Turbo setup for Gen 2??
Senior Member
Joined: Oct 2002
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Ok i dont frequent this forum that often so thats the first time ive seen that twin supercharger. 
Uhhhh, instant woody. Is that your truck clonetek? If not whose is it and i wanna see more pics cause that is mad elite.
Uhhhh, instant woody. Is that your truck clonetek? If not whose is it and i wanna see more pics cause that is mad elite.
Senior Member
Joined: May 2002
Posts: 103
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From: San Antonio, Texas
I'm hi-jacking a thread... I'm a rebel!
Lightning Tuner,
While I agree that the EGT's will be lower at leaner A/F, I don't think that is really the reason why they do it. There are plenty of naturally aspirated diesel's around. The original driving force for a turbo was power, closely followed by power @ acceptable emissions. Without a turbo, the only way for power is displacement, and the engines were already big and heavy. As the the loads they carried went up and the desire to maintain acceptable acceleration, the power needed to increase. The only option was boost.
A naturally aspirated diesel will run down to around 16:1 A/F and its smoking pretty badly at this point. Bolting on a turbo to an equal displacement engine at around 18-20 psi of boost will more than double the power of the engine at a mere 20:1 or so and the particulate emissions will be much lower.
Now with EGR, the boost levels necessary for lots of EGR (>20% even at full load) with acceptable A/F, the engines will run well into the 30 psi range. I have run one recently with a VGT and saw greater than 45 psi of boost at 1500 and 1800 rpms. Now THAT is some boost.
Lightning Tuner,
While I agree that the EGT's will be lower at leaner A/F, I don't think that is really the reason why they do it. There are plenty of naturally aspirated diesel's around. The original driving force for a turbo was power, closely followed by power @ acceptable emissions. Without a turbo, the only way for power is displacement, and the engines were already big and heavy. As the the loads they carried went up and the desire to maintain acceptable acceleration, the power needed to increase. The only option was boost.
A naturally aspirated diesel will run down to around 16:1 A/F and its smoking pretty badly at this point. Bolting on a turbo to an equal displacement engine at around 18-20 psi of boost will more than double the power of the engine at a mere 20:1 or so and the particulate emissions will be much lower.
Now with EGR, the boost levels necessary for lots of EGR (>20% even at full load) with acceptable A/F, the engines will run well into the 30 psi range. I have run one recently with a VGT and saw greater than 45 psi of boost at 1500 and 1800 rpms. Now THAT is some boost.
Senior Member
Joined: Jun 2002
Posts: 1,207
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From: KANSAS CITY, KANSAS
I agree with the amount of fuel on the Diesel power..
YOu should see how high some of the boys back home have their tractors(not semis) turned up on the amount of diesel that gets in there.
When we are night farming you can see flames coming out the stacks!!!!
Cant do it on the John Deeres though..Guys that try it will blow the TURBOS right off of them..
CASE IH baby!! True Torque!!! A 300 hp tractor...= SICK TORQUE!!!!!!!
Farmboy!!
YOu should see how high some of the boys back home have their tractors(not semis) turned up on the amount of diesel that gets in there.
When we are night farming you can see flames coming out the stacks!!!!
Cant do it on the John Deeres though..Guys that try it will blow the TURBOS right off of them..
CASE IH baby!! True Torque!!! A 300 hp tractor...= SICK TORQUE!!!!!!!
Farmboy!!
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Joined: Jun 2002
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From: Huntington Beach/CA
Originally posted by cpeapea
how much boost does your standard tractor trailer turbo put out? also stillen(sp?) makes a supercharger for the nissan maxima, i believe that its a centrifugal
how much boost does your standard tractor trailer turbo put out? also stillen(sp?) makes a supercharger for the nissan maxima, i believe that its a centrifugal
Vortech makes Stillen's blower kit. Only good for about 40hp. Lame.
Turbo's make sick torque, on EVERYTHING!
As already covered by others, it takes hp to spin both a blower or turbo. Blowers are instant on, turbo's are delayed. However, with the new turbo's out today, turbo lag isnt even there.