alnielsen

iTrader: (4)

To be named later,
The whole "Redline Everyday", or as I like to say "A redline a day keeps the carbon away", thing started back with earlier rotaries. It's been around for quite a while. It didn't just start with the RX8. I know I would redline my RX7's after I was shown used rotor housings loaded with carbon and was told this was how to keep it from happening.

I have had 2 engines replaced in my car. First engine was replaced at 13K miles and the reason was it was unable to start while it was warm. Second engine was replaced at 24k miles and the reason was a coolant leak into the rotor housing. Neither of these would have prevented by redlining. And my car does get it's daily dose.

Yes, you can clear carbon with out redlining. A long trip, at moderate RPMs, will clean out the engine. Actually this will work better than the intermittent redline. However, how often do we get to get out on the road for a 100+ mile trip.

Sleepy Z may be a noob, but he at this point has opened up and rebuilt more Renesis engines than (almost?) anybody here. I think his input is very important and relevant.

cnaude

I used to own an 88 NA RX-7 that I redlined everyday as well. The engine lasted 180,000+ miles.

I redline my RX-8 every single day and it runs great.

Speedy400

Would running at a mid throttle at a sustained 8-9K for 5-10 seconds be as effective to clearing carbon as a WOT 1-2-3 shift at 9K?
What's the actual mechanism that cleans out the carbon?
From what I understand, at 7K another port opens, but does throttle position affect the carbon build-up or clearing?

kevinD1226

i dont do much highway driving and i bought my 04 used and i redline it as much as i can without gettin pulled over or anything and my car runs better now than when i first bought it, and ofcourse thanks in part to some of my mods but still..

To be named later

Okay, I am convinced...........redline it everyday.

Like most things in life, particularly when they are expensive "investments" it is better to question and understand WHY, than to just blindly take someones word and not learn why.

Thanks for all the info.

Question: What is the best way to get to redline? What gear? And how long should it be maintained at redline?

mysql

even though my engine has great compression and is functional, we'll be ripping it apart in a few weeks.

Since I premix, redline and don't baby it, it will be interesting to see the condition of the internals. Stay tuned ... Charles Hill will be doing the rebuild somewhere around June 10th - June 16th range. Just about everything is to be replaced including all seals and the rotor housings.

Engine has 51,000 miles on it.

VikingDJ

Well, I would believe,and someome can correct me if I'm wrong, that you can accelerate the RX8 once a day to redline easily by doing it more gradually and letting it reach a high rpm. It doesn't mean you have to romp on it and get it to redline as fast as possible often. Just not changing gears, and running it up to redline for a short amount of time to keep the engine running properly can be done in different ways.

Just running my Speed 6 with mild agression renders about the same acceleration as an RX8, but at lower RPMS. I do it without even having to rev of course because it has such much low end torque, and makes it's high hp at a low rpm. I would most definitely recommend getting the car to redline because it is good for the car, and there's no point to owning this car if you make 5-6k your max rpm anyway.

Most definitely you should run it at high rpms, but I don't believe that it's a MUST to pound on it, so you can achieve the same results just by winding out first or second gear on occasion, but keep the speed safe. Just my .02. Anyone who wants to disagree, feel free.

To be named later

I just took my 8 to North Park Mazda San Antonio for my first oil change since purchasing it, and the tech gave me the same advice: redline it every day, push it, don't baby it, be aggressive.

CarAndDriver

Look forward to the report.

DOMINION

Sweet! I want to know how it gos down. PM me when you start your thread. I want stronger internals too!

RX8JN

i see alot of people talking about redlining there RX8's atleast once a day and driving there cars hard, bcoz" thats the way its meant to be driven"


wont redlining and driving it hard damage your seals on your Rotary

Spinning Sushi

iTrader: (21)

Redlining your car will cause the entire universe to impload on itself, also known as the Big Crunch. This will cause a reverse time shift in the space time continuum in which will be followed by a Big Bang then there will be nothing but elements, gasses, and matter everywhere until gravity pulls everything together and create planets, star systems then galaxies. This, of course, will only happen if you redline your rotary engine. I hope this helps.

Mugatu

iTrader: (1)

Robonaut

I do have a serious question regarding redlining.

Are you supposed to just hit the redline and let the revs drop or are you supposed to let the revs sit at at 9,000 for a while?

RotaryP7

^ Good luck on gas though.

Renesis07

iTrader: (1)

Redline at least 3 times per day, average 17 mpg, 66k miles on original engine with no serious repairs. I'm convinced.

[]RhOdEs[]

There is one way to get to the bottom of all this i guess... get it in writing from a mazda dealer, that they recommend redlining and that it will not affect warranty if something were to happen. Yeah,,,,, like that will happen.... again,,, I luv the sound mine makes around 8k rpm,,, gota go for a drive,,,,, again!

alz0rz

iTrader: (41)

how the hell will redlining affect your warranty?! sure if your engine goes to **** for any other reason and you mention to them "OH YEAH ACCORDING TO THESE GUYS ONLINE YOU HAVE TO REDLINE IT EVERYDAY.. SO I BEAT ON IT EVERYDAY AND REVVED TO 9K EVERY TIME I COULD.. well then.. you fail"

Anyway, I've seen ATLEAST 2 mentions in this thread where the Mazda dealers THEMSELVES have told the owner to redline the car... DONT BABY IT.

alz0rz

iTrader: (41)

Just because you've driven a piston engine your entire life and you've come to learn that it self implodes at anything over 6,000 revs () doesn't mean the same will occur with something COMPLETELY different.

It's like comparing an apple to an orange, sure they are still fruit and healthy ones at that.. DOESNT MEAN YOU EAT THEM THE SAME WAY.

I WILL SAY IT AGAIN.... MAKE HER SCREAMMMM!

al

DOMINION

Rotarys eat gas like a Cow eats grass. Its just the way the Car is.

Hit the redline and shift.

unpocoloco

I'm not convinced by these arguments. Of course the dealer guy is going to say "redline her!" because that's what they would do if they could afford the car. No one is going to say "drive it really carefully and don't press hard on the gas pedal". And keep the music down! bah.

Just redline it when you feel like it and I'll bet it will be fine. Never redlining it is probably bad. In my opinion always redlining it sounds questionable as well, despite this plethora of hard statistics (what is our RX-8 postmortem sample size? 1 car? 3?). Usually the correct answer is somewhere in between.

fastlaneracing

I really dont understand the question.

Why buy a sportscar and not redline it? hell I even redline my Micra.

I have alwas driven my cars flatout and often changed engine oil, both piston and wankel. Never ever had any engine problems.

Remember even a piston engine dont like to be driven at 2000rpm mile after mile, rev it and use the engine.

DOMINION

unpocoloco, We are not here to convinced anyone. You ask we reply and tell you how it should be done and this "Redline" thing is from Mazda the guys that made this Car. So if you dont redline your Car oh well. Good luck. But keep inmind, carb build up kills lol