So I have read http: //my350z.com/forum/forced-induction/506994-max-power-on-stock-fuel-rails-converted-into-a-return-style-system-frs.html It seems like I can run a decent amount of power on the stock rails with pump gas. But no one talked about running E-85 with the stock rails. My plans is to get a custom FRS with the help of some locals since I limited knowledge on Fuel Set ups.

Will this set up work 340lph pump to -8AN Hose, Inline Fuel Filter, Stock Rails with 1000CC Injectors, -6AN fuel return?

Only reason for such big injectors is E-85 with Vortech V2 T-Trim with 2.87 pulleys on built Block.

Yes I know this is a newb question but what ever....Haters going to Hate.

 

The real question is what are your power goals?

 

Power goal are 550 pump 625-650 E85

 

Gonna want to at least add a bigger fuel pump. I was having fuel issues up top with a 480 walboro.

 

For E85, I don't think those injectors will get you there either. 1300cc should do it with two fuel pumps or bumping up the voltage on a 485. I switched from a voltage regulated 485 to a dual pump (ran the 485 at 10.5 volts up to 4 psi and 17 volts above that). I have the ken bell boost a pump and the right electrical components available for this set up if you want to make an offer.

 

I have customers that have made this much power on 93 pump gas (Dyno Jet), 750cc fuel injectors and a 340lph fuel pump. I don't think you need to use E85 to get to your goals.

 

^ Vortech setup will not be the same...

 

Yup you are right, I missed that completely.

 

I wonder if you will get 100whp by just upping the timing with E85. prolly would have to add like 10* or more.

You dont need -8AN hose. -6AN is all that can come out of the pump and more than sufficient for your needs.

you want to use the walbro 485 pump as well, skip any of the 320lph options.

 

Some people are making 600 with 3.12 pulleys and this supercharger so i'll dial it back some. If E-85 is going to be a huge pain in the *** i might say F-E85.

Will the Walbro 485 fit in the stock basket or it need modification??

 

Needs to be modded a good bit to fit. I have a 480 and a modded basket if interested.

 

Your plan will make your gasoline power goals, but not your E85.

1000cc injectors can just barely make it to 650rwhp E85 if everything is ideal circumstances on a turbo car... but the supercharger itself should push your fuel needs quite a bit higher. The 340 pump is the same situation only a bit worse. I could see a 340 pump making 650rwhp on E85 with a high compression E85 specific build on a turbo car. My 11:1 VQ made 580-ish rwhp E85 from a 340, with a few psi of pressure drop on the top end. Had I done some more plumbing upgrades, I think it would go just a little further.

 

If you still have it in 6 months and I'm still looking let you know.

I will have stock compression with bigger cams. I would like to get E85 is because we only have 91 octane up here. And I feel with running so much boost on stock compression im going to have to worry alot about knock.

Why do superchargers require so much more fuel than turbos??

 

superchargers put a significant drag on the crankshaft, robbing a ton of the HP the engine is making. i generally see my supercharged customers running out their fuel system around 100rwhp shy of what the turbo cars can do... but there is no rule for it

 

Just curious… what fuel pump (brand) are you using? I’m shooting for 500 - 550whp on E85, I’m picking up your stage 1 RFS (w/dampers), I already have DW 1000cc injectors, and now I just need to shop around for a fuel pump… I was planning on the DW 400 E85 pump but if you’re making 580whp with a 340 I’d prefer that route for the sake of simplicity. Thanks!

 

I have an Aeromotive 340, part number 11142. The 370z has a little bit improved fuel sending unit. I cant easily measure how much improved, but by studying its passages, common sense says it will flow volume a tad easier.

I just looked at the graph and my exact number was 586rwhp, Dynojet STD. Dont ask me why, but STD is what people post on the 370 board. I believe I was 12-15hp less with SAE, but I dont have the runfile to check.

11:1 VHR motor, ID1000cc injectors, Aeromotive 11142 pump. 24 degrees advance by redline, ramping in very fast from peak torque, 9psi boost from the 20gs.

I think the compression ratio is a big deciding factor with the E85 switch-over... higher compression of course means less boost (translates to being easier on the fuel system, lower rail pressure) and less fuel volume required overall. I run stock fuel pressure with no 1:1 rise on my 370.