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Renisis durability

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Old 02-10-2006 | 05:47 AM
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Renisis durability

most ppl says rottary engines has shorter life than regular engine.....is it true?and how can i keep rottary engine last longer..??
Old 02-10-2006 | 06:12 AM
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Originally Posted by Niaz
most ppl says rottary engines has shorter life than regular engine.....is it true?and how can i keep rottary engine last longer..??
No, perform routine maintenance like any car.
Old 02-10-2006 | 06:13 AM
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Originally Posted by Niaz
most ppl says rottary engines has shorter life than regular engine.....is it true?and how can i keep rottary engine last longer..??
PS: MOST people do NOT say this.
Old 02-10-2006 | 07:12 AM
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I havn't had an issue regarding the motor ,so as long as its maintained, you should get the durability your concerned about. You might want search and check in on some alternate motor and gear lubricants that others here are using. I myself use Royal purple , other quality lubes are also used by others . Glad to have you onboard the forum, Later............
Old 02-10-2006 | 07:22 AM
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Look at what you see on the roads. There are many old RX7s running about; some may have been rebuilt, but there are some really old ones still going strong. My ex-neighbor has a 94 RX7 that he has used as a daily driver since he bought it and has never rebuilt it. I don't know the exact mileage, but I'm guessing high 100K.

A lot of the 8's are now approaching 50K on here. I've seen some piston engines from certain US manufacturers have a lot of troubles by 50K.
Old 02-10-2006 | 07:34 AM
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Originally Posted by Niaz
most ppl says rottary engines has shorter life than regular engine.....is it true?and how can i keep rottary engine last longer..??
yes it's completely true - at 20000 miles the engine just falls apart by design.
Old 02-10-2006 | 08:32 AM
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86 rx7 168,000 miles never rebuilt alot of mods runs like brand new, just pamper the hell out of it.
Old 02-10-2006 | 08:40 AM
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There is nothing you can do, the ecu is designed to automatically destroy the motor at 50001 miles so you are out of warranty and have to buy a new one.....

Do I even have to say I am kidding?
Old 02-10-2006 | 08:48 AM
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I believe the 3rd gen Rx7 motor gave rotaries a bad name. If you got to 100k miles you were lucky. Many died by 85-90k. Its not at all a result of the rotary engine though. It was the twin turbos positioned in a way that they basically cooked the engine. Then combine that with an inadequate cooling system to begin with, and a very tight engine bay that restricted air flow, and you have a recipe for disaster. No other generations of rotaries suffered from such premature death. The problem is the 3rd gen was the most popular model, and is what most people associate with the rotary.
Old 02-10-2006 | 08:52 AM
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Right, the 3rd Gen is what most people now think of when they think of Mazda Rotary. Wonderful car; bad execution.
Old 02-10-2006 | 09:12 AM
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no expensive timing belt servicing as well. Just change the oil and liquids regularly. NA Renesis is actually more reliable than the twin turbos. Just what mazda tells us and what everyone with high mileage in their 8 has praised over and over again.
Old 02-10-2006 | 09:20 AM
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Originally Posted by Niaz
most ppl says rottary engines has shorter life than regular engine.....is it true?and how can i keep rottary engine last longer..??


How many people that have experience with rotary engines did you actually discuss this with?

My FC RX-7 lasted 260+ miles with little or no maintenance.
Old 02-10-2006 | 10:02 AM
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^^^ none. that's what all the people on the [insert non-rotary powered car here] forum said.
Old 02-10-2006 | 10:06 AM
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If you put supercooled cream in your car, it will run super smooth and forever!
You can only put this special cream in rotary engines!
Otherwise, at 50001 miles, rotary engine wont rev anymore
Old 02-10-2006 | 10:17 AM
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since the rotary has way fewer moving parts its much more reliable and consequently longer lasting. Take a look at this project, where people are developing a rotary engine to an aircraft. And the certification of a new engine on an aircraft is way more stringent than for cars. There have to be time tests, engine run over a long time at 115% of redline etc and other things I dont know about.

http://www.mistral-engines.com/index.htm

Bodi
Old 02-10-2006 | 10:49 AM
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Originally Posted by Niaz
most ppl says rottary engines has shorter life than regular engine.....is it true?and how can i keep rottary engine last longer..??
I believe your "most ppl" are not in the know.
Old 02-10-2006 | 01:04 PM
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how about redlining da rotary engine frequently.....specially da rx-8 type s.....is it safe???
Old 02-10-2006 | 01:13 PM
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Originally Posted by Chrisbert
Right, the 3rd Gen is what most people now think of when they think of Mazda Rotary. Wonderful car; bad execution.
Don't forget the Gen 1 rotary. I remember the common lament that it was a great engine "until the seals go." Technology finally put that problem to bed. With only three moving parts and no reciprocating motion, I expect mine to last a long time.

Oh, and Niaz, redline it whenever you want. Just be aware that your running a lot of high dollar fuel through it.
Old 02-10-2006 | 01:16 PM
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um.. you do know that the Renesis in the RX-8 won some sort of crazy endurance award, right? some sort of ***** out track run for over so many hours or something.. guys help me out here.. lol.
Old 02-10-2006 | 01:29 PM
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Originally Posted by Niaz
how about redlining da rotary engine frequently.....specially da rx-8 type s.....is it safe???
It is safe if you mean accelerate to redline and then shift. It would not be good to accelerate to redline and then drive around town at 9k rpms for extended periods of time.
Old 02-10-2006 | 01:32 PM
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Originally Posted by RX-Nut
um.. you do know that the Renesis in the RX-8 won some sort of crazy endurance award, right? some sort of ***** out track run for over so many hours or something.. guys help me out here.. lol.
yeah, in 2004 they drove a stock rx8 at full throttle for 24 hours. setting all sorts of records and even eclipsing a record held by none other than... the 787B.

help me out here, i'm sure the link is lurking somehwere.
Old 02-10-2006 | 01:41 PM
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Originally Posted by NoTears316
PS: MOST people do NOT say this.

the one's with the same spelling/communication skills probably do ...
Old 02-10-2006 | 01:44 PM
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Originally Posted by Animagix
yeah, in 2004 they drove a stock rx8 at full throttle for 24 hours. setting all sorts of records and even eclipsing a record held by none other than... the 787B.

help me out here, i'm sure the link is lurking somehwere.

It was the Leman's race. Actually, I read that the rotary was banned from this race for a long time because it was deemed unfair to reciprocating engines. The rotary was killing the competition.
Old 02-10-2006 | 02:10 PM
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Originally Posted by rkostolni
It was the Leman's race. Actually, I read that the rotary was banned from this race for a long time because it was deemed unfair to reciprocating engines. The rotary was killing the competition.
nope. not leman (there are no stock rx8s in the lemans series). i believe he is referring to this:

Originally Posted by c2k4-8
Mazda RX-8 Sets New Benchmark for Rotary Endurance

From www.edmunds.com
Date Posted 10-03-2005

PAPENBURG, Germany — Mazda's RX-8 coupe has set 40 international speed and endurance records for rotary-engine cars at a German test track.

The records were set during a 24-hour period on the 12.3-kilometer oval at the automotive proving grounds in Papenburg with two 231-horsepower Mazda RX-8s. Twenty records were set in the Fédération Internationale de l'Automobile (FIA) Category A (special vehicles) and 20 in the FIA Category B (mass-production vehicles). The two sports cars, one in racing trim and one a standard production vehicle, covered more than 3,000 miles during the record attempt, which has been certified by the FIA.

The RX-8s averaged 132.25 mph (production) and 134.18 mph (race trim) over the 24-hour endurance trial. Both vehicles shattered a record previously held by the 700-horsepower Mazda 787B racecar, which won the 24 Hours of Le Mans race at an average speed of 127.46 mph in 1991.

What this means to you: Mazda has persevered with the rotary engine concept — and exercises such as this prove reliability problems are a thing of the past.
https://www.rx8club.com/showthread.p...ight=endurance

Last edited by Glyphon; 02-10-2006 at 02:16 PM.
Old 02-10-2006 | 02:23 PM
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^^ thanks glyph


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