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Subject: "need some advice on injector size with 2.4 motor ." Previous topic | Next topic
onebaddsm98Feb-01-04 10:15 AM
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#64395, "need some advice on injector size with 2.4 motor ."


          

I was wondering if u guys could help me out with this. Ok right now im running a 2.4 motor with 30lb injectors and a SFMU. I was thinking of buying 440's, but then I thought since I have a bigger motor maybe I should go with the 525's. My buddy mikeD says it won't idle but I just want some more opnions. BTW my 30lbs injectors doesn't get me past 6 pounds of boost. I want more BOOST!!!

  

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Replies to this topic
RE: need some advice on injector size with 2.4 motor ., TeamXtremeRS, Feb-01-04 04:20 PM, #1
RE: need some advice on injector size with 2.4 motor ., onebaddsm98, Feb-01-04 04:46 PM, #2
      RE: need some advice on injector size with 2.4 motor ., DSMRoadster, Feb-01-04 05:24 PM, #3
           RE: need some advice on injector size with 2.4 motor ., widebodied, Feb-01-04 06:23 PM, #4
                RE: need some advice on injector size with 2.4 motor ., onebaddsm98, Feb-02-04 10:04 AM, #5
                     RE: need some advice on injector size with 2.4 motor ., Skrilla, Feb-02-04 12:36 PM, #6

TeamXtremeRSFeb-01-04 04:20 PM
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#64407, "RE: need some advice on injector size with 2.4 motor ."
In response to Reply # 0


          

Originally posted by onebaddsm98
I was wondering if u guys could help me out with this. Ok right now im running a 2.4 motor with 30lb injectors and a SFMU. I was thinking of buying 440's, but then I thought since I have a bigger motor maybe I should go with the 525's. My buddy mikeD says it won't idle but I just want some more opnions. BTW my 30lbs injectors doesn't get me past 6 pounds of boost. I want more BOOST!!!


You should be able to get plenty more boost out of the 30lb injects than 6 psi, unless you are running a very, very large turbo. I currenty run 12-13 psi on the 30 lb injects, with the S16G on the 2.0. That .4 litre won't make that big of a difference. Do you know what your fuel pressures are under boost/idle?? How is your SFMU setup?? Fuel pump??

You prob won't be able to run 525's, but possibly if you run very low idle fuel pressures, and use a SAFC to lean it out a lot..I personally wouldn't do that though..


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onebaddsm98Feb-01-04 04:46 PM
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#64408, "RE: need some advice on injector size with 2.4 motor ."
In response to Reply # 1


          

well my fuel pressure im not sure cause i havent installed my gauge yet. I have a walbaro intank, and I have the second largest disk in the sfmu. my egt's skyrocket around 4-5 grand.

  

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DSMRoadsterFeb-01-04 05:24 PM
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#64409, "RE: need some advice on injector size with 2.4 motor ."
In response to Reply # 2




          

Originally posted by onebaddsm98
well my fuel pressure im not sure cause i havent installed my gauge yet. I have a walbaro intank, and I have the second largest disk in the sfmu. my egt's skyrocket around 4-5 grand.


use the largest disk, silver spring and bleed valve setup with the sfmu. Adjust the idle screw until you hear the engine run smoothly. Defintely install a fp guage to see where your fuel is at.

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widebodiedFeb-01-04 06:23 PM
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#64415, "RE: need some advice on injector size with 2.4 motor ."
In response to Reply # 3




          

well im running 440s, we should be able to push 18lbs of boost on those, without probs, and good tuning. might wanna go with a second inline fp

and what does 6lbs feel like on the 2.4?
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onebaddsm98Feb-02-04 10:04 AM
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#64458, "RE: need some advice on injector size with 2.4 motor ."
In response to Reply # 4


          

so i guess i should go with the 440's then? I was wondering what bryden is running in his car? he must be running big injectors to hit 20 pounds daily. oh yeah 6 pounds is is nothing really. I guess im just used to it.

  

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SkrillaFeb-02-04 12:36 PM
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#64472, "RE: need some advice on injector size with 2.4 motor ."
In response to Reply # 5


          

440cc will run 22lbs with enough line pressure so yes your 440cc will be fine. I'd upgrade your fuel system if it is basic right now. NO the 4/10 displacement isn't enough for the bigger 525 especially since it still runs from a modified Map off the smaller 2L engines of 235cc inj, but the engine CAN run them at -50 (AFC) and SFMU, I'm wondering though with you actually running the 2.4L why you're having trouble with 6 pounds on 30lbs inj emoji

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