Fuel Pumps, Walbro vs Aeromotive, bosch044

[BoostedB18c]

edited

[mhassett]

Great find! I was plannin on twin 255's over the aeromotive piece. People hate it.

Now, do we sump our stock tank (I don't wanna get blowed-up weldin it)? Or just do a fuel cell?

[TwistedInnovations]

I have a guy that welds in sump.He did Mustang Mike and he is still alive.

[mustang mike]

i run 2 walbro 255 on my car and it will support 950hp. one for each fuel rail.

[mhassett]

i run 2 walbro 255 on my car and it will support 950hp. one for each fuel rail.
Im sure they would support 950 on an na motor... but our problem is that the flow drops fast as pressure goes up.

Say I run 30 psi of boost with a base fuel pressure of 45 psi. And a 1:1 regulator. So at 30 psi of boost the rail pressure is 75. So the flow is way down. And... well I gotta find a chart relating lph to basic hp. And the whole BSFC (brake specific fuel consumption?) whatever the factor is on how rich the motor must run at a specific hp level...

Cliff notes:
If 2 255's work for Mike - they will be more than enough for me... so good.

Oh, do you happen to have the part number for the pumps? I found a few external 255's but the pics showed barbed ends instead of pipe thread ends? I want pipe thread so I can use AN fittings and give that stupid Earl guy my money... LOL

[mhassett]

Stupid math... I dont think I did this right because I came up with 697...

<table x:str="" style="border-collapse: collapse; width: 564pt;" border="0" cellpadding="0" cellspacing="0" width="750"><col style="width: 56pt;" width="75"> <col style="width: 48pt;" width="64"> <col style="width: 22pt;" width="29"> <col style="width: 20pt;" width="26"> <col style="width: 56pt;" width="75"> <col style="width: 48pt;" width="64"> <col style="width: 22pt;" width="29"> <col style="width: 20pt;" width="26"> <col style="width: 56pt;" width="75"> <col style="width: 48pt;" width="64"> <col style="width: 22pt;" width="29"> <col style="width: 20pt;" width="26"> <col style="width: 56pt;" width="75"> <col style="width: 48pt;" width="64"> <col style="width: 22pt;" width="29"> <tbody><tr style="height: 16.5pt;" height="22"> <td style="height: 16.5pt; width: 56pt;" align="left" height="22" valign="top" width="75">
</td> <td class="xl28" style="width: 48pt;" width="64"> </td> <td class="xl29" style="width: 22pt;" width="29"> </td> <td class="xl30" style="width: 20pt;" width="26"> </td> <td class="xl28" style="width: 56pt;" width="75"> </td> <td class="xl28" style="width: 48pt;" width="64"> </td> <td class="xl29" style="width: 22pt;" width="29"> </td> <td class="xl30" style="width: 20pt;" width="26"> </td> <td class="xl28" style="width: 56pt;" width="75"> </td> <td class="xl28" style="width: 48pt;" width="64"> </td> <td class="xl29" style="width: 22pt;" width="29"> </td> <td class="xl30" style="width: 20pt;" width="26"> </td> <td class="xl28" style="width: 56pt;" width="75"> </td> <td class="xl28" style="width: 48pt;" width="64"> </td> <td class="xl29" style="width: 22pt;" width="29"> </td> </tr> <tr style="height: 12.75pt;" height="17"> <td class="xl27" style="height: 12.75pt;" height="17">@ 0 PSI</td> <td class="xl24"> </td> <td class="xl25"> </td> <td class="xl26"> </td> <td class="xl27">@ 43 PSI</td> <td class="xl24"> </td> <td class="xl25"> </td> <td class="xl26"> </td> <td class="xl27">@ 58 PSI</td> <td class="xl24"> </td> <td class="xl25"> </td> <td class="xl26"> </td> <td class="xl27">@ 73 PSI</td> <td class="xl24"> </td> <td class="xl25"> </td> </tr> <tr style="height: 12.75pt;" height="17"> <td class="xl31" style="height: 12.75pt;" x:num="" align="right" height="17">510</td> <td class="xl28">lph</td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl31" x:num="370.97035673921459" align="right">371</td> <td class="xl28">lph</td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl31" x:num="310.40376788383259" align="right">310</td> <td class="xl28">lph</td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl31" x:num="219.55388460075966" align="right">220</td> <td class="xl28">lph</td> <td class="xl29"> </td> </tr> <tr style="height: 12.75pt;" height="17"> <td class="xl32" style="height: 12.75pt;" x:num="16.666666666666668" align="right" height="17">16.67</td> <td class="xl28" colspan="3" style="">lph/ccpm factor</td> <td class="xl32" x:num="16.666666666666668" align="right">16.67</td> <td class="xl28" colspan="3" style="">lph/ccpm factor</td> <td class="xl32" x:num="16.666666666666668" align="right">16.67</td> <td class="xl28" colspan="3" style="">lph/ccpm factor</td> <td class="xl32" x:num="16.666666666666668" align="right">16.67</td> <td class="xl28" colspan="2" style="">lph/ccpm factor</td> </tr> <tr style="height: 12.75pt;" height="17"> <td class="xl31" style="height: 12.75pt;" x:num="" x:fmla="=A3*A4" align="right" height="17">8500</td> <td class="xl28">ccpm</td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl31" x:num="6182.8392789869104" x:fmla="=E3*E4" align="right">6183</td> <td class="xl28">ccpm</td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl31" x:num="5173.3961313972104" x:fmla="=I3*I4" align="right">5173</td> <td class="xl28">ccpm</td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl31" x:num="3659.2314100126614" x:fmla="=M3*M4" align="right">3659</td> <td class="xl28">ccpm</td> <td class="xl29"> </td> </tr> <tr style="height: 12.75pt;" height="17"> <td class="xl28" style="height: 12.75pt;" x:num="" align="right" height="17">10.5</td> <td class="xl28">A/F Ratio</td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl28" x:num="" align="right">10.5</td> <td class="xl28">A/F Ratio</td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl28" x:num="" align="right">10.5</td> <td class="xl28">A/F Ratio</td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl28" x:num="" align="right">10.5</td> <td class="xl28">A/F Ratio</td> <td class="xl29"> </td> </tr> <tr style="height: 12.75pt;" height="17"> <td class="xl28" style="height: 12.75pt;" x:num="" align="right" height="17">0.5</td> <td class="xl28">BSFC HP</td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl28" x:num="" align="right">0.5</td> <td class="xl28">BSFC HP</td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl28" x:num="" align="right">0.5</td> <td class="xl28">BSFC HP</td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl28" x:num="" align="right">0.5</td> <td class="xl28">BSFC HP</td> <td class="xl29"> </td> </tr> <tr style="height: 12.75pt;" height="17"> <td class="xl28" style="height: 12.75pt;" height="17"> </td> <td class="xl28"> </td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl28"> </td> <td class="xl28"> </td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl28"> </td> <td class="xl28"> </td> <td class="xl29"> </td> <td class="xl30"> </td> <td class="xl28"> </td> <td class="xl28"> </td> <td class="xl29"> </td> </tr> <tr style="height: 12.75pt;" height="17"> <td class="xl36" style="height: 12.75pt;" x:num="1619.047619047619" x:fmla="=A5/A6/A7" align="right" height="17">1619</td> <td class="xl28" colspan="2" style="">MAX Crank HP</td> <td class="xl30"> </td> <td class="xl36" x:num="1177.6836721879829" x:fmla="=E5/E6/E7" align="right">1178</td> <td class="xl28" colspan="2" style="">MAX Crank HP</td> <td class="xl30"> </td> <td class="xl36" x:num="985.40878693280195" x:fmla="=I5/I6/I7" align="right">985</td> <td class="xl28" colspan="2" style="">MAX Crank HP</td> <td class="xl30"> </td> <td class="xl36" x:num="696.99645905003069" x:fmla="=M5/M6/M7" align="right">697</td> <td class="xl28" colspan="2" style="">MAX Crank HP</td> </tr> <tr style="height: 12.75pt;" height="17"> <td class="xl33" style="height: 12.75pt;" height="17"> </td> <td class="xl33"> </td> <td class="xl34"> </td> <td class="xl35"> </td> <td class="xl33"> </td> <td class="xl33"> </td> <td class="xl34"> </td> <td class="xl35"> </td> <td class="xl33"> </td> <td class="xl33"> </td> <td class="xl34"> </td> <td class="xl35"> </td> <td class="xl33"> </td> <td class="xl33"> </td> <td class="xl34"> </td> </tr> </tbody></table>

[mustang mike]

call this number 1-888-603-7120 gsl392 255 pumps. they run $119.00 each

[jdm94eg]

Hassett why not do this,
Dual walbros inside the tank

http://www.honda-tech.com/zerothread/2138241

dual setup everything needed $299
http://www.fullblownmotorsports.net/product_info.php?products_id=59
damn i was trying to find this earlier lol i guess its popular with the high HP supra guys