Building a motor to support boost / 600 WHP
03-12-2018, 12:00 PM
#101
I hope I can help you learn something today. There is nobody using 93 and 12+ psi of boost on any stock LS engine (for long) for a reason. the number of Watts coming out of the engine is too high- even if it does not upset the fuel, the metal of the engine will over-expand. Some form of EGT restriction is needed. Making an engine richer than 11's, 10:1 9:1 7:1 is not a viable solution. We want the a/f near 14 if possible. it just isn't possible usually because it would upset the nature/reaction of the fuel. You are thinking from the fuel end, which is fine, but all fuels, and especially 93 octane, have cooling limitations. Water is better to add as low temp liquid when temps are above its boiling point because of the phase change potential. I could take an 11.8:1, add some water and potentially be near 13-14 again some applications. Depends on compression, and rate of compression, heat transfer properties of the materials surrounding the area.
03-12-2018, 12:07 PM
#102
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Originally Posted by 1FastBrick
How many Watts are we talking???
Lol.
03-12-2018, 12:08 PM
#103
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Wattzat????
03-12-2018, 12:08 PM
#104
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Why not just spray water/meth in the headers?? That'll bring egt down 
03-12-2018, 12:33 PM
#106
I love this. Try to prove it. Nobody has, nobody can......
1. I made no mention of intercooling. Perhaps my example is non-intercooled, in which case the outlet temp of the compressor starts out around 200*F and disaster is sure to ensue on 93.
2. I made no mention of heat transfer rate from the exhaust system, my example could be fully insulated, retaining all temperature and causing a meltdown, even at low power levels.....
1. I made no mention of intercooling. Perhaps my example is non-intercooled, in which case the outlet temp of the compressor starts out around 200*F and disaster is sure to ensue on 93.
2. I made no mention of heat transfer rate from the exhaust system, my example could be fully insulated, retaining all temperature and causing a meltdown, even at low power levels.....
You yourself admit that FL weather is brutal and yet you want to make an argument about "no mention of intercooling".
Stay in school and perhaps take a logic or argument class on how to properly defend a stance. Your mind would likely explode if we went on about how on a forged motor you can make 800whp on 93 octane only no meth/water injection.
03-12-2018, 01:15 PM
#107
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Originally Posted by 1FastBrick
Damn... I was hoping I could attain at least 1.21 jigawatts for my Delorean swap... 
03-12-2018, 03:10 PM
#108
By your own argument....The rest of us were referring to an intercooled setup and non-insulated exhaust system, which is see on >95% or better of street built turbocharged setups.
You yourself admit that FL weather is brutal and yet you want to make an argument about "no mention of intercooling". Stay in school and perhaps take a logic or argument class on how to properly defend a stance. Your mind would likely explode if we went on about how on a forged motor you can make 800whp on 93 octane only no meth/water injection.
You yourself admit that FL weather is brutal and yet you want to make an argument about "no mention of intercooling".
Stay in school and perhaps take a logic or argument class on how to properly defend a stance. Your mind would likely explode if we went on about how on a forged motor you can make 800whp on 93 octane only no meth/water injection.You came into this thread with:
which portrays a holier than thou approach, it insinuates that one might one day become as godly computer tuner as you are, and be able to tune any LS engine in any configuration on 93 octane with no consequences.
You are giving the image to novices that they can pick up a computer and with expert keystrokes tune 'everything' because tuning is everything.
When in fact it is clearly not everything.
You can't tune your way out of every situation, it isn't everything.
The main problem here is lack of imagination. There are plenty of scenarios where tuning won't be everything. Lets try a few:
1. wrong injectors in the engine
2. incorrect gasket matching
3. poor assembly / parts matching
4. configurations which retain heat
5. displacement too low for the weight of the vehicle/gearing
6. tires fell off the car
7. add your favorite
If some guy tells me "tuning is everything" I might connect my compressor directly to the engine and try 18psi on a stock engine. You going to assume intercooling, meth, etc.. Then say "Assumptions: Intercooler efficiency 76%" and then give the math if possible that corrects IAT based on resistance, since boost pressure measured at the compressor is always higher than when it finally reaches the engine, even without an intercooler. meow
03-12-2018, 04:18 PM
#109
dont even try it.
You came into this thread with:
which portrays a holier than thou approach, it insinuates that one might one day become as godly computer tuner as you are, and be able to tune any LS engine in any configuration on 93 octane with no consequences.
You are giving the image to novices that they can pick up a computer and with expert keystrokes tune 'everything' because tuning is everything.
When in fact it is clearly not everything.
You can't tune your way out of every situation, it isn't everything.
The main problem here is lack of imagination. There are plenty of scenarios where tuning won't be everything. Lets try a few:
1. wrong injectors in the engine
2. incorrect gasket matching
3. poor assembly / parts matching
4. configurations which retain heat
5. displacement too low for the weight of the vehicle/gearing
6. tires fell off the car
7. add your favorite
If some guy tells me "tuning is everything" I might connect my compressor directly to the engine and try 18psi on a stock engine. You going to assume intercooling, meth, etc.. Then say "Assumptions: Intercooler efficiency 76%" and then give the math if possible that corrects IAT based on resistance, since boost pressure measured at the compressor is always higher than when it finally reaches the engine, even without an intercooler. meow
You came into this thread with:
which portrays a holier than thou approach, it insinuates that one might one day become as godly computer tuner as you are, and be able to tune any LS engine in any configuration on 93 octane with no consequences.
You are giving the image to novices that they can pick up a computer and with expert keystrokes tune 'everything' because tuning is everything.
When in fact it is clearly not everything.
You can't tune your way out of every situation, it isn't everything.
The main problem here is lack of imagination. There are plenty of scenarios where tuning won't be everything. Lets try a few:
1. wrong injectors in the engine
2. incorrect gasket matching
3. poor assembly / parts matching
4. configurations which retain heat
5. displacement too low for the weight of the vehicle/gearing
6. tires fell off the car
7. add your favorite
If some guy tells me "tuning is everything" I might connect my compressor directly to the engine and try 18psi on a stock engine. You going to assume intercooling, meth, etc.. Then say "Assumptions: Intercooler efficiency 76%" and then give the math if possible that corrects IAT based on resistance, since boost pressure measured at the compressor is always higher than when it finally reaches the engine, even without an intercooler. meow
You do more than enough.
03-13-2018, 07:47 AM
#111
dont even try it.
You came into this thread with:
which portrays a holier than thou approach, it insinuates that one might one day become as godly computer tuner as you are, and be able to tune any LS engine in any configuration on 93 octane with no consequences.
You are giving the image to novices that they can pick up a computer and with expert keystrokes tune 'everything' because tuning is everything.
When in fact it is clearly not everything.
You can't tune your way out of every situation, it isn't everything.
The main problem here is lack of imagination. There are plenty of scenarios where tuning won't be everything. Lets try a few:
1. wrong injectors in the engine
2. incorrect gasket matching
3. poor assembly / parts matching
4. configurations which retain heat
5. displacement too low for the weight of the vehicle/gearing
6. tires fell off the car
7. add your favorite
If some guy tells me "tuning is everything" I might connect my compressor directly to the engine and try 18psi on a stock engine. You going to assume intercooling, meth, etc.. Then say "Assumptions: Intercooler efficiency 76%" and then give the math if possible that corrects IAT based on resistance, since boost pressure measured at the compressor is always higher than when it finally reaches the engine, even without an intercooler. meow
You came into this thread with:
which portrays a holier than thou approach, it insinuates that one might one day become as godly computer tuner as you are, and be able to tune any LS engine in any configuration on 93 octane with no consequences.
You are giving the image to novices that they can pick up a computer and with expert keystrokes tune 'everything' because tuning is everything.
When in fact it is clearly not everything.
You can't tune your way out of every situation, it isn't everything.
The main problem here is lack of imagination. There are plenty of scenarios where tuning won't be everything. Lets try a few:
1. wrong injectors in the engine
2. incorrect gasket matching
3. poor assembly / parts matching
4. configurations which retain heat
5. displacement too low for the weight of the vehicle/gearing
6. tires fell off the car
7. add your favorite
If some guy tells me "tuning is everything" I might connect my compressor directly to the engine and try 18psi on a stock engine. You going to assume intercooling, meth, etc.. Then say "Assumptions: Intercooler efficiency 76%" and then give the math if possible that corrects IAT based on resistance, since boost pressure measured at the compressor is always higher than when it finally reaches the engine, even without an intercooler. meow
By this what I'm stating is by the advice given we can assume the basics have been covered, injectors especially... This is more so a discussion about the integrity of a stock LQ4 block versus a forged block and is forged really necessary given the same boost configuration (which arguably the injectors would assumed to be apart of that configuration setup.)
...Just let it go and relax man...
We all have times where we're wrong but you're really grasping for straws at this point.
Last edited by Need4Camaro; 03-13-2018 at 07:53 AM.
03-13-2018, 09:01 AM
#112
When someone says "It's all in the tune", they are assuming the motor wasn't built by a clueless person with the wrong injectors, gaskets, improper assembly, etc.
In this case, yes, its all in the tune.
Time for a
here.
In this case, yes, its all in the tune.
Time for a
here. 
