LSJ / LNF Difference?
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From: buffalo/ny
htv...harrop twin verticies? correct? isn't that what area, n raven have?
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From: Maidstone, SK
Drive ability? Well... theres a reason I bought an LSJ over a GTI or skittles.
Yup... the HTV is the Harrop TVS. I know there are a few guys with them. Check out the HTV thread to see who they are.
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From: Indiana, Fort Wayne
either way you put it i would much rather have the instant boost thru the entire rpm then gobs of hp that you dont get till later... htv1320 is going to make that power instant with no lag . im not liking the whole dierect injection on the new cobalt if it wasnt for that iwould reconsider it but i guess i am going to be like the others here wait and see( i believe the lsj is going to come out on top)
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From: Tampa, fl
either way you put it i would much rather have the instant boost thru the entire rpm then gobs of hp that you dont get till later... htv1320 is going to make that power instant with no lag . im not liking the whole dierect injection on the new cobalt if it wasnt for that iwould reconsider it but i guess i am going to be like the others here wait and see( i believe the lsj is going to come out on top)
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From: PA
Alot of the post crack me up. Of course the LSJ was under rated from factory and I'm sure the LNF is also under rated. It is well known for Chevy and Dodge to under rate cars from factory for insureance reasons. Also its funny how people talk about turbo lag and bleh bleh. Anyone who knows their force induction knowns that talking about spool times is worthless. When it comes to small engines or 4 bangers turbo > supercharged
Rent me! per hour
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From: Still fixing others mistakes.
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From: AZ
LNF Rating = 260 hp / 260 ft-lbs
LSJ Rating = 205 hp / 200 ft-lbs
However based on numerous dynos, the LSJ's actual stock output is in the area of 255-270 hp, and 220-240 ft-lbs. So going off usual stock LSJ dynos its more like this...
LNF Rating = 260 hp / 260 ft-lbs
LSJ Rating = 265 hp / 230 ft-lbs
LNF has direct injection, VVT, and a turbo.
LSJ has standard electronic fuel injection, no VVT, and supercharger.
EDIT* If you look at the GM rating, it says 205 hp @ 5600 rpm. However just about EVERY LSJ stock dyno, peak power is made at the rev limiter or ~6500 rpm, hmmmm...
LSJ Rating = 205 hp / 200 ft-lbs
However based on numerous dynos, the LSJ's actual stock output is in the area of 255-270 hp, and 220-240 ft-lbs. So going off usual stock LSJ dynos its more like this...
LNF Rating = 260 hp / 260 ft-lbs
LSJ Rating = 265 hp / 230 ft-lbs
LNF has direct injection, VVT, and a turbo.
LSJ has standard electronic fuel injection, no VVT, and supercharger.
EDIT* If you look at the GM rating, it says 205 hp @ 5600 rpm. However just about EVERY LSJ stock dyno, peak power is made at the rev limiter or ~6500 rpm, hmmmm...
the LSJ makes 250 crank hp at best bone stock
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From: Orange, CA
Also according to Blown's numbers, torque would be right around 195wtq stock and 210wtq with stage 2.
I'm just saying that 225whp is dynojet, and the 110-118 is mustange dyno, and people just said otherwise to boost their own egos.
Thank you.
Last edited by Archie; Mar 28, 2008 at 03:12 PM. Reason: Automerged Doublepost
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From: Maidstone, SK
intake and full exhaust - over $1200 before install
stage 2 - $500 before install... maybe...
BTW...
Knowledge of compressors > You
Of course you will only get 10-15 WHP from a stage 2.... the blower is past efficiency from factory. Spinning it harder is like pushing a turbo too far... heat heat heat and work work work!
As you may notice, as we go smaller in pulley sizes, we get less gains. It takes more power to turn the blower, and makes more heat. Simple engine fundamentals.
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From: buffalo/ny
An intake and full exhaust might get you the same, but;
intake and full exhaust - over $1200 before install
stage 2 - $500 before install... maybe...
BTW...
Knowledge of compressors > You
Of course you will only get 10-15 WHP from a stage 2.... the blower is past efficiency from factory. Spinning it harder is like pushing a turbo too far... heat heat heat and work work work!
As you may notice, as we go smaller in pulley sizes, we get less gains. It takes more power to turn the blower, and makes more heat. Simple engine fundamentals.
intake and full exhaust - over $1200 before install
stage 2 - $500 before install... maybe...
BTW...
Knowledge of compressors > You
Of course you will only get 10-15 WHP from a stage 2.... the blower is past efficiency from factory. Spinning it harder is like pushing a turbo too far... heat heat heat and work work work!
As you may notice, as we go smaller in pulley sizes, we get less gains. It takes more power to turn the blower, and makes more heat. Simple engine fundamentals.
#4 h/e's are your friends.
*whisper* i thought u had a tvs? i can keep secrets...
i won't tell.
Last edited by cobalt_driver; Mar 28, 2008 at 04:02 PM. Reason: Automerged Doublepost
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From: Matteson, Illinois
Again I say, it won't make its full power until the 3K range.
The LNF isn't though. Most people dyno in the correct areas. Its not a new engine. its been out for a while.
And again I say, it depends on the application and what you're wanting from the car. For overall power every time a turbo will out perform.
Alot of the post crack me up. Of course the LSJ was under rated from factory and I'm sure the LNF is also under rated. It is well known for Chevy and Dodge to under rate cars from factory for insureance reasons. Also its funny how people talk about turbo lag and bleh bleh. Anyone who knows their force induction knowns that talking about spool times is worthless. When it comes to small engines or 4 bangers turbo > supercharged
And again I say, it depends on the application and what you're wanting from the car. For overall power every time a turbo will out perform.
Last edited by Scythe_Snake; Mar 28, 2008 at 07:39 PM. Reason: Automerged Doublepost
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From: Mesa, AZ
Dude, the turbo on the LNF is so tiny, I bet they had to do something to keep it from spooling at idle
Last edited by Blown 4-banger; Mar 28, 2008 at 10:28 PM. Reason: Automerged Doublepost
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From: Matteson, Illinois
Yeah I know, i've eaten candy bigger than that thing, but I've driven a redline and it didn't feel like at 2K it made full boost. Felt closer to 3K
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