Rotary and Reliability: Same Sentence?
#26
We are what we think
If you have a cat, and take care of it like a dog, it will die. Vise versa.
People buy roataries and treat them like piston engines, ergo, they don't do very well.
People buy roataries and treat them like piston engines, ergo, they don't do very well.
#27
Piston Eater
Anyone have an idea or any experiences with a bad idle like this? i took the UIM off and looked over all the lines in the rats nest and they look fine, intakes look clean too. Could it be in the Y-pipe or the turbos?? I dont know where else to cheak for something loose
#28
Sharp Claws
iTrader: (30)
Anyone have an idea or any experiences with a bad idle like this? i took the UIM off and looked over all the lines in the rats nest and they look fine, intakes look clean too. Could it be in the Y-pipe or the turbos?? I dont know where else to cheak for something loose
#29
Rebuild For The Rebirth
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Like a few people have mentioned, cheap parts will render cheap build. Also depending on how you maintain the engine it will reward you back by running well
#30
Piston Eater
something else? it just happened when i boosted for the first time that high
#32
Moderator
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i did overheat one, but that was special situation where i let anger rule the day instead of common sense. again, my fault, not the engine. i've always been pretty meticulous about maintenance.
on the flip-side i have had a few 150,000+ 12As, so i've lived on both ends of the longevity spectrum in my 25 years of rotaries.
#33
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as a mechanic i couldnt wait to get my hands on a rotary the promise of a new challenge was so tempting i love it every time one comes in and now i own one reliability is all in the quality and skill of the builder
#34
Senior Member
I get soO sick ANNNNNND tired of people saying rotaries aren't reliable!!! The FACTS are rotary powered rx-7's have more race WINS than ANY other car!! (and rotary powered race cars in general!!) The Rx-3's absolutely ENDED Skyline ("Gojira"!) domination in racing back-in-the-day. Rx-8's are currently dominating in 24hr races.... people seem to OVER-look the fact that u DON'T win races w/o RELIABLE engines/cars!!!!! Talk to/read about people who have raced in spec7 series & never needing to do a rebuild for a WHOLE race season or MORE! BMI Racing's 4 rotor did 18 months of competition WITHOUT ONE SINGLE ENGINE ISSUE!!!! They only took it apart just to see how it was wearing and guess what?! It was perfectly fine NO ISSUES!!!
Star Mazda Championship presented by Goodyear
Star Mazda Championship presented by Goodyear
#36
I get soO sick ANNNNNND tired of people saying rotaries aren't reliable!!! The FACTS are rotary powered rx-7's have more race WINS than ANY other car!! (and rotary powered race cars in general!!) The Rx-3's absolutely ENDED Skyline ("Gojira"!) domination in racing back-in-the-day. Rx-8's are currently dominating in 24hr races.... people seem to OVER-look the fact that u DON'T win races w/o RELIABLE engines/cars!!!!! Talk to/read about people who have raced in spec7 series & never needing to do a rebuild for a WHOLE race season or MORE! BMI Racing's 4 rotor did 18 months of competition WITHOUT ONE SINGLE ENGINE ISSUE!!!! They only took it apart just to see how it was wearing and guess what?! It was perfectly fine NO ISSUES!!!
Star Mazda Championship presented by Goodyear
Star Mazda Championship presented by Goodyear
#37
I get soO sick ANNNNNND tired of people saying rotaries aren't reliable!!! The FACTS are rotary powered rx-7's have more race WINS than ANY other car!! (and rotary powered race cars in general!!) The Rx-3's absolutely ENDED Skyline ("Gojira"!) domination in racing back-in-the-day. Rx-8's are currently dominating in 24hr races.... people seem to OVER-look the fact that u DON'T win races w/o RELIABLE engines/cars!!!!! Talk to/read about people who have raced in spec7 series & never needing to do a rebuild for a WHOLE race season or MORE! BMI Racing's 4 rotor did 18 months of competition WITHOUT ONE SINGLE ENGINE ISSUE!!!! They only took it apart just to see how it was wearing and guess what?! It was perfectly fine NO ISSUES!!!
Star Mazda Championship presented by Goodyear
Star Mazda Championship presented by Goodyear
#38
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Anyone have an idea or any experiences with a bad idle like this? i took the UIM off and looked over all the lines in the rats nest and they look fine, intakes look clean too. Could it be in the Y-pipe or the turbos?? I dont know where else to cheak for something loose
1993 Rx7 efini vacuum leak - YouTube
1993 Rx7 efini vacuum leak - YouTube
#40
#41
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ive seen plenty of people with even 2jz's, a toyota motor, and blow them right out of the box, hell ive even seen brand new jeep wrangler motors die after 50,000 miles(critical engine failure), on the other hand, ive seen rotarys just built and then explode on the dyno, never even got to drive on the road! but you know what, i have a 162000mi fc and that thing still runs strong and is my daily driver. its all in the knowledge of how it works, how to fix, and how to tune that makes up a motors reliablity, rotary or piston.
#42
Lives on the Forum
Understanding of the rotary is a big step toward long life. It's the only engine that you can take to the redline on a daily basis without feeling guilty. They are race engines, and if you baby them they tend to die young...
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#45
Engine, Not Motor
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The first video is engine removal. While it is an RX-5 Cosmo, an car that few will ever see let alone work on, the process will give you the general idea of an engine removal. Steps are similar for most rotary vehicles, it's the details that differ.
The next video is engine disassembly and some cleaning. This is an old carbureted 13B so the accessories bolted to the engine are different than newer engines. However the process of externally disassembling any rotary is about the same. Covered here is also flywheel removal (same for any rotary) and engine parts cleaning.
Cleaning of all engine parts continues in this video. Provided here are examples of how this is accomplished with a minimum of tools and supplies. It's a lot of labor to clean old parts until they are looking new again. At the same time, parts should be inspected.
Finally, here is the engine assembly. This video includes clearancing side seals, assembling all the seals onto the rotor, then assembling all the parts into a 13B short block.
No, neither. 3MM seals are used when 2MM rotors are worn past the point of being usable. The grooves are milled out, and 3MM seals are installed. Actually, due to slightly worse sealing, the 3MM seals actually perform marginally worse than 2MM. And they aren't appreciably stronger.
#46
1990 Mazda RX-7 GXL Turbo
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My experience.. rotary projects are reliable when kept within the limits to which they are designed and tuned, to a point, and when all components are addressed like cooling, fuel, etc. However, rotaries do not respond well to adverse conditions to which they are not prepared for. You don't often get second chances with rotaries when conditions are not ideal, as compared to some other engines. I love rotaries! But they need attention to detail and control.
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