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Post by jabbasre5 on Oct 28, 2021 22:35:42 GMT -5
I hope that gives a bit of clarity on the subject at least with Mazda, I was actually blown away with how simple it is. And the leaded gas I actually used it in a 12a prep port engine I raced that’s a whole nother story for another time.
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Post by jabbasre5 on Oct 28, 2021 22:38:04 GMT -5
Lastly, and again I’m not trying to convince anyone. You do what you feel comfortable with. But like one poster mentioned above oils are MUCH different now then just 10 years ago, much less 45.
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Post by jabbasre5 on Oct 28, 2021 22:54:33 GMT -5
A few rotary-experts I know even advice against using 2-stroke oil because it burns rather quickly due to the higher temperatures inside the rotary engine. The result is not enough internal lubrification! My advise: stick with the "normal" oils ;-) Cheers, Michel But now this is something, I mean I have heard all kinds of crazy arguments this one must have come from some Rx7 “rotary” experts on the forums. Who ever came up with this has no clue about anything. Probably never owned a rotary and was trolling. I mean are we concerned about lubricating the exhaust or something? Every wonder why rotaries have such a Terrible reputation yet you know they are nothing of the sort? Enter your local “expert”. Again, I’m not trying to ruffle any feathers but come on use some common sense. Anyhow how do you “fix” the rotaries problems? Answer what problems? They are perfect;) |
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Post by rotoryguy on Oct 29, 2021 2:24:18 GMT -5
Love it! Thanks for your thoughtful responses. |
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Post by wayne on Oct 29, 2021 11:01:33 GMT -5
A few rotary-experts I know even advice against using 2-stroke oil because it burns rather quickly due to the higher temperatures inside the rotary engine. The result is not enough internal lubrification! My advise: stick with the "normal" oils ;-) Cheers, Michel But now this is something, I mean I have heard all kinds of crazy arguments this one must have come from some Rx7 “rotary” experts on the forums. Who ever came up with this has no clue about anything. Probably never owned a rotary and was trolling. I mean are we concerned about lubricating the exhaust or something? Every wonder why rotaries have such a Terrible reputation yet you know they are nothing of the sort? Enter your local “expert”. Again, I’m not trying to ruffle any feathers but come on use some common sense. Anyhow how do you “fix” the rotaries problems? Answer what problems? They are perfect;) JABBASRE5 that is harsh criticism and I feel undeserved. For a start, when Michel says "stick with the normal oils" he's saying stick with the oils that the Suzuki factory recommended. Secondly, he's a member with good hands on experience rebuilding rotary engines beyond the RE5. If you did stick with his "crazy argument", you won't go wrong. RE5's will run deep into 6 figure mileage on "normal oils". I'm happy for you to add your opinion and knowledge, but destructive criticism that's not backed up by a supported counter argument has no place here. Please continue to comment and share your knowledge but in a more balanced way. |
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Post by jabbasre5 on Oct 29, 2021 13:41:35 GMT -5
No that’s not what I meant I was talking about “experts” saying 2stroke oil not working since the engine produces higher egts. As for using sump oil I said it’s your choice it works but claiming that 2 stroke won’t because of higher egts of rotaries is just nonsense. Hopefully that clarifies. Again, you do you, it just annoys the hellout of me when people claim to be experts on things and make totally inaccurate claims. Ie michael thought this guy knew something because he was an “expert”. So Michael does something based on his recommendation.
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Post by wayne on Oct 29, 2021 17:19:40 GMT -5
Thanks for the clarification JABBA, I see what you saw as the problem and it wasn't Michel.
While I stand by the default position "if you don't know enough, then stick with the factory recommendation", I've recently decided to go with a 2 stroke oil after a long talk with Castrol Tech. One of our members noted advantages such as the oil is intended to become an aerosol and to be burned. If 2 stroke oil can't cope with the combustion temps of a rotary, why would a sump oil be any better?
So ears and eyes open.........
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Post by typ110 on Oct 30, 2021 0:09:44 GMT -5
JABBA,
First of all, no offence taken but let me explain how I got this advice: My father bought his first rotary (NSU Ro80) back in the early eighties. Soon to be followed by almost everything else that had a rotary in it (even a chainsaw ;-)). I joined his love for these engines in the early 90ties (We did build quite a few engines together which was really fun).
Since there was almost nobody around at the time (especially in a small country like Belgium) he gradually learnt a lot on Wankelengines by own experience AND with talking/working together with real experts that where already rebuilding and improving NSU rotary's in the seventies. I had the opportunity to witness all of this and also had long talks with some of them. So in time I did my bit of experienting concerning the 'oil' thing during the last 30 years. I did conversions on oilinjection pumps in order to use other oils then the original sump oil. I converted Ro80's to GPL and so on. GPL is in fact the best conversion you can do on a rotary but that is another story. Needless to say it all worked but I did not see any improvement on changing to 2-stroke oil in comparison with a good quality semi-synthetic engine oil.
But here is the catch: we all know rotarys run a lot highter in temp then a 4-stroke or 2-stroke engine. 2-stroke oil is designed to burn at around 200°F in comparison with modern engine oils that have a flash point of around 400°F. This means that when using 2-stroke oil the chambre during combustion in our rotary-engine COULD not get enough lubrication and therefore can cause early wear. You will not see this wear in years or will probably never see it due to the low milage we put on our rotarys nowadays. Let's be clear: I am not against using other types of oils, I was just trying to share my 30+ years of experience with rotary-engines. I therefore weigh my words when saying 'could' because of the many discussions about this theme ;-)
I still remember what a leading German expert said to me years ago: do not change something that worked for over decades and stick with the proven: it works....
Again: I could be wrong but I am just trying to share experience.
Cheers,
Michel
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