I don't mean the pressure in the system, I'm referring to crankcase pressure. In piston engines, its extremley important to have enoughe oil, but not to little, and not to much becuase the crankcase and pistons are extremley sensitve to the amount of air that is in the crankcase while running.

I saw a picture of an rx7 with the oil pan removed, and there was nothing really in there except just an oil siphon with a grill.

I understand how the rotary pretty much works, but what im asking is if you fill the oil up too much, it doesnt matter, I mean theres no pressure down there, so who gives a **** right? I mean dont fill it right up the rim, but going just above the dipstick doesnt matter right?

Also, what exactly does the oil pressure gauge on the dash report, does it report the pressure in the lines of the oil system?

Is there a website that could tell me EXACTLY how a rotary works, specifically in the rx7? like the basic fundamentals, how exactly the ignition makes a rotar spin.
And why are they so toxic to the environment? I mean just like a piston engine, it burns ******* gas, why are there so many environmental issues with the wankel?

This would be nice to clear up all the grey areas that I have about the rotary. These engines are absolutley amazing, I honestly do not think that I will ever get something other than an RX7 in the next long long time.

Im not expecting someone to answer everything I posted, just to point me in the right direction

thank you for your time.

 

www.howstuffworks.com

 

thx, read the whole thing.

I still don't understand why they are shitty for emissions.. Maybe becuase it has a much larger combustion area than a standard engine? not to sure...

 

poor control of blowby gases.

 

isn't blowby when the rings fail on a piston engine and the burning gases escape into the crankcase, wich in turn go up into the valve covers via the valve seals...

I have no idea how blowby relates to the rotary tho..

 

The perepheral exhaust port.

It allows the biult up unburned gassess near the apex seals to be pushed right out of the chamber.

 

I am not sure I understand what you are saying but the rotary has blow-by like everybody else .. that's why there is a purge valve, kinda like a PCV valve.

http://www.geocities.com/huguesdc1/evapcrank.html

An interesting tidbit:

back in the days when the emissions laws first came out (around 72 and to be applied in 75), auto manufacturers thought the rotary was the answer, that's why they all try to get licenses for it. They loved the fact the NOX were low and they assumed they could get rid of the HC-CO easily with thermal reactor. Then, I don't remember what happened but I am sure someone here knows more than I do.

hugues-