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E85 conversion

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Old Oct 3, 2010 | 07:20 PM
  #41  
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From: dfw
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Originally Posted by gernby,Oct 3 2010, 06:13 PM
I figured they would have at least as many S2000 dyno files as anyone in Dallas.

I won't pretend to know how much of a problem I would have with the fuel lines. However, the fuel system was totally redesigned for the '06 models, and E10 was everywhere by then. I would have to believe that Honda would have made some effort to make the system somewhat tolerant of Ethanol.
fuel pump

fuel lines and all o-rings related

fuel injectors

thats all you need to worry about..

did you confirm with your injector supplier that their injectors were e85 compatible?
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Old Oct 3, 2010 | 07:21 PM
  #42  
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Originally Posted by DFWs2k,Oct 3 2010, 09:02 PM
I was doing some more reading, greg, and both tony and jeff from evans tuning have said that nothing in the fuel lines need to be swapped to make it "safe" to run e85 in an S. Hopefully that means for awhile, not just for dragging purposes.

When you switch fuels, how are you going to resolve the issue of having a little e85 left in the tank/lines, and using that up before going back to e10?

I'm hoping that maybe you can just start it and drive on it carefully for a short while then switch to the map for the other fuel?
shoudl only take a minute or so to clear out the e85...
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Old Oct 3, 2010 | 07:28 PM
  #43  
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From: dfw
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also, see my post related to gernby.

back in the late 80s a college tried to convert a bunch of turbo buicks to e85 to prove the benefit.

they needed new fuel tanks, pumps, braided ss fuel lines, new orings on the injectors, etc..
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Old Oct 4, 2010 | 05:47 AM
  #44  
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Originally Posted by rioyellows2k,Oct 3 2010, 08:36 PM
I don't think so, Honda never said the cars were E85 compatible.
I don't think ANY japanese car is totally able to run E85. My belief (or guess) is that the US might be the only market that uses Ethanol, so they may not want to develop a flex fuel ECU. However, they do have to make the fuel system safe enough for E10. There was at least 1 fuel system recall on my '06 Lexus IS350 that was supposedly related to Ethanol.
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Old Oct 4, 2010 | 05:49 AM
  #45  
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Originally Posted by jaundice,Oct 3 2010, 08:49 PM
Don't go to Jotech. T1 (Tony) knows so much more about S2K tuning than Kenny... Ask me how I know. LOL. Tony also has tuned several E85 swaps and even has a conversion kit for it. Give him a call. He is very good to work with.

If you have followed any of my threads in the FI section, Jotech tuned my KPro turbo'd car first, and didn't really seem to know KPro. Tony fixed my car and re-tuned it. Night and day difference in the tunes.

PM if want more info, but from experience, Tony is the better tuner.
I just need the dyno, since I've already tuned it. If Tony has a superior dyno, or has more S2000 dyno files, then I'd go to him instead.
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Old Oct 4, 2010 | 07:19 AM
  #46  
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My Siemens injectors are supposed to be safe for flex fuels. I'm going to assume that the fuel pump is safe too. If it fails, I'll install a Walbro.

Speaking of the fuel pump, I'm impressed with how well it keeps up with the added demand of larger injectors and E85. I think I'm probably spraying 50% more than stock, and it doesn't seem to loose any pressure at all.

I didn't do anything special when I switched from E10 to E85. I just waited until the fuel gauge had no bars left, then filled up with E85. Of course, the result was a mix of probably 70% Ethanol (E70?), which required less fuel at full throttle. That made it to where I had to do more touchups on my tune when I filled up the next time with E85. I'm sure I'll have to do something similar with I go back to E10.

My guess is that I'll have to have 4 calibrations. Obviously 2 calibrations would be for E10 and E85, but I think I'll also need 2 other calibrations that I use for the transitional tanks (ie. E70 and E20).
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Old Oct 4, 2010 | 07:38 AM
  #47  
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BTW, I appreciate the info, DFWs2k. I really hope you are right that the fuel lines and gaskets will be safe for E85.

One thing that I should mention about the safety of driving on a mix of E10 and E85 is that the ECU does fine in closed loop, as long as you don't restrict the S Trim values. It's really just in open loop that you would need to make sure you have a decent fuel map.
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Old Oct 4, 2010 | 09:52 AM
  #48  
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Some Nissan's are Flex fuel, and no Honda (USDM) was marked "OK" for E85. I thought E85 was corrosive to rubber lines - thus the need to switch to silicone or hardlines...
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Old Oct 4, 2010 | 10:35 AM
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Inline4's last post on the forum was nearly 2½ years ago. I doubt he is even reading this anymore... Why are we talkiong about this?

Oh yeah, Gernby... LMAO
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Old Oct 4, 2010 | 10:41 AM
  #50  
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Originally Posted by LMB2000,Oct 4 2010, 01:35 PM
Inline4's last post on the forum was nearly 2½ years ago. I doubt he is even reading this anymore... Why are we talkiong about this?

Oh yeah, Gernby... LMAO
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