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  1. W

    WMO Filtering System-Needs Completion - $400 free shipping

    Looking to save money on diesel fuel? How does less than $1 per gallon? This system is just what you need! $400 or best offer. This system will filter your waste oil down to >1 micron. That's better than any fuel filter I have ever seen on any diesel engine. If this system was...
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    Dual IP with a twist - Hello me brainstorm this out

    So lets say I build this and it works well. Its running with enough turbo to blow in something like 50psi. What happens if one of the IP's fail on me? My assumtion is that the only thing is that I lose power, but only down to the level of what a single IP IDI would have. The excess boost...
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    Dual IP with a twist - Hello me brainstorm this out

    All worries about injector and line bottlenecks are solved with a dual injector setup.
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    Dual IP with a twist - Hello me brainstorm this out

    Lol, one of many reasons I want 2 independent fuel injection systems. The engine will be able to run off either or both, so if one dies, the other is there to take up the slack.
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    Dual IP with a twist - Hello me brainstorm this out

    I am playing with the idea of a stepper motor controlled by a simple microcontroller that monitors manifold pressure, throttle position, vehicle speed and EGT, that handles the second IP. For someone not familiar with basic electronics it may sound a bit pie-in-the-sky, but it's actually...
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    Dual IP with a twist - Hello me brainstorm this out

    Mel, I did some looking and realize that the glow plugs don't seem to have any threads in the precombustion cups, so assuming I can stuff a second injector into the head, I won't have to tap the inconel, just cast iron. Much easier! You're saying that I won't have space to enlarge the...
  7. W

    Dual IP with a twist - Hello me brainstorm this out

    That's good to know. A little more flexibility in rotation might be useful.
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    Dual IP with a twist - Hello me brainstorm this out

    In my experience, it shouldn't be an issue. My first personally owned diesel was a 1966 GMC Newlook (aka Fishbowl) transit bus with a 6V71 Detroit that started the same way, even in 0F, without a block heater... But it did take more cranking and sometimes a second ether pill.
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    Dual IP with a twist - Hello me brainstorm this out

    My understanding is that the FSS kills fuel to part of the IP. If that's true, doesn't that mean the IP with the FSS turned off would be turning at half crank speed with no fuel circulating inside it, and therefore no lubrication, since the fuel flowing through the IP is the IP's lubricating...
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    Dual IP with a twist - Hello me brainstorm this out

    Leeland, thank you for that. That's a lot like I'm going for, but with dual injectors as well. I expect dual injectors to give a more streetable engine and let me have more control over how long fuel is injected for. If I needed to, I could time it so the second IP didn't start injecting...
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    Dual IP with a twist - Hello me brainstorm this out

    No, but there is enough of a selection of off-the-shelf gears and chain drives available that I shouldn't need to actually make any gears. A case to mount the pumps to and a chain drive is the direction I'm leaning towards. Simpler than gears and just as strong.
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    Dual IP with a twist - Hello me brainstorm this out

    My hope is that both IP's can be turned down at idle enough to give a steady factory like idle. There will be a staggered or progressive throttle setup where both IP's feed idle fuel, then one IP will be increased to its full throttle position, but at roughly 40% pedal travel. Then the...
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    Dual IP with a twist - Hello me brainstorm this out

    Dual IP with a twist - Help me brainstorm this out My first experience with a diesel engine was in the Navy with the 12V71 Detroit 2 strokes. They have a dead simple and very elegant cold starting procedure. 1) Crank until you have at least 3 psi oil pressure, then stop cranking. 2)...
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    IDI "What if..." Durability and build question

    Wow riotwarrior, that's the best breakdown and explanation an engine I have ever seen! Thank you. Based on that, its pretty clear to me that of I can build a 600hp IDI, it will still be a very reliable engine. Its pretty clear that this engine has not been asked by many to live up to...
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    IDI "What if..." Durability and build question

    No, I'm sorry. I reject your reality and substitute my own. I can't agree that the newer designs could be better, no matter how true it is. No, my sliderule designed smoker is better. Unless we want to talk emissions. But if thats the case, I'll just stomp the throttle and drown you out...
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    IDI "What if..." Durability and build question

    Thanks for the history lesson freebird. It still would have been nice for hypermax to help the community. Maybe they could have even made a few bucks along the way. And as for the guy who tore it down and never ran it again, shame one him! May his diesel always gel and his egt's never run...
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    IDI "What if..." Durability and build question

    Actually wood, the number of head bolts can be a very big deal. Very much like the number of lug nuts does. If one head bolt can give 100lbs of clamping force before you rip threads out of the block or snap the bolt or stud, then the only way to get more clamping force is more bolts. That...
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    IDI "What if..." Durability and build question

    Thanks for the links 88 Ford.
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    IDI "What if..." Durability and build question

    Man oh man what a great conversation! I went and played with my bicycles all weekend and I come back to all this! So, my take so far is that because of the fuel limit, noone has real-world experience to draw from on these engines much past 450whp. Im not counting the hypermax build...
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    IDI "What if..." Durability and build question

    Guys guys guys (and girls if there are any here), remember, for the purpose of this thread, the fueling problem is solved. The reason I threw that in was for this very reason, fueling seems to be the big limit. There are talks on many diesel boards of stupid high hp IDI's, but somehow...
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    IDI "What if..." Durability and build question

    Let's remember that in this hypothetical build, the fuel supply is at double the "normal" DB2 levels, so this engine gets 180cc's of fuel any time we want it. If we can feed the fuel, what do we get to break, in the engine, and what do we have to do not break it? Bedsides get oit of the...
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    IDI "What if..." Durability and build question

    Life expectancy would have to be a compromise for sure. My stock 93 has 305k and still runs so good that I made the previous owner prove it was the original engine and not a rebuild, and I've heard of 600k+ IDI's. The purpose of the extra power is work not play, usually, so if the extra...
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    IDI "What if..." Durability and build question

    Edited the OP by adding a paragraph at the bottom about assumptions regarding boost.
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    IDI "What if..." Durability and build question

    kc0stp, or anyone. Where can I learn more about these 6.9's that are making big power. Everything I have seen generally lumps the 6.9 and 7.3 together but the 6.9 is favored for its thicker cylinder walls. For the most part I have seen the IDI engines top at the 450 whp neighborhood and the...
  25. W

    IDI "What if..." Durability and build question

    Well, yes. To gain more power from an IDI engine. Usable and reliable power.

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