Anyone ever rebuild their own injectors? I'm considering going to a 160cc single shot. I can buy a set for about $1200 or I can do the rebuild myself for around $800. I like the idea of saving some money but don't really know if I'm in for any surprises or other difficulties.

 

The consensus here is new is best and for many it's the only way to go. In my experience nothing rebuilt ever lasts as long as new and ofttimes low use used works better than rebuilt. More important than longevity is how they perform while they are working. But I am interested in how it's done and how you make out if you go ahead and rebuild your own.

 

I've watched a couple online vids and such. If I do it, I'll be replacing the nozzles with new as well as the plunger. The rest of the rebuild would be springs, seals and check *****. Doesn't look that complicated. I have over 200K on the original injectors and am currently having serious cold start issues. I've ruled out about everything else so I'm looking at doing an upgrade instead of a strait replacement. This change would also include some reprogramming from DP and possibly a billet turbo wheel.

 

I have seen too many posts and problems from rebuilt injectors done by "professional" shops that I would not even attempt to rebuild them myself. When I swap out my injectors, I will be going with new AC's in a 160/80 setup.

Although, only you know where your money is best spent. If you do rebuild them yourself, be sure to update us and let us know how it goes.

 

Thanks for the advice. Going to drop the idea of rebuilding them myself due to balancing issues. I don't think I have enough coin to spring for new injectors and a tuner so I may go with FFD remans with a DP tuner. This would at least get me into so single shots. If one goes bad I could replace with a new one down the road. Is my logic sound at this point?

 

Swap the DP for a Hydra...

 

So I've done a great deal of research and now believe there's no such thing as injector balancing. Basically, if injectors require "balancing" you couldn't buy a single new injector to add to your worn set.
I'm back in the "rebuild my own" camp and will do a write up on it if I commence (pass or fail).
My current dilemma: I have AD injectors and would like to make them ACs. From all the info I can gather, I need a new barrel and plunger to make that happen. Also, going with the right plungers will get me to a 160cc injector.
O-Ring kits and other parts are plentiful to include new nozzles which I intend to do also since it only adds a couple hundred to the budget.

Dan, Do you have any reason you'd ditch DP? Have you used their product? I've been off this forum for a couple years but as I recalll, I've heard nothing but praise for their product. Never heard of Hydra....

In all seriousness, I want to do the best I can with a limited budget and tap the wealth of knowledge on this site. So, please check me on my logic. If anyone knows where I'm wrong on this, please chime up.

BTW. I'm not a novice mechanic. I rebuilt the automatic transmission on this truck and have a good bit of machining experience....

Any advice is appreciated.

 

Forgot to mention. I can't find barrels anywhere. I can get nozzles and plungers all day long.... No barrels. Anyone know a good source? I'm considering buying up someones cores but would rather go new in order to eliminate inheriting someone else's problems.

 

I looked into all you are looking into about 3 years ago. You can't get the barrels unless you are a builder/business with an account with one of the hand full of suppliers. You have to be a business collecting sales tax to get said account with said suppliers (minimum sales to you per year must be $5000 to keep the account open). I spoke to sales reps from a couple different companies. It is simply not cost effective to build your own, since there are no suppliers to the PUBLIC out there. So, you have to buy the critical parts from a business/builder after mark-up, and most all of them will not sell you those critical parts anyway (would jeopardize their business platform). All of the current world suppliers of injector parts only deal with businesses (I called them all), because they are purposely not set up to collect sales tax.

Most of us have switched to Gearhead tuning out of Bryan, TX and the Hydra chip. They use Unlimited Diesel for their injectors. I know of NO ONE that is unhappy with their products, work ethic or competency.

 

That is exactly what I feared. This whole project may have to wait till next year now.

 

Why not just do remans from Jim at Roeswood? It's the consensus that he is the guru on redoing these and $1200 for premium rebuilds is a pretty good deal considering.

 

If I hadn't needed tuning as well, I would have went with Rosewood. Very good option. Maybe the best option for re-mans.

 

Rosewood is a great option because you can have your own injectors rebuilt, instead of just swapping for the cores. If I were going with remans I would go with Rosewood and get the same injectors I just took out of the engine freshened up.

I have decided to go with new 160/80 from PIS, but there is quite a big price difference there and takes a bit of thought before committing to it.