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  1. Magic Spool Bus

    The Official 1HD-T/FT Fuel Pump Mod Tuning Thread

    What I will say is I have a 1hdt with quite a lot of fuel turned into it. I don’t roll coal but I do have the dark puff mudgudgeon is talking about. I also smoke white at high altitude and in cold temps until it warms up. I have never been able to solve the white smoke even with new injectors...
  2. Magic Spool Bus

    The Official 1HD-T/FT Fuel Pump Mod Tuning Thread

    Being that it’s sluggish out of 1st I would doubt it’s over fueled at and off idle. The white smoke you are seeing could be and issue of injection timing at that altitude. If you decrease fuel with the pin or the fuel screw it will only get more sluggish. I would look into checking my timing...
  3. Magic Spool Bus

    Mercedes OM606 turbo Diesel 80 series Land Cruiser

    Well its been a few years since any sort of update. I'm wondering how the swap has been treating you?
  4. Magic Spool Bus

    Roadwire leather seats installed!!

    Your interior is magical. Good job and thanks for sharing. I will definitely go this route soon.
  5. Magic Spool Bus

    Roadwire leather seats installed!!

    Has your dash had some work done on it? It looks soft and plush...
  6. Magic Spool Bus

    The 2H/12H-T/1HZ/1HD-T/1HD-FT Gturbo Alternative Tech Thread

    I played with the matchbot quite a bit for about a year before I bought a borg warner turbo. You will never be able to get extremely close to real world drivability unless you have some way to figure out volumetric efficiency and brake specific fuel consumption and many other key inputs it has...
  7. Magic Spool Bus

    1HDT Cylinder Head Performance Modifications

    Back again!!! The day has finally came and now I cant wait any longer to pull my head off the old 12V. I have some leaking valve stem seals that need replacing if I am to keep the old girl on the road. Tossing around the idea of buying a new complete head or a new casting doing some port work...
  8. Magic Spool Bus

    MATH+Logic: An engineering approach in search for a perfect TURBO.

    Yea I am using a custom divided manifold so that I can gain the benefits of the twin scroll housing. I don't believe there would be any benefits to running a twin scroll housing and not using a true divided manifold. I think its more acceptable the other way around though... i.e. there would be...
  9. Magic Spool Bus

    MATH+Logic: An engineering approach in search for a perfect TURBO.

    The 6758 is very similar it would be a better match for someone wanting more response lower in the rev range. I'm really not sure how much it was worth going twin scroll. On paper of course it has some benefits. The main issue I have with the 7163 is I just don't have the fuel to match it yet. I...
  10. Magic Spool Bus

    MATH+Logic: An engineering approach in search for a perfect TURBO.

    Its still going strong. Just know its an expensive option. If you end up wanting to get a rear housing that's twin scroll you also need to get a manifold made to fit it. Sometimes I wish I would have went the EFR 6758 which is a little smaller than the 7163. The 7163 really doesn't do much...
  11. Magic Spool Bus

    The Official 1HD-T/FT Fuel Pump Mod Tuning Thread

    Yea my pins are ground so deep that they don’t touch the follower pin on full depression.
  12. Magic Spool Bus

    The Official 1HD-T/FT Fuel Pump Mod Tuning Thread

    I know what you mean. Yea I leave the pin in and the diaphragm but I remove the spring. I leave the boost reference line on and it just shoves the pin all the way down or you can just push it down before reinstalling the the cover. Make sense? I guess by removing the pin I mainly mean I remove...
  13. Magic Spool Bus

    The Official 1HD-T/FT Fuel Pump Mod Tuning Thread

    This is a solid info. @KiwiDingo always tried to get me to tune like this by tuning the main fuel screw first with no compensator in to get max safe EGT under WOT. Then tune my compensator as more of a fuel removal method rather than thinking of it as adding fuel. I have still yet to try this...
  14. Magic Spool Bus

    The Official 1HD-T/FT Fuel Pump Mod Tuning Thread

    I would be less concerned about the profile and more concerned about the lumpy grind. The profile isn’t so much the problem, you can alter pin travel with shims to limit peak boost fueling for EGT and you can also effect pin travel with the star wheel for better low down response. What I mean...
  15. Magic Spool Bus

    The Official 1HD-T/FT Fuel Pump Mod Tuning Thread

    Which turbo from G Turbo are you running? If its the green wheel then you will always be plagued with high EGT's if the fuel is wound up. s*** grind though either way. You could try smoothing it out a bit as someone else mentioned it could be getting hung up. Could also try increasing spring...
  16. Magic Spool Bus

    The Official 1HD-T/FT Fuel Pump Mod Tuning Thread

    I have 1 pin with my own grind and 2 other pins. 1 from eclipse and one that is known as the power rod. None of them have a fuel cut ramp.
  17. Magic Spool Bus

    The Official 1HD-T/FT Fuel Pump Mod Tuning Thread

    I believe you are correct about being past the capability of the pump. All my pins will allow max travel from the pump. Some of them don’t even touch the follower pin at the deepest side of the ramp. The pump was rebuilt a year ago and injectors as well. I get plenty of fuel on the bottom end...
  18. Magic Spool Bus

    The Official 1HD-T/FT Fuel Pump Mod Tuning Thread

    I should have been more descriptive in the post. I have AFR gauge and I also have multiple pins. I can obtain max travel on any of the pins avoiding fuel cut. I have the pump setup to its near limit I suppose in terms of the main fuel screw but im more interested in the fine tuning of where and...
  19. Magic Spool Bus

    The Official 1HD-T/FT Fuel Pump Mod Tuning Thread

    Last time I did that it just made me want to leave the pin out for good 😂 I’ll give it a go though with this turbo and see what it feels like.
  20. Magic Spool Bus

    The Official 1HD-T/FT Fuel Pump Mod Tuning Thread

    Howdy Gents! At this point I'm no stranger to fiddling with these pumps, however recently in the last year I have went to a slightly larger turbo than most do and have gotten the bug to find a sweet spot for fueling. It runs well as it is but my EGTs are pretty cold most of the time 450-550F pre...
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