DavidPHumes

iTrader: (1)

Like the title says, do you think this pump is capable of 600RWHP on E85?

323ci L33
TC76 turbo, 14lbs of boost
-6 feed and return lines
80lb/hr Siemens Deka injectors
E85
Fuelab boost referenced FPR

cyipher

iTrader: (1)

first issues i see is the -6 feed, that seems small for 600 on e85 as far as the pump goes that i dont know.

Ryne @ CMS

iTrader: (10)

yes when NA, but not boosted.... that has been my experience

DavidPHumes

iTrader: (1)

It's only a 12.5% difference between -6 and -8, so I'm not sure why it would matter dramatically (I know NOTHING about fluid dynamics, though).

I was kind of thinking it would be too close for comfort, just not sure what the "real world" has to say about it.

GrannySShifting

iTrader: (10)

80# injector arent going to be enough for starters unless you have the fuel pressure turned wayyy up. In which case the pump has no shot of keeping up. At least on my dyno.

A 340 lph aeromotive or full blown pump runs out at 380-400 rwhp on e85 turbo car, 50 psi or so.

Grr

iTrader: (2)

since when? 700whp is easy with 80s and many even get up around 800whp with FI cars and 80# injector

I have gotten right at 500whp with a single 255 on E85, I would think a 400 would be closer to 600 if you have a decent feed line, put in a -8 at a minimum to get your pressure drop under control

Lonnies Performance

iTrader: (16)

Not sure where you got your 12.5% calculation, but a 3/8" to 1/2" (-6 to -8) is an approx 75% increase in area.

js2fst

iTrader: (12)

Skinnies did alot more I believe

HexenLord

Ive made over 500whp in a 4cyl on E85 with a walbro 255. It helps to have larger injectors so you can keep the fuel pressure low and larger feed lines to prevent any restrictions. Some of the Honda guys have pushed closer to 600 on a single 255 on E85 but its possible they were using a booster pump to keep fuel pressure on the 255 to a minimum.

TAChief

nope.

the #8 fuel line has a 78% LARGER cross sectional area that the #6 line (pi * r^2) Flow is directly proportional to area. Given like PSI

typically (in line sizes) LARGER is better.....well most of the time in performance ( above 250 hp) LARGER is required.

tapping 500 hp and beyond requires a careful BALANCE between Your injection stratagy, PSI, fuel rail size, feed and retrun line size. ALL of these components are interdependant upon eachother. So yes with the "proper" balancing act you can make 500+ hp with a 190lph pump. With a stock fuel system (lines, injectors,rails) you couldn't make 500 hp with a PAIR of 340lph's.

http://www.enginelogics.com/fpump.html

http://www.fordracingparts.com/downl...ingEFIComp.pdf

same as above....lol http://www.injectorrx.com/fpump.html

loosing accuracy...http://www.eastcoastrollingthunder.c...r/finject1.htm

MATH: http://www.rceng.com/technical.aspx

TAChief

oops forgot to address the e85 aspect. OK all that ^^^ gets you to gasoline. NOW we must convert gasoline BTU to E85 and see HOW much E85 your gonna need.
the GGE of E85 to gas is 1.39; therefore, for every 1 gallon of GASOLINE needed (per above math) yoou will need 1.39 gallons of E85. This is based on Energy Content (ie BTU).

GrannySShifting

iTrader: (10)

Since I guess my dyno is stingy and you must have been on a hampster wheel. Gasoline walbro 255 done at 500 on a blower car on mine, and my turbo car on E85 is tapped at 400 with a 340 pump. I guess you gotta quantify that. 500 hp on my dyno can go 9s

Pressure drop in injected system isnt as serious issue. Couple psi drop in a 85 psi system is a couple percent. Not a 10 PSI system with 2-3 psi drop. Can make 600 on E85 easy on a 6 AN line

skinnies

iTrader: (33)

6an is plenty fine, we've made A LOT more than 600rhwp on it with e85, 80lb injectors are fine also, we've done over 850rwhp on them with enough pressure. Now as far as the pump goes, I can't comment on it, never ran it.