IDK about "fail" yet but one of mine (summer '09 warranty) is getting noisy, has a balance rate of 3.7 in idle. Most of the others are around 2. They were all at or under 1 when new.
LB7: New Injector Design
- Thread starter Relentlesscummins
- Start date
IDK about "fail" yet but one of mine (summer '09 warranty) is getting noisy, has a balance rate of 3.7 in idle. Most of the others are around 2. They were all at or under 1 when new.
When we talked last week they were still stuck in customs
Won't be a cat # they just used a similar desin off a cat style injector.
As far as tuning for stock applications I am not sure what gn will do. We are putting them on a mild built truck that alreadys has custom efilive tuning so be will just be having some new tunes toSsed in it.
FYI if they were done by GM in summer of '09 I wouldn't bet too much on them being the 2007+ design from Bosch. When you got the work done GM could have used a set that had been in stock since prior to 2007, at a dealership or at a GM warehouse. We would have to run the serial number to verify that this is the case but it is more than possible. Also want to note that running bad fuel through any common rail injector can tear one up quick.
Yea, we dont want to hear about good stuff coming... Get over yourself
Brian loves changing out injectors...
I have the latest in my truck but have only had them for about 16 months with around 23k on them. The first ones lasted a good 4 years so we will see about these. There have been like 8 different Bosch revisions which really sucks for the guys who got warranty work done only to have crap injectors put back in
All this bad injector talk is making me scared
Drive fast, take chances, fix 'em when they break! :roflmao:
Seeing as cat has a had a hard on for HEUI ever since diesels starting being computer controlled, what the hell would they be doing messing around with an on-road common-rail injector?
I call BS too. Sorry. Especially for the increased fuel mileage claim. Any idiot with bigger injectors and EFILive knows that if you dont retune specifically to suit the bigger injectors, your fuel economy goes down from stock [injectors].
I call BS too. Sorry. Especially for the increased fuel mileage claim. Any idiot with bigger injectors and EFILive knows that if you dont retune specifically to suit the bigger injectors, your fuel economy goes down from stock [injectors].
well there have been upgraded (bigger) tips available for the LBZ's ever since they came out back in late 2005....
Extrude Hone, Exergy, etc... they all make "bigger LBZ injectors" anywhere from 10% over stock to 150+% over stock.
Seeing as cat has a had a hard on for HEUI ever since diesels starting being computer controlled, what the hell would they be doing messing around with an on-road common-rail injector?
I call BS too. Sorry. Especially for the increased fuel mileage claim. Any idiot with bigger injectors and EFILive knows that if you dont retune specifically to suit the bigger injectors, your fuel economy goes down from stock [injectors].
Cat had common rail systems on the 07+ c7/c9.
Its a bosch product not a cat product, they are using a similar cat designed injector.Seeing as cat has a had a hard on for HEUI ever since diesels starting being computer controlled, what the hell would they be doing messing around with an on-road common-rail injector?
I call BS too. Sorry. Especially for the increased fuel mileage claim. Any idiot with bigger injectors and EFILive knows that if you dont retune specifically to suit the bigger injectors, your fuel economy goes down from stock [injectors].
Hmmm i could have swore that was for either the exhaust bearings, blinker fluid, or flux capacitor
You should know what that is...
Camshaft for my C27 im building. My engine had a custom 2 piece cam.
But keep a close eye and fix them as soon as they break - I've seen too many melted pistons on bone stock LB7s. Come in for an injector job and we inspect with the boroscope and find a piston melted. Calling to tell one customer that is how I ended up with a Kodiak - rod was bent to hell, piston was melted down the side and block had a deep gouge in the cylinder wall. Can easily turn an already crappy and expensive fix into an extremely expensive fix that'll have your truck down for weeks.
Same here. I have a set of latest revision BOSCH LB7 sticks in my BURB with 24K on them. I am now getting some injector rattle, extended cranking time when hot, low rail pressure with a 1950 pulsewidth, and have a balance rate on #1 of -4.7 at idle in gear(1.2 in neutral). They may be better, but I aint happy with mine so far. I need to pull the covers and check my return rates to see how many need to be done.
Seeing as cat has a had a hard on for HEUI ever since diesels starting being computer controlled, what the hell would they be doing messing around with an on-road common-rail injector?
I call BS too. Sorry. Especially for the increased fuel mileage claim. Any idiot with bigger injectors and EFILive knows that if you dont retune specifically to suit the bigger injectors, your fuel economy goes down from stock [injectors].
x2!!! Im at one of the biggest bosch suppliers in the country quite often, sometimes every night, and nothing was heard of this...
Also im pretty sure bosch would never have to stoop so low as to copy something off a cat product, if anything it would be vice verca. Hell cat had to quit selling over the road motors for a couple years just to work on making them pass emissions...Id be willing to say cat doesnt even design their own injector... they just stamp their name on it like most things.
Im not asking for proof, im calling bs period, either someone is just blowing smoke up his a$$ or someone seriously got $crewed. A new revision i could see, that happens quite often, but the totally new design, cat, 40% over blah blah blah.... that brings me back to the times when cat/john deere was designing a motor for gm in the late 90s:rofl::rofl::rofl: