Im trying to finud some 700cc/ish injectors for my car. But i can only find sets of four why deos this have to be so hard?!!!! Deos anyone know were to get 2 i repeat that 2 ******* injectors? I thought were in the age of information, but when it comes to our cars it seems they forgot us.

 

ebay maybe? i dont really know....you might be able to buy individual injectors on there.

 

It's hard because the stock carbs if clean give it as much air as it needs (12A). It's only a 1.1 there is only so much O2 and fuel needed...

 

looked on ebay only sets of four. typed in injectors on google and tryed the first like 40 hits and gave up. thus why im asking stupid questions here. lol

 

Yea my answer is bad anyway. Don't get frustrated.

As long as your exhaust is sweet and carbs are clean, engine well lubed. It won't need injectors to hit redline fast...

 

sorry to hear your search for injectors went bad....you could always buy a set of 4 then sell the extra 2?

 

Yea I am getting confused because he didn't say it was 13b?

I was thinking he wanted custom injection for 12a.

 

arent the stock injectors on the GSL-SE 680cc? I could be totally wrong about this though...tahts why im asking

 

yeah they're 680cc thats why im looking fo 700-750cc. Because someone posted a link about cheap ITB's so im gunna try them out. They look pretty cool but you have to get the rails drilled. So im hoping to come in under $1750 for them and the Magasquirt. I have a webber off a toyota that im selling to my buddy for $800 that i polished and and had anodized so that will take care of some of the cost.

 

heres a link

http://www.extrudabody.com

 

how do you think a stock GSL-SE would run with 700cc injectors compared to the 680's?

 

I dont really know but im gunna race mine quite a bit so its gunna have a little porting but not a whole lot. I was gunna go to a bridge port but decided not to. Just going to do a street port with full race exhaust/intake systems.

 

yeah my plans for this n/a motor is just full 2.5" exhaust, s4 intake, 2nd gen coil mod, and a gilmer drive pulley kit.

 

Why not use the SE injectors? You know, that small difference in flow between SE injectors and the values that you list can easily be made up by playing with the fuel pressure. Also, have you calculated what injector size you actually need or are you just guessing based on what the SE makes powerwise vs. what you are shooting for?

Also, consider ITBs that hold 4 injectors and run 4 smaller injectors (2nd gen injectors for instance). This way, you have better control of fuel at idle/low load, but have a higher capacity at high loads than what a pair of SE injectors can handle on their own.

Just some things to think about.

 

1. SE injectors are ugly
2. Im leaning more towaords 750(70cc difference)
3. Go to http://www.extrudabody.com they use only 2 injectors not 4 like FC's

 

like he said with two big injectors your idle/low load is going to suffer

 

idle? what the hell is that? idle dont bother me much. my 86 ranger had a full tilt mini-stock engine in it with dual webbers and 600 lif cam wouldnt idle below 1100 and power till 3500

 

Hmm.. 1st I've heard of picking injectors based on looks...

Anyway, try here:
http://www.injector.com/fuelinjectors.php

They list individual injectors. Also tweakit sells individual injectors, but they are in Aussie land. Also, if you see a set of 4 that you like, call them up. I'm sure you could buy in sets of two. They list them in sets like that because most cars have at least 4 injectors (unless throttle body injection). This is why SE injectors are so darn big stock (only 2).

Really, 4 injectors give you the best of both worlds, but if you are set on that set of ITBs, so be it. It won't really be a prob with the idle with the 750cc injectors (although smaller injectors would still have better control). The main problem having 2 big injectors is if you decide to go for more power later. You'll need bigger injectors and then the idle/low load will really suffer. Having 4 injectors give so much more flexibility.

 

K I think someone needs a quick education,

1) Those bodies are pretty bad if you ask me and i'm sure if you ask anyone with ITB's the desing on the air inlet couldn't be anyworse for directing air.

2) 45mm is too small for any ported engine, you'll be choking the top end

3) For injectors, you're better off getting the high impedance injectors like the ones found here on ebay. Thats 2 of them 720cc ... he also has 800cc and a few bunch more.

http://cgi.ebay.com/ebaymotors/2-Maz...3363QQtcZphoto

 

sweet dude thanks just what i was looking for. as for the looks part the factory ones id have to clean and they still woulnt look as good or perform as good as new ones for the money they want fo 750s id rather have one less thing to do.

whats funny is that i tried injectors.com and of course i had to be one letter off oh well.

Yeah i know 4 injectors are better but its just not worth the extra money for an itb with 4 injectors for what i whant the car for. maybe a couple of years when i retire my SE engine and go to an s4 or s5 turbo ill definately put a better itb but for now i dont need it

 

thanks dj55 i didnt notice those were low impedance. so what size would you recomend for a bore 47 or 50mm?

 

47 up depending on how big the porting is. I personally bought the 47 from Jimmy at fuji racing and they're fairly priced. The fuel rail already comes to accept mazda injector too so no need to drill and he supplies really nice air horns.

My link to them:

https://www.rx7club.com/showthread.p...ht=fuji+racing

Total price i paid for them is 705$ shipped to Canada.

 

are there any advantages of running a sidedraft compared to a down draft? or is it just were you want to run you intake?

 

The one that fuji offers is only availble to be bolted on a side draft. As for advantages and disadvantages the IDA supposebly makes more peak HP, but side is gives you more torque due to its longer intake runners. Also its easier to fit under the hood using a sidedraft ... especially if you have long air horns

 

makes sense