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M90 rebuild (rudy)

Discussion in 'Need for Speed!' started by jd4242, March 30, 2013.

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    1. Centaurus5.0

      Centaurus5.0 Elite 5.0L Fiddler

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      You would need approximately 35% more fuel when using E85 over pump gas. You could need up to 20% more volume (based on fuel pressure) if your using E50 to feed the same hp than if you were using gasoline.

      The Ford Racing catalog has a good write up on BSFC.

      The quality of the fuel can also cause tuning nightmares. You may want to purchase something like this to make sure your getting what your tuning for. Consistent fuel quality is hard to come by these days and even vary based on the time of year.
      https://www.summitracing.com/parts/qft-36-e85

      ::Fixed Typo::
       
      Last edited: November 29, 2017
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    3. jd4242

      jd4242 Elite Explorer

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      Thats what i use to mix to e50 and i think we are at about 18-20% more fuel on e50 than my 93tune
       
      Last edited: November 28, 2017
    4. Centaurus5.0

      Centaurus5.0 Elite 5.0L Fiddler

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      Ah! Okay.

      FYI, your build is way out of my league and I'm just going off what I've read from others on the net. All I can really add (which you already knew) is you need more volume when using ethanol and fuel quality becomes a big issue when dealing with high boost.

      When you get this figured out, you will be crowned King of the Four Liters for sure! (If 4pointslow lets you) lol :thumbsup:
       
      Last edited: November 29, 2017
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    5. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      Yeah, that's a good graph and for E85 taking so much more flow it needs more pump for sure.

      I do wonder about the boost/psi rise though, isn't that 1:1, so 15psi boost plus the base 60psi, is 75psi? I think you're smart to use that higher pressure with the ethanol and plenty of boost.

      I haven't decided if I want to run the base at 40psi or 60psi, with the return system. I figured I'd let the tuner make me lean to one versus the other.
       
    6. jd4242

      jd4242 Elite Explorer

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      I actually set my ""base pressure"" of 60psi with the truck running so i gain psi with each drop in vacuum so im at about 77ish before boost comes in and running 18lbs boost..with a better pump i could probably turn that base down to 40ish but ideally you want about 70-80psi under full boost or thats where my tuner suggest
       
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    7. jd4242

      jd4242 Elite Explorer

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      But i finally caught a break..we have been looking for a new house and we finally got approved yesterday! !!

      Guess who FINALLY got his own garage and a big ass barn/shed/workshop...this im super excited about,i can finally get all my crap outa storage and outa my old mans garage. .
      ISy7gp33983nzh0000000000.jpg ISmquf4csdrvbi0000000000.jpg
       
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    8. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      That looks awesome!!!
      You buying it?
      Now you can work on your trucks in the warm comfort of your garage.
      Congratulations!
       
    9. jd4242

      jd4242 Elite Explorer

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      Still renting for now..gota get the trucks done before thinking about buying a place
       
    10. 4pointslow

      4pointslow Explorer Torture Tester Elite Explorer

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      The good thing about renting is if the neighbors complain about you being too loud, you can move away from them!
       
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    11. jd4242

      jd4242 Elite Explorer

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      Fortunately we are in a zone that has no noise ordinance. So they can complain all they want..lol
       
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    12. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      That looks great, I hope you enjoy that new space.
       
    13. vroomzoomboom

      vroomzoomboom Elite Canuck STOCK SUCKS! Elite Explorer

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      sweet! so whens the moving out party?
       
    14. jd4242

      jd4242 Elite Explorer

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      December 29-jan2...lol we will be kid free pretty much that whole time!!
       

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    15. vroomzoomboom

      vroomzoomboom Elite Canuck STOCK SUCKS! Elite Explorer

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      not if i was there. im the biggest kid i know, with a really cool toy, and a credit card
       
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    16. jd4242

      jd4242 Elite Explorer

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      Hahah yea the big kids get to play!!
      We got one of these also,i feel like sometime that weekend im gonna end up past out in it!!
      ISi7pfwg7elmxe0000000000.jpg
       
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