I breifly searched on this but couldnt find anything. I'm looking into some more fueling and cant decide on injectors or just the nozzles. I'm looking at some around the 120 to 150 hp. What are pros and cons between the two.

 

Full injectors are a better way to go. I was in your shoes about 4 months ago and found out that even though nozzles are cheaper you almost spend the same amount gettin them reballanced by an injector shop to make sure they spray even. I called Lenny at DDP and got a set from him. He make all of his injectors in-house.

 

If you're going for that size injector, I'd say get a full injector from a good shop. F1, DDP, I hear a lot of guys like the new II sticks. I've got DDP's in my 24v that I really like, and I have a set of F1's for my 12v waiting to go in. I'm expecting about the same quality as my DDPs.

 

Ive got a friend that gets industrial injection injectors. Does anyone know anything about these?

 

Talk to J Lent. He seems quite pleased with his.

 

See I used to be the same way and thought tips werent worth a nickle and wouldnt get them, but when i actually found out by looking at them, i dont understand why they wouldnt be as good as an injector. cuz arent you just pulling your old tips off and replacing with on with bigger holes and sometimes more holes? Isnt that pretty much the same thing that has been done to bigger injectors? I dont know if thats clear or not, but I dont see why they wouldnt be as good as an injector. I've heard to not go with tips over about 150 hp tips, but anything under that would be ok.

 

It's because you don't know if you'll end up with a balanced set if you simply slap in the nozzles. Sure, you could take the gamble and slap them in, but I've seen trucks here locally where an injector is not opening at the same pressure as the rest. Or, you could take the nozzles and your old bodies to a pump shop to have assembled and setup, but then you'd be in it almost as much as just buying the full injectors.

At least with the full injectors you know they are a balanced set, and usually a better warranty.

Don't forget, your 98.5 is going to need the connector tubes for an injector job.

 

Explain to me about the connector tubes. are you talking about the long skinny tubes going from the lines down to the injector? If so, why would i need them.

Ive got a friend that does all sorts of little things like this to his 99 and he had his drilled out a little bit. (not sure of the size) is that what your talking about? Those tubes made his truck run really rough, almost like it had a different cam in it.

So with just the tips, they arent really a 'matched set'? What would it do it they werent exactly the same pressures?

Thanks for all the input so far. I'm using this as more opinions and hopefully better responses than just the guys i know. I havent ruled out the option of injectors yet. I'm trying to learn more about little stuff like this.

 

Thing with installing tips, they need to be pop tested.

On earlier model engines, the connector tubes can be deformed.

http://dodgeram.info/tsb/1998/14-01-98a.htm

 

Yes those are the tubes, the original 98.5 tubes were made of a slightly different material, and are not really reusable because they don't seal back up very well and either run rough, or leak. This is not news, it's been known by Cummins and every injector builder since 1999, and required on engines before serial# 56462592.

Your friend pretty much screwed up the way the pressure is maintained in the injection lines. Enlarging the tubes is like retarding the timing, that's why it's rough.

 

So all 98.5 needs those tubes, how much are they from cummins.

 

hmm, glad to know that. Does anyone know off the top of their heads how much im looking at with the new tubes?

 

There is nothing wrong with tips. Reason why I suggested going full injectors is you get actually better tips. The only manufacturer of tips that I know of is Edge, with the Jammers. They aren't known for full advertised power, or cleanliness. DDP's and F1's are known for those things, but are only sold as full injectors AFAIK. I had Jammers, now I have DDP's. Night and day difference in just the way it runs.

 

I don't have the numbers handy but look up the later part number for the tube and anytime pulling one replace it if it is not the late part number. If you play with these things you end up with a bag of them in the shop. Just don't reuse the old part number once pulled out.

 

so my number goes 5647xxxx(I can not remember the other numbers). I assume I'm good then and have the updated tubes.