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Old 02-15-2010, 09:01 PM   #1 (permalink)
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Default Free Revving

Was wondering why free reving (hitting limiter/high rpm in neutral) is bad. I have a feeling that its bad, and a lot of people say it is. I never really did it, and I tell some of my friends not to do it (or I wont do it if they tell me to) so is this how engines can be blown?

Is it bad to free-rev an engine with no load?

That forum has some people saying that free revving isn't that bad, but maybe they aren't talking about hitting the limiter.

Check this bullshit out, obviously these people don't think its bad either

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Old 02-15-2010, 09:15 PM   #2 (permalink)
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wow...bunch of IDIOTS
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Old 02-15-2010, 09:18 PM   #3 (permalink)
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wow...bunch of IDIOTS
And the reason why I ask this question, is because if I call someone an idiot for doing it, I wouldn't know how to explain why its bad for their engine (oh and besides looking like total douchebags).
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Old 02-15-2010, 09:23 PM   #4 (permalink)
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IDK how to explain it, its just unnecessary wear and tear.

The rotating assembly is made to be under load (when bikes in gear, accelerating) It's not meant to just be revved for no reason.

Just tell them to use your brain.
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Old 02-15-2010, 09:26 PM   #5 (permalink)
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My nieghbor does this kinda crap on his GSXR 600, and it wont even be warmed up yet...

I think its pretty dumb even if your all warmed up.
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Old 02-15-2010, 09:35 PM   #6 (permalink)
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My nieghbor does this kinda crap on his GSXR 600, and it wont even be warmed up yet...

I think its pretty dumb even if your all warmed up.
thats really really bad if its cold IMO.

I dont rev my car or bike period until its warmed up.. by rev I'm including driving it... I like to let it warm up a little bit get the oil flowin in the engine before i put it under any stress
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Old 02-15-2010, 09:35 PM   #7 (permalink)
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Are they giving full throttle in neutral and just holding it there? WHY WOULD YOU DO THAT?
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Old 02-15-2010, 09:40 PM   #8 (permalink)
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Yeah I don't do this that much. I rev it a tiny bit every now and then, but I don't take it to the damn rev limiter. That's just ignorant. I like my shit to last.
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Old 02-16-2010, 04:42 AM   #9 (permalink)
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It just seems a pointless thing to do unless you're working on the bike and need some revs on.

There is a school of thought that suggests revving to the red line for a few seconds about half a dozen times in quick succession to bed in the rings on a new engine - after it's fully up to operating temperature. I'm not convinced, but there's no load on the motor so I can't see it doing any real harm unless you do it all the time or do it with a cold engine.

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Old 02-16-2010, 05:28 AM   #10 (permalink)
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Rev limiter is there to keep the motor from going passed it's operating limits. High Revving can lead to a valve being floated and making contact with a piston. I had a 2 stroke jet ski rev up and not wanna come down on me. I pulled the lanyard to cut ignition but by that time the spark plug actually got so hot that it was dieseling. By the time I ripped enough stuff out of the way to cover the intake the piston over heated and scraped the shit out of the cylinder walls.
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