Well it seems a few posts have been deleted somehow. I'll go ahead and answer it again. The rotary engine does displace 1.3 and 2.0 liters but the rotary is more effecient than a piston engine. One cycle in a rotary engine is equal to 2 in a piston engine. An easy way to think of it is this. A 6 cylinder piston engine will fire 3 cylinders at a time. So in theory its only using half of its displacement at a time. A rotary would be like fireing all 6 cylinders at once. So a 1.3 liter rotary will flow as much fuel and air as a 2.6 liter piston engine. Thats why people think a 1.3 liter engine would be good with fuel economy but it isnt. Same goes with a 2.0 liter rotary. Its flowing as much as a 4.0 liter piston engine would on one cycle.

 

I'm by no means a pro, and yes rotary's do flow roughly twice their displacement just inefficiently. You need lots of fuel to cool the chamber and the burn is not as thorough as a piston engine. There are quite a few 2.0 and 2.6 liter engines that have dynoed between 675rwhp- 785rwhp for the 2 liter and up to 1040rwhp for the 2.6 on C-16. The highest dyno I've heard of for a 13b was 660rwhp. Their must be inefficiencies there? Any more knowledgable people have any input.

 

I believe the silver Probe was driven by Wayne Sanders of GB and it was a Cosworth 4 banger......I think he switched to a Focus as well.....There is also a VW Golf Tube frame car w/ Audi 5 cylinder 20v turbo quattro that ran a 6 too.....

my .02

 

oooooops, I was wrong about the VW running 6's...It runs mid 8's.......Sorry

 

both wayne saunders' probe and focus only ran mid to high 7's.

 

7's only huh? okay, cool I learned something today

I would love to see a rotary or 4 cylinder run a 6......

thanks for the update.....so has anyone ran a 6 in a 4 or rotary??

 

Wayne Saunders was and STILL IS the man!
The US was SOO far behing in 'sport compact racing' back in the day, not only were the cars from PR kicking our asses, but Ben had that silver probe in the sevens like a week after Sakura ran the first 7 for an import!

BTW, Wayne's focus is the AEBS focus that Ben Ma now ownes.
Wayne sold it to him because it had handling 'issues'

the AEBS guys crashed it twice and flipped it once.

wayne was rumored to be building a longer wheelbase/lower roof Focus sedan bodied car, but i have yet to see pics or hear any other news of it....

 

anyone who thinks a 1.3L rotary is actually 2.6L dosn't know what theyre talking about.

 

Its like saying a 250cc 2-stroke is actually a 500cc just because it fires twice as often as a four stroke. This is 1 reason why the rx-8 has highest specific output of any N/A production car engine ( 196 hp/litre ).

 

Here newbie readup first before opening your mouth.

https://www.rx7club.com/forum/showth...6+liter+rotary

 

Well considering the rotary is a 4 stroke engine no. Thats not what Im saying.

 

That is absolutely _the_ most ignorant thing i've ever heard on these boards.

Delta rotary already explained it, but I'll try to make it a little more comprehensive.

In a piston engine, there is one power (combustion) stroke per cylinder for every TWO rotations of the crankshaft. In a rotary, there is one power stroke for every ONE rotation of the eccentric shaft (equivalent to crankshaft). By definition, the 13B is 1.3 liters. By function, it is comparable to a 2.6 liter piston engine. Just think of it as a kind of gear reduction before the transmission (1:1 as opposed to .5:1)

Hope that helped.

 

japanese drag strips are 400 meters, which ends up being like 25 feet or something short of a quarter mile

 

700+ was seen on the Scoot FD with a rather stock looking 13B ( there is a video on the net ... look it up in KaZaA

 

Well i guess a 2.6L 13B is quite comparable with the 2.5L Sentra engine ( both are around 160hp ) ..... but that was almost 20 years ago.

Can't wait to see the reactions from peopel of the RX-8 ( specialy the Mazdaspeed edition of the NA 13B-RENESIS )