miss shifted and reved my 3.7 to 8k! - Page 2 - Ford Mustang Forum
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Your engine is probably fine. Good thing you didn't spin out though. That kind of thing can be dangerous.


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Sean Reilly
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Quote:
Originally Posted by vivix View Post
Fuel and spark cutoffs have nothing to do with this btw- it was a mechanical over rev. Jamming it into 1st at the top of second will force the engine up to whatever speed that would require, probably a lot more than 8k (where your gauge stops).

Keep an eye on it, listen for anything weird, and change the oil/ trans fluid and look for anything scary in there
Well Paul........Yeah it Actually Does INDEED have something to Do with the Over Rev. that He Performed........
And the reason Why, is because at that Point (No Fuel, or Spark) It is Called a "COLD Over Rev.".....Therefore the Chances of Catastrophic Engine Failure IS Expediently Reduced!.....Compared to an Over Rev. that happens with the Engine actually Combusting!......
It is akin to Missing a Gear (But as I Stated, His Clutch most likely was the Mechanical Part that took the Most Damage.......

Sean.

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did the same thing at the track over the spring. as soon as i felt the car lurch forward and realized wtf was going on i popped the clutch in, i saw almost 8k before i caught it. besides leaving a flat spot in my drag radials when my tires locked up which scared the crap out of me... my motor and trans are fine. not somthing you ever want to do but it can happen if your trying to shift fast and pull back the wrong way.

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Yup, that's called a Money Shift. I saw it in person (in my friend's Subaru) and luckily she just glazed her clutch and flywheel. Lots of times it causes damage to heads. If you don't hear any unusual noises, you may be just as lucky.

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May not be relevant, but I've heard Matt Farah from The Smoking Tire refer to Porsche's over-rev count in their cars. Apparently there's a computer parameter that measures how many times an over-rev has occurred, and that's a big deal in the used Porsche market. I don't know much about it personally, but if they care enough to count the over-revs it must be something that, while horrible, isn't a game over for an engine. I'm interested to read more about what this does to an engine not to mention the drive train.

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