Quite possibly the dumbest, loudest, most hypocritical, childish and misinformed automotive forum on the WEB.

 

That has 1000x more rotary knowledge readily available compared to this forum. The posts on here speak volumes about how mechanically inclined its members are. Only on here would people need a thread on how to change your own oil.

On a sidenote, no disrespect to you Mazdamaniac. I've read many of your posts, and I respect what you have to say. I may be looking for AP tuning from you one day.

 

What passes as "knowledge" on that forum is mostly voodoo and smack-talk.

There is actually a lot of useful data over there, but it is old and buried in the noise.

This forum is mostly a "users group". The vast majority of the members here are not really "enthusiasts", just regular people with regular concerns.

Much of what gets pushed out here as knowledge is largely parroted from the 7Club. Whenever anything useful happens here, it is upheld to the metric of 7Club and if it diverges from the "convention wisdom" over there, it gets slammed.

 

hornbm,

I recently read a thread on rx7club.com that was started by and commented on by some of the most respected members on that site and they were bashing MMO so I'm not sure where you get that it is so widely coveted

 

The one thing to remember about the 7 forum is that it suffers from the same issues that every forum does. There are smart people giving out good information and there are dumb people giving out bad information. That happens everywhere. Even here. Fortunately may of the dumbest people there have left. That doesn't mean it is all good now though. It is just better. One of the biggest issues on forums is that often times some of the dumbest information comes from the loudest people who in turn sometimes get perceived as the experts. This is what sometimes makes it hard to weed through the crap to find the truth. There is definitely good info on the 7 forum and in many ways it is info that even some of the most respected 8 forum people should try to learn as the Renesis is a 13B and has the exact same issues like it or not. Again, the hard part can sometimes be finding that info.

 

I had the latest flash. He uploaded an even hire rate one for this new engine apparently.

 

spoolin i have a couple of questions if you dont mind...

did you use 87 octane?
did you redline frequently? or rather what were your common rpm ranges?

no carbon means an extremely lean mixture. i wonder if your apv wasnt functionioning.

 

I always run 93 and redline as often as possible.

 

Ask for more information about this. Is he saying there's a new flash that their service department is allowed to test on some cars? Or is he just confused? The former has occurred, but I'm skeptical.

 

There is no such thing.
There is a diagnostic available on the computer that allows manual control of the OMP, but that is only while it is connected.

 

well, i have only a little bit of experience with rotaries, but a lot with piston engines.

but that explains the lack of carbon.

and if your APV was malfunctioning from 6k or 7k & up your engine would be totally starving for fuel, and that type of lean condition will blow an engine.

basically you have a situation with high stress on the engine components, and a lean mixture creates much more heat than a rich mixture. so you start getting "softer" components from the hot spots, as well as detonations... and at a high rpm thing will go boom.

there is a bench test they can do at a mazda shop to test the APV to see if it's functioning.

and even if it is functioning, and your mixture is not quite so lean, running at redline constantly/frequently will blow any engine before it's time.

an average top fuel dragster team rebuilds their engines 184 times per year

 

are you for real ?

 

Yeah, I was sorta wondering the same thing.

Especially in light of the "7Club" part of the discussion.

 

wow,

and i am silly crazy with my running 87 all the time / not so much on track days! i would love to comment again about premix, but why..

jeff you have all my last parts of premix..

might have a part in my mix that might be fun.. but have not opened that box yet.

beers

 

so you guys would disagree with the idea that continually redlining an engine is bad for the engine?

well maybe i'm living in a fantasy world then, thinking that dirty thought.

 

pretty much everything you wrote , except perhaps the bit where you said you don't have much experience with rotaries

 

/\lol~!
I think this shows that continuous use of mmo is like bleach to your whites. Good here and there, put too much too many times and your **** is messed up/
I don't have any faith in mmo/my own opinion
Premix with quality 2cycle, not cleaner.

_mazdamaniac_unlike me you have the best avatars! Cheers to boobies!

 

the RX-8 uses a MAF sensor, it measure the amount of air actually going into the engine, and injects the proper amount of fuel.

thanks for playing.

i will say the concept is proper. but other wise..

 

really,

if you redline the motor alot. well the tips on the exhaust get white. and on the way home from a track weekend you get he best gas mileage ever.

hey,

but what do i know..

beers

 

LOL. At least he admitted most of his beliefs are derived from experience with a piston engine. Remember, the tensile stress in a connecting rod is proportional to the square of the rpm of a motor, so he can be forgiven (to an extent) if he has been conditioned to stay out of the nether regions of the rpm range.

Rotaties are different. Time to re-learn.

 

Nothing has been "shown" yet; we have a second-hand report of a mechanic's opinion on the cleanliness of a blown engine that did not die from lubrication failure. A Mazda mechanic, apparently flashing cars at a Mazda service department with non-factory firmware? A Mazda mechanic at a Mazda service department who is apparently free to crack open failed renesis instead crating them up? And we haven't seen the pictures that were promised two days ago.

 

I've premixed with Idemitsu for 10K miles on my rebuild and recently replaced my fuel pump due to the standard failure of starvation on left turns. The fuel filter sock was fine and not clogged at all. There was no evidence of any buildup or clogging of any kind due to the Idemitsu.

 

sure. life is all about learning and re-learning :D

all i'm saying is high revving engines (of any type) create more heat and friction. that means even rotaries. forumula 1 engines (short stroke v10 and v8 naturally aspirated piston engines) run 12k to 19k all day long. but they 1) have rock solid ignition 2) have high volume / extra lubrication and 3) awesome cooling.

giving people with stock engines that lack the extra lubrication and cooling and perfectly tuned ignition the advice that they must run around at 9k just seems odd to me. i'll try to get past that and re-learn my evil ways :D

in the mean time i'll do what i can to make sure that my personal rx8 has the best of those three items that i can provide her with

the guy on this site has rebuild hundreds of rotaries and only ever saw one that died from carbon buildup... only one. http://www.rotaryresurrection.com/2n...nt_damage.html

 

You need to improve your reading slills - read it again . He saw only one that CARBON LOCKED !
I believe most renesis engines that get replaced under warranty die from carbon buildup which eventually causes stuck seals and low compression .

Read this post from a guy that was working in the mazda Re-man plant :
https://www.rx8club.com/showpost.php...8&postcount=44

 

you are right concerning heat with high rpm causing increase stress to the tip of the rotors/seals that comes in contact with the housing.

however, we are not recommending you leaving the engine at 9,000 rpm, just ease that baby up there once or twice a day, to keep her happy. not much power increase beyond 8,000 rpm anyway.