chevrolet Cobalt SS 200 lb-ft (272 Nm) @ 4400 rpm
Saturn ION Red Line

Fuel shut off: 6500 rpm
Emissions controls: three-way catalyst

MATERIALS
Block: cast aluminum with cast iron cylinder liners
Cylinder head: cast aluminum
Intake manifold: aluminum
Exhaust manifold: cast iron
Crankshaft: forged steel with induction hardened fillet
Camshaft: cast iron
Connecting rods: forged steel
Additional features: high pressure ( 56 psi ) fuel pump
extended life platinum spark plugs
extended life coolant
electronic throttle control
Individual coil on plug high energy ignition