CJM Report: Effects of E85 after 3 years?

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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synolimit

interesting the oring looks fine in the damper yet tar is in the system. somethings getting eaten up. i think ill do e85 as needed and 93 the rest of the time. should hold off any damage indefinitely.

good to know; i didnt want to spend $42 on new ones. just hope the system is easy to bleed. i hate bleeding fuel all over the place.

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13 370z-

TopgunZ

Ive bled mine 3 times. You will get about an ounce or two of fuel from the connection of the feedline to the hardline junction.

Then it depends on if you can pull the rails off with the injectors still in them or not. If you can you can drain all the fuel the rails are holding at one time. If not, fuel will dump from the injector mount off the rail onto your lower plenum, but can be soaked up easily.

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