2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

Hahn RaceCraft 2.4 Cobalt TurboSystem

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Old 06-15-2007 | 01:59 PM
  #351  
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Originally Posted by elecblue06
and i pay like 1800 a year for my car insurance man jeez your wallet must hate your life
lol yikes i pay 240 a month for my balt's insurance
Old 06-15-2007 | 02:10 PM
  #352  
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Originally Posted by ProudCobaltOwner
I was wondering, you say that there is no bov right so we don't get to hear that satisfying
"pffssshhhhhhh" sound? So what about the pressure in the intake manifold, wouldn't that be a cause for concern.
No, there's a BOV, it's just very subtle sounding.
Old 06-15-2007 | 02:12 PM
  #353  
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is there a way to make it LOUD lol
Old 06-15-2007 | 02:13 PM
  #354  
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Originally Posted by fbaero10
is there a way to make it LOUD lol
ricer lol pffffssssh! i wouldnt mind that sound either but not for our cars. i think making it quite would be cooler it would be like a sleeper car. no one would know theres a turbo till you raced them. its all quite then comes outta no were and kicks there ass.

ryan.
Old 06-15-2007 | 02:15 PM
  #355  
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You guys, lol! Actually, there's no good way to make it loud, as it recirculates back into the intake tube, and opening up this valve would cause engine management problems. But don't fret...you'll hear it, it just won't startle the car next to you!
Old 06-15-2007 | 02:17 PM
  #356  
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Ok great, thanks Bill.
Old 06-15-2007 | 02:19 PM
  #357  
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yeah i figured itd cause some problems if we altered it. i think ill just buy the kit and then wait for the upgrades. no need to be messin with somethin thats brand new. even though ass soon as i bought my car i spent like 400 bucks in 2 days on it

ryan.
Old 06-15-2007 | 02:21 PM
  #358  
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Originally Posted by EcoBoost
You guys, lol! Actually, there's no good way to make it loud, as it recirculates back into the intake tube, and opening up this valve would cause engine management problems. But don't fret...you'll hear it, it just won't startle the car next to you!
is there a way to make it just stand out instekad of making it recirculate?
Old 06-15-2007 | 02:55 PM
  #359  
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am I the only one that has decent insurance...

personally the loud BOV is over rated it sounds cool... i like the procharger BOV flutter but the loud PSSSHHHH just is like HEY I HAVE A TURBO ... sleeper FTW
Old 06-15-2007 | 03:06 PM
  #360  
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sleeper? lol i dont really get that term, why pay all that money to make yours fast and try to be a sleeper? like honestly are you racing for pink slips? are you racing for tons of money? lol nope
Old 06-15-2007 | 03:06 PM
  #361  
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recirculateing valve for the win.
Old 06-15-2007 | 03:10 PM
  #362  
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sleeper is nice because it's nice to smoke cars without them having any idea why...

still sleepers FTW
Old 06-15-2007 | 03:14 PM
  #363  
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elec well once i get my turbo let me know when you wanna race for a few Gs
Old 06-15-2007 | 03:20 PM
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right.. ok long as i have my procharger first.. we'll see which platform really is better for the car...

seriously dude whats with you're vendetta against me today
Old 06-15-2007 | 03:22 PM
  #365  
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lol i have no problem, but im looking to get the 20g turbo actually... lol

we have to see with the financing through hahn is right now
Old 06-15-2007 | 04:00 PM
  #366  
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Originally Posted by fbaero10
elec well once i get my turbo let me know when you wanna race for a few Gs

Where's Vin Diesel when you need him. I think we need a few pages of Fast and Furious quotes to reset the balance of force in the universe
Old 06-15-2007 | 04:02 PM
  #367  
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Originally Posted by fbaero10
is there a way to make it just stand out instekad of making it recirculate?
You are missing the reason why it recirculates. These cars use MAF based engine management. If the MAF meters in air to the engine, which is then simply blown off into the atmosphere, then the air measured by the MAF is no longer what is actually going through the engine. It would screw up the air to fuel ratio.
Old 06-15-2007 | 04:06 PM
  #368  
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i understand that, im just saying he said the air fuel ratio can be fine tuned. and its not like other turbos dont have it shooting out.. it wasnt that dumb of a question, i know what your saying but thats not what i was getting at

Originally Posted by monkeiboy

Where's Vin Diesel when you need him. I think we need a few pages of Fast and Furious quotes to reset the balance of force in the universe
haha no that is some kid that i was talking to in another thread. it was an inside joke thing lol dont worry.

Last edited by fbaero10; 06-15-2007 at 04:06 PM. Reason: Automerged Doublepost
Old 06-16-2007 | 05:29 AM
  #369  
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has anyone purchased any yet?

and all that money for a locked system?

isn't that what chevy did in the first place and its been a nitemare?
Old 06-16-2007 | 06:07 AM
  #370  
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I'm pretty sure the reason Hahn plans to keep the PCM pretty much 'locked' is so that people don't blow their engines up..

That and the AFR can now be adjusted with just a screw turn, which is a hell of a lot easier than any other way.. so in other words, it makes the most frequently tuned piece super easy to access; and preserves their flash for engine durability.

And it's all that money for 100 whp, 1.5-2secs on the 1/4, and the ability to move up in Stages as time progresses (The 2.4L VVT isn't going anywhere anytime soon..). Doesn't sound like too bad for me.

And sadly, no, not available for purchase yet..
Old 06-16-2007 | 06:12 AM
  #371  
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lol its locked so people dont steal their tunning lol. think about it if someone could snag their tunning you could piece together your own turbo for half the price
Old 06-16-2007 | 06:18 AM
  #372  
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Honestly I'm sure that will likely happen anyhow. Now that it's been proven this can work, and once a few folks have installed and shown it has durability it is likely just a matter of time before someone reverse engineers or just all out steals this.

But, then again, you get what you pay for. And I personally - especially since I'll be losing my warranty - would rather from a respected name that will back up their work.
Old 06-16-2007 | 09:51 AM
  #373  
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i mostly don't like the speed limiter ... i don't mind running ZR's .. but I hate gettiing beat because i Stop an 130 and the other guy can hit 135 or whatever.
Old 06-16-2007 | 10:21 AM
  #374  
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people need to stop worrying about the speed limiter... unless you have better tires upping the speed limiter can just cause problems. plus if you beat him to 130 you beat him. the amount of danger between 130-150 is ridiculous ... and guess what... there will just be a car that can go faster than you once you race that fast...

plus most races happen from 60-120 or so or 40-100, if you haven't beat them by then you're not going to ... or if you're ahead by then you won.... unless they have a monstrous turbo that doesn't spool up till 110 i think you're safe.

I'm ecstatic about this package.. I just want to know how much stress the stock 2.4 can take over extended periods of time. so that way when I go F/i I'll have a better idea of where my limits are... since there's documentation on how much the 2.0s and 2.2s can withstand on stock internals but no one seems to know what the 2.4 can handle for the individual parts and what the weak point mechanically is
Old 06-16-2007 | 11:08 AM
  #375  
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Originally Posted by elecblue06
I'm ecstatic about this package.. I just want to know how much stress the stock 2.4 can take over extended periods of time. so that way when I go F/i I'll have a better idea of where my limits are... since there's documentation on how much the 2.0s and 2.2s can withstand on stock internals but no one seems to know what the 2.4 can handle for the individual parts and what the weak point mechanically is
You'll be pleased to learn that we've already pushed the stock 2.4 to well over 400 engine HP in our Solstice program, and had no issues. Does this mean we are advocating 450 HP stock 2.4's? Not really...the intention of this 'search for the limit' is more about demonstrating that if the engine will withstand 450 HP, it should be very durable and long-lived at the 300 or so HP that the majority of our prospective customers will operate at.

LE5 has a number of 'gifts' from GM. I began dismantling, studying and comparing them over a year ago, and this is one fine engine internally! Some of the notable features:
  • Forged connecting rods
  • Friction coated pistons w/internal oilcooling passages
  • Oil sprayers below pistons to move oil into the oilcooling passages
  • Floating wrist pins with bushed rod small ends
  • Tapered rod small ends and piston pin bosses for additional wrist pin support
All this makes for one durable sonofabitch, especially as compared to the earlier L61 2.2's which feature powdered metal con rods that limit them to a safe 300HP maximum.

It's not a reach to say that the LE5 is very similar in internal features to the LSJ, just 20% bigger! 20% is a bunch...in V8 parlance, it's equivalent to the difference between a 350 and a 427!


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