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  1. Macrobb

    Matching Flywheel Balance to Flexplate

    Honestly, you can use it without balancing - it'll work fine. But yes, I'd expect any shop that can balance something to be able to balance a flywheel to match another one. It shouldn't be off by much.
  2. Macrobb

    Combine powered f250 diesel

    Some day I want to do something like that with a Bronco - Some sort of mechanical tractor diesel motor; bet it'd get pretty decent fuel mileage!
  3. Macrobb

    What oil do you use?

    I use Mobil Delvac - good enough, and cheaper than most, when they have a rebate.
  4. Macrobb

    Can I replace my CDR valve with an oil catch can?

    Probably slightly negative at worst, but *too* much negative and you'll end up basically vaporizing oil, which the engine will run on, which is why the thing exists in the first place - Ford evidently tested something and (likely) found out that at high RPM, with a 99% plugged air filter, you...
  5. Macrobb

    Which turbo is preferred?

    Are either of these turbos wastegated? If so, choose the wastegated one - it'll be smaller, better suited for mid-range boost, at the expense of top-end(generally not an issue unless you go with larger-than-stock IP). When it comes to the Banks Sidewinder wastegated model vs the Ford...
  6. Macrobb

    '94 Turbo 7.3L IDI oil pump inspection and specs needed.

    Oil pump, unless it looks/feels like it was damaged, is going to be fine. They don't generally wear out, and the factory ones are better than new aftermarket anyway... It pumps so much oil as it is that a little leakage isn't going to affect anything. Low oil pressure at idle is caused by a...
  7. Macrobb

    Can I replace my CDR valve with an oil catch can?

    The CDR is generally open at all times - and usually fails open. It doesn't stop crankcase pressure usually, and if you are having high crankcase pressures, check for a clogged air filter, as that would cause (major) negative pressure in the intake. Remember, these IDIs produce a *ton* of...
  8. Macrobb

    What are the chances of it being just a head gasket failure?

    Yup, sounds like a head gasket to me. Just make sure you tear into it soon. Or, if you don't plan to, drain all the coolant, and fire the engine up for ~30s or so(not much longer), to get all the coolant out of the cylinders. Don't want any rust or coolant in the oil.
  9. Macrobb

    Chasing air leaks

    Just a heads up, replacing injectors with a worn pump is not a good idea. Why? As the IP wears, timing gets retarded, but is counteracted somewhat by the injectors wearing and making it easier on the IP to inject(comparatively advancing the timing). Add a new set of injectors with the worn pump...
  10. Macrobb

    Alcoa nuts

    Seems like at least 80% of the nuts I see on these IDIs are 1 1/16" - either black taper nuts or flat washer backed ones(for dualies)
  11. Macrobb

    Losing coolant from what looks like behind the flywheel.

    The Autozone pumps work just fine. And lifetime warranty, and cheap. Done!
  12. Macrobb

    In case of EMP

    Yeah. To even get any fuel economy with a C6, you need a really low-stall torque converter(to reduce slipping), 3.55 gearing(and even that could be taller)... and go 55MPH max? (I'm averaging 15MPG, with my 5-speed+GVOD, but it's not a new engine by any means. And I don't go slow, either).
  13. Macrobb

    Anything special about the 12 point bolts for the timing gear?

    Get some Grade 8 fasteners and use them for now, then order the correct bolts and swap them out when they come in?
  14. Macrobb

    Dixie Va will pay top dollar cash

    If you have to, just disconnect that line at the injector, shove some rubber hose over it and either run it into a bottle or into the return system. You'll be running on 7 cylinders, but it will run and drive. Also, if the line split... chances are your vibration dampeners on the lines are...
  15. Macrobb

    Front crank seal

    That's probably *part* of your leak, and why it happened now; instead of putting a slight negative pressure on the crankcase, you've got a slight positive pressure(from the gasses having to escape by themselves), so instead of the front seal leaking "inward"... I personally don't see any reason...
  16. Macrobb

    Newbie here with a 1990 international 7.3 idi bus. Needs help

    These days, I'd say either get a name-brand(Dewalt, Milwaukee) or HFT battery-powered 1/2" impact gun, if you can, especially if you intend on working on the vehicle at all yourself(or other vehicles). They are going to be more expensive than the HFT electric gun, but if you have to carry a...
  17. Macrobb

    Losing coolant from what looks like behind the flywheel.

    Either way, grab a new water pump and just swap it out. IMHO, get some Permatex 1-minute gasket and use that for your gasket sealing; once assembled you can just fill it with coolant and drive it, no waiting unlike most RTVs. You'll need to thoroughly clean the mating surfaces and get all the...
  18. Macrobb

    Building a better db2

    So is that fuel curve from the 90cc pumps you have in the store? (I'm assuming yes) Also, what are you setting the governor to? Is it possible to adjust for 'taste'? I mean, I like that curve, but I'd want it to cut off at a max of like 38-3900 RPM; if it's not pulling fuel at 4K(probably for...
  19. Macrobb

    Huffing

    Collapsed lifter. Don't worry about it - Once the engine is running and built up oil pressure it should go away after a minute or two.
  20. Macrobb

    94 idi turbo engine replacement

    Yes; you can even do it in the vehicle with the trans removed. There's a rear plate that unbolts; at the bottom it seals to the oil pan. But you can just re-silicone it without removing the oil pan.
  21. Macrobb

    Oil Pressure Question

    The dash gauge is just a switch; useless. It only reads ">7 psi" or off. Otherwise, what I usually expect to see is ~12-18 psi at hot idle, ~25-40 at 2000 RPM, and a max of perhaps 55 when cold at high RPM. In your case, if it's measuring higher than that... wow, that's good I guess.
  22. Macrobb

    need a definite answer: will a 5.9L cummins starter work in a 7.3L IDI ?

    By '95 and up' I'm guessing you mean 7.3 PSD? If so, it's actually 94.5 and up, but more importantly, the difference is that the nose is 1/2" shorter. An IDI starter will 'work' on a 7.3 PSD, but it won't disengage - you'd have to add a spacer if you wanted to use one. Vice versa, obviously...
  23. Macrobb

    Hydro Lock PSA

    So how did it run like that? I'm guessing that with the rod still intact(if bent) it'd still run... but perhaps have a dead cylinder?
  24. Macrobb

    Just a random thought: IP electrical connectors

    One bad plug will short cycle quite a bit; two dead plugs will make the system worthless. I personally test them with just a(10ga or so) wire to battery+ - touch the tip of each, and if you get a good spark, it's good. No spark, or one that's much weaker than the others and you should pull...

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