Have mostly stock 6.0, 03 4 dr, mostly driver but tow 36 ft., 5th wheel sometimes to Daytona, sturgis, etc. . So far it has as follows: S&B intake/ filter, ficm repair with 40 hp tune, airdog 2 and DC Power alt..190,000 on odo, think injectors are getting tired. I did the bottle of hot shot, and always run rotella t synthetic 5/40 with motorcraft filter, helped but . . . Looking into new injectors before I need them! Just did most of the mods since bad ficm ( 24 v.) caused no start. Runs awesome now but still I want to educate myself before a problem causes panic! Want to hear from you if stock or 155 injectors would be better for reliability, performance . . Planning on studs and exhaust soon, and sct programmer. . It's fun showing " performance cars" what my tail lights look like! Looking forward to education! . . Friends . . I have a confession. . . I'm addicted to diesel!

 

I just did injectors on my truck about a month ago and was in the same position as you. Had to decide if i wanted to get them upgraded or not. I decided to get 155/30 injectors from River City Diesel. I also had them write tunes for the injectors and mods in my sig and am very happy. Now I also had them detune the injectors a little since i do NOT want any smoke and with the regular tunes and no bigger turbo they would have had a little smoke. (not trying to scare you) I just dont want smoke yet. Now after i get the bigger turbo and take care of my ongoing fuel pressure problem ill be fine with little smoke. To me it will be justified since the truck wont be very stock anymore and ill be trying to finally get out of it whats in it. But since you are going to have studs its up to you. Im going to try and keep 500 without studs and see what happens. Good luck

 

Well you're going to need the SCT BEFORE you put the injectors in, or you're going to put a hurting on your trans.

How heavy is that 5th wheel?

To break it down...

Performance: 155's are better, obviously
Reliability: Depends on what route you go. If you're building your 155's from new stockers (as you should) it should be just as reliable as stock, as far as injectors go, however more power usually means it's easier to break things, though 155's aren't really getting into damaging territory, it just goes hand in hand
Cost: 155's will cost more, obviously again, and you will probably need a few other supporting mods, at LEAST a fuel pressure gauge.

What most people don't understand is that there are NO aftermarket 6.0 injectors. All of those "big" sticks... they're built from stock 6.0 injectors. The quality builders are going to ask that you send in 8 NEW OEM Ford injectors, for them to build the big sticks out of. If you don't do this, IMO, you're taking a risk. How big of a risk? Depends on the injectors they use for building and who's building. The correct way to do this is buy 8 new and have them built from those. It sucks, and it costs a ton of money, but it's the only sure fire way to get it right the first time.

 

Had mine built from my old ones by RCD. I dont see a problem with having the injectors coming out of your truck rebuild.

 

Because if some of them have stiction prior to being built, you get them built, put them in and something isn't right, where does the blame fall? You're going to blame the builder won't you? RCD was drug through the mud a couple years ago because they were building injectors from old stockers laying around, and someone was having some major issues with them. He sent them back, tried another set etc... ended up putting stockers in and it ran fine... he posted youtube vids up and whatever else damning RCD for their "mess up." If you notice now on RCD's website, they offer injectors both ways, building from old and building from new...

 

I dont see the problem with running stock used rebuilds and yes 4 out of 8 of mine had a GOOD bit of stictition. Sent them to RCD and they rebuilt all 8 and bored them out to 155 and put 30% injectors on them. Also Jessy Warren will rebuild used stock injectors too so whats your point? 1 guy had a bad experience with them? And um just to let the OP know you can not get brand new injectors for a 6.0L no way no how. Everything you get is a rebuilt injector. I dont see why their is a problem with just sending them in.

 

There's a big difference in sending the 8 injectors out of YOUR truck, than there is by buying 8 "used" injectors from one of the builders.

Most of the big name builders will NOT even build them that way. They will only build them if you send 8 brand new OEM injectors in (yes, rebuilds from Ford, but they actually replace the spool valves etc).

It's not just 1 guy, I'm just telling you from experience from everyone who has been around 6.0's since they've been out.

Jesse Warren gets more injector returns than you can even shake a stick at. My buddy went with his injectors, I think he was under his valve covers 4 times swapping them out and sending some back in. With that said, Jesse Warren has been great with customer service, but it still sucks diving in that many times...

It's not just 1 guy that had a bad experience... there is a reason RCD offers new now... they never used to. I think it's nice that they offer it both ways too, but if you ask anyone who has played with injectors in a 6.0 quite a bit, they all say the same thing, go with new. Myself... I'm with you, I'm a racer on a budget, I'd probably send mine in just like this and run some rev-x haha.

I think Lubeowner (from other forums) offers a service to recondition your spool valves etc... Services | PowerStroke Doctor

 

I dunno my spool valves got rebuilt by RCD and when i was talking to Jessy he rebuilds the spool valves also. Trust me my truck had really bad spool valves when RCD got them. truck was missing on 4 of 8 when we pulled them. Im not trying to say RCD is a great company or anything like that it just happened to be who the guy i brought the truck to sent them. Truck runs GREAT now though so im happy. And yes holy crap expensive.

 

Performance "rebuilt" injectors are a double edged sword. The buyer wants a quality product, the builder needs a quality baseline "core". Ask me it's on the builder. IF the core is bad and he mods the injector he is responsible for the result regardless of the condition it came into his shop.

Reality should be the injector builder mods your injectors and sends your injectors back.
That would be realistic. But we know you got to start somewhere. Builders buy cores in bulk, mod them for quick turn-around to make sales. THAT is where it's on the builder and their own quality assurance process. Otherwise you got to keep the customer happy.

Casserly stepped away from cores due to the condition of cores he was receiving. I for one applaud that step but it's now a STEEP climb for Cass injectors. You got to pay to play.

 

Well said. Casserly is the one I was thinking of. I'm pretty sure Hypermax is the same way.