building a 6.8 ltr v12
#104
Join Date: Jul 2010
Location: Austin tx and Daytona FL.
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cal its nice to see that you finally are becoming more aware of Forced induction!
my dad was no great car mechanic, but he said to me, back in 1952, that the best way to make engines make more power, you have to have some pressure in the inlet manifold!
as you know,by now, most modern cars are using some sort of forced induction.
a pressurized inlet system becomes less prone to problems of twists and turns,or humps and bumps in the manifolding and piping.
recent tests show that the velocity in the inlet ports actually slows DOWN when measured with very accurate testing equipment, as the boost pressure increases!!
HUH! what you say, guy says simple, the air DENSITY increases and becomes heavier so less speed but far more weight of Oxygen in the flow, and as you should know, its the oxygen content of the air is what we are looking for more power!
ALAH! NOX Nitrous, or forced induce, or the magic of Nitromethane, which carries its own Oxygen that is released when combustion occurs!
when done properly, makes a 100hp engine make 1000hp, LOL,LOL.
be OK for you, seeing as reliability is no problem for you!
my dad was no great car mechanic, but he said to me, back in 1952, that the best way to make engines make more power, you have to have some pressure in the inlet manifold!
as you know,by now, most modern cars are using some sort of forced induction.
a pressurized inlet system becomes less prone to problems of twists and turns,or humps and bumps in the manifolding and piping.
recent tests show that the velocity in the inlet ports actually slows DOWN when measured with very accurate testing equipment, as the boost pressure increases!!
HUH! what you say, guy says simple, the air DENSITY increases and becomes heavier so less speed but far more weight of Oxygen in the flow, and as you should know, its the oxygen content of the air is what we are looking for more power!
ALAH! NOX Nitrous, or forced induce, or the magic of Nitromethane, which carries its own Oxygen that is released when combustion occurs!
when done properly, makes a 100hp engine make 1000hp, LOL,LOL.
be OK for you, seeing as reliability is no problem for you!
#105
#106
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that is the exact fear i have calvin ive been doing a bit of reaserch(ok alot shoot me) i guess there are a few gadgets out there that hold air and release it when your coming off from low rpm it supplies the motor 5psi too get things rolling again. by the way i apologize for thread hijacking you earlier haha that was not my intention.
#107
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A properly engineered turbo installation is not all top end power with nothing down low. I drove a 2L Audi A4 a couple of months ago and it performed like a larger engine. It would pull up a steep hill loaded with gear and 2 people in top gear. Very impressive.
The problem is using a turbo that is too large and/or too low CR. Sizing correctly is the key. I think a 6.xL V12 with 9:1 CR and a turbo with low boost would be a great road car.
I did once have a turbo Nissan 3.0L I6 that ran 22psi of boost and it was as you described with no low down grunt. My last turbo car was a Subaru WRX and it was a great car with good low down torque (from a 2.0L), smaller turbo made a difference.
The problem is using a turbo that is too large and/or too low CR. Sizing correctly is the key. I think a 6.xL V12 with 9:1 CR and a turbo with low boost would be a great road car.
I did once have a turbo Nissan 3.0L I6 that ran 22psi of boost and it was as you described with no low down grunt. My last turbo car was a Subaru WRX and it was a great car with good low down torque (from a 2.0L), smaller turbo made a difference.
#108
#109
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turbos are very hard to get right, and they do have a slower throttle response than an all motor, when trying to build a lot of power
my mother drives an Audi A4 s line with the 2.0 and it doesn't have the lag but it doesn't produce much more power, than the naturally aspirated version.
where as my best friends grand national has a 3.8 making 550 and it's got a lag that can rip your face off
my mother drives an Audi A4 s line with the 2.0 and it doesn't have the lag but it doesn't produce much more power, than the naturally aspirated version.
where as my best friends grand national has a 3.8 making 550 and it's got a lag that can rip your face off
#110
#112
#116
#119
#120
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Yes these things take time, but you have gotten off the bench race it to the nuts and bolts of the build.
I'm really happy with my 4.0 but I do have to admit that se of the horses have left the barn and it makes me miss my Modified Volvo and want more power.