LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

which injectors, tb, and afpr to use?

Thread Tools
 
Search this Thread
 
Old 01-30-2005 | 07:30 PM
  #1  
red 95 z28 lt1's Avatar
Thread Starter
Registered User
 
Joined: Apr 2003
Posts: 664
From: long island N.Y.
which injectors, tb, and afpr to use?

hey i just recently did a le2 package on my car with jet hot lts and tr6 spark plugs, i am going to send my pcm out to get tunned for 32 lb injectors what i want to know is what is a good company for injectors, 58 mm tb and a ajustable fuel pressure regulater, i would like to keep the price down a bit, also should i raise the fuel pressure when i put the biger injectors on with a tune?
Old 01-30-2005 | 07:52 PM
  #2  
96capricemgr's Avatar
Registered User
 
Joined: Feb 2004
Posts: 4,800
Re: which injectors, tb, and afpr to use?

Leave the fuel pressure alone keep the stock regulator. On the injectors most people like the SVOs don't think they have a 32lbs. but do have 30lbs and 36lbs..
Old 01-30-2005 | 07:58 PM
  #3  
96capricemgr's Avatar
Registered User
 
Joined: Feb 2004
Posts: 4,800
Re: which injectors, tb, and afpr to use?

I paging through todays topics I saw Racetronics post on their 32lbs. injectors, those would be a good choice too, maybe check with the tuner you plan too use and see if he has a preference.
Old 01-30-2005 | 08:20 PM
  #4  
94zgreenmachine's Avatar
Registered User
 
Joined: Feb 2004
Posts: 1,309
From: Oshkosh, Wisconsin
Re: which injectors, tb, and afpr to use?

I think Ford rates theres with a lower pressure anyhow, so wouldn't they flow more with our higher fuel pressure? I'll try to find where I read that.....
Old 01-31-2005 | 02:30 PM
  #5  
Injuneer's Avatar
Administrator
 
Joined: Nov 1998
Posts: 70,852
From: Hell was full so they sent me to NJ
Re: which injectors, tb, and afpr to use?

If you find some FMS or SVO injectors rated at 2.7bar (39.15psi) operating pressure, they will flow about 5% more than rated when you operate them at 3bar (43.5psi).
Old 01-31-2005 | 04:33 PM
  #6  
94zgreenmachine's Avatar
Registered User
 
Joined: Feb 2004
Posts: 1,309
From: Oshkosh, Wisconsin
Re: which injectors, tb, and afpr to use?

Beat me to it, but I had heard the svo's at 30lbs were closer to 32 for us LT1 guys so that is almost the 5% flow difference.
Old 01-31-2005 | 05:07 PM
  #7  
chy20k1's Avatar
Registered User
 
Joined: Mar 2004
Posts: 324
Re: which injectors, tb, and afpr to use?

Originally Posted by 96capricemgr
Leave the fuel pressure alone keep the stock regulator. On the injectors most people like the SVOs don't think they have a 32lbs. but do have 30lbs and 36lbs..
really? when i bought my racetronix kit for my 93 lt1, the stock fpr didnt hold it anymore. it went up to 53 psi with the vac line off. it was fine with my stock pump. thunderracing told me i needed an afpr. would a replacement stock one have held better than my old stock one did?
Old 01-31-2005 | 06:07 PM
  #8  
elisowski's Avatar
Registered User
 
Joined: Sep 2004
Posts: 271
From: Canfield, OH
Re: which injectors, tb, and afpr to use?

Does anybody have a part number for the 30 lb SVO's?

Would they be a better choice than Accel 36 lb/hr? I can do my own pcm tuning. Would the 30 lb/hr rating confuse the PCM and cause it to run rich? Or would it be better to use the SVO's and enter a 32 lb/hr value?
Old 01-31-2005 | 06:44 PM
  #9  
94zgreenmachine's Avatar
Registered User
 
Joined: Feb 2004
Posts: 1,309
From: Oshkosh, Wisconsin
Re: which injectors, tb, and afpr to use?

Summit Racing
FMS-M9593B302 Fuel Injectors, 30 lbs./hr., EV1-Type, Ford/Lincoln/Mercury, Set of 8
$219.88

I would set them for what they actually flow with out LT1. 32(31.5 lbs. to be exact) using 5% more flow at our operating pressure 43.5 psi
Old 01-31-2005 | 06:47 PM
  #10  
elisowski's Avatar
Registered User
 
Joined: Sep 2004
Posts: 271
From: Canfield, OH
Re: which injectors, tb, and afpr to use?

Thanks!
Old 01-31-2005 | 06:53 PM
  #11  
94zgreenmachine's Avatar
Registered User
 
Joined: Feb 2004
Posts: 1,309
From: Oshkosh, Wisconsin
Re: which injectors, tb, and afpr to use?

no problem
Old 01-31-2005 | 09:04 PM
  #12  
89385formula's Avatar
Registered User
 
Joined: Jan 2005
Posts: 1,114
From: New York
Re: which injectors, tb, and afpr to use?

I would stay away from the Accel injectors, from what I have heard they have some quality issues. Although I have also heard that the smaller injectors like 24's had more of a problem, I just wouldn't risk having a problem, especially since the SVO's are cheaper.
Old 02-01-2005 | 04:03 AM
  #13  
94zgreenmachine's Avatar
Registered User
 
Joined: Feb 2004
Posts: 1,309
From: Oshkosh, Wisconsin
Re: which injectors, tb, and afpr to use?

www.racetronix.com The 32 lb injector is a Delphi/Lucas injector. I bought the 37 lb injector for my 383. These things look great and they are a high quality injector. For an extra $20 you could have real 32 lb injectors without having to put anything with the "blue oval" on your car .....cause at least Ford circled the problem!
Old 02-01-2005 | 07:10 AM
  #14  
Racetronix's Avatar
Registered User
 
Joined: Oct 2001
Posts: 784
Re: which injectors, tb, and afpr to use?

Originally Posted by elisowski
Does anybody have a part number for the 30 lb SVO's?

Would they be a better choice than Accel 36 lb/hr? I can do my own pcm tuning. Would the 30 lb/hr rating confuse the PCM and cause it to run rich? Or would it be better to use the SVO's and enter a 32 lb/hr value?
You must calibrate your ECM/PCM for the injector and build of motor.
The proper injector constant must be entered.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
G-BODYT56
Parts For Sale
6
01-14-2022 11:14 PM
magman
LT1 Based Engine Tech
7
04-15-2016 03:08 AM
autoxr166
General 1967-2002 F-Body Tech
0
09-25-2015 04:21 PM
form94
Parts For Sale
2
09-23-2015 07:30 AM
95blkss
Parts For Sale
2
09-22-2015 03:18 PM



Quick Reply: which injectors, tb, and afpr to use?



All times are GMT -5. The time now is 08:21 PM.