Injectors or nozzles
- Thread starter duramaxzaya
- Start date
Nozzle's are what gets modified when you buy larger injectors, unless you're buying huge injectors that have internal work. If you buy 40 over injectors they just have modified nozzles.
Kinda a trick question...
If per say you have a brand new set of injectors, and send that set to a place like say, Exergy, they might still test the set first and then remove the nozzle from the injector body and modify the nozzles and put them back on and retest for spec.
If you have a good set of injectors in your rig and want to upgrade, you can get a set of stock, new nozzles, send the nozzles and set of injectors to Exergy, they will test the bodies of your old injectors and probably replace some o-rings, then mod the nozzle etc etc....
If your injectors are on the down hill side of good, they will need a complete rebuild, which is not so cost effective, so at that point your back to getting a new set.
You can get a set of nozzles separately and mod them, some shops will do it, but Harvey @ Exergy keeps telling me that Exergy does not, they like to make sure the nozzle and bodies together push a specific amount of fuel, not just the nozzle.
I'm not so sure what's the best route to take, I have been putting a set together for almost a year buying the injectors one by one no core from the stealership. When I have a complete set together I will send it out to Exergy to have them modded and flow matched.
You can buy a set of nozzles alone from DDP, and slap them on your current injector bodies and hope for the best, lots of guys have don that without issue.
For 600whp out of an LBZ you can stretch the stock injector out to make it happen, not on a stock turbo though. You can run 525-550 though with just a built trans and a good efi live tune(max effort built trans) 40% over injectors will support much more than 600whp and set up properly will work very well for 600whp DD, I'm not sure you really need them for it though.
What are your overall/end goals for the truck? If you plan to run a bigger turbo or compounds and make over 600whp 40% injectors will be fine, but anymore tuners are soo good that alot of guys just go straight to 100% over injectors, most guys want the room to go bigger anyways and only want to spend the coin on injectors once, so be wise in your choices and build path, take it slow.
IMHO
A great set up for 650-680whp for a stock engine LBZ would be:
10mm stroker cp3
60% exergy injectors(can use 40% minimum and up to 100%)
Danville vgt72 or stg2 billet vgt68
Of course you will need all the supporting mods too
Lift pump
Exhaust
Downpipe
Gauges
Tuning
Built trans
Ported drivers side fuel rail fitting
Intake
Unnecessary mods
Hi flow cp3 kit
Intercooler
Transfer case pump rub eliminator(actually really necessary, just not to make power)
Traction bars
Egr delete
Pcv reroute
Lock up box
Upgraded Transmission cooler
ARP Headstuds
I could keep going, but you get the gist of it
Kinda a trick question...
If per say you have a brand new set of injectors, and send that set to a place like say, Exergy, they might still test the set first and then remove the nozzle from the injector body and modify the nozzles and put them back on and retest for spec.
If you have a good set of injectors in your rig and want to upgrade, you can get a set of stock, new nozzles, send the nozzles and set of injectors to Exergy, they will test the bodies of your old injectors and probably replace some o-rings, then mod the nozzle etc etc....
If your injectors are on the down hill side of good, they will need a complete rebuild, which is not so cost effective, so at that point your back to getting a new set.
You can get a set of nozzles separately and mod them, some shops will do it, but Harvey @ Exergy keeps telling me that Exergy does not, they like to make sure the nozzle and bodies together push a specific amount of fuel, not just the nozzle.
I'm not so sure what's the best route to take, I have been putting a set together for almost a year buying the injectors one by one no core from the stealership. When I have a complete set together I will send it out to Exergy to have them modded and flow matched.
You can buy a set of nozzles alone from DDP, and slap them on your current injector bodies and hope for the best, lots of guys have don that without issue.
For 600whp out of an LBZ you can stretch the stock injector out to make it happen, not on a stock turbo though. You can run 525-550 though with just a built trans and a good efi live tune(max effort built trans) 40% over injectors will support much more than 600whp and set up properly will work very well for 600whp DD, I'm not sure you really need them for it though.
What are your overall/end goals for the truck? If you plan to run a bigger turbo or compounds and make over 600whp 40% injectors will be fine, but anymore tuners are soo good that alot of guys just go straight to 100% over injectors, most guys want the room to go bigger anyways and only want to spend the coin on injectors once, so be wise in your choices and build path, take it slow.
IMHO
A great set up for 650-680whp for a stock engine LBZ would be:
10mm stroker cp3
60% exergy injectors(can use 40% minimum and up to 100%)
Danville vgt72 or stg2 billet vgt68
Of course you will need all the supporting mods too
Lift pump
Exhaust
Downpipe
Gauges
Tuning
Built trans
Ported drivers side fuel rail fitting
Intake
Unnecessary mods
Hi flow cp3 kit
Intercooler
Transfer case pump rub eliminator(actually really necessary, just not to make power)
Traction bars
Egr delete
Pcv reroute
Lock up box
Upgraded Transmission cooler
ARP Headstuds
I could keep going, but you get the gist of it
Well I have egr delete, exhaust, downpipe, lift pump, intake, pcv reroute, and gauges, my level 5 tuning is 250+ Hp i thought it would just be nice to have 40% nozzles with 600hp
You'll definitely need a turbo to do it. Injectors won't hurt and probably will help keep your pistons intact longer, but they're not a absolute necessity.
Lol, yeah I get it.
Get your tune in and drive it, drive the piss outta it and figure out how much more you want, then worry about injectors and how you are going to attain the power you so desire:thumb:
you do have a built transmission....right?
Gotta have a built trans to run a 250+whp tune(built trans tune), I wouldn't even consider running the level 3 tune on a stock transmission. You can get away with it on the 6sp if you have a transgo jr shift kit, but level 4 will tear the tranny up pretty quick even with a transgo, I know from experience
Get your tune in and drive it, drive the piss outta it and figure out how much more you want, then worry about injectors and how you are going to attain the power you so desire:thumb:
you do have a built transmission....right?
Gotta have a built trans to run a 250+whp tune(built trans tune), I wouldn't even consider running the level 3 tune on a stock transmission. You can get away with it on the 6sp if you have a transgo jr shift kit, but level 4 will tear the tranny up pretty quick even with a transgo, I know from experience
Lol, yeah I get it.
Get your tune in and drive it, drive the piss outta it and figure out how much more you want, then worry about injectors and how you are going to attain the power you so desire:thumb:
you do have a built transmission....right?
Gotta have a built trans to run a 250+whp tune(built trans tune), I wouldn't even consider running the level 3 tune on a stock transmission. You can get away with it on the 6sp if you have a transgo jr shift kit, but level 4 will tear the tranny up pretty quick even with a transgo, I know from experience
yes i do, yeah no way my level 3 is 150 i wouldn't even put it in without a built tranny
Have you heard of SDP (screaming diesel performance) Scott is the owner and is a pretty cool cat, he moved out to forks, used to be in P.A or sequim, out in your neck of the woods anyways, he can help you out alot with stuff like tranny builds and turbo and injector upgrades, and he uses rob/ATP for tuning last I heard, I believe he also tunes but has deferred to Rob's tuning.
He's worth the call fer sure...
He's worth the call fer sure...
Yeah I've been goin to him lately about my truck he's about 30 minutes away he's helping me a lot with it