VWDiesel.net The IDI, TDI, and mTDI source.
Engine Specific Info and Questions => TDI Engine -General Info => Topic started by: Sierra94 on April 17, 2012, 12:15:57 pm
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Hi!
I´m about to buy a nearly unused KKK Bv50. The seller wants $150 for it, but I´m not sure it will spool up ok on my engine.
It came from a Audi 3.0 Tdi.
Whats your opinion? Will it work? I run a 12mm IP head and the engine works great now with a T3, but has some lag.
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The bv50 I think is very similar to the gtb2260 in size iirc. If that's the case then it won't be an issue. It should spool up faster than the t3 and way more efficient in the top end. You won't regret it. Just make sure your nozzles are big enough. Bosio race 520's would be my choice but if money is an issue, try the .216 nozzles from veg injection. The quality is great for the price and they are actually bigger than .216.
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I ended up installing a brand new GT18V instead. I run the vanes fully opened up right now but it stills spools quicker than the T3 but maxes out at 1.8 bar (26 psi) Still with lots of black smoke and the fuel screw set very low ;D
So next project will be a 2256 from an Audi or a 2556 from a BMW X5 3.0D. Should have more top end power.
Also installing a FMIC in the near future.
(http://www1.garaget.org/archive/64/63772/81419/81419-2779258.jpg)
(http://www1.garaget.org/archive/64/63772/81419/81419-2779262.jpg)
And an outside view :)
(http://www1.garaget.org/archive/64/63772/81419/81419-1835733.jpg)
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Why wouldn't you run a vane control before doing another turbo swap? You would be able to get faster spooling along with an efficient higher max boost.
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Why wouldn't you run a vane control before doing another turbo swap? You would be able to get faster spooling along with an efficient higher max boost.
coming from someone who ran open vanes for a VERY long time, it is WORTH it to control your vanes.
i just installed a GTB2056V on my 1.6D, and it spools as fast as a stock turbo with the vanes hooked up.
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How will I get a more efficient HIGHER max boost with the vanes already at the most open position?
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How will I get a more efficient HIGHER max boost with the vanes already at the most open position?
you gotta close the vanes down a bit to get more boost..
but closing the vanes cuts the efficiency of the turbo..
26psi out of a GT18v is probably at about the top end of its efficiency spectrum anyways..
you need to either hook up a wastegate can up to operate your vanes, or go with a full manual control..
heres something else to look at:
my vnt20 (considerably bigger than your 18) absolutely WILL NOT SPOOL without the vanes operating. if the vanes are stuck open, the turbo will NOT boost.
but, with the vanes operational, it spools QUICK, and makes good boost till the wastegate can opens the vanes.
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Ok. I will build a controller with cables and a wastegate can etc in the near future.
I think with a 12 mm head I have enought exhaust/heat to spool even a VNT20 with vanes almost fully open. But I´ll try a controller first
and the go for a bigger vnt.
Thanks for the input ;)
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using a VNT20 myself, and have a thread on how to operate the vanes using throttle position and boost, you're welcome to use it
I suspect we'll have similar engine setups. oh and i love your truck dude!
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Thanks ;)
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Water injection, too... :D What kind of setup are you running, & how do you like it?
I have a Snow Performance system, not installed yet.
How long does it take you to run through a tank of fluid?
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A devils own system, with a 5 gph nozzle. Starts injecton at 0.9 bar boost pressure. My tank holds almost 2 gallons. The system only inject when I´m hard on the go pedal. Not during normal freeway cruising and town driving. So the fluid holds up pretty good.
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Nice. I'm thinking about a tiny (0.5gph) nozzle pre-turbo, then a 4 or 5 at the manifold. I'll be getting my nozzles and mounts from Devil's... I got the pump and computer used on Ebay. ;)
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Why a nozzle pre-turbo? They only produce alot of moisture in the intercooler. Especially if you have highly placed inlet/outlets on the IC.
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see my sig for a standalone VGT & LDA controller
http://dmn.kuulalaakeri.org/vnt-lda/
8x8 map for VNT & LDA control
Use N75 solenoid based actuators
Live configuration via USB interface and graphical map editor (no special software needed)
Two VNT control modes:
* Duty Cycle map - Uses RPM/TPS info to set VNT actuator position. Additional dampening can be added to improve engine response. No map sensor needed for this setup.
* Target Pressure map - Specify requested pressure value on each control point. Vnt-lda will automatically move actuator until required pressure level is reached.
LDA table can be used to fine tune soot emissions and torque limiting on certain RPM-range.
Cheap and free :-)
* RPM Engine speed sensor, use Honeywell GT101DC or alternator W-output as a source.
* TPS Throttle position sensor (like Bosch "001")
* MAP Manifold absolute pressure sensor for detecting amount of boost, for example 4bar Freescale MPX6400
* Arduino AVR-microcontroller board, servos, n75 (or similiar) solenoid & vacuum actuators
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Nice. I'm thinking about a tiny (0.5gph) nozzle pre-turbo, then a 4 or 5 at the manifold. I'll be getting my nozzles and mounts from Devil's... I got the pump and computer used on Ebay. ;)
Why a nozzle pre-turbo? They only produce alot of moisture in the intercooler. Especially if you have highly placed inlet/outlets on the IC.
usually when you shoot meth to the INLET of a turbo, its because you are not running an intercooler..
if you have an intercooler, then shoot the meth in the intake stream AFTER it. it doesnt matter if its only 1" after it, but you gotta go after the cooler. otherwise the meth will condense in the intercooler, and un-mix with the air.
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Ok. I will build a controller with cables and a wastegate can etc in the near future.
I think with a 12 mm head I have enought exhaust/heat to spool even a VNT20 with vanes almost fully open. But I´ll try a controller first
and the go for a bigger vnt.
Thanks for the input ;)
i dont mean to be a debbie downer, but that GT18 vnt you got, is relatively small compared to a VNT20.. if you can make 26psi with the vanes open, then its a LITTLE turbo. its closer in size to a VNT15 than a VNT20..
i have a VNT20, and it plain WONT SPOOL with the vanes open.. you need LOTS of heat and air to spool a VNT20 with the vanes open.
ive got a 9mm pump cranked up basically as high as it will go, so i have plenty of fueling.. and when my vane controller came off the vane linkage, and stuck them open, i thought i had cracked the manifold. the turbo was LOUD, smokey, and didnt even make a hint of turbine sound.
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Well, since it´s called GT18 it should be bigger than a VNT17 ;D And a 12mm rotor puts out atleast 100% (if not more) more fuel than a 9mm one.
But this is the first vnt I´ve tried. But surely not the last.
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Well, since it´s called GT18 it should be bigger than a VNT17 ;D And a 12mm rotor puts out atleast 100% (if not more) more fuel than a 9mm one.
But this is the first vnt I´ve tried. But surely not the last.
12mm pump is HUGE on a VW diesel..
hope you got a pyrometer, and enough boost to burn all that fuel..
why do you feel the need to run a 12mm pump? there aint many people on the forum running one that big. they are usually reserved for the hottest of hotrod engines.. i wouldnt even consider running that on an engine that wasnt fully modified in basically every aspect..
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I got egt gauge, water/meth injection, .216 bio nozzles etc.
The injection quantity of the 12 mm head made it pretty easy getting a really great working ip for a mtdi build. As I mentioned before I have lots of black smoke even at 30 psi so the fuel supply will never be a problem. Keeping the engine/turbo in one piece will be though ;D
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I got egt gauge, water/meth injection, .216 bio nozzles etc.
The injection quantity of the 12 mm head made it pretty easy getting a really great working ip for a mtdi build. As I mentioned before I have lots of black smoke even at 30 psi so the fuel supply will never be a problem. Keeping the engine/turbo in one piece will be though ;D
wait.. your TDI..
dur dee dur..
sorry dude, i forgot i wasnt in the IDI forums.. yea, 12mm on a TDI is fine. its like going to a 10mm on an IDI.
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;D
I actually ran 12mm on my old IDI aswell.