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  1. J

    Return Fuel System is a controller needed?

    You can aboslutely do it your self and run all your own fused power wires, relays, triggers, ground wires and switches etc. Controller is nice for convienence and ease of install and appeals to masses more who are often intimadted by wiring. I run a smaller pump as my always on pump for...
  2. J

    Go return style fuel system @ what HP?

    650rwhp is my threshold for returnless and e85. Starts becoming more work upgrading alot of stuff to safely and reliabley push past that with ethanol staying returnless.
  3. J

    Installing a return system and have a few ?????

    What kit? There is no "fuel" line going to the manifold, your likely looking a the evap purge line that sends fuel vapors from the tank into the manifold to be burned for emmissions. To answer your question is a seperate system than fuel supply for the rails/injectors and doesn't need to be...
  4. J

    How far would 60lb injectors get me on E85?

    There in lies the potential problem regardless of power. Injectors are static in that last 90-100% range (order to pulse comes before previsouly pulse closes so injector is basicly staying open causing increased flow variance from loss of pulse timing control, ie varaince in tolerances of the...
  5. J

    How far would 60lb injectors get me on E85?

    Like mentioned, factors like boost level and base pressure will play a big role in how far the injectors will get you. Maxing out injectors is a bigger concern then running out of pump imo, since when they are static flow varies more and you could be lean on a few cylinders even though overall...
  6. J

    Kenne bell dual boost pump vs walboro 465s

    No 465's are too big for two of them to be run properly in returnless ( I've tried), and its a lot of work don't really fit on the composite hats. The stock 13 gt500 fuel hat already has basicly dual 320lph pumps which is about the most you can get away with in returnless. FYI those 20v bap is...
  7. J

    Early death of a walbro

    That's what I do as well, I have a spare 465 in the garage but haven't had to replace anything in the past 4-5 years. I run a staggered setup so I only have one always on pump which is a smaller 340lph. And then my second pump is a 465lph that's on a hobbs so it only comes on in boost when I...
  8. J

    Early death of a walbro

    Sounds like it just got abused then, the pump motor is cooled as fuel passes through it and these are much hotter running pumps, two of the 465 pumps puts out something like 400-500 watts of heat so easily could have been damaged from running dry. On another note you may want the high pressure...
  9. J

    Early death of a walbro

    A lot of factors can play a role in the life of the pump(s). Could just be bad luck or flaw in the pump, but also you could post up the rest of your system and how it is setup to maybe identify a weak link in your setup. So stuff like base pressure, boost pressure and system restrictions...
  10. J

    how much will this fuel system support on E85

    Yes, make sure that wire is 8awg it should feed a relay first then 8awg out from relay to the bap. Relay trigger by the oem inertia wire to ground of course. Bap should be wired in post relay pre fpdm. If your running a single bap and single modified fpdm make sure its a 40amp bap and make sure...
  11. J

    how much will this fuel system support on E85

    -Make sure you run upgraded wiring to that setup, for twin GT pumps on a bap you will want a 8awg power wire. This is actually the most overlooked thing really, 10-15% drop in duty cycle for about $40 in wiring supplies is one of the best/cheapest thing you can do to help your fuel system. Run a...
  12. J

    Dual 465’s and E85

    Maxing injectors has a lot more factors than you would think ( type of power adder/bsfc, rpm range, fuel temperature, displacement, compression, ethanol percentage etc). One of the bigger factors often overlooked is boost level. If you running 20psi of boost to get 850rwhp you will have a lower...
  13. J

    Which pumps are the same size as the GT Supercar pumps?

    Most new e85 pumps (340's 400's etc) are slightly fatter so to answer your question only direct fit would be a gss (gerotor 255 walbro, which doesn't get you anymore flow. Older hats had completely enclosed pump holders with two oring's to isolate the pump body from the aluminum of the hat to...
  14. J

    Dual 465’s and E85

    Maxed them at 1017rwhp on a twin turbo 5.3 stroker. So indeed you will want the triple hat.
  15. J

    Which pumps are the same size as the GT Supercar pumps?

    Older Fore precision works hat or newer fore innovations hat? Power goal and boost level on e85?
  16. J

    E54: Facts compared to E85?

    I will list the basic steps for upgrading the gt500 fuel system while maintaining it return-less this is from years of testing and doing fuel stuff on dozens of gt500 setups. I will list these in order that makes the most sense benefit as well as money wise and they also compound or support each...
  17. J

    E54: Facts compared to E85?

    The stock system is compatible with ethanol use. Since the government passed the clean air and fuel act in early 2000's and 10% ethanol started getting put into regular gasoline, and flex fuel incentives were issued auto manufactures started making the fuel systems fully ethanol compatible (same...
  18. J

    E54: Facts compared to E85?

    To answer the original question yes the more ethanol you run the more power you will make and more potential to go up there. It's the physics of the increased mass of the fuel that's being injected cooling things down and creating more oxygen during combustion. The volatility and lack of energy...
  19. J

    Fuel Filter after 3 years of E85

    Higher ethanol content fuel indeed runs much cleaner overall, the more corrosive aspect cleans hydrocarbons and tarnish found in regular filtered petrol fuel. If your tank/fuel system has a lot of mileage on regular gas and any kind of build up and then you switch to e85 etc, it will often clean...
  20. J

    Leathal budget return system any one using it?

    Some general guide lines for line size to optimize the setup. 600hp - 6an feed/return 800hp - 8an feed / 6an return 1000hp - 8an feed/return 1200hp - 10an feed / 8an return As always with enough pump you can push smaller lines further before noticing any issues but these are the sizes you would...
  21. J

    There will be two smaller wires on the stock fuel hat plug, they connect to those 2 wires.

    There will be two smaller wires on the stock fuel hat plug, they connect to those 2 wires.
  22. J

    Lethal Return FPR loosing psi.

    Jons advice is spot on. Even on "small" factory lines they will continue to flow fuel as pump outlet pressure goes up. When the pump cant put out any more pressure is when flow would drop and in return a drop at the rails. Dual 465 is 1200hp worth of fuel so its not a flow issue unless you have...
  23. J

    Leathal budget return system any one using it?

    Not exactly a correct statement remember pressure and volume(flow) for a fuel pump are inversely related not proportional as you state in your garden hose analogy. For that garden hose pressure is not regulated at the nozzle, you changed the flow by adjusting the valve at the source where...
  24. J

    What filter are people using for e85?

    I should mention that microglass and stainless don't really look dirty at least not at the intervals I used them for. Next time the filter needs cleaned based on pressure difference I will try and get a pic.

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