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High RPM running. good or Bad or ok???

Discussion in '4 Cylinder' started by cs361, Nov 11, 2009.

  1. cs361

    cs361 [OP] Member

    Joined:
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    First Name:
    Derek
    Vehicle:
    1995 Toyota Tacoma 2.7L 4WD
    ok. so i have a 1995 Toyota Tacoma with a 2.7L i-4 engine. today when i was driving, i started to get on it pretty good. not bad but that truck redlines at 5200 RPM's. the highest i had it today was 5000 for a 1/16 of a second. is that bad for my motor? it didnt go over the red line. and also, when i start out in first, it tends not to wanna go and hesitate. any tips??? thanks
     
  2. chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    FlimFlubberJAM
    Tenoe, AZ
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    2013 Rubicon Unlimited,
    4.10 gears, sliders, lots of buttons, and yellow flashing lights on the dash.
    Reving it wont hurt a thing. Also, I cleaned up your thread a little...It was hard to read. ;)
     
  3. kingston73

    kingston73 Well-Known Member

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    Here, there, and everywhere
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    I'm sure it doesn't apply to all vehicles, but at least with the motorcycles I've owned, redline is the point at which the manufacturer didn't think it was safe for extended periods of time. In other words, anything under redline is definitely safe. The engineers design in some safety buffers, so even at redline you're not going to break anything.
     
  4. 08pretaco

    08pretaco Almost there

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    Oliver
    az
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    AFE pro dry s, Husky X-act Contour
    our engines are pretty well protected against doing harm to themselves with our driving them, so for split seconds that high i wouldnt worry about it
     
  5. chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, lots of buttons, and yellow flashing lights on the dash.
    To add:, I have had my First gen against the limiter for extended periods of time.....5 mins or so, of constant limiter usage. Never an issue. These engines turn around 1500 rpm than they are capable of spinning without damage. The limiter will not let it go into a danger area.
     
  6. supralight

    supralight Well-Known Member

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    Dan
    Earth
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    2013 4Runner limited
    I have a question about this though. In cold temperature, when over 5K rpm for an extended preiod of time, my temperature needle drops (water temp on scangauge too) to about 1/4 of the gauge. Nothing happens when running under 5k rpm, but if I get over 5K rpm for over 2-3 seconds, the temperature drops pretty fast. I have first noticed this today but had time to experience it a little. In a normal acceleration to redline in first, or second gear, the temperature has no time to drop significantly. Also, nothing happens if I don't go over 5K, temperature stay a solid 85 celcius. Also, when this happens, heat from heater ducts don'T seem to get colder...

    Is that a kind of safety device, and is it a known behavior? I guess there could be a cold shock in very cold temperatures we get here (-30 celcius). Thank you.
     
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