I understand the importance of redlining the Rx-8's engine at least once a day to burn it's carbon.

But does it have to reach it's "Beeping" redline limit? Can the same benefits be achieved by keeping the raves up to 7,000-8,000 rpms?

The reason I ask is because sometimes I find it hard to reach a road long enough (or without much traffic) to reach the 9,000rpm.

However, there is a long stretch of road near where I live at where I can push in on 2nd gear above 7,000rpm almost reaching 8,000. And I can hold it on such high rpm for almost 20 seconds straight..

Is that good enough to burn some of it's carbon from the engine? Or does it HAVE to reach the limit until I hear that "beep"?

Thanks in advance.!!
Drumm

 

You don't have to hear the beep all the time . 6 , 7, 8 rpm will do just fine . Some people just like to hear it beep, that all. Your right not all of us have a long stretch to red line all the time , so I work with what I have .

 

The Beep and redline, by itself is not important - the WOT and high engine load/temp/EGT is what will vaporize the carbon.

S

 

Put it in neutral or hold the clutch and rev.. not too hard, or keep it in 1st

 

You can redline in 1st from a stoplight/sign in a 35MPH zone, without speeding. You can nail it in 2nd by merging onto the interstate, if the speed limit is 60 or higher.

Since I don't drive the 8 every day, I make up for it by redlining quite often when I do get to drive it. Or at least that's my excuse for such behavior.

 

This does nothing but make you look like a moron

The car needs to be in gear for this to be effective at burning out carbon.

 

No your mom does...

oh god, i have to go to bed, sorry.

I say just use first to get rid of the carbon buildup.

 

yeah, renesis07 is right, leaving it in neutral will do nothing for carbon buildup....see Stealth's response and you will know why

 

7.5k under load will open up all exhaust ports to allow "blowing" out the carbon

 

Just find an empty street. Turn off DSC

Rev to like 4k, dump the clutch. Give it gas and good mix of brake and all is good.

 

you must hate your clutch....lol
I would not recommend dumping the clutch to clear out carbon....that is abuse IMO

 

More fun to do that while still on the ramp - especially if it's got a nice curve.

Ken

 

Agreed. Just hope no one is infront of you...otherwise, you'll be going 20 mph on the curve.

 

which reminds me of my favorite speed racer mod, the projectile ramp..."oh no im about to hit that BLANK (insert what you want to hit but not actually hit)*whoosh* (out comes the projectile ramp that launched out in front of you*...WEEEEEEE, and over the BLANK you go.


by the way this mod doesnt exist i only wished it did as a kid.

handy huh? oh no im about to crash!!! why stop when you can RAMP!!!!

 

Thank you all... and for how long should one keep the revs up to allow "blowing" out the carbon? A few seconds? As long as you can?

 

20 seconds is pretty long. if you have 20 seconds, you can def reach redline, or high enough rpm. wot, high rpm, 20 second-stretch of road sound good enough for this exercise; the engine won't go "i'm not gonna blow my carbon out until he reaches the beep." just be safe on the road when you do this

 

LOL 20 seconds of road can get you to 110mph with this car... So like 6 or 7 would be fine i guess?

 

Ha, Ha. Sorry. 20 seconds is pretty long. I actually started counting those 20 secs. I guess in reality it would be more like 10-12 seconds of non stop driving around 7,000 rpms. Long enought time, I would think, to blow and burn all the carbon buildup.

Thanks again for your replies. Got the answer to my question.!

Happy Reving ya'll.!

 

Don't you use 1st gear on the way to 2nd? Why not beep it? What's with the 7000 rpm in 2nd thing? Even if carbon wasn't an issue, the whole point of this engine is its willingness to rev. Why get a rotary if you're unwilling to enjoy what it was designed for?

 

With first gear you're usually starting out from a stop, often with cars in front of you. Not necessarily the best time to go WoT. Also, it can give the impression that you want to street race if you start out by revving that high.

It's more convenient to do it in 2nd on a clear freeway on ramp. More fun too.

 

with redlining, is it normal to have a whizzing sound around say 7.7k rps to 9k and back down to 7k?

i haven't driven another 8 for a while, and just wanted to make sure. i think its normal. but would like to confirm thanks guys!
(sorry for thread jack! might help op in a wway or another :P)

 

This is a good thread topic! Among all the crap on this forum.

 

No long roads in america??? Wot

 

Hard question to answer because all we really know is that cruising around at low revs continuously is really bad for this motor .
Then again constant redlining has to be pretty tough on it as well .
I believe that getting the aux ports to open at WOT (6500rpm fully open in 3rd) on a fairly regular basis has to be a good thing .

 

I don't think 9k RPM is bad at all for an engine that is capable of 18k. (supposedly factory got a stock one that high). The problem is, 9k is rough on our transmission, mainly from a fluid overheating point of view. So holding really high revs won't hurt the engine, but possibly the transmission.

Just WOT to the beep, and back off, give it a chance to cool down, and do it again. I am certain that if you poke around your regular route, you could find places in which 40mph and 63mph are perfectly legal, and you can find them clear enough frequently enough. I have had 0 problems finding a spot to beep it even in rush hour mornings in Boston, Providence, New York, Philly, Baltimore, and DC. I am sure you can find somewhere in your location

At least that is my excuse for such behavior /quotejack