R&D Injector Durability Test Results

Discussion in '6.9L IH & 7.3L IDI Diesels' started by Thewespaul, Aug 5, 2018.

  1. pelky350

    pelky350 Full Access Member

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    Noticed more power with diesel extreme? Or just smoother running?
     
  2. Thewespaul

    Thewespaul Supporting Member Supporting Member

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    Both id say
     
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  3. TurboSurge

    TurboSurge Full Access Member

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    Heck yea! I’ve used hot shotters secret with great luck. Just as Wes says, it’ll help the idle and power. I would always fill the fuel filter halfway with it and the other half tranny fluid when I did a service. Seemed to help a lot. Anyone ever just run red dye? I don’t know if it has anything different about it other than than lack of tax but it felt as though the truck would run better on it as well. Sorry not trying to high jack! Just a thought
     
  4. Thewespaul

    Thewespaul Supporting Member Supporting Member

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    For years I thought it had a higher sulpher count, but I talked to someone in the petroleum industry and he said it’s exactly the same, which makes sense since it would be a lot of trouble to make a whole other batch mix for off-road diesel
     
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  5. 79jasper

    79jasper Chickenhawk

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    It used to be. I think 10 or 12 it changed.

    Sent from my SAMSUNG-SM-G920A using Tapatalk
     
  6. Macrobb

    Macrobb Full Access Member

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    One thing that might help/harm this is whether you 'work' the truck or not. I've found that hooking a big heavy load behind the truck once in a while and towing it uphill a few times(In my case, I get the opportunity to do it once in a while without 'make work') seems to help clean up carbon deposits and get things running better.

    Friend of mine went to pick up an IDI Van on the car hauler about 8 hours away; came back having /nearly/ blown a head gasket on the way up(he basically floored it up a big long grade until the temp gauge nearly hit the H, then kept it there the rest of the grade)... but I'll be darned if it doesn't sound better and smoother than it ever did before.



    Spray pattern wise, I personally don't care. If it seals good and holds pressure consistently, that's fine. The "pintle-less" Stage 1 nozzles don't spray well, but seem to run just fine. As long as you've got the air for it, they are nice(the Stage 1s are just modified R&D Chinese nozzles)
     
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  7. Thewespaul

    Thewespaul Supporting Member Supporting Member

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    Good point. These engines really need to be worked and to get hot, IDIs that putt around and never get up to operating temp have problems like this:
    EB451DDC-E96E-487F-AC03-71747059FFA1.png
    I find it interesting that the engineers decided to block off multiple coolant passages on the 7.3 to keep more heat around the cylinders instead of putting a higher temp thermostat in.

    The shop truck gets worked pretty hard, it pulls a good sized trailer at least once a week, as I pull an 18 ft trailer up to the church we go to every Saturday, because I volunteer up there to take care of their landscaping and event fields. It’s not hooked up to a trailer every day, but it’s the truck I take to pick up engines from the machine shop, and to drive out to pick up more cores, not to mention drag racing the truck on the weekends.

    I don’t think carbon buildup was the cause of the issues with the injectors, they were real clean when I pulled them out, and since they have been pulled out and reinstalled a few times over the 75k miles, they have always had new washers under them
     
  8. Clb

    Clb Another old truck Supporting Member

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    Not to hijack nuthin, but...
    +1 on loading down heavy and working the governor(?sp?)

    Somewhere we had a spray/pop test pattern thread.
    I think it was pre moose mister \ r-d stage xxx days tho.
     
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