REVscene - Vancouver Automotive Forum


Welcome to the REVscene Automotive Forum forums.

Registration is Free!You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today! The banners on the left side and below do not show for registered users!

If you have any problems with the registration process or your account login, please contact contact us.


Go Back   REVscene Automotive Forum > Technical Discussion > Advanced Forced Induction & N/A Engine Tuning

Advanced Forced Induction & N/A Engine Tuning This forum is brought to you by Racing Greed in Port Coquitlam.
Supercharger vs Turbocharger vs NA? Hondata vs Megasquirt? 94oct vs 87oct? Through technical discussion, let's find out what will the best option for you...

Reply
 
Thread Tools
Old 10-08-2009, 10:55 PM   #1
RS Lurker, I don't post!
 
Join Date: Oct 2009
Location: home
Posts: 3
Thanked 0 Times in 0 Posts
injector size for turbo

heyo I have #28 (294cc) injectors and #19 (192cc) injectors im running a 50 trim turbo and only 6psi, but at the moment 4psi until i fix the tune, anywho what should I use, should i use the small or bigger ones. Im running a not so good tune on a 2.8mfi do you think the #19 will be alright with my application

thanx

the #28 are in the car its running a little rich and bogging, should try both and see which ones i like, I do have a AFR
_________________
Advertisement
tbell is offline   Reply With Quote
Old 10-09-2009, 02:18 PM   #2
2x Variable Nockenwellen Steuerung
 
Join Date: Oct 2002
Location: N49.2 W122.1
Posts: 6,176
Thanked 1,174 Times in 704 Posts
You also need the duty cycle.. also what kind of ECU you are running.. or what kind of car you are running.

In the end, you need to know the turbo size.. cfm etc.. so you can optimize for the best hp for the volume of air you are pushing.. so a lot of specifications and some math required.
godwin is offline   Reply With Quote
Old 10-10-2009, 02:27 PM   #3
Need my Daily Fix of RS
 
Mephology's Avatar
 
Join Date: Feb 2003
Location: B.C.
Posts: 274
Thanked 5 Times in 2 Posts
I would go with the bigger injectors and a good tune. An experienced tuner can tune with the bigger injectors and still get a good idle and throttle response. Of course, this all depends on ecu, car... some other factors.
__________________
www.club-integra.net
Mephology is offline   Reply With Quote
Old 10-10-2009, 05:17 PM   #4
14 dolla balla & Bradford Chow aint got nothing on me!
 
Join Date: Oct 2006
Location: Vancouver
Posts: 624
Thanked 39 Times in 24 Posts
6psi? why even boost.
XtC-604 is offline   Reply With Quote
Old 10-11-2009, 12:29 AM   #5
Need my Daily Fix of RS
 
Join Date: Apr 2008
Location: GVRD
Posts: 256
Thanked 34 Times in 9 Posts
Some factory management systems have enough headroom as stock to support 5-7psi, that might mean 40+hp. Not totally pointless, but relatively.

I can say even 28's are entirely to small for basically any 4 cylinder turbo motor.
__________________
1983 Volvo 240 Wagon. S80 T6 Swap.
541whp/467wtq, SpeedPro Dynojet

Quote:
Originally Posted by dizzystar View Post
I am better than everyone, you, your brothers, sisters, fathers, moms, even your fucking dogs. I can drive all drivetrain platforms and all types of industrial machinery, and I got a fucking nuclear sub, yeah thats right, a fucking nuclear sub.

fuck you, and all your shit.

this is revscene in it's entirety. /thread.
Captain Bondo is offline   Reply With Quote
Old 10-12-2009, 11:22 PM   #6
Proud to be called a RS Regular!
 
Join Date: Nov 2008
Location: Vancouver
Posts: 120
Thanked 8 Times in 6 Posts
He has a 2.8liter v6
hoping to make something like 100hp over stock

I told him 28 lbs aren't very big anyways but other opinions are always nice I suppose..
Johnrb is offline   Reply With Quote
Old 10-15-2009, 12:48 AM   #7
Wunder? Wonder?? Wander???
 
Join Date: Mar 2006
Location: Coquitlam
Posts: 214
Thanked 0 Times in 0 Posts
750CC and tuned with something other than a piggyback. You need to have the injectors scaled properly and have proper fuel control, otherwise kiss your motor goodbye.
AdamCo is offline   Reply With Quote
Old 10-16-2009, 02:37 AM   #8
RS controls my life!
 
Muskys SS's Avatar
 
Join Date: Jan 2003
Location: Langley
Posts: 799
Thanked 284 Times in 52 Posts
28# injectors on a 6 cylinder turbo car will be good for about 250hp. However you can't just swap around injectors without calibrating the ecu. The best way to choose fuel injector sizes is to pick the smallest size injector that will satisfy the power your car will reach. It will make it much easier to tune. You definately don't need 750cc injectors for the power you're going to be making.
__________________
S14 240SX: 2JZ swap/w BorgWarner S366 Turbo/hks264's/Haltech E11 / 626rwhp and 523rwtq @24 psi
Shawn
Muskys SS is offline   Reply With Quote
Old 10-17-2009, 01:54 AM   #9
Wunder? Wonder?? Wander???
 
Join Date: Mar 2006
Location: Coquitlam
Posts: 214
Thanked 0 Times in 0 Posts
Oh yes, I failed to notice 6 psi. I assumed with a 50 trim there would be loftier ambitions. 6 PSI with the 50 = snooze.
AdamCo is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -8. The time now is 04:27 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
SEO by vBSEO ©2011, Crawlability, Inc.
Revscene.net cannot be held accountable for the actions of its members nor does the opinions of the members represent that of Revscene.net