fuel pump setup?
Sep 25, 2018, 09:26 AM
#1
fuel pump setup?
So i am looking to start converting my car to E85. I got a hold of an used OEM fuel pump housing which I can either build my own dual pump setup or modify it to run a Walbro 450. Since i am a DIY kind of guy i like to build my setup. My car is currently on a stock block with FIC1100 injectors with a 255, stock lines, stock FPR and Stock fuel rail. For now i want a setup that will allow me to run the stock components since it my current turbo and stock bottom end probably will not see over 450ish hp.
Once i start looking at building the motor i will upgrade the turbo as well (Fp Black or similar, looking for max of 650ish) and at that point i will look at upgrading the feed and return lines to alleviate any pressure issues. but honestly this will probably be a couple of years out.
What experiences have you guys had while running the dual pump and or walbro 450? which is better? I think im leaning towards the dual pump sice while crusing it can still use the 255 and i can either have an additional 255 or a 450 to help supply the fuel needed. I am going to tune the car on dual maps and eventually get it on a flex tune of some sort.
any guidance/advice is extremely appreciated!
thanks
Once i start looking at building the motor i will upgrade the turbo as well (Fp Black or similar, looking for max of 650ish) and at that point i will look at upgrading the feed and return lines to alleviate any pressure issues. but honestly this will probably be a couple of years out.
What experiences have you guys had while running the dual pump and or walbro 450? which is better? I think im leaning towards the dual pump sice while crusing it can still use the 255 and i can either have an additional 255 or a 450 to help supply the fuel needed. I am going to tune the car on dual maps and eventually get it on a flex tune of some sort.
any guidance/advice is extremely appreciated!
thanks
Sep 25, 2018, 11:31 AM
#2
You're at border between 450 and dual pumps. If you run 450, you'll need to rewire pump to have 8V and 14V switch over (like oem except with direct power from battery). If you run dual pumps, you'll also need rewire for secondary pump and 8V/12V (oem) for primary pump. Both should give you enough for 650whp.
Last edited by 2006EvoIXer; Sep 25, 2018 at 11:39 AM.
Sep 25, 2018, 12:23 PM
#3
EvoM Guru
iTrader: (1)
A single Walbro 450 will be done at around 600-650whp with 2000cc injectors, depending on the boost it takes to get there. Dual 255's will north of 700, again, depending on how much boost you need.
Sep 25, 2018, 09:58 PM
#6
So I have thought about the AEM pump, but will it be enough on e85?
I had a buddy who built his motor and had an AEM pump in his car. He put the pump in prior to his engine going out so it sat for about 8 months. After getting the car built and during the tuning process it went out causing it to go lean and ruining a new build. Probably one off but worries me none the less
I had a buddy who built his motor and had an AEM pump in his car. He put the pump in prior to his engine going out so it sat for about 8 months. After getting the car built and during the tuning process it went out causing it to go lean and ruining a new build. Probably one off but worries me none the less
Sep 26, 2018, 08:18 AM
#7
EvoM Guru
iTrader: (1)
If you're currently running a stock turbo on a stock short block, all you need is a Walbro 255. They're like $80, don't over think it 
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Sep 26, 2018, 09:07 AM
#8
It’s not a stock turbo. It’s an Owen development turbo which was designed by Ross Sport from England. It was released the same time as the FP54 and they seem to share certain characteristics. I never got the full spec sheet of the turbo but from what I researched it was very similar to the FP54 design.
On their shop car car it supposedly made 550 “flywheel” hp on a dyno dynamic dyno. The best I got on the same dyno with my stock block was 479 “flywheel” hp which was probably around 420ish dynojet according to VD. During those pulls I think my current fuel setup was hitting 60%idc. So if e85 will need 30% more then I’ll be close to maxing out the fuel system while using that tune correct?
On their shop car car it supposedly made 550 “flywheel” hp on a dyno dynamic dyno. The best I got on the same dyno with my stock block was 479 “flywheel” hp which was probably around 420ish dynojet according to VD. During those pulls I think my current fuel setup was hitting 60%idc. So if e85 will need 30% more then I’ll be close to maxing out the fuel system while using that tune correct?
Sep 26, 2018, 10:39 AM
#9
Post #40: https://www.evolutionm.net/forums/ev...50-pump-3.html
I still think a Walbro 450 is enough (barely) for a FP Black if it's set up properly. If you need more fuel than a properly set up 450, then I think you're pushing your Black way out of it's efficiancy range (650+whp) and will probably wear the turbo out fast. For a FP Red to make 650whp, that's pushing it wayyyy out of it's efficiency range and we don't want to DD that kill-mode tune. A FP Black will do 650whp on less boost, but I was told that 32psi is best boost for Red and Black to live a long and happy life (which is probably around 600-650whp depending on dyno for a Black).
I have a Walbro 450 version 274 but I have not installed it yet. My pump rewire gets 13.8V-14.0V at idle (13.8V when AC clutch is engaged). But as engine is revved up, I expect alternator to hold 14V. I'm thinking that Boost-a-pump is good insurance since we don't know when our alternators crap out.
My personal preference is to avoid dual pumps because that just adds to more parts that can fail which would likely end with blown engine.
I still think a Walbro 450 is enough (barely) for a FP Black if it's set up properly. If you need more fuel than a properly set up 450, then I think you're pushing your Black way out of it's efficiancy range (650+whp) and will probably wear the turbo out fast. For a FP Red to make 650whp, that's pushing it wayyyy out of it's efficiency range and we don't want to DD that kill-mode tune. A FP Black will do 650whp on less boost, but I was told that 32psi is best boost for Red and Black to live a long and happy life (which is probably around 600-650whp depending on dyno for a Black).
I have a Walbro 450 version 274 but I have not installed it yet. My pump rewire gets 13.8V-14.0V at idle (13.8V when AC clutch is engaged). But as engine is revved up, I expect alternator to hold 14V. I'm thinking that Boost-a-pump is good insurance since we don't know when our alternators crap out.
My personal preference is to avoid dual pumps because that just adds to more parts that can fail which would likely end with blown engine.
Sep 27, 2018, 11:47 AM
#10
I think I may just go with the 450 and do the rewire with an feed and return lines. Probably get a bigger fuel rail as well for added insurance. I’ll take my time and build it up right. I’m planning on moving my battery to the trunk as well so doing the rewire will be pretty easy.
In in the mean time I may just get a new Wally 255 since mine is about 3 years old and use that to start a baseline with e85
In in the mean time I may just get a new Wally 255 since mine is about 3 years old and use that to start a baseline with e85
Sep 28, 2018, 05:25 AM
#13
Evolved Member
https://www.evolutionm.net/forums/ev...-evo8-9-a.html
just do the double pumper then your fuel system will easily supply that FP Black you eventually plan on running.
i used the standard walbro pumps and seated the pressure relief springs deeper or you can use the 255hp pumps but they cost a little more IIRC.
I was at 90% duty cycle @ 800hp w/2150’s around 40psi with upgraded lines so that should be the most you ever need.
just do the double pumper then your fuel system will easily supply that FP Black you eventually plan on running.
i used the standard walbro pumps and seated the pressure relief springs deeper or you can use the 255hp pumps but they cost a little more IIRC.
I was at 90% duty cycle @ 800hp w/2150’s around 40psi with upgraded lines so that should be the most you ever need.