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Old 12-07-2004, 08:58 AM   #1
EA82TRally
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Default Higher Flow Side Feed Injectors

This might be a kinda stupid idea, but I was searching the internet for fuel injectors and happened to notice something. I took a look at some fuel injectors for an SR20DET(side flow injectors) which flow somewhere in the ballpark of 370cc's. I was just wondering if these could be a possible alternative to the tiny fuel injectors that EA82T's come with, and to also see everyone else's input on the whole idea. It seems like they would work because the mounting is, or looks the same. And hypothetically speaking, I figure as long as I use the factory(240SX) fuel injector plugs, and they are the same impedance, everything should work. But since I don't think that I'll be getting ahold of any SR20DET injectors any time soon, I figured that 240SX injectors might do the trick. Right now, I can easily get ahold of some stock 240SX(side feed design[red] KA24DE) injectors from a friend of mine since they are just laying around in his garage. They look nothing like what is in the picture on this site:CLICKY They look almost identical to the SR20DET injectors on the aforementioned site, except for the fact that they are red instead of blue. I am seriously thinking of getting these injectors and seeing if they will work. What do you guys think?

Thank you for your input.

Patrick
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Old 12-12-2004, 12:57 AM   #2
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How do you plan to tune for the extra fuel? I don't think they will work, I have heard they can be used on the Legacy turbo with a spacer under them. If that is true they won't work for you.
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Old 12-12-2004, 01:34 AM   #3
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FWIW the nissan/NISMO injectors are a direct swap for the new STI side feeds, so if the STIs fit in yours so will the Nissan/NISMOs, good luck!
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Old 12-12-2004, 06:38 PM   #4
Kevin Thomas
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Default Hrrmmm

I think I have a set of Nissan injectors in my garage as well as a set of EA81-T (or EA82-T) injectors. Are the EA81-T and EA82-T injectors the same?

I'll try to line them up together tomorrow or Tuesday if I get a chance and take some pics. Should be interesting.
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Old 12-13-2004, 07:17 AM   #5
Kevin Thomas
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Just got home from work. The pic isn't the best but it's all I can do for now *sleepy*. The pic is of two 1.8ltr RX turbo injectors vs Nissan SR20DET injectos. I purchased these injectors for my Outback Sport when it was turbocharged but I never had them installed. The 1.8ltr RX turbo injectors were for a turbo Subaru XT6 project I was going to do but it never got completed due to $$$ constraints.

The 1st and 3rd injectors are the RX turbo injectors while the 2nd and 4th injectors are from the Nissan.
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Old 12-26-2004, 12:33 PM   #6
THAWA
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Quote:
Originally Posted by Kevin Thomas
Just got home from work. The pic isn't the best but it's all I can do for now *sleepy*. The pic is of two 1.8ltr RX turbo injectors vs Nissan SR20DET injectos. I purchased these injectors for my Outback Sport when it was turbocharged but I never had them installed. The 1.8ltr RX turbo injectors were for a turbo Subaru XT6 project I was going to do but it never got completed due to $$$ constraints.

The 1st and 3rd injectors are the RX turbo injectors while the 2nd and 4th injectors are from the Nissan.
To get back on track, those RX injectors look strikingly familiar. To what you ask, to 84-85 300zx injectors: http://cgi.ebay.com/ebaymotors/ws/eB...category=33554

I believe that's the VG30E(T) engine. Don't quote me on that though. Apparently they only flow 160cc/min NA and 259cc/min Turbo, so I'm not sure how much of an upgrade it would be to go with those. However, you could always look at what the Z guys are doing for upgraded injectors and follow suit.
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Old 12-13-2004, 08:52 AM   #7
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Well, maybe it was just a fleeting thought.

But, on a lighter note, I did find some adapters that MSD makes that will allow different injectors to be used(but require barbed ends to be added to work with factory fuel lines). Check them out:Straight Fuel Delivery Top Mount

**Note: Go to MSD Fuel Management; then go to Flexible hose mounting, and click; then look for part # 2140.**

I'm not quite sure how I would go about tuning higher flow injectors, but I'm pretty sure I can figure that part out when the time comes. I don't think that using injectors that flow 220-270cc's would make that big of a change at idle, considering that the factories flow 180cc's. If I'm incorrect in this theory, please correct me, but keep in mind, when I start this project I will be changing the turbocharger and exhaust system in favor of units with better and higher flow characteristics as well.
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Old 12-14-2004, 12:54 AM   #8
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Quote:
Originally Posted by EA82TRally

I'm not quite sure how I would go about tuning higher flow injectors, but I'm pretty sure I can figure that part out when the time comes. I don't think that using injectors that flow 220-270cc's would make that big of a change at idle, considering that the factories flow 180cc's. If I'm incorrect in this theory, please correct me, but keep in mind, when I start this project I will be changing the turbocharger and exhaust system in favor of units with better and higher flow characteristics as well.
well yes it should go without saying that you will need some kind of engine managment to scale the injectors with or you will just be running way to rich, if running at all, and probably losing power. Though the cheap trick on this is to get a MAF housing sized to match the the injectors, meaning if the injectors flow 50% more and the MAF housing is exactly 50% larger(in volume not size) than the ECU correction will be at or close to 0
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Old 12-14-2004, 07:15 AM   #9
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Legacy turbo injectors are 370ish cc
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Old 12-18-2004, 11:57 AM   #10
Scott F. Williams
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Impreza GC8 MAF housing resizing

Quote:
Originally Posted by Invisiguard
Though the cheap trick on this is to get a MAF housing sized to match the the injectors, meaning if the injectors flow 50% more and the MAF housing is exactly 50% larger(in volume not size) than the ECU correction will be at or close to 0
Wise words, oh Invisiguard. I'll just point out, however, that when you do this the ignition curve becomes overly-advanced due to the ECU "thinking" that the engine is at a lighter load. So, this can be a hazardous mod at worst and simply rough at best.
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Old 12-18-2004, 01:00 PM   #11
Kevin Thomas
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Quote:
Originally Posted by Scott F. Williams
Wise words, oh Invisiguard. I'll just point out, however, that when you do this the ignition curve becomes overly-advanced due to the ECU "thinking" that the engine is at a lighter load. So, this can be a hazardous mod at worst and simply rough at best.
Simply running higher octane gas could take care of this situation right?
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Old 12-20-2004, 01:39 AM   #12
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Quote:
Originally Posted by Scott F. Williams
Wise words, oh Invisiguard. I'll just point out, however, that when you do this the ignition curve becomes overly-advanced due to the ECU "thinking" that the engine is at a lighter load. So, this can be a hazardous mod at worst and simply rough at best.
ah indeed, good point
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Old 12-14-2004, 12:29 AM   #13
ThuotRDX
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I have been looking at nissan sidefeed 300zx injectors for my SVX project. The turbo legacy injectors should also be 370cc right?
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Old 12-14-2004, 10:59 AM   #14
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i was under the impression that pink side feeds were 390cc

browns like i have in my ej20g are 425cc

if any one has 550s ill trade my 425s
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Old 12-15-2004, 03:51 AM   #15
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I have heard from 360cc to 390cc, I think 370cc is the most often quoted.
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Old 12-20-2004, 01:48 PM   #16
sick1.8t
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its pretty common to use the sr20det injectors in the ej18's, since its a direct swap. the s13/s14 injectors are 370cc's, and the s15's are 440cc's.
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Old 12-24-2004, 07:05 PM   #17
subiekid
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If you are looking at 300zx injectors then you need the 95-96 style, you will also need 92-94 n/a legacy fuel rails. There is a big thread in the AFI forum started by Reddevil.
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