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Saab 350cc/min 33lb/hr for a 420a turbo

Posted by eleclipse99, Oct 21, 2011

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  1. eleclipse99

    eleclipse99 Proven Member

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    c, Europe
    hey guys, well i have 4 fuel injectors from a saab, they are 350cc/min 33lb/hr red tops, all i want to know is, if i can use them on my 420a with a Vortech SFMU,for 6psi DD and 8-9 psi on the track? or are they too big?

    here is the injectors specs.

    INJECTOR SPECS:

    Part number: 0280150431

    Brand: BOSCH

    Design: EV1 4 Hole Disc Type

    Connector Type: EV1

    Flow Rate 33 lb/hr

    Ohm: 12.0
     
  2. kongo

    kongo Proven Member

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    new orleans, Louisiana
    You can use your stock for those levels of boost.
     

    387  0

    1999 Mitsubishi Eclipse N/T
    · 2G DSM
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  3. Leonthefaded

    Leonthefaded Supporting VIP

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    Ewa Beach, Hawaii
    Dumb for me to ask, but can you break down what all those numbers mean?
     
  4. VelocitàPaola

    VelocitàPaola Moderator

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    Ft. Lauderdale, Florida
    Which numbers?
     

    2K  21

    1995 Mitsubishi Eclipse N/T
    manual · 2G DSM
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  5. Leonthefaded

    Leonthefaded Supporting VIP

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    Ewa Beach, Hawaii
    The numbers /hr thing?

    Sent from my T-Mobile G2 using Tapatalk
     
  6. VelocitàPaola

    VelocitàPaola Moderator

    4,908
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    Joined Jun 14, 2005
    Ft. Lauderdale, Florida
    cc/min and lb/hr are units that describe flow rate. The larger the number, the greater the flow.

    cc/min = 10.5 * lb/hr (roughly)

    so...

    ~350cc/min = 10.5 * 33lb/hr
     

    2K  21

    1995 Mitsubishi Eclipse N/T
    manual · 2G DSM
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  7. gusu

    gusu Proven Member

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    Keizer, Oregon
    What turbo are you going to be running with those? In case you don't know, a large enough turbo can over run those at even 8psi.

    Let's say you wanted to do it on a EVO 3 b16g you wouldn't be able to run the wastegate pressure with those. That turbo on 450cc injectors is pretty much maxing them out at 10-11 psi.

    If you were going to run something like a 13g or a t-25 I don't see 8-10 psi being a big deal, but I may be wrong because I don't know the flow rate for either turbo well enough to give a good solid answer. I can how ever give you an idea of how to find out.

    Vfaq, has all the MHI turbos flow rates listed on their site. There is a calculater that calculates airflow by CFM, and then you put desired boost level and your injector size and fuel pressure. If i remember right it gives you the injector duty by a rough estimate. Hope that helps.
     
  8. Leonthefaded

    Leonthefaded Supporting VIP

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    Thank you for clearing that up. I need to learn this kind of information in the long run

    Sent from my T-Mobile G2 using Tapatalk
     
  9. gusu

    gusu Proven Member

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    Keizer, Oregon
    If you don't mind me asking, what turbo are you wanting to run and what kind of power goal do you have?
     
  10. eleclipse99

    eleclipse99 Proven Member

    52
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    Joined Jan 14, 2010
    c, Europe
    thank you guys for the reply.

    so, i can use stock fuel injectors and the SFMU? or i don't need the SFMU? the reason i want to run the SFMU is because, i want to be safe and not brake nothing, because my engine is stock on everything
    i want to run a Garrett, compressor .70 a/r TO4E cover i believe is a 57 trim. turbine side maybe .63 a/r Looks to be a T31 turbine wheel

    right now i'm running 4psi :p but i want to run 6-7psi DD safety
     

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