Need Turbo System Design Info
06-16-2003, 06:39 AM
#1
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Join Date: Oct 2001
Location: Westminster, MD
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Hey guys, I’ve got a few questions for ya just in case I wanted to play with one of these turbos. Since I have removed the battery from the engine bay, I have a little more room and could possibly install a single turbo after I wrap up some unfinished work. Hey, it’s a never-ending project….
1) I will need to fab my own “header” with turbo flange. How long can the exhaust “Header” be before it mounts to the turbo. Will longer pipes cause more lag or a reduced response? If I remeber from pics, Vosko's car had the turbo mounts some distance from the exhaust port. What size tubes – 2” for each rotor?
2) I’m looking for a very fast spooling turbo that will run out to 8000 rpm on a street ported 6 port 13B (high compression). I need torque and power from 3000rpm on up. Hp gains of 75Hp would be my goal. I’m running a N/A trans and GSL-SE rear and want to keep it under 300Hp to keep them alive. Any ideas?
3) Can you split the exhaust after it leaves the turbo into 2 different pipes?
4) I am very limited for intercooler space, so I need a very compact and efficient IC.
1) I will need to fab my own “header” with turbo flange. How long can the exhaust “Header” be before it mounts to the turbo. Will longer pipes cause more lag or a reduced response? If I remeber from pics, Vosko's car had the turbo mounts some distance from the exhaust port. What size tubes – 2” for each rotor?
2) I’m looking for a very fast spooling turbo that will run out to 8000 rpm on a street ported 6 port 13B (high compression). I need torque and power from 3000rpm on up. Hp gains of 75Hp would be my goal. I’m running a N/A trans and GSL-SE rear and want to keep it under 300Hp to keep them alive. Any ideas?
3) Can you split the exhaust after it leaves the turbo into 2 different pipes?
4) I am very limited for intercooler space, so I need a very compact and efficient IC.
06-16-2003, 09:07 AM
#3
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Join Date: Oct 2001
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Originally Posted by 93 R1' date='Jun 16 2003, 08:11 AM
Run methanol then you don't need an intercooler
Stinking rules alway screwing up my plans, who need rules!
H2O injection would work, but I want something that I can run for hours on end without having top fill up a water tank. This is what I'm planning to do in 2004 if I can get my $hit together -
Targa Newfoundland
06-16-2003, 10:39 AM
#4
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Join Date: May 2002
Location: California
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1. there is a length range that works best, the pulses need some length of tubing before they hit the turbo. the length of tubes depend on the porting, like an na header, but picture a turbo instead of a collector.
2. i was thinking gt3540 for mine, its quick spooling seems like it would be perfect for the street
3. yes
4. water to air?
mike
2. i was thinking gt3540 for mine, its quick spooling seems like it would be perfect for the street
3. yes
4. water to air?
mike
06-16-2003, 12:16 PM
#5
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Location: Westminster, MD
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1) I wonder what that magic length would be? The only place for me to fit the turbo would be on top of the trans bell housing over the clutch and gearbox. I need to measure, but I'd guess at 24 - 28"
2) thanks
3) OK. I would have to split them within a few inches of the turbo to allow two 2" pipes to run down the side of the trans and back. 3" tube will not fit
4) Water to air would make me have to mount a seperate water pump and radiator for that system. I was thinking about a compact air-to-air IC. How much boost do you think I'd need to reach a gain of 75hp and what size IC would work with that boost level?
Oh, almost forgot.... Is there any preferd way to mount the turbo? Should it's shaft run front to back, or left to right? I'm wondering if side loads will wear the bearings faster than acceleration loads, or am I just off in la la land.
B.
2) thanks
3) OK. I would have to split them within a few inches of the turbo to allow two 2" pipes to run down the side of the trans and back. 3" tube will not fit
4) Water to air would make me have to mount a seperate water pump and radiator for that system. I was thinking about a compact air-to-air IC. How much boost do you think I'd need to reach a gain of 75hp and what size IC would work with that boost level?
Oh, almost forgot.... Is there any preferd way to mount the turbo? Should it's shaft run front to back, or left to right? I'm wondering if side loads will wear the bearings faster than acceleration loads, or am I just off in la la land.
B.
06-16-2003, 12:23 PM
#6
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Join Date: May 2002
Location: California
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Originally Posted by RX-Midget' date='Jun 16 2003, 09:16 AM
1) I wonder what that magic length would be? The only place for me to fit the turbo would be on top of the trans bell housing over the clutch and gearbox. I need to measure, but I'd guess at 24 - 28"
2) thanks
3) OK. I would have to split them within a few inches of the turbo to allow two 2" pipes to run down the side of the trans and back. 3" tube will not fit
4) Water to air would make me have to mount a seperate water pump and radiator for that system. I was thinking about a compact air-to-air IC. How much boost do you think I'd need to reach a gain of 75hp and what size IC would work with that boost level?
Oh, almost forgot.... Is there any preferd way to mount the turbo? Should it's shaft run front to back, or left to right? I'm wondering if side loads will wear the bearings faster than acceleration loads, or am I just off in la la land.
B.
2) thanks
3) OK. I would have to split them within a few inches of the turbo to allow two 2" pipes to run down the side of the trans and back. 3" tube will not fit
4) Water to air would make me have to mount a seperate water pump and radiator for that system. I was thinking about a compact air-to-air IC. How much boost do you think I'd need to reach a gain of 75hp and what size IC would work with that boost level?
Oh, almost forgot.... Is there any preferd way to mount the turbo? Should it's shaft run front to back, or left to right? I'm wondering if side loads will wear the bearings faster than acceleration loads, or am I just off in la la land.
B.
3. its prolly not the best way, but it wont kill you, and if ou need the room...
4. maybe an fc ic? they work pretty well if you can get air to them
the oil drain has to be at the bottom, as far as i know thats the only limitation
mike
06-16-2003, 06:46 PM
#7
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Location: Maryland
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You can have my stock intercooler if you want it. Probably not the best but it should work. I think most people use 1 1/2 inch to 1 7/8 tubing for the mainfold you should be fine with the smaller of the two I would think.
An air 2 water setup isn't really that bad of an idea. I was actually thinking of this for my car but I just love the look of the front mount too much
As far as a turbo I would think a T04e or even a little smaller would be perfect. They are pretty cheap too.
An air 2 water setup isn't really that bad of an idea. I was actually thinking of this for my car but I just love the look of the front mount too much
As far as a turbo I would think a T04e or even a little smaller would be perfect. They are pretty cheap too.
06-17-2003, 08:48 AM
#9
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Join Date: Oct 2001
Location: Westminster, MD
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J. - Thanks for the offer! Any idea what size the stock IC is?
I was also thinking that a smaller turbo would be cheaper and easier to find and do what I want.
I just remembered a C02 I/C that I saw at Carlisle. They use a CO2 tank to cool a I/C that was inline with the rest of the turbo plumbing. It was cold enough to have a thick layer of frost on it. hummmmm...... Maybe good for drag, but the CO2 will run out sometime.
I'll have to look into the size of a water-air system.
I was also thinking that a smaller turbo would be cheaper and easier to find and do what I want.
I just remembered a C02 I/C that I saw at Carlisle. They use a CO2 tank to cool a I/C that was inline with the rest of the turbo plumbing. It was cold enough to have a thick layer of frost on it. hummmmm...... Maybe good for drag, but the CO2 will run out sometime.
I'll have to look into the size of a water-air system.
06-18-2003, 04:19 PM
#10
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Join Date: Oct 2002
Location: Rockville, Maryland
Posts: 144
Brian,
Since your overall power goals aren't that high and you want GOOD response, you're going to need a turbo that would be considered "too small" by most people. I think you should check out my dyno page to see how different turbos do on 13Bs at http://www.catenet.net/dyno.php
Your exhaust A/R is going to be pretty small to get the response you want... I'd say .86 or maybe smaller. (?) Perhaps you should consider an 89+ TII turbo? They put out 200 hp at the engine stock running only something like 8 pounds. You'll have the advantage of an open exhaust and intake and will be able to make more power than that even at the stock boost levels. They spool up pretty well too actually. They also have the advantage of using an internal wastegate. This would save you a bunch of space in your tight engine bay. The biggest plus is that you might find one on a car being parted out or something and get it for cheap!
Brian
Since your overall power goals aren't that high and you want GOOD response, you're going to need a turbo that would be considered "too small" by most people.
Your exhaust A/R is going to be pretty small to get the response you want... I'd say .86 or maybe smaller. (?) Perhaps you should consider an 89+ TII turbo? They put out 200 hp at the engine stock running only something like 8 pounds. You'll have the advantage of an open exhaust and intake and will be able to make more power than that even at the stock boost levels. They spool up pretty well too actually. They also have the advantage of using an internal wastegate. This would save you a bunch of space in your tight engine bay. The biggest plus is that you might find one on a car being parted out or something and get it for cheap!
Brian
