GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

8.1 injector questions

Thread Tools
 
Search this Thread
 
Old Feb 8, 2004 | 12:37 PM
  #21  
L-EATER's Avatar
11 Second Truck Club
iTrader: (2)
 
Joined: Jan 2002
Posts: 1,412
Likes: 1
From: Missouri
Default

Big guy-thats cool I guess I just sensed a bit of whining and I am in a weird mood today. I wasn't accusing you of damaging the programmer, but after you had the probs with it I would never sell it again and I don't want to have to get reflashed like you did so it is junk now unless I wanted to send it in. Not blaming you for that, though. Sounds like I chimed in here on this without knowing all the details and I'm sorry for that.
Reply
Old Feb 8, 2004 | 12:53 PM
  #22  
bigguy75inches's Avatar
Thread Starter
TECH Resident
 
Joined: Apr 2003
Posts: 788
Likes: 0
From: Lone Star, Tx
Default

They do you know what brand our stock injecors are? i thought they were delphi... but the part numbers i have dont look nothing like teh delphi partnumbers.
Reply
Old Feb 8, 2004 | 01:00 PM
  #23  
bigguy75inches's Avatar
Thread Starter
TECH Resident
 
Joined: Apr 2003
Posts: 788
Likes: 0
From: Lone Star, Tx
Default

here is a picture of a stock 8.1 (top) and the mysterious injector (bottom) If you dowload the picture and zoom in you can see the part numbers. or at least the big one.

Reply
Old Feb 8, 2004 | 02:41 PM
  #24  
BigTex's Avatar
? ? ? ? ? ?
iTrader: (16)
 
Joined: Nov 2001
Posts: 7,126
Likes: 2
From: East of Dallas
Default

I've had plain 8.1 and marine 8.1 injectors, and neither looked like the top injector. However, they did have the same color O-ring as the top one. The O-ring on the bottom injector looks like my take out 99 injector.
Reply
Old Feb 8, 2004 | 03:36 PM
  #25  
twobit's Avatar
TECH Enthusiast
iTrader: (12)
 
Joined: Jun 2002
Posts: 530
Likes: 0
From: Allen, Texas
Default

Originally Posted by BigTex
It really sounds like Will needs to be called in on this. Fortunately foy you twobit, will lives in Dallas. William Nelson. I can probably dig up contact ifo for him. Parish8 and XLR8 both have spoken with will before. I doubt that he will give ranwalk his money back, but it would be good to know where he got them etc...

*** willn333@yahoo.com
Thanks Richard. I emailed him yesterday but have not heard from him as of yet.
Thanks to Drew for making this right.
Reply
Old Feb 9, 2004 | 10:11 PM
  #26  
bigguy75inches's Avatar
Thread Starter
TECH Resident
 
Joined: Apr 2003
Posts: 788
Likes: 0
From: Lone Star, Tx
Default

i did a part number and found out the top injector is indeed a 8.1 injector,, and its a ac-delco injector, the second number however does not compute lol
Reply
Old Feb 9, 2004 | 11:27 PM
  #27  
red53gmc's Avatar
TECH Resident
 
Joined: Dec 2001
Posts: 918
Likes: 0
From: Baton Rouge, LA
Default

Originally Posted by bigguy75inches
some one told me that the stock 8.1 injectors have 2 holes,, my rc 42#hr have 3 holes, and the mysterious injectors i got now have 4 holes in the bottom, i wonder if they are even higher flowrating than the rc's?

According to Alldata, the oem part number is 17124531. Also, if this description is accurate, I read it to say there are 4 holes.

This is from Alldata:

"The Multec 2 fuel injector assembly is a solenoid operated device, controlled by the PCM, that meters pressurized fuel to a single engine cylinder. The PCM energizes the high-impedance (12.2 ohms ) injector solenoid (1) to open a normally closed ball valve (2). This allows fuel to flow into the top of the injector, past the ball valve, and through a director plate (3) at the injector outlet. The director plate has four machined holes that control the fuel flow, generating a spray of finely atomized fuel at the injector tip. Fuel from the injector tip is directed at the intake valve, causing it to become further atomized and vaporized before entering the combustion chamber. An injector stuck partly open can cause a loss of pressure after engine shutdown. Consequently, long cranking times would be noticed on some engines."

So I would figure ALL Delphi Multec 2 injectors are of the same description. Get them flow tested if you can.
Attached Thumbnails 8.1 injector questions-91221442.gif  
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Oobray
8-Lug Truck Performance
70
Jun 13, 2022 03:38 AM
5.3lSilverado
GM Engine & Exhaust Performance
25
Aug 29, 2016 12:48 AM
USMCvet0311
INTERNAL ENGINE MODIFICATIONS
12
Aug 1, 2015 07:45 AM
bbowerman
GM Engine & Exhaust Performance
10
Jul 26, 2015 10:57 PM
Ammadien
New Members
1
Jul 22, 2015 08:50 PM




All times are GMT -5. The time now is 08:02 PM.