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
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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.
     
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  2. Noobz347

    Noobz347 Stangnet Facilities Maint Tech... Er... Janitor
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    42 lb/hr injectors unless you're planning on running E85. Then the 60s.
     
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  3. madspeed

    madspeed Colonel Mustard
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    Whatever you get, you'll have two spares

    :rolleyes:
     
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  4. madmike1157

    madmike1157 the humor is still lost on me
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    Really? Every calculator I used recommended at least 60 pounders.
     
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  5. madmike1157

    madmike1157 the humor is still lost on me
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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:
     
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  6. madspeed

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

    madspeed Colonel Mustard
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  8. 7991LXnSHO

    7991LXnSHO Well-Known 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.
     
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  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
     
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  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
     
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  11. elarm1

    elarm1 Active Member

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    Where you getting the 42 pounders from?
     
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  12. A5literMan

    A5literMan Mustang Master

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

    Decipha Member

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  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
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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
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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?
     
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  17. A5literMan

    A5literMan Mustang Master

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    X2
     
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  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
     
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  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
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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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