rev limiter question - Civinfo
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post #1 of 30 (permalink) Old 20th December 2015, 16:15 Thread Starter
 
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rev limiter question

I have one maybe noob question but I must ask Can i destroy engine if sometimes reach rev limiter?
Thank you!
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post #2 of 30 (permalink) Old 20th December 2015, 16:42
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the limiter is there for a reason, if it wasn't safe to reach it when the engine is hot then they wouldn't put it there.

however bouncing off the limiter will do a engine no good and will cause issues like stretched timing chains, you dont need to live on the limiter but reaching it now and again will do no harm.
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post #3 of 30 (permalink) Old 20th December 2015, 16:48 Thread Starter
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Quote:
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the limiter is there for a reason, if it wasn't safe to reach it when the engine is hot then they wouldn't put it there.

however bouncing off the limiter will do a engine no good and will cause issues like stretched timing chains, you dont need to live on the limiter but reaching it now and again will do no harm.
Thank you for answer.I was on limiter maybe 2-3 sec because road was wet and my revs was constantly on 8000k.That can harm engine?
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post #4 of 30 (permalink) Old 20th December 2015, 17:14
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no doing it rarely will not harm the engine, only constant limiter bashing will give you problems.
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post #5 of 30 (permalink) Old 20th December 2015, 21:43
 
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Don't worry, like Voodoo said - ocasionally nothing will happen. Generally hitting rev limitter is pointless as you loosing acceleration and max power is @7800, but every now and then especially on loose surface you will have that.
To make you feel better i can tell you that those engines are more like motorbike engines - prepared for abuse and rev limiter is not a biggest abuse they can stand
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post #6 of 30 (permalink) Old 20th December 2015, 22:14
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Honda's sales brochures state that they test run their engines at full speed for not hours but days. I am sure a few seconds will do no damage.
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post #7 of 30 (permalink) Old 20th December 2015, 22:25
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2nd to 3rd was the one that caught me out a few times, hits it so quick
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post #8 of 30 (permalink) Old 20th December 2015, 22:28
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Quote:
Originally Posted by dweezle View Post
2nd to 3rd was the one that caught me out a few times, hits it so quick
Yeah same with me, and first is pointless in this weather as all it will do is spin up through the gear causing a limiter bash.
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post #9 of 30 (permalink) Old 22nd December 2015, 01:13 Thread Starter
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Thank you all now I feel so much better.I was on my first drag race with honda R and road was very wet and I pushed car to his limits.Now I know I can not doing race with this car,I love him very much
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post #10 of 30 (permalink) Old 22nd December 2015, 14:40
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The group N map on a Flashpro will raise your rev limiter to 8600 so dont worry about it.

The worst kind of over revs are when you change down too many gears, no limiter will help when you let the clutch out at 10,000rpm.
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post #11 of 30 (permalink) Old 22nd December 2015, 14:48 Thread Starter
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The group N map on a Flashpro will raise your rev limiter to 8600 so dont worry about it.

The worst kind of over revs are when you change down too many gears, no limiter will help when you let the clutch out at 10,000rpm.
Thank you!You mean when you miss shift? Driving 120km/h and missshift in 2 gear.I have never done that.I only do not know why my reve was be constant on 8000 becase road was very wet,almost i do not know when to change gear I must wait sound of limiter.
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post #12 of 30 (permalink) Old 22nd December 2015, 19:31
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The K20's not like a normal engine, it's producing maximum power just as you hit the limiter so it's easy to do until you get used to it.
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post #13 of 30 (permalink) Old 22nd December 2015, 19:46 Thread Starter
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The K20's not like a normal engine, it's producing maximum power just as you hit the limiter so it's easy to do until you get used to it.
Thank you for answer.Do you know why my revs was constant on 8000 on wet surface?
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post #14 of 30 (permalink) Old 22nd December 2015, 19:51
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Maybe too much throttle whilst the car was struggling for traction?
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post #15 of 30 (permalink) Old 22nd December 2015, 19:55 Thread Starter
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Maybe too much throttle whilst the car was struggling for traction?
Yes it was full throttle.Road was very slippery.It was fake revs or?Can that damage engine?
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post #16 of 30 (permalink) Old 22nd December 2015, 20:11
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In a way you could call it fake revs.

Basically how it sounds is whilst you have your foot on the throttle the car is obviously responding by putting power down. If the power can't be put down (wheels spinning up due to weather conditions) then the engine will assume the road condition is fine and will attempt to put the power down, thus resulting in the high revs and no speed.

Hope that makes sense. It's just how I heard it in my head haha!

As mentioned above mate it won't damage your engine as these k20s are built to be abused. I just wouldn't make a habit of it. Soon as you feel the car loosing traction, just ease off the throttle.
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post #17 of 30 (permalink) Old 22nd December 2015, 20:20
 
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Revs wasn't fake, accelleration - yes
Forgot about getting stress about it - just go there once again and do it again
And for the future - just watch those yeallow lights on the left side of your speedo - when it gets closer to the end one just shift - you don't need to watch the revs, just those lights.
BTW - i bounced off the rev limiter today as well
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post #18 of 30 (permalink) Old 22nd December 2015, 20:21 Thread Starter
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Originally Posted by MarBras View Post
In a way you could call it fake revs.

Basically how it sounds is whilst you have your foot on the throttle the car is obviously responding by putting power down. If the power can't be put down (wheels spinning up due to weather conditions) then the engine will assume the road condition is fine and will attempt to put the power down, thus resulting in the high revs and no speed.

Hope that makes sense. It's just how I heard it in my head haha!

As mentioned above mate it won't damage your engine as these k20s are built to be abused. I just wouldn't make a habit of it. Soon as you feel the car loosing traction, just ease off the throttle.
Haha i am too scary for my car Thank you all now I am safe and sound I will off the throttle,i can not do that on drag race,I must win :P
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post #19 of 30 (permalink) Old 22nd December 2015, 20:22
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Just to add...
The revs are not fake. They are 100% real.

Your engine is putting the power down to move the car. What you have is a loss of traction due to road surface
Which in return causes the revs to increase faster like they do whilst pushing the throttle while stationary.

What I wrote above about them being fake was incorrect.
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post #20 of 30 (permalink) Old 22nd December 2015, 20:24
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I too bounced off the limiter today

I was too enthralled in accelerating down hill and the v tec roar made me miss shift haha!
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