I'm actually surprised it wasn't higher than that. I remember seeing the aeromotive booth at the PRI show a few years ago and they had a cutaway gas tank with an A1000 running inside of it and returning through a regulator. I don't know what fluid they were running but the tank was too hot to hold your hand on.
I notice a difference if i fill up with fresh cold fuel, i would be curious what my temps are..
When you were at mpact how much fuel were you carrying?
1989 535i - sold
1999 M3 Tiag/Dove - sold
1998 M3 Turbo Arctic/black - current
2004 Built motor TiAg/Black - Sold
2008 E61 19T Turbo-Wagon - current
2011 E82 135i - S85 Swap - current
1998 M3 Cosmos S54 swapped Sedan - current
1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53
98 Fern Green M3/2 - Precision 6870/AR Designs Twin Scroll/RK/E85
2017 Toyota Tundra Crewmaxx - Family Whip
2011 Pierce 75' Quint - Fire Apparatus West Islip FD
Yes two pumps running makes a TON of heat. Exactly the reason why I'm trying to stay away from that all.
My friends turbo NSX, we built a fuel system for it. Walbro 255 in OE tank feeding a surge tank w/ 2x 044's.
At first we had both on at the same time, the surge tank fuel got so hot in a matter of minutes of just the car running at idle it got to the point after 15-20 min that you could barely hold your hand on the surge tank (aluminum) and as time went on the lines from the tank to the fuel rails and the rails themselves started to get hot.
Once we staged the pumps, the difference was truly amazing. One pump running and the surge tank would take a long time to warm up, and then it would be just that warm never hot.
Can someone enlighten me why smaller displacement uses less fuel to make the same power as a larger displacement engine. I'm missing something here since I've never done the calls myself. I'd have to imagine the boost pressure on a smaller displacement would have to be greater to make the same power as a larger displacement and therefore you need a higher rail fuel pressure and therefore less fuel pump output. Is a function of chamber volume equated in here that results in less fuel required that I am missing?
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My 0.02 on running a second fuel pump. Just have it kick on based on boost pressure if running stock ecu
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I wonder what the triple Walbro supra guys are doing....and what their fuel temps look like
*Heads off to search supraforums* :p
Run a fuel cooler/chiller
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I agree at the same boost a 2.5L needs less fuel. But he was definitely running more boost than would've been required on a 3.2l to make 700whp. So I'm trying to figure out why at a higher boost pressure he was still requiring less fuel and his one fuel pump kept up where you're saying larger displacement engines ran out of pump
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I think the component you are missing here is rpm
What rpm did make 700? A turbo car can use 5+% less fuel at 7000 vs 6000..
Did he make 700@ 7800 or 700@6800??
Last edited by vollosso; 04-12-2016 at 05:05 PM.
1989 535i - sold
1999 M3 Tiag/Dove - sold
1998 M3 Turbo Arctic/black - current
2004 Built motor TiAg/Black - Sold
2008 E61 19T Turbo-Wagon - current
2011 E82 135i - S85 Swap - current
1998 M3 Cosmos S54 swapped Sedan - current
1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53
I can't see why 700 whp on a 3.2 would need more fuel than 700 whp on a 2.5 assuming both the 2.5 and 3.2 are tuned to the same AFR and timing is at MBT for both. (higher boost and rpm of course required to make same power on the 2.5). Basically that would be saying that BSFC inherently increases with displacement.
717whp at 7600rpm at 26.5psi
Small part of my order came in, awaiting the call from the machine shop on the block.
Vibrant 3.5 or 4"?
I have a vibrant 3.5" res and muffler and it sounds sick.
1989 535i - sold
1999 M3 Tiag/Dove - sold
1998 M3 Turbo Arctic/black - current
2004 Built motor TiAg/Black - Sold
2008 E61 19T Turbo-Wagon - current
2011 E82 135i - S85 Swap - current
1998 M3 Cosmos S54 swapped Sedan - current
1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53
1989 535i - sold
1999 M3 Tiag/Dove - sold
1998 M3 Turbo Arctic/black - current
2004 Built motor TiAg/Black - Sold
2008 E61 19T Turbo-Wagon - current
2011 E82 135i - S85 Swap - current
1998 M3 Cosmos S54 swapped Sedan - current
1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53
1989 535i - sold
1999 M3 Tiag/Dove - sold
1998 M3 Turbo Arctic/black - current
2004 Built motor TiAg/Black - Sold
2008 E61 19T Turbo-Wagon - current
2011 E82 135i - S85 Swap - current
1998 M3 Cosmos S54 swapped Sedan - current
1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53
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