More Decapped Injector Flow Testing Experiments

This week I'm continuing my experiments with flow testing junkyard LS truck fuel injectors before and after decapping. I learned a few things along the way, such as not all LS based truck injectors are interchangeable, and these injectors don't seem to like being held wide open for 30 seconds at a time.
I also show how to replace the filters inside the injectors. I was hoping to have a full set of 8 decapped injectors ready to install, but didn't quite make it this week.

[@edw7586]

Nice video Randy thanks for the info

[@silentbravo]

Your results are pretty in line with what Matt (sloppy mechanics) had determined with stock vs decapped. Stockers around 24-25lbs, once decapped were putting out more like 75-80lbs, so 3x more, just like your tests are concluding.

[@LowbuckLS]

Good to know what I’m seeing is similar, gives me even more confidence in my results. Oh and welcome back to the comments lol. How’s your project going?

[@rustbucketgarage]

Nice same injectors I have.

[@mikebertrand7212]

Looks like Barton meters in the back of you. But very good stuff on injectors. I be looking into this for my build.

[@mikebertrand7212]

Ok, after watching other videos, I see they are recording meters. I used them when offshore in the gulf before. Now everything here are ultrasonic.

[@LowbuckLS]

Yep you’re right on the meters, my employer let’s me use space in one of their shops to work on my truck. Thanks for watching and commenting.

[@fundamentallybroken4194]

Hey Randy, I guess the duty cycle thing was correct?

[@LowbuckLS]

Christopher Michalski Yes! It was your comment on the last video that got me thinking about trying to pulse them instead of holding them wide open with 12V. Thanks for your input.

[@fundamentallybroken4194]

That's awesome! Always a learning process! I'm slowly working on gathering parts for my own LS turbo setup. I'm 80% of the way there. I'm also in Canada - Hamilton Ontario.

[@LowbuckLS]

Cool, always nice to hear from other Canadians on here, what vehicle will your LS turbo engine be in?

[@fundamentallybroken4194]

@@LowbuckLS I have a 2007 Tahoe PPV 5.3L that I will try boosting first, and I also have a 2004 Mazda RX-8 that I'm swapping a 5.3L LS from a 2002 Tahoe along with the AR5 5-speed from a Chevy Colorado. I will most likely boost that once I get it up and running. Lots of wrench turning ahead of me!

[@LowbuckLS]

Sweet that’s kind of my strategy too, learn to boost these engines in the vehicle they came in before attempting to swap them into something else. The RX8 swap sounds super interesting though, is there a kit to do that or will you have to fabricate everything yourself?

[@MrRock861261]

why dont you use use the fuel rail to the pressure side and you can do 4 injectors without changing anything.

[@LowbuckLS]

MrRock861261 I probably will do that next time, just didn’t have 4 of the graduated cylinders to measure fuel. Good idea though.

[@MrRock861261]

@@LowbuckLS you can do them individually. You dont have to do all 4.

[@LowbuckLS]

Ahh I see what you’re saying, good idea, will do that next to save some time, thanks for your input!

[@theKEVman011]

First Comment!