4door-r

Im IN AN AUTO SCHOOL an discussing rotarys.can someone post the pros/cons of rotary.why is it so good for performance. thanks

nevarmore

No. Do your own homework.

Read the FAQ's at the top of every page in the generation specific section. Check out howstuffworks.com and search for rotary engine, watch and learn.

BDentonFC

There's plenty of info all over this site to critique a rotary engine-despite whether it is pro or con. There's so much more than just a single thread can tell you about rotary engines....If you are really interested in the power of the rotary engine, delve deeper. Personally, I am a Mech. Engineering major and what drew me towards the 7 was the complexity yet simplicity of the method to it's madness. Experience it for yourself and you might truly be enlightened by the power of the rotor.

Sponge Bob Square Pants

www.howstuffworks.com
www.rotaryengineillustrated.com
https://www.rx7club.com/search.php

Project84

4door-r

thanks for all the help. you guys answered all my question completely. i was looking for a few knowledgable people to help me out.i did some research but still haven't found what i need. do you guys not like to share info or what.

nevarmore

People are more willing to help you if you demonstrate a willingness to help yourself. You said you did some research, tell us what you found. What do you already know about the rotary?

One of the basic design bonuses of a rotary is that it makes its power by spinning. When you just have one kind of motion (turning, reciprocating, etc) you don't lose power when you change to another kind of motion. A piston engine has to change a back-and-forth motion into a rotating motion, that change in motion robs power. A rotary is already spinning, you don't lose power changing its motion.

A rotary engine will usually rev faster than a piston engine. The rotating mass of a rotary is along the center, not hanging out 3" from the crank and changing direction like with a rotating assembly from a piston engine. Roughly, its inherently balanced.

Rotaries lose out to piston engines because its easier to get the full force of the combustion to shove a piston down than to get it to roll a rotor. This is why rotaries aren't known for thier massive tourqe numbers.

4door-r

thank you,finally. what do you need to do maintence wise to keep it running strong and reliable?is there any part you have to pay extra attention too?

4door-r

thank you,finally. what do you need to do maintence wise to keep it running strong and reliable?is there any part you have to pay extra attention too?

4door-r

thank you,finally. what do you need to do maintence wise to keep it running strong and reliable?is there any part you have to pay extra attention too?

nevarmore

You need to check the oil at every fill up. A piston engine gets most of its rotating mass lubrcated by simply sloshing around in oil in the pan. The rotary has to drip a little bit of oil into the chamber to keep the seals sliding along the outside of the housing.

Apex seals are a notorious part, but thats mostly a misunderstanding and a myth. Apex are akin to piston rings, they seal the chamber. They fail sooner if they are not kept lubricated or if the engine is run beyond its design without updating the seals. If you run an assload of boost on a regular engine, itll start blowing seals. If you run an assload of boost on a rotary, itll start blowing seals.

A rotary seems to have more seals and is less tolerant of seal failure. Go find a picture of a rebuild kit, there are a lot of thin seals and o-rings. There are seals everywhere on a rotarty, between each rotor and the chamber walls, between each housing, and between the eccentric shaft and the housings.

Heat kills rotaries. They rely more on the oiling system to provide part of the cooling and are more sensitive to parts that warp when they overheat.

What specific class are you doing this for? Is this an informal BS session or a formal report? Which auto school are you in?

4door-r

im in school a wyotech in pa. its for a presentation in coomunication class in the business class. this is my last class.i took automotive,chassis fab. and high performance engines - rotary. the only mazda here has a 383 in it.

whats the lowest octane gas you can run to run 23 psi an up. how are newer rx7s rear end gearing? can you get diiferent ones. whats the top 3 rotary motors. can you get a lot of jdm. stuff here. any power n/a in a rotary? info about injector size on a rotary? spark?

thank again for the help.

nevarmore

Thats all basic statistical stuff. Check some peoples homepages or do a search.

Sponge Bob Square Pants

You should drop out of auto school and enter a grade 9 grammar class

4door-r

whats up with the square pants avatar are you 5. you must be very mature too. and well educated.

Sponge Bob Square Pants

Sorry to offend you with my forum username and avatar 4door-r, you are the bigger man as you have just proven. I also think that it was very logical of you to judge my education based on those things. Have a great day!