the lsj and the lnf is the same engine correct??? dont they just have differnt boost methods if their not whats the diff

 

yup same engine just turbo and superchared.. i think dont kill me if im wrong

 

thats what i thought i just wanted to be sure some guy with a redline is trying to argue with some guy saying that they are diff engines and have diff displacement its kinda funny

 

No... you're both wrong.

There are quite a few differences.

But they are the same displacement.

 

well tell me whats the diff i know the manifolds are diff but arnt the internals the same???

 

Very different. Something a search could of easily found.

 

the rods, and crank are the same. the pistons are different. the block is the same.

the head, i believe started life as an lsj head and was modded for the direct injection.

 

area delivers.

 

I am pretty sure I read in a GM book of some sort that the LNF had different rods. At least the casting was different.

 

Things the LNF has that the LSJ doesn't...

LNF = Direct Injection (as in the Fuel injector sprays directly into the combustion chamber)

LNF = VVT

LNF = Lower Compression (possibly Forged) Pistons

The block, crank, and rods might be the same... that'd be the only major/minor components that are the same.

Damn... Area beat me to it.

 

It's in the sticky at the top of this forum...

https://www.cobaltss.net/forums/show...14&postcount=4

 

i was informed it was the same rods.

::shrugs::

not the first time id be wrong

 

no. Both displace the same, however the LNF has direct injection and variable valve timing (i know thats the head but still)

 

Looks like the Block is actually different. The LNF has the GenII Ecotec Block... or some **** like that.

Haha... its not that simple.

 

crank is the same, rod bearings are different material, **** Ijust had that up on my computer too head is almost the same casting, but direct injection, domed pistons, and of course the VVT...

 

thanks guys i havnt done much research on the lnf but i will probably start doing that since im gonna get one.

 

You're going to get an SS/TC or an LNF?

 

SS/TC Engine = lnf

 

I think he was being a smart-ass and asking if you're getting just the engine (i.e. for a swap) or if you're actually getting a whole new 08+ Cobalt.

 

SS/TC = Vtak.

You can really feel the kick.

But this is good info in the thread...

 

Wasn't even being a smart ass...I was earnest in my question.

 

Don't lie....smart ass.

 

connecting rod P/N for LSJ: 12755162
connecting rod P/N for LNF: 12589414

different part numbers for the con rods

no number listed for the crank to compare

 

Really!! I wanted to know, so if it was an LNF engine for a project...THEN I could've been a real smart ass!

 

lol im getting the tc cobalt