Just for reference-

Twin 255 run parallel with twin lines to the rail (twin entry) with 1000cc injectors was good for 708whp and 150mph traps. This was about the limit of the stock ignition, so I could not push it any further. I doubt I had much fuel left to give with the 95% IDC I experienced.

 

Does anyone know the max current draw of the stock fuel pump?

 

Great and helpful tread!!

I am pleased to show my fuel sistem, a mechanical pump running by an electric motor.

It consist of a walbro 255 fuel pump in the original position that supply an electro-mechanical pump in the front bay.

http://lnx.evolutionclub.net/gallery...DSCN0146_copia

http://lnx.evolutionclub.net/gallery...to&id=DSCN0164

The mechanical pump
http://lnx.evolutionclub.net/gallery...to&id=DSCN0061

The injector (very special one Marelli)
http://lnx.evolutionclub.net/gallery...DSCN0076_copia

Base fuel pressure 8 bar.

I am using this system for more than one year without trouble.

 

you're running the twinturbo supra pump?

goodness gracious with bschur coming out with his twin walbro setup IN TANK can't someone just show us how to cut the evo fuel pump housing to accept the supra pump???

 

The problem in modifying the fuel pump/sender assembly is that the pump is housed in a molded plastic cylinder, which is molded to the fixed diameter of the stock pump. The Walbro is the same diameter, and thus fits in the stock location. The Supra TT pump is a 50mm diameter, and will not fit in the same "hole" as the stock pump and Walbro does. You can't "bore out" the hole, as its molded with a thin wall and is not a solid piece of plastic around the pump. You would basically have to just cut most of the lower part of the housing off and build an alternative...

I have found a Denso built pump that is the correct diameter, and expect to have it tested for flow numbers in the next couple weeks. If it flows as well as the TT Supra Denso pump, and is the correct diameter, it would be the solution that offers OEM reliability, quiet operation, Denso quality, and fits in the location where the stock pump resides, without having to hack the fuel sender/pump assembly housing...

 

THIS is what i wanted to hear. THANK YOU. finally some headway into this mess. i'm sick of hearing about the stupid walbros

 

any updates?

 

I made my own fuel system... This will flow enough for anyone

It's a Bosch 044 pump.
-8an feed.
-6an return.

RC 1000cc Injectors.
HKS Fuel Rail.
MagnaFuel BTR.
Special home made intank solution








You may find some more information on my blog
http://zevo.se

 

too big hahah i want the drop in that fits. i can deal with some wiring. waiting for co vr4

 

Nice....your running a bosch inline 044 pump, with what kind of intank pump?

 

hope thats not the permanent wiring.

 

Anyone has a link for the fuel injector seal kit?

I went to a few vendors here, and its not listed on their sites.
thanx

 

They should come with your upgraded injectors.

If not, I can get some for you,

 

CO_VR4, how did the tests go with that fuel pump?

 

The Denso 38mm fuel pump sold here by AP Boss Ltd. was sent to RC Engineering and flow tested. Here are the results:

PSI ------- LBs/Hour ---------- Liters/Hour
35 399 244
40 380 232
45 (43 base pressure) 362 221
50 7 352 215
55 12 333 203
60 17 323 197
65 22 305 186
70 27 289 176
75 32 274 167
80 37 256 156
85 42 236 144
90 47 230 140
95 52 217 132
100 199 121
105 184 112
110 169 103

This is the 38mm Denso pump that fits in the stock fuel sender assembly, not the Denso Supra TT pump, which is a 50mm diameter pump.