b6 fuel rail question

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I'm trying to get my E85 setup working right on my 92 b6 sohc. With 336cc injectors from a Scion TC, they are the skinny type so you can ramp up the duty cycle up just a bit more, an adjustable fuel pressure regulator set to 60psi, a wolbro 255lph pump in the tank, and an Apexi safc, I still get fuel cut after 10psi and i keep thinking my injectors are not getting enough fuel. Anyone know if any bigger fuel rails could be modified to fit?

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What injectors were you using before e85? Are you talking about a fuel cut after 10psi at the fuel rail? I probably won't be able to help you, I just want to understand the question :p

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I was running stock BP 254cc. By fuel cut I mean there is a heavy misfire from leaning out. This a newer setup, a couple thousand miles, and still dialing it in.

[FestYboy]

are you sure it's not spark blowout? 10psi is something a stock fuel pump and 323gt injectors can handle easily. i would suspect a non fuel issue given what you have on the engine.

BTW, how's the oil consumption?

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I do also have an Accel 42,000kv coil with 8mm solid core wires. I'll try lessening the gap a little. The oil issue was the same as always. I finally got around to harvesting and ultrasonicly cleaning some used HLAs and installing them on Thursday. The slight amount of HLA tick I had is completely gone so ill check the catch can on Monday after work.

[getnpsi]

you can use an aspire rail with the plenum and you gain a schrader valve you can use for a screw on FPR install or a higher diameter feed and return line., just throwing that out if you can score those parts free or near to free.


cough i do have an aspire rail and its stock injectors lying around

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LOL, so the aspire rail is bigger than the mk2 b6 rail? Keep in mind I'm running E85, a lot more fuel is needed.

[FestYboy]

ok so your saying it went back to the way it was before madness or since the trip home? i'd hate to think that the baffle stopped working after only a few days.

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Yep. The valve tic got a lot worse also.

[fastivaB6TG25MR]

336cc's is WAY too small for e85... youll wanna get at least 700cc's if you wanna make any sort of power out of it
i was maxing out 370's on 14psi of boost on 91 octane in my B6T on 50psi of fuel pressure

im gettin 1200cc's for my e85 BP build

[FestYboy]

Yep. The valve tic got a lot worse also.

crap, i thought i was on to something there... it didn't come loose did it?

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Will the sohc b6 fuel rail flow 700cc? The baffle is still were you installed it

[fastivaB6TG25MR]

my buddy was running 900cc's and making over 500whp on the stock square egt style fuel rail... the rail is a hollow tube and is not a restriction... its bigger around than your fuel lines so it only makes sense that they will become a problem before your rail will

[Rocketman]

Would a B6T fuel rail fit? They're freakin massive.

I agree, 330cc is about optimal size for a B6 turbo on straight gas, but way undersized for e85

What's the percentage, like 65% larger for equivalent e85 setups?

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Idk is the b6t rail will fit, that's the reason for this thread...