So I was looking for some ac injectors on the Internet and come up with qn article about modifying your own.
Must have been some diesel mag or whatnot.
I k ow most of you feel that after rebuild they should be flow tested and matched. But what else is there. I also understand that without flow testing it may be tricky to tune. Even live tuning could be iffy when you don't know flow rates.
What do you guys think about this.

http://www.diy-injectors.com/Diesel%...20Feb%2008.pdf

 

Looks like the best way to upgrade if buying reman injectors is to buy stage 1s.
Reman ac injectors are 200 each from what I've seen. I need to look at our sponcers later today.

Lots of injectors at this place.
Link to ac
Diesel Injector, 1994-96 International T444E

 

These are the ones I have in my truck. I am very happy with them. LINK

 

Riffraff Diesel: Stage 1 Single Shot Injectors

 

Thanks clay, those are the ones I had been looking at for a long time. They are on my wishlist. Do you do layaway, lol.

 

I have the DIY injectors from Jim at Rosewood. I sent him mine and he did them they are very nice and a Half of what a new set would of cost.

 

Injectors are something that MUST be right, or you'll be fighting all kinds of issues. I like Ryan Casserly's stix that I got from Clay (I think he does Bean's too??), and nobody has had complaints about Swamps. Those are the three places I'd feel comfortable getting stix from. There may be others (Hypermax?) that do a fine job, but word of mouth was key when I picked mine out. And those are the three or four that get the biggest accolades across several forums. I've seen quite a few threads about problems with DIY or somewhat unknown injector builds.

 

No problems with mine.

 

Buy new.

Brand new AC's from Clay are cheaper than $200 each.

Stewart

 

I read that same magazine article and tried the rebuild kit a short while back. Upon re-installation the engine ran smooth but low on power. Turned out that I did not index the poppet valves correctly. I corrected that situation and the engine ran great for a while (but still seemed a little low on power). Several weeks later, one of my nozzles cracked or split (or whatever you want to call it) and it was leaking fuel into the cylinder. I pulled all 8 injectors and sent them to Jim at Rosewood where he pressure and flow tested them. Turns out that all the original injectors were flowing at quite low numbers compared to factory specs and replacement nozzles were recommended.

Jim replaced the nozzles, pressure and flow tested and returned them to me within 1 week. I was very surprised how much power my truck had with the reconditioned injectors. Just goes to show that over time, the nozzles loose their ability to flow and power is reduced little by little. The change must be so gradual that it's hard to notice when you drive the truck every day.

So, the lesson learned for me is that injector nozzles do wear out and can sometimes break (which is very bad of course). However, I don't think that cracked nozzles are all that common, but low flowing nozzles must be very common, especially with lots of miles. For the last 180,000 miles I have treated my injectors very well, maybe better than the average PSD owner. I change my oil like clockwork, change my fuel filter every 15k (Motocraft), buy diesel at stations that sell lots of fuel so it's as fresh as possible and use Diesel Kleen, Lucas, Stanadyne quite often. Even so, the nozzles just wear out and should be replaced eventually.

In retrospect, I should have pulled my injectors and sent them to Rosewood (or another reputable builder) around the 190k-200k mark and saved myself some headaches. My plan going forward is to try and get 100k out of my (reconditioned w/new nozzles) injectors and then get a totally brand new set around 350k or so. Rebuild that set after 200k and so one....

I know, wishful thinking that my truck and I will be around that long but it doesn't hurt to dream.

 

I guess it just one of those things, you see trucks like a few of our members here that have well over 200,00-300,000 on stock injectors so really when is the time, upgrade or just go for the longest miles they can achieve, all personal preference of course. I was in the catagory with going for the 300,000 + and I still am, I'm upgrading somewhere down the road and not taking anything away from DIY builders, let Jim (Rosewood) build them, he knows what he's doing along with these other fine builders, nothing more important than an injector..

 

I read nothing but great things from Jim at Rosewood. That's why I went with him and for getting my injectors rebuilt to some nice hybrids at half the cost of new ones it sold the deal to me.

 

Go check out the new issue of Diesel Power. It shows Casserly's flow bench. His sets are build to flow the same amount.

If you have one of these benches lying around to make sure the injectors flow the same then by all means you should build them.

I seriously considered it as a side project. I had some cores lying around but to build a set is pretty pricey. Machining the little bits is something I leave to the professionals.

On a side note. I met Casserly down at Bean's dyno day and he is a super nice guy. I will do business with him whenever I need injectors. He built me a set and had them overnighted all the way to Oregon to save my butt. And that Clay fella and a bunch FTE guys showed a simply guy like me how to put them in. (Thanks everyone at RRW, U guys rocked!!)

As a matter of fact I think Dad's truck is about to drop a stick so I may be buying another set of Casserly Stage 1's.. or give dad mine and get some hybrids haha... bye bye PMRs