Thinking about throwing my old injectors back in my truck. The 75s are plenty laggy and I don’t foresee any tuning in the near future to alleviate the problem. My old stock injectors have 128k on them. Any idea on how long they will last? I’ll clean them thoroughly before reinstalling. 

There is no way to say.  It ultimately comes down to the specific properties of the batch of metal used for the springs and the nozzles, and there is always a tolerance allowance.  All you can do is use clean fuel and 2 stroke.  

I pulled mine out at 250k and dont think there was anything wrong with them. They probably lost some efficiency over the years but the mileage remained the same. But like @trreed says there is no way to say unless you want to spend the money and time to have them tested. I would say put them in and see what happens as long as there were no problems to begin with. My stockers were laggy too. Had to roll into the throttle  to make them better. Kind of the same thing I have with the 50's I have now. 

37 minutes ago, Marcus2000monster said:

My old stock injectors have 128k on them. Any idea on how long they will last?

 

They are done. 100k you're basically already lost most of your pop pressure. Like my stocker injectors are 150k miles and down to 240 bar when DAP tested them. They are basically junk now or good core bodies. My current injectors are closing in on 100k miles now and I'm planning on having my old stock bodies set up with 7 x 0.0085 at 315bar again. Then hang on my use injectors as spares. 

So best bet is to get mine repopped or get new stock hp sticks?

With the cost of replacing injectors stock for stock, you might as well keep your eye out for a used tuner to use with your current ones. 

11 hours ago, trreed said:

With the cost of replacing injectors stock for stock, you might as well keep your eye out for a used tuner to use with your current ones. 

Bingo...

12 minutes ago, Mopar1973Man said:

Bingo...

Replacing the injectors won’t cost 700$ and a qaudzilla will. Plus I can have my oem sticks rebuilt for 150 or 250 with new nozzles.

Quadzilla is $674

 

Reman'ed RV275's $379

 

Only $295 more for the Quadzilla.

 

Heck even my +75 (7 x 0.0085) Injectors are $349

 

 

11 hours ago, trreed said:

keep your eye out for a used tuner

 

Deal is is that I'm really looking for a mainly stock truck without lag. That's the reason for wanting my stock injectors back. If I do anything for tuning it will likely be an XZT 

10 minutes ago, Marcus2000monster said:

If I do anything for tuning it will likely be an XZT

 

Only good for stock injectors. 

 

This why I still suggest the Quadzilla Adrenaline over the XZT because then you not bound to small or stock injectors and then deal with the lag issues. Basically, build a tune for performance and a daily tune with a mellow fuel curve for smoke control. Basically in a nutshell XZT is just an Edge EZ. Again design its tuning around stock injectors. No timing control, no fuel control no fuel to boost control. 

 

You could buy a Quadzilla XZT and a set of RV275 injectors.

Edited September 23, 20186 yr by Mopar1973Man

The plan is to run stock injectors. I'm not interested in tuning my truck at this point.

Dont think stock injectors are not laggy. My truck new was laggy all stock. Your gearing will help though. The Banks tuner and RV's was the best I have had mine. Not as much power as the Comp but clean burning, the lag was bettter, and temps were better controlled.

 The RV's were good by themselves after the tuner fried. Much better that the stock ones. I cant imagine going back to stock.