BB Code VS G code Injectors

Golden Helmet

Full Access Member
Joined
Apr 13, 2015
Posts
498
Reaction score
323
Location
Monterey County, California
The last set I ordered, when I opened the Delphi box, there was a stanadyne box inside it with a D code stanadyne injector.....whole set that way.
I ordered a set of "new" injectors off Ebay and I got 8 Stanadyne boxes with black D code injectors inside. I've never heard of D-code injectors before, but I'm gonna have them tested and adjusted (if needed) before I put them in. I didn't have my R&D injectors independently tested before they went in, but it's been a shakey SOB ever since installation when it used to be smooth.

Now I'm wondering if they were actually "new" or not, seeing as they're black and D-code, but they were in the Stanadyne boxes. I had to replace one R&D injector with a "new" one from NAPA and it was very obvious that it wasn't new at all, it was in a generic box and someone had taken a grinder to it to remove the code letter.
 

typ4

Supporting Member
Supporting Member
Joined
Dec 24, 2005
Posts
9,093
Reaction score
1,372
Location
Newberg,OR
FYI, I have one set of new bb code left . And a couple spares for warranty.
So when I rebuild it is with new tips when available. Which is the only wear part. So they are as good as new weather some believe it or not.
To the original poster , You will like the BB code if you bought mine, if I sell you a set of rebuilds , you will love those.
Stanadynes are costing me more than what I see them on ebay for, so when it isnt fun for me, I will not do them.
 

79jasper

Chickenhawk
Joined
Oct 13, 2012
Posts
17,367
Reaction score
1,930
Location
Collinsville, Oklahoma
So everyone that's selling them as new, is lying?
Funny how the diesel shop that tests and balances them for me, knows they're new also.
Guess everyone must be lying to me. Lol
Don't know what your game is but I'm not your average everyday *******
Typically, yes. Visit the hall of shame.
Maybe you're confusing the definition of "new" with "rebuilt."
Oh well. Who cares.

Sent from my SM-G892A using Tapatalk
 

Lug Nut

Registered User
Joined
Aug 7, 2016
Posts
39
Reaction score
4
Location
New Mexico
Do the G code injectors pop test at a different pressure then the BB code injectors ? If so, how much difference between the two ? Is the spray pattern different as well ?
 

Macrobb

Full Access Member
Joined
Jun 12, 2016
Posts
2,380
Reaction score
1,234
Location
North Idaho
If you put new nozzles in the injector, they are very good, as good as new. The problem is that new nozzles can be hard to come by.
R&D secured a supply of nozzles, and they just plain work. This includes the 'modified' Stage 1's.
I do my own pressure matching and testing; without new nozzles, you won't have a 'consistant' injector for long. With new nozzles, well, they should last a good hundred k or so.
The real problem with cheap rebuilds is that you might test them right out of the box and they will be fine. 5K down the road, they will be all over the map.

My first set of Stage 1's... I tested them after a year or so, and the pressures were all within 50 psi. Perfectly consistant. (Book has a range of 150 psi for new injectors)

Do the G code injectors pop test at a different pressure then the BB code injectors ? If so, how much difference between the two ? Is the spray pattern different as well ?
Pop pressure is the same. 1800 nominal.
Spray pattern may be different but it doesn't matter. Even Stage 1's, with 'pintle-less' nozzles and no spray pattern to speak of... still run good, at least on a turbo motor where you have extra air.
With the engine warm, the precup does your atomization for you.
 

icanfixall

Official GMM hand model
Joined
Apr 10, 2005
Posts
25,858
Reaction score
672
Location
West coast
BB codes pop at 1850 lbs.... G codes pop at 2100 or 2200 lbs... They have different springs and different nozzle with pintels also different.
 

bbjordan

Snow Monkey
Joined
Feb 24, 2011
Posts
1,421
Reaction score
393
Location
Ashern Manitoba
With a name like that I hope you run BB's for your injectors lol

Also cant see the link you posted, says access denied

I run both BBs & Gs...not in the same engine tho. :)

I had to set the permisisons. Try the link now. It's slow. The server is my brother's which has a slow wireless link in the middle of nowhere.
 

plywood

Recovered N/A
Joined
Mar 14, 2010
Posts
952
Reaction score
8
Location
Portland Oregon
When I read on it a bunch some years ago I decided it was more about Turbo or non turbo.
Whether I'm popping a VW or Mercedes or these trucks I figure 1900 for a non turbo and 2100 for a turbo engine. As I understand it the G code isn't really a turbo injector anyway but more so an emissions injector so I'm calling my BBs turbo injectors and setting them at 2100. We'll see once the weather gives.
 

Golden Helmet

Full Access Member
Joined
Apr 13, 2015
Posts
498
Reaction score
323
Location
Monterey County, California
Anyone know anything about the D code injectors? I'm really curious what I'm sitting on now. All I know about them is they're black, supposedly new, and came in Stanadyne boxes.
 

icanfixall

Official GMM hand model
Joined
Apr 10, 2005
Posts
25,858
Reaction score
672
Location
West coast
My G code injectors when I pop tested them from new in the box were either 2100 or 2200 lbs pop pressure. This is why I posted what I posted about the pressures. Nobody touched my two sets of G codes before me. I verified these pressures on my Rotunda injector tester.
 

Macrobb

Full Access Member
Joined
Jun 12, 2016
Posts
2,380
Reaction score
1,234
Location
North Idaho
Remember, higher pressures = better atomization, but less fueling and more strain on the IP.
Per Justin, you run into fuel flow issues with higher pop pressures.

Personally, I set a set to 2100, didn't really notice a difference until a hot summer day where the truck wouldn't start(hot). Re-popped them back to 1800 and never had that issue again.
Now, 1800 seems a good number to stick with. They usually wear down a bit within the first few thousand miles anyway.
 

Trevtron

Supporting Member
Supporting Member
Joined
Aug 18, 2016
Posts
269
Reaction score
148
Location
Katy, Texas
No need to be an ass about it.

To the op, there are still nos B.B. code injectors out there but they are getting very rare. I found a source that had a stockpile of them two years ago but I sold or used what I had within a year. There are no more “new” injectors other than what is left over from the original manufacturing. Everything else is remanufactured with new internals, and this is most likely what the eBay sellers “new” injectors are. You can buy at your own risk with these guys, but if it works for you run it.
Exactly, trust me...Ebay isn’t a source you want to rely on for reliable and properly constructed injectors. It’s an expensive mistake and a waste of
1 1/2 hours to install and just plain frustrating, they won’t perform well.

My first hand experience had been that all the Ebay/Amazon “new” Delphi injectors have been rebuilt Stanadyne D codes.

In my opinion, It’s not wise to go cheap on our injection systems...there is no two ways about it.
 
Last edited:

Forum statistics

Threads
91,217
Posts
1,128,519
Members
24,045
Latest member
Ramtough01

Members online

Top