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  1. T

    Is it time to change oil viscosity?

    160, but it goes beyond that since I put in the front mount intercooler. I have to put in some higher rate cooling fans to fix it.
  2. T

    Is it time to change oil viscosity?

    I have a 1986 GN with around 108,000 miles on it. I'm using the factory suggested 10w-30 and have about 70 psi oil pressure when cold, but once it heats up the pressure drops to only about 17-18 psi. Should I switch to 10w-40 or 20w-50?
  3. T

    Intake Manifold?

    I already had switched over to studs and torqued to spec. Within a month the upper plenum was leaking again and when I took it apart 2 more bolt holes had stripped out and the aluminum was like powder. I then drilled out all the bolt holes and put in stainless steel inserts, put in brand new...
  4. T

    Intake Manifold?

    It's simple economics. Buying used is a good way to end up with the exact same problem which is something I want to avoid. I could buy used, install my upper plenum, and then find that those bolt holes have all stripped out, or broken off in a short amount of time and now I would be stuck with 2...
  5. T

    Intake Manifold?

    Too much money to spend right now. I took it out for a ride late Fall and the #5 cylinder stopped firing. I have to look into that come Springtime before anything else.
  6. T

    Intake Manifold?

    I'm still using it. I had to setup a clamping device to be able to keep using it. No way am I spending the ridiculous amount to replace it when just about every other engine made you can replace it for next to nothing.
  7. T

    ecuGN settings for 210 lb/hr injectors

    Does anyone know what the settings in an ecuGN would be to use Bosch 210 lb/hr injectors?
  8. T

    Cylinder 5 is dead

    I'm hoping it's the injectors, if not I don't have the room, knowledge or equipment to pull the engine and rebuild it. I can only imagine the cost to have someone do it for me where most mechanics around me are already closing in on $200/hr. for labor. Plus, there is no one close to me that I...
  9. T

    Cylinder 5 is dead

    Yes, it is a stock engine with about 107,000 miles on it. The engine has to be pulled out just to change the cam?
  10. T

    Cylinder 5 is dead

    Wonderful, it looks like this may be getting parked for quite a while. Are the #5 cam lobes a known problem with the GN's?
  11. T

    Cylinder 5 is dead

    Wouldn't a wiped cam cause a lot of other issues?
  12. T

    Cylinder 5 is dead

    Instead of a spray pattern it did seem to just run out, but I figured it was because it wasn't under pressure. I guess I'll have to see how it runs after I finally get the new injectors installed.
  13. T

    Cylinder 5 is dead

    Yes, I used a noid light and it tested good, The injector itself now seems to work, I have compression, and I have spark. Just to be on the safe side I replaced the spark plug and wire and also checked with a test light to make sure it was picking up the spark. It's all very confusing to me...
  14. T

    Cylinder 5 is dead

    This just keeps getting better and better. I took the #5 injector out and tested it with a can of carb cleaner, some vacuum hose, and applied 12v. The injector does flow, so now I have spark, compression, air, and fuel but it is still dead on that cylinder.
  15. T

    Cylinder 5 is dead

    Not yet, I've tapped on it to see if it would at least work for a bit so I could confirm that was the problem, but no luck, if that's it then it's completely dead.
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