chris_04_rx8

NOW FIRST OF ALL THIS IS ON THE ORIGINAL MOTOR WITHOUT REBUILD/REMAN

IF THE MOTOR HAS BEEN POPPED APART PLZ DO NOT POST IT ON THIS, THANKS

Ok so since my motor finally decided to go and was basically undrivable ,tho i could have gotten another 100 or so miles out before it just stopped cranking,

I was thinking, HOW MANY MILES DID OTHERS GET OUT OF THE ORIGINAL ENGINE???

SO just hit the answer in the poll that best fits your mileage and post a description!
THANKS GUYS!!

alnielsen

iTrader: (4)

How is this any different that this existing thread?
https://www.rx8club.com/rx-8-discuss...engine-165164/

RIWWP

iTrader: (2)

sigh, another one.

https://www.rx8club.com/rx-8-discuss...essage-248775/
https://www.rx8club.com/rx-8-discuss...survey-202333/
https://www.rx8club.com/rx-8-discuss...-144669/page3/
https://www.rx8club.com/series-i-tro...ents-mt-73517/
https://www.rx8club.com/rx-8-discuss...e-98200/page2/
etc... there was one like 2 weeks ago too.


There are a number of problems with ANY poll or survey like this:
1) The people that will see this poll are already more likely to have had problems with their 8
2) There are numerous ways that the engine can fail that have NOTHING to do with the engine mileage. For example blowing the seals because a dealer put 87 octane in it. Thermostat sticking and popping a coolant seal. Boosting the engine and doing something wrong. Dropping a screw into the intake and turning the engine over anyway. Running it out of oil. Fuel pump failure that creates a damaging lean spike. Sitting without running for a year or more and the seals rusting in place. Driving through a deep puddle with a low-pickup cold air intake and breaking stuff with the water ingestion. Cat failure that over-stresses the engine. Getting a rock through an oil cooler while at speed. Need I go on? (Yes, I have seen examples of every single one of these)
3) Many owners have NO idea if they are on the original engine or not, as they bought 3rd party and haven't done research to find out.
4) There were plenty of engine replacements that WERE NOT engine failures.



Have fun with the poll, but please don't think you will draw any conclusions from it.

chris_04_rx8

I was wanting a poll to put it all together and i couldnt find one,

so i created this to make the data easier to collect,

alnielsen

iTrader: (4)

You won't get actual "data". People buy and sell their cars. They come and go from the site. Not all RX8 owners come to the site.
These threads turn in to people looking for a shoulder to cry on.

chris_04_rx8

well written, i guess i hadnt thought it out as much and didnt pick up on the multiple other threads that are the same,
my bad guys. I SAW NONE with the info i was trying to collect none that went over 100k on poll and etc.

RIWWP

iTrader: (2)

Check out this: https://docs.google.com/spreadsheet/...thkey=CIKRnsoL

Far more information about engine failures than anyone else tries to collect, but I still got less than 100 responses, and it still doesn't enable anyone to draw any conclusions.

chris_04_rx8

i understand that, its more or less a *members, how many miles is/was your engine at? and a did mine last the longest?? JUST a general overall estimation on the amount of people on here getting real life mileage out of the car without replacing/rebuilding it. I myself have never had a car to blow up like this, and render it useless, and i have owned fords with 200k+
new boosted cars, bikes,trucks and all, all with some mods and some with all mods (lol)

I dont care that the car died, i enjoyed it didnt get attached and now im parting it out to recoup

9krpmrx8

iTrader: (46)

Not to mention the thread title doesn't make sense. I have 143,000 miles on my 8. But that means nothing when you consider it took 4 engines to get there and that the failure of each engine was a bit different.

RIWWP

iTrader: (2)

I bought a 2002 Corolla brand new. It's engine blew at 62,000 miles. Shattered, lots of damage, undriveable.
At 96,000 miles, my RX-8's engine was diagnosed as low compression, still completely driveable.
My 1999 Miata had TWO engine failures.

A low sampling rate skews the results quite a bit, and if I was to take my own experience, piston engines are complete and utter garbage.

(well, they still are even if they don't blow up, and even if I'm the one blowing them up)

chris_04_rx8

It seems the google doc will not load for me, but then again mike i dont think what im looking for is details or a technical analysis of this all i just want to say

MY CAR HAD 151,364 MILES WHEN SHE DIED ON ORIGINAL MOTOR BEAT THAT!!!! lol

and see if there are guys on here pushing those limits and getting the goods from the not so good renesis,
but then again im not a rotary guy, im just a weekend warrior a car nut and a backyard mechanic, scraping by and trying to live the best i can.

chris_04_rx8

HENCE THE "YOUR ORIGINAL MOTOR" PART OF THINGS, I WANT ONLY THE MILEAGE OFF OF IT,

THO I UNDERSTAND WHAT YOU ARE SAYING < IT DOESNT MATTER TO THIS POLL, 143k on a few engines is virtually sickening, i would have stopped after the second, and prolly the 1st.

IF i knew for sure another engine would last 150k+ id through one in today, but since thats impossible she's dead to me

RIWWP

iTrader: (2)

This is the list of data points I collected:
Timestamp
Engine Response
Engine Configuration
Transmission
Engine Build Year
Engine Build Month
RX-8 Model Year
Chassis Mileage - Start
Chassis Mileage - End
Engine Builder
Engine End Cause
Primary Cause
Diagnosis Source
Climate
Cold Usage
Hot Usage
Shift Point - Stop and Go
Shift Point - Cruising
Shift Point - Track and Canyon
Shift Point - Casual
Driving% - Stop and Go
Driving% - Cruising
Driving% - Track and Canyon
Driving% - Casual
Typical MPG
Highest MPG
MPG Trend
Highest MPG
Owner Care
Oil Weight - Cold Temperatures
Oil Weight - Moderate Temperatures
Oil Weight - HotTemperatures
Synthetic vs Dino
Standard vs Diesel
Oil Change Interval
Oil Burn Rate
Oil Change Source
Oil Filter Replacement
Engine Break-in
Premix Usage
Premix Quantity
Cooling Modifications
Lubrication modifications
Power modifications
Other modifications
Engine Flooding
Catalytic Converter failure
Coil failure
Plug failure
Fuel pump failure
O2 Sensor failure
Thermostat failure
Water pump failure
Decarb
MSP-16

RIWWP

iTrader: (2)

Chris, read this for some food-for-thought: Audi, MINI Among Those with Highest Engine Failure Rates | AutoGuide.com News


Do a search for "Ford V6 engine failure" for something else to think about.

chris_04_rx8

good god mister technical , you went ;legit but with 100 out of the many thousands of owners its still not perfected,

AND CAN YOU CHANGE THE TITLE OF MY THREAD, REMOVE THE "8" AND PUT ORIGINAL ENGINE?

THANKS!!

RIWWP

iTrader: (2)

Changed.


NOW CAN YOU TURN OFF THE CAPS LOCK? WE DON'T LIKE BEING YELLED AT.

chris_04_rx8

oh believe me i am well aware of the rate of failure on many engines i have rebuild several piston motors and have witnessed a lot of destruction , i am pointing none out to be "the worst"

chris_04_rx8

i have a broken finger and it keeps hitting the caps lock when im typing LOL

I AM SORRY , ha i just had to that time


"well thanks a lot you son of a bitch"-harry soloman

^ anyone over the age of 20 should know this quote

RIWWP

iTrader: (2)

Chris, just so I'm clear. The problem we have with polls like this is that they tend to be more mis-informative than informative, but people like to take them as fact anyway.

A better set of polls would be:
- How many miles on the original engine before your cooling system failed and killed it
- How many miles on the original engine before your fuel pump failed and killed it
- How many miles on the original engine before your cat failed and killed it
- How many miles on the original engine before outside damage killed it
- How many miles on the original engine before it was replaced on misdiagnosis
- How many miles on the original engine before you killed it from negligence
- How many miles on the original engine before you killed it from doing something stupid
- How many miles on the original engine before you killed it from a bad set of modifications
- How many miles on the original engine before you killed it while racing

Unless the reasons for engine failure are split out, the results can't even point a finger in the correct direction


(My survey is 3 years old, I would have a different set of questions if I were to re-do it today, but I don't see enough value in taking that effort)

chris_04_rx8

and i find this data useless

because if say,

toyota made 1.5m engine and 500,000 failed its 33.3%

well audi made 200,000 engines and 50,000 failed then failure is 25%

but if you take the first 100,000 from both and they are like this

toyota, 50,000 failed out of first 100,000 then its 50%
and audi 10,000 failed out of first 100,000 then its 10%

and with new powerplants new cars and all coming out constantly, The lack of a better term, BUGS are prevalent in the first batch of the new powerplants and vehicles, many im thinking to much into that one but then again if a honda civic bursts into flames on the highway, its like eh , buy another honda,

BUT if a ferrari 458 italia does the same everyone in the world knows and its like OMG WTF HOW THE HELL< NOOOOOOOOOOOOOOOOO




but idk im just a backwood boy

chris_04_rx8

understood,

RIWWP

iTrader: (2)

You are correct on all points. The survey I linked is just as useless

It's the inherent problem when anyone takes multi-dimensional data points and tries to make a single dimensional conclusion from it.

Humans are far too complex for it to ever be truly meaningful.

Any proper study has to take every other possible factor and make them identical, where the only thing changing is the value that you are trying to measure.

For example, to get a true read on Renesis mileage, you would have to take a statistically significant number of engines that operated in the exact same rev and load range, turned the same revs, in the same ambient temperature/humidity/altitude, with the same oil, gas, and coolant source, the same maintenance schedule, same tune, the same sensors, the same exhaust flow, the same engine build measurements, ....


It's largely impossible. It is actually possible, but the financial cost would be astronomical and the benefit would be negligible.

9krpmrx8

iTrader: (46)

I accept the RX-8 and the rotary engine for what it is and I knew when I bought it years ago that rotaries are not the most reliable engines in the world. Sure, for the most part, people usually only come here originally when they have a problem but the facts are that engine failures have been a big part of the rotary legacy and the fact that a reman plant was built in the first place is proof of that despite the idiots who try and sugar coat it. The legacy of unreliable rotaries hat did not start with the RX-8 either. RX-7's had a high rate of failures and so did the REW remans from Mazda. So if you are purchasing a Rotary and expecting it to be a very reliable vehicle then you are a fool.

There are a few high mileage (120k +) original engine RX-8's but they are extremely rare. And sure you will have those success stories but they are rare, just like the stories in the Honda Civic world of premature engine failure. But getting 100k out of a Renesis is fairly common. But the facts are that Mazda has rebuilt thousands of Renesis engines and that is not good no matter how you look at it. But they did give an 8 year 100k warranty so we really have no room to bitch.

I don't feel sorry for people who buy 8-10 year old RX-8's and then bitch when they have problems. No model of car is free of issues at that age.

And while the Renesis may not be the most reliable engine, the RX-8 as whole seems to hold up pretty well.

Just look at this 10+ year old beauty

chris_04_rx8

right, \
my 92 f150 hits the mud often has 131k and runs like a champ.
my 94 mustang gt ran great all the way through 200k
traded it on a 2012 genesis coupe 2.0t rspec and drove the **** out of it to 30k with a larger turbo, exhaust, injectors, piggyback, ecu flash, etc etc. and never missed a beat, i usually tend to have decent luck with engines and cars but th rx8 lasted me 6 days, i have now bought a 3.8 firebird that seems to be crap, and my truck just isnt a daily driver.

RIWWP

iTrader: (2)

To be fair, your RX-8 has lasted at leas 8 years (or more, I forget the year).

The prior owner just dumped it 6 days before death, and you bought that result.