Post Pics of your Fuel Rails!!!!!!
#82
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I am bringing this back to the top... I am looking for someones setup that I thought I saw in this thread but can not find it.
Does anyone have or seen a setup that has both rails plumed to go back to the regulator. I am posting a pic so you can kind of tell what I am talking about!
I am looking for someone elses setup, I think that they used a magnaflow Regulator. If you can post better pics I would really appreciate it
![](http://sincitygoats.com/gallery/d/7932-2/Jason_s+Turbo+%235.jpg)
Does anyone have or seen a setup that has both rails plumed to go back to the regulator. I am posting a pic so you can kind of tell what I am talking about!
I am looking for someone elses setup, I think that they used a magnaflow Regulator. If you can post better pics I would really appreciate it
![](http://sincitygoats.com/gallery/d/7932-2/Jason_s+Turbo+%235.jpg)
#83
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See I had heard the same thing. But after doing some research this morning I found Lonnies telling people to put it after the rails.
I can definently see the logic to this. If you think about it. If it is before the rails if you start using a lot of fuel you would have to refill the rails. I will use a damn as a metaphor. Think about it like that if the damn is closed it backs up the water. If your fuel rail is behind them it would work the same way right?
I can definently see the logic to this. If you think about it. If it is before the rails if you start using a lot of fuel you would have to refill the rails. I will use a damn as a metaphor. Think about it like that if the damn is closed it backs up the water. If your fuel rail is behind them it would work the same way right?
#84
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No, the regulator should be placed after the injectors. Doing it this way will provide full flow to the rails and injectors while bypassing unneeded fuel volume back to the tank. Putting the regulator in front of the rails will make the rails catch up during periods of high flow, causing more fluctuation in fuel pressure and volume. This will also cause high fuel temperatures and aeration to be worse due to the large amount of fuel constantly bypassed to the tank.
#89
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But it doesnt have to. If it did...how would the stock dead end system ever work with the reg in the tank ?
Plenty of people here run their regs mounted between the pumps, and the rails where it isnt a full flow system through the rails.
Some might even suggest that not passing fuel through the hot rails/engine compartment and back to the tank evry few seconds, is beneficial to fuel temperature.
#90
Kleeborp the Moderator™
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Well...that was the problem I found with the dead head system originally in my car. Fuel pressure would go from 58 down to 48-52 psi at WOT, and would visibly drop by just loading the engine up cruising down the interstate. My injector duty cycles were through the roof trying to compensate for the pressure loss...
If I'm not mistaken though, the manufacturers did it to help keep evaporative emissions down since you aren't returning hot fuel from the rails back to the tank.
Me, though...I'll keep my pressure steady, baby seals be damned.
If I'm not mistaken though, the manufacturers did it to help keep evaporative emissions down since you aren't returning hot fuel from the rails back to the tank.
Me, though...I'll keep my pressure steady, baby seals be damned.
#92
Kleeborp the Moderator™
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IMO, that is the inadequacy of having the regulator in the tank. If you are running one up by the rails, there is no reason to not have it after the rails.
Changing nothing else other than putting the reg. up front after the rails and removing the stock in-tank setup (still stock pump and hard lines) was enough to keep the pressure steady under high load, low RPM conditions, and only drop 2 psi at WOT.
Changing nothing else other than putting the reg. up front after the rails and removing the stock in-tank setup (still stock pump and hard lines) was enough to keep the pressure steady under high load, low RPM conditions, and only drop 2 psi at WOT.
#96
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See post 80 that is a after the rail setup.
This is almost a before the rail setup
http://i54.photobucket.com/albums/g9.../CPEngine6.jpg
This is almost a before the rail setup
http://i54.photobucket.com/albums/g9.../CPEngine6.jpg
Perhaps that's what you meant and I only misunderstood.