hey guys i was wondering what size injectors was the best bang for horsepower i am lookin at 550cc injectors but i think that may be too high of cc's.

thanks

i should know my **** b4 i post lol edit down below.

This post has been edited by devilsden97: Apr 28, 2007 - 12:10 PM

>
Best bang for horsepower? There is no such thing.

What is your power goal?
Your power output depends on the injector size.
Too small, you will max out the injectors.
Too large, you will have trouble controlling them at idle.
Your turbo/engine setup will determine how much horsepower you are capable of.
Then you go from there and figuring it out what size injectors do you need to attain that goal.

Here are some good reads.
http://www.2gnt.com/www/corbin/chooseinj.html
http://www.rceng.com/technical.htm
http://www.wolfkatz.com/articles.php





This post has been edited by Gary: Apr 28, 2007 - 12:11 PM

im an idiot

"next was injectors. there is ALOT of confusion here, where to find them, what they look like, what size are they really ect.
what we're looking for is the MKIII N/A supra injectors. not turbo injectors, not alltrac injectors, N/A MKIII supra. theyre a lime green color, and 315cc. just to clear up another point of confusion, they do NOT become bigger injectors in our cars. the fuel pressure between the n/a supra and the 5s is the SAME."

from presure2's big 5sfte post.


edit:

Basic Parts List
3S-GTE Exhaust Manifold
3S-GTE CT-26 Twin Entry Turbocharger
3S-GTE Downpipe
3S-GTE Oil Pan and Oil Drain Lines
3S-GTE 2 Bar MAP Sensor
Custom Coolant Lines
Custom Oil Feed Line and steel "T" Fitting
MKIII Supra N/A 7M-GE Fuel Injectors <- The best injector upgrade(315cc rating)
Spark Plugs such as Denso IK22 or NGK BKR7EVX-11 <- These must be regapped to All-Trac gap, which is .030!

edit II:

Presure2's build thread:
http://www.6gc.net/forums/index.php?showtopic=23187&st=0

5sfte walkthrough with many builders:
http://www.6gc.net/forums/index.php?showtopic=5574

This post has been edited by devilsden97: Apr 28, 2007 - 12:12 PM

>
if you read presure2's entire 5sfte thread you'll see that later he says that the 315cc injectors are crap and goes with some 460cc RX7 injectors. those are the injectors I'm going with on my set-up.

anyway. unless you are going turbo there is no need for bigger injectors. in fact the 5sfe runs a little rich and more power could be had from getting a piggyback and taking fuel out rather than dumping more in.

This post has been edited by 6strngs: Apr 28, 2007 - 1:17 PM

>

yeah but if you read the rest of pressure's post it says he upgraded to 460 rx7 injectors and i didnt know if 550 would be to high but obviously 315 is too small

^there u go...i havnt read the thread through extensivly, I dont plan to boost my car, or swap it. I figure id post what i saw quickly, then post where i got it, so if he wanted to, he could look through it.

good luck on your swaps, and turbo projects guys.

>


thanks for the support and i tried fiinding some rx7 injectors have u had any luck

http://www.car-stuff.com/mmparts/mazda-rx7...l_injector.html

http://www.rx7store.net/Fuel_Injectors_s/90.htm

http://www.rx7.com/store/rx7/fdfuel.html
^this one i actualy found 550cc rx-7 injectors on, which was closest to the 460cc that were mentioned.

The other sites have much higher output injectors, from 700 to 1600cc units.

also, ebay is your friend...(somtimes...other times its like your buddy that sleeps with your gf lol)

This post has been edited by devilsden97: Apr 28, 2007 - 1:27 PM

ebay

and make sure they are part #195500-2010. I think there are two different versions of the 460cc. I believe one is high impedence and one is low.

This post has been edited by 6strngs: Apr 28, 2007 - 1:29 PM

>

tnahks i also found them on here fiveomotorsport.com for 272.00 new

>
are you going to be turbocharging your celica?

EDIT: nevermind.. I just realized the title of this thread was "Injectors for turbo" lol

This post has been edited by 6strngs: Apr 28, 2007 - 8:31 PM