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  • Users: TurboME
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  1. TurboME

    Cause of incorrect lambda reading ?

    I'm having trouble pinpointing the cause of a puzzling situation. I'm working with a GDI engine and using an injector with a sub optimal spray pattern which I believe is causing excessive cylinder wall wetting. Cold start is very bad. At WOT the engine's wideband lambda sensor is outputting a...
  2. TurboME

    Engraving glass

    Has anyone here successfully engraved glass with a VMC mill? If so can you tell me what type of end mill, speed and feed you used? I'd like to engrave a logo into 1/8" borosilicate.
  3. TurboME

    A193 B8 CL2 vs A193 B16

    How does the high temperature performance (above 1000 degrees) differ between these two grades? According to ASTM A193 the yield strength for B8 class 2 (strain hardened 304) is almost the same as B16 (cr-mo-va), 100 ksi vs. 105 ksi. My understanding is 304 shouldn't be used above 900 degrees...
  4. TurboME

    Thermal Expansion

    What is the best way to quantify the effects of using an ASTM A193 B16 alloy stud with a threaded 1018 steel flange? The thermal expansion coefficient of the stud is about 14 F^-1 and 1018 is 6.7 F^-1. Is there a standard regarding this? Is this difference something I should be concerned...
  5. TurboME

    What type of contol system do I need?

    Please bear with me, I have little experience with control systems but I have some basic understanding how they work. I want to create, what I think should be a basic system, that regulates a pressure drop between two fluids. The system will consist of an electro-proportional valve that...
  6. TurboME

    What are car vents made of?

    Kind of a strange question, does anyone know what type of material auto manufacturers typically use to make the heating/ac vent slats?
  7. TurboME

    Dual Stage Fuel injectors?

    Hi, I've been reading this board for awile but this is my first post. I'm wondering if anyone here knows much about "dual stage" fuel injectors. I'm not talking about using two differnt sized injectors. I have been told that there are new large injectors that flow like a small injector...

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