-8 feed/-6return--1000whp?
#1
10 Second Club
Thread Starter
iTrader: (27)
Join Date: Nov 2006
Location: Connecticut
Posts: 1,905
Likes: 0
Received 0 Likes
on
0 Posts
-8 feed/-6return--1000whp?
Im setting up my fuel system to support around 1000whp. I have the magnafuel 625pump, aeromotive 13109 and LS1 speed rails. Will a -8 feet/-6 return be enough to support my goal of 1000whp?
#4
TECH Apprentice
iTrader: (16)
Join Date: Feb 2008
Location: Fort Wayne, IN
Posts: 363
Likes: 0
Received 0 Likes
on
0 Posts
I'm running twin in-tank modified Denso Supra pumps (390LPH each), -10 feed, Summit fuel rails, -8 crossover, Mallory boost referenced FPR, and -8 return. I wanted to leave some room to grow if I switched to e85 or an LSx block in the future.
#5
10 Second Club
Thread Starter
iTrader: (27)
Join Date: Nov 2006
Location: Connecticut
Posts: 1,905
Likes: 0
Received 0 Likes
on
0 Posts
Does anyone know if the Ford MS 80# SD injectors with the EV6 connectors fit the factor LS2 intake/rail setup?They look longer in the pictures than my stock injectors. I have speed inc rails with the stock manifold. Thanks.
#6
Coal Mining Director
iTrader: (17)
Join Date: Nov 2001
Location: Virginia
Posts: 4,442
Likes: 0
Received 0 Likes
on
0 Posts
At 58psi it's wayyy big enough. Biggest design concern is a good regulator that will control prssure but not become too much of a restriction at those power levels. Weldon is one good choice.
Trending Topics
#9
Coal Mining Director
iTrader: (17)
Join Date: Nov 2001
Location: Virginia
Posts: 4,442
Likes: 0
Received 0 Likes
on
0 Posts
I don't have any opinions good or bad about Aeromotive. The higher the hp the better the regulator should be becuse you are returning a large volume of fuel back to the tank due to the dual pumps or single pump in the tank required to flow a great volume. Some regulators have a small return orifice size that can become a problem if they are not sized for big hp. (+1000rwhp is pretty big).
#10
10 Second Club
Thread Starter
iTrader: (27)
Join Date: Nov 2006
Location: Connecticut
Posts: 1,905
Likes: 0
Received 0 Likes
on
0 Posts
Well the Aeromotive has a -6 in/out setup. And since the return line is going to be a -6 id assume it would be good enough? I know the manufacturer of the twin 255 drop in bucket recommends using a -8 feed -6 return with this regulator...since the magnafuel will be feeding the engine with a -8 the same should apply no?
#13
I've seen problems with the fuel getting hot when on long trips with a large fuel pump, it seems to help when making the return line at least as large as the feed line. Bob
#17
Coal Mining Director
iTrader: (17)
Join Date: Nov 2001
Location: Virginia
Posts: 4,442
Likes: 0
Received 0 Likes
on
0 Posts
That's why I run 2 Bosch pumps. Just run one on the street and both on the track. Pressure/volume/engine heat makes the heat. If I run one pump, the gas tank stays cool. If I run both pumps and a small amount of fuel...you can feel the tank heating up since you are recirculating the fuel too much. If I ran a single large pump, I would run a full tank all the time on the street to dilute the heat and keep the fuel cycle down. Big difference in 15 gallons vs 5 gallons in cycle heat.
Pressure rise is coming from the regulator....not the return line....unless it's a carb system at 6psi.
The AN inlet/outlet on a regulator is not the restriction to worry about...it's the design orifice inside the regulator....make sure the regulator is designed for the amount of fuel you plan to flow through it.
Pressure rise is coming from the regulator....not the return line....unless it's a carb system at 6psi.
The AN inlet/outlet on a regulator is not the restriction to worry about...it's the design orifice inside the regulator....make sure the regulator is designed for the amount of fuel you plan to flow through it.
#20
10 Second Club
Thread Starter
iTrader: (27)
Join Date: Nov 2006
Location: Connecticut
Posts: 1,905
Likes: 0
Received 0 Likes
on
0 Posts
Well right now my goals are ultimately 650-850whp on the street and maybe somewhere down the road shoot for that magical number.... I want to do a -10 to the pump then -8 to the rails then -6 back but I don't think Im going to be able to fit the -10 anywhere...the pump already has to sit half way up under my driver seat on the frail "rail"