To show off the full range of my exhaust. Revving the engine when in neutral doesn't hurt it at all. That's the point of the rev limiter.

 

until you spin a rod bearing or throw a rod

 

Just to clarify things. My stock limiter was 4500 rpm In neutral and 5500 in all but 3rd, 4th and 5th. The speed limiter was reached before the rev limiter in those gears. I had it changed with a tune to 6500. Useful in the dunes.

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Some times I really question your credibility tarajerame, I really do.

Ok, that puts a .45 slug in my theory. Unless I do any kinds of heavy modifications to my engine, my 4500 rev limiter will just stay.

 

I'd have to do a bit of research to verify this, which I'm not willing to do, but I THINK the input shaft to the TC is always connected to the engine and, the output shaft from the TC is disconnected from the transmission if the system is in Neutral or Park? So, you're going to spin the TC like crazy if you were able to up the rev limit in N or P. Ballooning is not good for the TC.

In a manual transmission, there's a clean "disconnect" from the transmission if the system is in N or P. You're not spinning that viscous fluid "clutch".

In summary, I think a rev limit of 4000 is there for a reason, and I wouldn't muck with it.

- Jack

 

With any transmission the engine is always turning the transmission input shaft. Unless you depress the clutch with a manual transmission. When you shift into neutral the transmission input shaft is disconnected from the output shaft.

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Hmm - my manual tranny doesn't have a "P" - just a N, 1, 2, 3, 4, and OD.

Like JMC said, unless you disengage the clutch, the input shaft is spinning.

 

Your truck doesn't back up?

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Why is neutral different from going down hill in a low gear? There is a downhill angle that puts no load on the front of the transmission - it seems that this is the same as neutral. I don't think any damage would be done by going down a hill in a low gear at 5000 RPM for a little while.

 

You got me! Yes, it has a R!

Don't try to make me think before lunch!

 

Hell, I was trying to think after a martini when I added a Parking gear to a manual transmission. :o The combination of "aging" and "pickling" sometimes takes its toll.

- Jack

 

OK, in for a penny, in for a pound. Might as well see if I can't make a fool of myself here.

There's nothing really wrong with 5000 rpm anytime, although it WILL heat up your transmission fluid, which shortens its life. As has been said earlier, the TC starts to "balloon" due to the extreme internal pressures at 5400 rpm.

I suppose raising the rev limit to 5000 in Neutral or Park would not really hurt anything, but it seems kind of pointless.

But, the rev limit functions by cutting off spark and fuel during acceleration. During engine braking, the rev limiter MAY increase the engine braking effect due to this action, but it won't disconnect the drivetrain. And, engine braking DOES heat up the transmission, just like high loads at high RPMs do.

- Jack

 

has anyone had an rev-limiter cut off? not my cup of tea but a local tuner over here said that rev cut off is possible only for chevy's not for fords.... just wondering anyone?

rev-limiter cut off is like this

http://www.youtube.com/watch?v=xLp0b...eature=related

 

Every fuel injected engine has a rev limiter. If you press the accelerator to the floor the engine will rev till the rpm reaches the set maximum and the computer will limit the engine speed to that set maximum.

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don't take anything to that "tuner"