60 Lb Hr Injectors?

Discussion in '1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-' started by madmike1157, Jan 31, 2014.


  1. madmike1157

    madmike1157 the humor is still lost on me SN Certified Technician

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    Thinking about injectors today. I want to be sure that I get an injector big enough for my hp aspirations, that will not be too big as well. I'm sure that there a injector size calculators
    out there that can help me answer this question but I'm gonna throw it out here to be extra thorough.

    250 c.i.
    16/18 psi
    6 cyls
    450 whp @ 6000 RPM.
  2. Noobz347

    Noobz347 Stangnet Facilities Maint Tech... Er... Janitor Admin Dude

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    42 lb/hr injectors unless you're planning on running E85. Then the 60s.
  3. madspeed

    madspeed Colonel Mustard Mod Dude Founding Member

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    Whatever you get, you'll have two spares

    :rolleyes:
  4. madmike1157

    madmike1157 the humor is still lost on me SN Certified Technician

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    Really? Every calculator I used recommended at least 60 pounders.
  5. madmike1157

    madmike1157 the humor is still lost on me SN Certified Technician

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    Naaah. You can buy them individually, or in sets of 6. ( They do make engines with less than 8 cylinders..........You know that.............Right?):shrug:
    Noobz347 likes this.
  6. madspeed

    madspeed Colonel Mustard Mod Dude Founding Member

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    Yeah, its us screwballs that keeps the rest of the world in check. Me and my 5 cylinder Volvo...
  7. madspeed

    madspeed Colonel Mustard Mod Dude Founding Member

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  8. 7991LXnSHO

    7991LXnSHO Active Member

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    Related question - how big of a fuel cell and what pump will you run? Also, what is the limit on your fuel card? It sounds like the "eco" can be left off of your boost plaque.
  9. f8tlfiveo

    f8tlfiveo My wife likes my spool and blow-off valve.

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    I have 60's for my turbo setup which should be more than enough for my plans of 400-450hp with boost
  10. A5literMan

    A5literMan Mustang Master

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    You're running a Ms3 aren't you? From what I've read 60's would be ideal but you can make 42's work
  11. elarm1

    elarm1 Active Member

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    Where you getting the 42 pounders from?
  12. A5literMan

    A5literMan Mustang Master

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    Well obviously not getting them new. Lol.
  13. Decipha

    Decipha Member

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    Noobz347 likes this.
  14. Decipha

    Decipha Member

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    btw, just put some 80's in it and be done
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  15. madmike1157

    madmike1157 the humor is still lost on me SN Certified Technician

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    The fuel cell I have is the stock tank, sump'd. I'm using a Mallory marine external pump. Fuel card?
    MS II w/a version 3.0 processor. I'm gonna go with the 60's. The last turbo project had me w/ three sets of injectors after I had to keep upgrading them to keep the injectors from maxing out. Not gonna do that this time.

    There is this guy on eBay that is selling a new set of Bosch style injectors rated at 60 lbs hr. for $299.00 for 8. I think he sells 6 cylinder sets for 250.00 they supposed to be new, and flow matched to some crap like 2%, I think I'll give them a try.
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  16. madspeed

    madspeed Colonel Mustard Mod Dude Founding Member

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    Great ittle page of info there-. Curious as to why injectors support less hp on 4 and 6 cylinders versus same injectors on a v8?
  17. A5literMan

    A5literMan Mustang Master

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    X2
  18. RangerJoe

    RangerJoe Advanced Member

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    I would assume it is becaus there are six injectors doing the work of eight. A 400hp v8 would need each injector to support 50hp each. If you had a v6 with the same 50hp injector, you could only support 300hp.

    Now, this is based on my crazy reasoning in my head. Anyone care to confirm or denying this logic?

    Joe
  19. Decipha

    Decipha Member

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    correct
    if you have a v8 engine making 400 hp, each injector only needs to support 50hp

    If you have a 4cylinder engine making 400hp, each injector will need to support 100hp

    does that help any?
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  20. Noobz347

    Noobz347 Stangnet Facilities Maint Tech... Er... Janitor Admin Dude

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    A point that I missed when I replied above. When I said 42s for 450+ hp, that was assuming 8 cylinders. 450 HP requires just about the same amount of fuel regardless of cylinder numbers. It would easily take 6 x 60 lb injectors, to equal 8 x 42 lbs. So you're probably correct Mike.

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