Has anyone installed the Vargas shotgun yet?
- Thread starter AntoanS4
- Start date
Super thread. Rich with information, but prepare to spend 20 minutes reading the 10 pages. Some threadmarks would help.
On parts just a cliff note:
| Fuelab 6 micron filter | (to replace HPFP filter) Fuelab 81831-1 | http://www.jegs.com/i/Fuelab/083/81831-1/10002/-1 |
| Russell -6AN to 3/8 twist-loc | 2 connectors fuel filter to lines 624013 Twist-Lok Black 6-AN Straight Hose End | https://www.amazon.com/gp/product/B004BTB5XC/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1 |
This post talks about the install on my E89 Z4. https://bmw.spoolstreet.com/threads/e89-z4-atacama-yellow-build.3022/page-6#post-39766 ... not sure if someone has info on installs with other chassis cars.
Filippo
This is a big bummer that we cannot get the shotgun to fit the XI. I want to go to the MMP 1k Turbos. In California the visual emission inspections make me want to avoid anything that makes the car look modified. SO putting in a supplemental low pressure injector rail scares me.. and is way more complicated. I agree I spent a lot of time looking at my 335xi and with the current Vargas set up it would hit the steering rack. The subframe I think you have enough room.
one idea I had was if you could change the bracket to move the shotgun more forward to provide clearance. Then use some spacers or change the pully to have a lot of rear offset... to get the belt to line up. I dont think you would have enough room in front. The radiator may hit it.
Other idea would be to move the shotgun to the top of the engine... next to the Alternator. This would again require some serious re engineering of the Shotgun bracket.. and also makes it more obvious in an emissions inspection. ITs also not necessarily a violation to move your fuel pump...
The big bummer is you really need to experiment a lot to make this work. even have an engine out of the car...
I attached 2 pictures. It would seem possible to use the 2 Alternator mounting bolts to move the shot gun to the top of the engine line it up with the pulley. It would require you to move my current blow off valve.. and maybe the Cone intakes but it maybe possible. and the fuel lines may need some reworking. but I think you can fit the HPFP at the top.
one idea I had was if you could change the bracket to move the shotgun more forward to provide clearance. Then use some spacers or change the pully to have a lot of rear offset... to get the belt to line up. I dont think you would have enough room in front. The radiator may hit it.
Other idea would be to move the shotgun to the top of the engine... next to the Alternator. This would again require some serious re engineering of the Shotgun bracket.. and also makes it more obvious in an emissions inspection. ITs also not necessarily a violation to move your fuel pump...
The big bummer is you really need to experiment a lot to make this work. even have an engine out of the car...
I attached 2 pictures. It would seem possible to use the 2 Alternator mounting bolts to move the shot gun to the top of the engine line it up with the pulley. It would require you to move my current blow off valve.. and maybe the Cone intakes but it maybe possible. and the fuel lines may need some reworking. but I think you can fit the HPFP at the top.
What actually hits, the pump body or just the inlet to the pump.
Can the pump be installed at all without any attachments eg wiring or hoses ?
Can the pump be installed at all without any attachments eg wiring or hoses ?
Another interesting idea.... Maybe you could modify the alternator... so that the shaft goes all the way out the back and you can mount the shotgun on the back of the alternator. All it may require is taking apart the alternator and machining or welding an extension and hole bearing in the back of the housing. Or even build in a bearing to the front of the shotgun. I think you would have enough room to get the HPFP behind the alternator. Just thoughts.. Love to find a way to get this to work on the xdrive
Shafts as they get longer can have interesting vibration issues, especially when you drive things off the end of the shaft.
Filippo
Filippo
I agree.. but I think if you had a mount on the rear of the alternator.. that had a bearing inside it would limit strain and vibration. it may require a support bracket.. but that would not be hard as the head and the intake are there for a lot of places to put a support.
There is a much easier way to do this, electric pmw controlled electric motor strong enough to run this pump.
It would need another controller to run it that is rpm referenced.
Anything can be done but it would be rather costly.
Much easier and less expensive way would be get a syvecs and a s55 pump setup and two xdi pumps.
No matter what way you choose to reinvent this is going to be more expensive to develop it from scratch.
It would need another controller to run it that is rpm referenced.
Anything can be done but it would be rather costly.
Much easier and less expensive way would be get a syvecs and a s55 pump setup and two xdi pumps.
No matter what way you choose to reinvent this is going to be more expensive to develop it from scratch.
Try it, but you have to consider the alternator uses a special pulley, and the shotgun is over driven.
The other problem is the vibration on a long shaft ehich was mentioned. It's something that is already a concern I've been monitoring.
Ita been tried long time ago but the ecu flips out and takes massive dives in fuel pressure from what I remember.
The two pumps run at different speeds and so the signals from the fuel supply control valve are different thus confusing DME
That's not it dude, the electrical connector on the pump only controls the opening and closing of the pressure release valve and doesn't see any sort of pump speed.
I'm only guessing here but it must be due to the feedback coming from the opening and closing position of the valves and if one is ever so slightly out of synch from the other, the dme throws a wobbly.
It would be extremely hard for two solenoids than are pwm controlled to work of the same parallel circuit it confuses the system controlling it.
I'm only guessing here but it must be due to the feedback coming from the opening and closing position of the valves and if one is ever so slightly out of synch from the other, the dme throws a wobbly.
It would be extremely hard for two solenoids than are pwm controlled to work of the same parallel circuit it confuses the system controlling it.
Throws a wobbly, eh? Damn, we Americans have a hard time keeping up! lol
Filippo
Filippo
Pump speed dictates pressure. I don't see how the position of the valves would have anything to do with it but I would assume the high pressure switch in rail should correlate with the pressure in the HPFP control valve. Just a thought.
I dont know the exact science behind it.
What I mean by valves is the solonoid in the hpfp as its basically a valve
But the solonoid is not open and closed by voltage but by pwm so this is why the aic is used.
What I mean by valves is the solonoid in the hpfp as its basically a valve
But the solonoid is not open and closed by voltage but by pwm so this is why the aic is used.
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It would be nice to just run both pumps wiring in parallel off the DME but it doesn't work and tends to fry the controller. Try at your own risk.
Chris
Chris
If vortech was able to make a supercharger shaft the length of a motor (B16), an edge inch or so shouldn't introduce much vibration.
Comptech does the same for blowers on the J series motors
