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apex seals Q.

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Old 05-27-2006 | 04:04 AM
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apex seals Q.

hey guy~!

Do you guys know how easily apex seals breaks down on RX-8??
heard that RX7 had to rebuilt the engine every 80,000Km/h
and
RX8 has to rebuilt the engine when it gets to around 120,000Km/h..
this sentence i heard from technician
My friend is getting 04' RX8 soon but since he heard that .. you know..
i'm so curious too~!
is it TRUE of FALSE
Old 05-27-2006 | 04:12 AM
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Originally Posted by leesang
hey guy~!

Do you guys know how easily apex seals breaks down on RX-8??
heard that RX7 had to rebuilt the engine every 80,000Km/h
and
RX8 has to rebuilt the engine when it gets to around 120,000Km/h..
this sentence i heard from technician
My friend is getting 04' RX8 soon but since he heard that .. you know..
i'm so curious too~!
is it TRUE of FALSE
No, 300,000 km/s, at least in a vacuum.
Old 05-27-2006 | 04:16 AM
  #3  
Crazy Rx-8 Driver's Avatar
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umm rumors are rumors until proven true or false right?


tell your friend to research up the engine design of the Rx-7 compared to the Rx-8... to your suprise one is FI and the other is N/A . ;p and then compare the old Rx-7s that were N/a to the Rx-8 and see how many miles the old N/A rX-7s were known to accumulate compared tot he FI Rx-7s.

I've seen some rotory motors reach 200K+ Miles! so to answer your question... tell your friend to buy one, keep up to date with daily maintainance, drive it untill the motor blows up.. and then post and let us know how many miles he accumulated. :p
Old 05-27-2006 | 04:34 AM
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Originally Posted by Raptor2k
No, 300,000 km/s, at least in a vacuum.
It's actually 1,079,252,848.8 km/h, but if you change the oil more regularly you may be able to extend it a bit.
Old 05-27-2006 | 05:08 AM
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apex seal rumors make the baby jesus cry.
Old 05-27-2006 | 05:23 AM
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I put 140,000 miles (225,000 km) on my 1983 RX-7 before I sold it and it was still running strong.
Old 05-27-2006 | 06:58 AM
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my friend said his neigbor's dog can talk

my other friend said Jesus was actually chinese, his name is Jesus Hong (Family guy)

my mom's cousin's mom's sister's daughter's son's cousin's friend said Im actually God.
Old 05-27-2006 | 09:57 AM
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I had a 88 RX-7 GXL(non-turbo) that had a bit over 100,000 miles when I sold it. The engine was in fantastic shape.
Old 05-27-2006 | 12:52 PM
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Wink

Originally Posted by Stavesacre21
apex seal rumors make the baby jesus cry.
Old 05-28-2006 | 02:57 AM
  #10  
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Originally Posted by DOMINION
I'm not really sure what to make of that...

but ok
Old 05-28-2006 | 03:05 AM
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Originally Posted by Stavesacre21
I'm not really sure what to make of that...

but ok
I think that's Mary and Jesus doing it, just a guess though
Old 05-28-2006 | 03:12 AM
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ok,
i hate to tell this,

but i was mixing a cocktail in the back of my car.... it was in a cocktail zone..... and we had flags up....

some weird sound, / vibe.... blew my apex seal..... i swear... my sisters brothers mother is a master tech with kia.... he heard it and ran over from the next park.

beers
Old 05-28-2006 | 04:23 AM
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Just get the 8 if you want it so badly... sheesh... my friend blaa... blaa...
Old 05-28-2006 | 10:12 AM
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Originally Posted by leesang
hey guy~!
120,000Km/h..
im curious as how you manage to get your car going 120 000 km/h.. lol..
Originally Posted by Ike
I think that's Mary and Jesus doing it, just a guess though
WAY TO RUIN THE BOOK/MOVIE!
Old 05-28-2006 | 11:12 AM
  #15  
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Seals live around 30 years, walrus's on the other hand live much longer so I would get the optional walrus package.
Old 05-28-2006 | 12:58 PM
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Basically we've all been duped and at exactly 120,000km our apex seals will suddenly melt because your friend the technician, who, let me guess, has never worked on a rotary engine said so...ok.

See how silly it sounds now? If not, go post a MPG, or flooding post none of those have been discussed either. Like most cars if taken care of this car should have an average reliability in comparison to other cars made today.
Old 05-29-2006 | 01:23 PM
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wake up
Old 05-29-2006 | 02:03 PM
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Originally Posted by leesang
hey guy~!

Do you guys know how easily apex seals breaks down on RX-8??
heard that RX7 had to rebuilt the engine every 80,000Km/h
and
RX8 has to rebuilt the engine when it gets to around 120,000Km/h..
this sentence i heard from technician
My friend is getting 04' RX8 soon but since he heard that .. you know..
i'm so curious too~!
is it TRUE of FALSE
OK I know we are being a little harsh on you but that doesn't change the fact that the technician you spoke to is a complete moron who shouldn't be allowed to boil water without a permit. Tell him RG said so! He obviously has no clue as to why rotary engines have gone south in the past.

The 3rd gen RX-7 suffered from poor cooling. This combined with a change in the water seal material from the previous RX-7 caused the rubber seals to leak over time right around the spark plug holes. the heat did them in. This caused a water leak which at the very least needed to be fixed by opening the engine up. Many 3rd gen owners have also modded their cars without knowing how and why things work the way they do and have been personally responsible for their engine's demise. Mazda did offer stainless steel water o-ring shields on it's remanufactured motors and through the aftermarket as a fix to the o-ring issue. It still didn't address the poor cooling of that car. That was a car design flaw and not an engine one. None of these are apex seal problems. Only human error seems to contribute to that.

The RX-8 has had a few engine failures. Some have been from poorly tuned and designed turbo kits which is no fault of the engine. Othes have failed from oil related issues that again go back to cooling. Once again not an apex seal issue. I'm sure you'll have a couple of legitimate failures here and there but show me an engine that doesn't.

There have been many rotaries that have hit the quarter of a million mile mark. The rotary is not an inherently unreliable device. Quite the opposite is actually true. Many rotary owners are inherently unreliable though and that is the source of many problems.
Old 05-29-2006 | 04:03 PM
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Originally Posted by rotarygod
The 3rd gen RX-7 suffered from poor cooling. This combined with a change in the water seal material from the previous RX-7 caused the rubber seals to leak over time right around the spark plug holes. the heat did them in. This caused a water leak which at the very least needed to be fixed by opening the engine up. Many 3rd gen owners have also modded their cars without knowing how and why things work the way they do and have been personally responsible for their engine's demise. Mazda did offer stainless steel water o-ring shields on it's remanufactured motors and through the aftermarket as a fix to the o-ring issue. It still didn't address the poor cooling of that car. That was a car design flaw and not an engine one. None of these are apex seal problems. Only human error seems to contribute to that.

The RX-8 has had a few engine failures. Some have been from poorly tuned and designed turbo kits which is no fault of the engine. Othes have failed from oil related issues that again go back to cooling. Once again not an apex seal issue. I'm sure you'll have a couple of legitimate failures here and there but show me an engine that doesn't.

There have been many rotaries that have hit the quarter of a million mile mark. The rotary is not an inherently unreliable device. Quite the opposite is actually true. Many rotary owners are inherently unreliable though and that is the source of many problems.
Yea...what he said.
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