Maxthe7man

I found this blurp on rotary engines on the Link ems homepage... It was just so true I thought I would post it....Max

Mazda Rotary Engines Link has provided many systems for the 12a 13b and 20b Mazda Rotary engine. Currently we choose not to supply systems for these applications for three reasons. Firstly the rotary engine will not survive incorrect tuning particularly ignition. In a conventional (piston) engine as you get closer to the optimal tune the engine responds accordingly, performing better as the tune progresses. Feedback when tuning a rotary is harder to interpret for the tuner. Worst case the engine makes full power when under fuelled or over advanced and detonates. This is not a problem with conventional engines due to the feedback you get as a tuner. The result is a very unhappy customer even though it was out of our control. Secondly, the rotary market is full of "back yarders" and DIY's forwarding themselves as "experts". While there are some very competent, qualified rotary engine builders in the market they are the exception. Thirdly most rotary customers don't want to do the whole job properly either due to a lack of dollars or attitude. For these reasons we have been happy to let other suppliers struggle with this relatively small market. We do supply systems to selected dealers who are very happy with the results that they get but in general we don't promote the systems. I have to finish by saying that the Mazda rotary engine is absolutely fantastic when properly set up and installed and I hope that they keep producing them as they provide interest and variety in an increasingly homogenous market. When I see a good rotary application I appreciate that they are one of the finest power plants available. Currently we are not looking to openly distribute engine management systems for rotary engines because we choose not to.

FC Alex

I think that's the best way I've heard of anyone explaining rotary tuning and community. I'm so glad it wasn't one of those Rotary are pieces of sh*t and that's we don't tune them thread, or they're too fragile. Whether some on this board admit it or not, I believe that these motors are fragile but have great potential. So after living and learning in the rotary after time you will soon begin to learn how mod and tune them correctly. And forums such as this one usually helps, reason I say usually is because sometimes you have schmucks that give out wrong info to newbies... But generally speaking I think people can learn a lot from forums. That's my .02 on that.

Alex

88IntegraLS

So what is a general guildeline? 12:1 airfuel ratio or lower when over 10psi, intake temps < 150, timing retarded ~3* for every psi boost?

Since u can't tune the rotary by feedback, it's all dead reckoning with empirical data, but I can't find any tuning benchmarks for rotaries because no one wants to give out their secrets! It appears that you have to blow a rotary or two while tuning to know where the threshold of detonation is.