Forced Induction Turbos/Superchargers

One Nasty Ecotec!

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Old Jul 7, 2007 | 06:13 AM
  #26  
HunterKiller89's Avatar
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Originally Posted by Blown 4-banger
You can't make anything have 1000 hp. There are some things that hinder the ability to make TONS of power. For instance, the LS series engine is a GREAT engine, however one flaw that keeps it from being a motor capable of 1000+ hp is the lack of head clamping force ie. only 4 head bolts per cylinder, other engines have 5 or 6 bolts per cylinder. When the cylinder pressure starts getting too high (around 1000 hp) say bye bye to Mr. Headgasket

For a motor to make 1000 hp, it has to have a damn good design, because just like the LS series motor, a simple design flaw can hinder an engines ability to make ultra high power levels.
they sell crate engine LS2's with an advertised "double the number of stock head bolts"...its advertised as like 750HP ready....and im sure it can go higher with some more modifications
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Old Jul 7, 2007 | 02:47 PM
  #27  
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Originally Posted by HunterKiller89
they sell crate engine LS2's with an advertised "double the number of stock head bolts"...its advertised as like 750HP ready....and im sure it can go higher with some more modifications
About 1000 hp is the limit for the LS series motor. Everything else is good for like 2000+ just the number head bolts kills it. Now GM just released the LSX, which has 6 head bolts per cylinder, and is advertized to handle 2500+ hp. GM made a mistake (seems like a common occurance ) and fixed it with the LSX.
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Old Jul 10, 2007 | 04:20 PM
  #28  
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The ECOTec engine is one of the most well designed engine series in domestic vehicles for a 4 cylinder. However, GM is smart. You all say that the engine went out @ 300whp or in some cases 280hp.

If GM would of wanted you to have 300whp for 20k, they would of given it to you.

The SRT4's stand up to high amounts of boost stock.

GM has a build book which explains how to achieve up to 1400hp. But, they also give you part numbers to go along with it.

This is what makes GM smart. If you want to go fast, you got to buy the parts to do it. (Duh) and they want there share.


Granted, none of the dragsters or really fast cobalts with the ecotec engines are using the stock production engines from the get go. They are using the ECOTec racing block, granted alot of the stock internals will work in the race block.


The 2.4L Ecotec w/ VVT is probably equivalent to the SRT4 2.4L Motor.

Both can handle respectfuly the same amount of boost. However, the Pistons in the Ecotec are a bit weak, and are higher compression.

If you would put lower comp pistons, and a non plastic intake manifold in the ecotec 2.4, i am almost willing to bet my left nut that i can hold up against a 2.4L turbo SRT4 motor.
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Old Jul 10, 2007 | 06:52 PM
  #29  
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Originally Posted by TCarter
The ECOTec engine is one of the most well designed engine series in domestic vehicles for a 4 cylinder. However, GM is smart. You all say that the engine went out @ 300whp or in some cases 280hp.

If GM would of wanted you to have 300whp for 20k, they would of given it to you.

The SRT4's stand up to high amounts of boost stock.

GM has a build book which explains how to achieve up to 1400hp. But, they also give you part numbers to go along with it.

This is what makes GM smart. If you want to go fast, you got to buy the parts to do it. (Duh) and they want there share.


Granted, none of the dragsters or really fast cobalts with the ecotec engines are using the stock production engines from the get go. They are using the ECOTec racing block, granted alot of the stock internals will work in the race block.


The 2.4L Ecotec w/ VVT is probably equivalent to the SRT4 2.4L Motor.

Both can handle respectfuly the same amount of boost. However, the Pistons in the Ecotec are a bit weak, and are higher compression.

If you would put lower comp pistons, and a non plastic intake manifold in the ecotec 2.4, i am almost willing to bet my left nut that i can hold up against a 2.4L turbo SRT4 motor.
The GM build book does not tell you how to reach 1400 HP in every detail and no book could tell you how to do it. It gives you a insight on what is involved but it can not realistically give you a step by step on how to do so. It mentions nothing about engine management systems...which is the most important part.

The SRT-4 2.4 motor and the LE5 engine share nothing in common besides the same displacement...no, they are not comparable and should not be compared.

PLEASE do not spread around that the plastic manifolds are a issue because they are not.

Also boost pressure has nothing to do with how much power they can produce.

The LSJ motor can handle plenty more than the 300 whp that seems to be impossible...it has more to do with the compressor than the motor.

And where did you hear the 2.4 pistons are weak?
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Old Jul 10, 2007 | 08:06 PM
  #30  
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Originally Posted by NJHK
The GM build book does not tell you how to reach 1400 HP in every detail and no book could tell you how to do it. It gives you a insight on what is involved but it can not realistically give you a step by step on how to do so. It mentions nothing about engine management systems...which is the most important part.

The SRT-4 2.4 motor and the LE5 engine share nothing in common besides the same displacement...no, they are not comparable and should not be compared.

PLEASE do not spread around that the plastic manifolds are a issue because they are not.

Also boost pressure has nothing to do with how much power they can produce.

The LSJ motor can handle plenty more than the 300 whp that seems to be impossible...it has more to do with the compressor than the motor.

And where did you hear the 2.4 pistons are weak?
They are cast, what do you expect
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Old Jul 10, 2007 | 08:11 PM
  #31  
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you know adam...the plastic manifold actually will break under high boost...like 20psi area..
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Old Jul 10, 2007 | 09:15 PM
  #32  
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Originally Posted by Blown 4-banger
They are cast, what do you expect
oh sorry...they aren't good for over 400 HP, so that means they are weak...
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Old Jul 10, 2007 | 09:16 PM
  #33  
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Originally Posted by NJHK
oh sorry...they aren't good for over 400 HP, so that means they are weak...
Your a fast learner!
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Old Jul 10, 2007 | 09:16 PM
  #34  
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Originally Posted by HunterKiller89
you know adam...the plastic manifold actually will break under high boost...like 20psi area..
One person had it happen
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