Walbro 400 lph pump
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On The Tree
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Some of the forced induction guys are running those instead of dual pumps. I believe it draws a lot of current so plan wisely.
Note, there are two versions: one for gasoline and one certified for 100% e-85 use.
Note, there are two versions: one for gasoline and one certified for 100% e-85 use.
I actually have same question as mufflerguy, i found this one.
http://www.nolimitmotorsport.com/pro...00267-400-0085
I think its same pump, just E85 version. I'm doing a turbonetics 76 on an L33 and really would like to run 1 intank. I have similar goals as mufflerguy. I have -8AN feed, -6 return and 60lb injectors.
http://www.nolimitmotorsport.com/pro...00267-400-0085
I think its same pump, just E85 version. I'm doing a turbonetics 76 on an L33 and really would like to run 1 intank. I have similar goals as mufflerguy. I have -8AN feed, -6 return and 60lb injectors.
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I actually have same question as mufflerguy, i found this one.
http://www.nolimitmotorsport.com/pro...00267-400-0085
I think its same pump, just E85 version. I'm doing a turbonetics 76 on an L33 and really would like to run 1 intank. I have similar goals as mufflerguy. I have -8AN feed, -6 return and 60lb injectors.
http://www.nolimitmotorsport.com/pro...00267-400-0085
I think its same pump, just E85 version. I'm doing a turbonetics 76 on an L33 and really would like to run 1 intank. I have similar goals as mufflerguy. I have -8AN feed, -6 return and 60lb injectors.
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Verdad Gallardo Question really is will pumps shown above supply the volume single handedly that a 600-700hp engine will require?
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The walbro will handle 700whp at 60 PSI, it will not at 85 PSI. Upping fuel pressure to increase injector flow ultimately reduced pump flow. You must find a balance to make them both work.
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On The Tree
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Hey! Its all about me here!!
If I use the 96's, am I going to give up some driveabilty? This is first and foremost a street car. I'm thinking the 80's may be a better balance, but I'm not very educated on the finer turbo points yet. Is my thinking correct?
If I use the 96's, am I going to give up some driveabilty? This is first and foremost a street car. I'm thinking the 80's may be a better balance, but I'm not very educated on the finer turbo points yet. Is my thinking correct?
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Depends on how much power we're talking. I usually recommend 80s because they support ~800whp at reasonable fuel pressures. 60s are usually comfortable below 650whp. You can get more out of them by increasing pressure, but that's when you have to start looking at other options for fuel pumps.
650whp can be made on a large single pump like the Walbro 400 on gasoline. 800whp on E85 is usually pushing the limits of a pair of the smaller Walbro 255s.
In these cases, larger injectors can usually take some of the stress off of the fuel pump(s). 96 lbs can still be ran with decent driveability especially if they are high impedance.
650whp can be made on a large single pump like the Walbro 400 on gasoline. 800whp on E85 is usually pushing the limits of a pair of the smaller Walbro 255s.
In these cases, larger injectors can usually take some of the stress off of the fuel pump(s). 96 lbs can still be ran with decent driveability especially if they are high impedance.
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At 650 to the wheels (700 + ish), is a 3 bar map a requirement, or will a 2 bar work. Again, I am reading about driveability issues when you get into the 3 bar, but I am not knowledgeable enough yet to understand the difference. Thanks for the help.
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Hehe...........honestly, I did not set out to build this much hp! My original plan was a 600hp LSA motor. Then I started reading about issues GM was having with the eaton superchargers and I started looking at other options. I got in touch with Lil John and told him my goals, and he recommended a package for me. Now I'm seeing some of the numbers that this combo makes and I'm like wow! This is a new build, from scratch, so I need to purchase everything. I'm just trying to educate myself so I do things right the first time, and don't need to backtrack and purchase stuff 2 or 3 times. I want to make sure that the pieces I purchase are geared towards good street manners first, and power levels second, because its looking like this combo will build substantially more than my original goals.
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So if I set this turbo set up to make 15lbs and no more, then IYO, would 80's and a 2 bar map get me better driveabilty that 96's and a 3 bar? Or am I better to buy the larger stuff now, and rely on the tuner to get me a good street tune? Thanks for the help guys.
Be sure to get the 450lph pump, F90000267. There've been a few threads about durability issues with the 400lph F90000262 pump, presumably either people trying to run e85 through them or possibly the small amount in typical pump gas (10%). Prices are similar, just get the bigger one. I got mine on ebay for $137 shipped. The two are visually distinguishable because the 450's pigtail is hardwired to the pump while the 400 has terminals that you push wires onto.
