CJM Report: Effects of E85 after 3 years?

phunk

I would expect little to no benefits. It would definitely require a retune, but you are probably aware of that. If I had every other bolt on and was pushing to around 350rwhp NA, than I might be interested to try and tune it with some E85 and see whats in it... But for now I can only guess. 3-10hp with tune? Perhaps it would be worth researching a little in the Honda scene since those guys try everything and have countless NA builds.

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megalapagas

Phunk what about Nitrous and E85?

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GTM 34 Row Oil Cooler | K&N Drop Ins w/ Z1's Post MAF Tubes | F.I Non-Res'd 2.5" T.P w/ CF CBE | Axis Wheels | Piecing together My Own Custom T4 Top Mount Single Turbo Kit *Still in the works* |

phunk

I have never personally mixed the 2... but I know that it is done all the time. You just have to keep in mind that your jetting will have to configured for the higher fuel needs... and of course you will need quite a fuel system as both nitrous and E85 require tons of extra fuel.

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jofro6

Thanks for the info on the E85 and NA. I was assuming the probable benefits based on running an E85 setup with a full custom tune on it. So basicly, none lol

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2012 Red 6Spd Touring/Nav.. FI CF NonRes CBE and Res TP #682 Fly1 RS1 CF Fenders

phunk

Well.. I wouldn't rule it out. Between the high compression and VVEL maybe the VHR could make something of it. Until someone tries it... We can only make guesses. If it made another 10 consistent HP, and was conveniently available.. That could make it worth the while. Who knows, maybe there's 20hp to find in it. I have rather little experience with all motor engine management tuning. Most of the cars I have worked on during my career were FI.. So I am far from an authority on the all motor stuff.

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jofro6

Thanks Phunk... You sell a majority of the fuel supply items don't you? What would I need to make the conversion (and your price), cause i have it very available near me. You can PM so I dont derail your thread any further.

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2012 Red 6Spd Touring/Nav.. FI CF NonRes CBE and Res TP #682 Fly1 RS1 CF Fenders

megalapagas

No I want to know too but for the high pressure that E85 requires what fiel pump woyld I be needing?

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GTM 34 Row Oil Cooler | K&N Drop Ins w/ Z1's Post MAF Tubes | F.I Non-Res'd 2.5" T.P w/ CF CBE | Axis Wheels | Piecing together My Own Custom T4 Top Mount Single Turbo Kit *Still in the works* |

Chuck33079

Does E85 require significantly higher pressure? I thought it was just a volume difference from pump gas and you'd be fine with a 340lph pump and bigger injectors for NA.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

megalapagas

Ok then so pump, injectors wise 600cc is about right or too much or is there specific injectprs/fuel I pump I need?? Also once changed its only Strictly E85 or can I pour Premium Gas too?

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GTM 34 Row Oil Cooler | K&N Drop Ins w/ Z1's Post MAF Tubes | F.I Non-Res'd 2.5" T.P w/ CF CBE | Axis Wheels | Piecing together My Own Custom T4 Top Mount Single Turbo Kit *Still in the works* |

jwick

E85 or nothing. There is no current flexfuel option

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'10 G37T 6MT Graphite/Graphite - BP - G37T Build

Chuck33079

Since you're planning a nitrous build I'd go larger on injector, but I'll defer on specifics to someone with more E85 knowledge. Going back and forth between E85 and pump gas is supposed to be a pain in the *** since you don't want to dilute the E85 down with leftover 93. I'd think really hard about this for a NA car. If you only gain 10-15whp but you have to pay for a re-tune along with a new pump and injectors, is it even worth it? Sure, E85 is cheaper, but mileage drops significantly so you're not really saving any money.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

phunk

Apologies for temporarily abandoning my own thread just after posting it. I was away in Utah for the rest of the week and just returned.

I do all the fuel system stuff on these cars! Let me know if you needed any questions answered still. I see you guys were discussing it in the thread here.

But just to clarify... injectors and retune are all thats needed for sure. a fuel pump is a maybe for NA... i wouldnt do it unless i started to see fuel pressure drop.

You could use both E85 and 93 octane but you would have to tune 2 maps and use the map switching feature to switch over when you change fuels since the 370z does not currently have any flex fuel capability options.

But then again, nobody really knows at this point if there is much gain to be found in it. Hopefully someone will try it out soon and answer that question.

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jofro6

Thanks for the great news. I wouldnt need to upgrade the lines at all or anything?

Would 600cc be enough or is it worth it to just spend the extra and go up to something larger just for the hell of it and headroom? Or does running an injector at too low of a % hinder pressure or performance?

Well if its the right price, I guess I could be that guy to test it out. lol

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2012 Red 6Spd Touring/Nav.. FI CF NonRes CBE and Res TP #682 Fly1 RS1 CF Fenders

synolimit

from what ive seen e85 always adds power on any car with a tune. it always just comes down to price though. for me (where im at parts wise), if what you say is true (no pump needed), then 1000cc ID injectors for like $700 for 10-15hp is worth it! 15hp might be a stretch but ive seen others with 10hp no problem.

the seals do worry me though. if they arent Vitron? then E85 will eat it. older cars get "the black sludge" where E eats everything!! i dont think you can tell this on a 370 though since we dont have a return fuel system. on older cars or return system cars its really easy to see as your sock will be solid black with tar, or it wont.

im getting a tune soon with the ported everything then again later with E and injectors and possibly fuel pump. like everything on a Z just sit back and wait a while haha.

PS...how hard is it to pull the lower manifold? can i leave the fuel rails attached to the car or do i have to pull it out of the way and relieve the pressure in the lines?

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13 370z-

phunk

I am not sure if the OEM orings are Viton or what. But I have not had any show any failure. The large fuel pump module oring in my car is original. The injector orings looks good, and the oring that came out of the fuel damper fitting looks fine as well. I havent seen any deterioration of anything in the fuel system.

The fuel rails have to be removed to gain access to the bolts for the lower manifold. Well, at least they do with my billet rails, I cannot remember now with the stock ones. But I am pretty sure even with the stock rails.

I reuse those gaskets generally unless they get in bad shape.

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