Run fuel rails in parallel or series?
05-20-2008, 10:26 PM
#21
on tech i seen a thread where it didnt make much difference. run in back of passenger rail go to front crossover then down the driverside with regulator in rear. this way you are going with angle of injectors for fuel and its been proven to work over 1k rwhp without issues. no reason to make things more complicated then they have to be not to mention little more expensive then need to be
I plan to upgrade later to one of the designs I have been thinking about below:
Return System - Use a boost referenced regulator (return system) so I can adjust the pressure to compensate for the boost pressure at the head of the injectors. Designing a system so that I can make a custom y-block with -8 inlet and -6 return feeding dual -6 to the fuel rails. It will be an easy conversion from where it is now.
Returnless - Integrate a second fuel bucket that will kick on at a certain boost level with a switch. The y-block would then become an x-block so the 2 pumps and 2 fuel rail lines would join at this point. This would retain the returnless and use 2 pumps to feed the rails. This would almost double the volume output when both pumps are running.
Last edited by leftcoast32; 05-20-2008 at 10:42 PM.
05-21-2008, 06:01 AM
#22
Not speaking from experience but at some point in your feed line there is a split unless your running two pumps in the tank correct? There will be a split somewhere to feed both rails.
Does the placement or closeness to the rails in relation to the split even matter as long as it's not a sharp bend to feed one rail compared to the other? Fluid under pressure by nature will follow the path of least resistance to a point, once the lines and rails are under pressure I can't see how it would matter. At the HP levels being run on some of our trucks maybe it comes into play??
Then again I did not just smoke my forged engine either so I would probably do anything and everything to stop that from happening again.
Looks like you are covering all the bases Thunder550.
Does the placement or closeness to the rails in relation to the split even matter as long as it's not a sharp bend to feed one rail compared to the other? Fluid under pressure by nature will follow the path of least resistance to a point, once the lines and rails are under pressure I can't see how it would matter. At the HP levels being run on some of our trucks maybe it comes into play??
Then again I did not just smoke my forged engine either so I would probably do anything and everything to stop that from happening again.
Looks like you are covering all the bases Thunder550.
Last edited by TG02Z71; 05-21-2008 at 08:06 PM.
05-21-2008, 08:09 AM
#23
Not speaking from experience but at some point in your feed line there is a split unless your running two pumps in the tank correct? There will be a split somewhere to feed both rails.
Does the placement or closeness to the rails in relation to the split even matter as long as it's not a sharp bend to feed one rail compared to the other? Fluid under pressure by nature will follow the path of least resistance to a point, once the lines and rails are under pressure I can't see how it would matter. At the HPO levels being run on some of our trucks maybe it comes into play??
Than again I did not just smoke my forged engine either so I would probably do anything and everything to stop that from happening again.
Looks like you are covering all the bases Thunder550.
Does the placement or closeness to the rails in relation to the split even matter as long as it's not a sharp bend to feed one rail compared to the other? Fluid under pressure by nature will follow the path of least resistance to a point, once the lines and rails are under pressure I can't see how it would matter. At the HPO levels being run on some of our trucks maybe it comes into play??
Than again I did not just smoke my forged engine either so I would probably do anything and everything to stop that from happening again.
Looks like you are covering all the bases Thunder550.
05-21-2008, 10:07 AM
#24
I ordered parts yesterday for a -8 feed line into a Y, then equal length to both fuel rails. I'm going to feed from the rear, and put the regulator/return line in the front. Rails will be in parallel, rather than series.
My restriction currently is going to be where the two in-tank pumps merge into the same line in the tank to come through the bulkhead of the pump bucket. I need to figure out how to get two small individual lines out of the bucket, or how to get a single -8 line out of the bucket.
My restriction currently is going to be where the two in-tank pumps merge into the same line in the tank to come through the bulkhead of the pump bucket. I need to figure out how to get two small individual lines out of the bucket, or how to get a single -8 line out of the bucket.
05-21-2008, 10:22 AM
#25
I ordered parts yesterday for a -8 feed line into a Y, then equal length to both fuel rails. I'm going to feed from the rear, and put the regulator/return line in the front. Rails will be in parallel, rather than series.
My restriction currently is going to be where the two in-tank pumps merge into the same line in the tank to come through the bulkhead of the pump bucket. I need to figure out how to get two small individual lines out of the bucket, or how to get a single -8 line out of the bucket.
My restriction currently is going to be where the two in-tank pumps merge into the same line in the tank to come through the bulkhead of the pump bucket. I need to figure out how to get two small individual lines out of the bucket, or how to get a single -8 line out of the bucket.
05-21-2008, 10:27 AM
#26
https://www.performancetrucks.net/fo...d.php?t=418256
05-21-2008, 08:03 PM
#27
So your saying your going to have two in tank pumps running two seperate lines out of the bulkhead into a Y fitting then split into two lines to each fuel rail?
If so why not just run two seperate lines one each to each fuel rail? Does the Y fitting equalize pressure or something?
Elighten me unless I have mis-understood.
Not sure but you may want to be careful what type of metal you put into the tank, some metals will corode under the environment of gasolie if not properly treated or coated.
Just want to be safe.
If so why not just run two seperate lines one each to each fuel rail? Does the Y fitting equalize pressure or something?
Elighten me unless I have mis-understood.
Not sure but you may want to be careful what type of metal you put into the tank, some metals will corode under the environment of gasolie if not properly treated or coated.
Just want to be safe.
