We have a supercharged first gen with a 13B in it around these parts...

It is a tourqy little bugger in the lower RPM, doesn't feel like a rotary anymore...but its sweet!@

 

not really, cause engines can only make torque. your numbers are reversed btb. we'll pretend your engine always makes 100 lbs-ft, like an electric motor

at 2626 you're making 50hp
at 5252 you're making 100hp
at 10504 you're making 200hp

this is why the renesis is so cool, because you can advertise 250hp, like a decent V6 would make, but the v6 would probably make it 2-3K rpm sooner, you just kinda neglect to mention that.

and remember, you buy horsepower but drive torque!

 

But wait - there's more --
Almost all piston engines make that big torque in a comparatively narrow 3K to 4K RPM band, then it falls off.
With less than $1000 in mods, a rotary will deliver almost peak torque from 4K to almost 8K RPM.

 

not vw turbos they make peak torque from 1800 to 5500 iirc

 

Yet the RX-8 will still be damn fast even without all of that torque. Look at the S2000, mid-low 14s 1/4 mile with only about 150lb-ft of torque.

 

albeit with 8K rpm launches.

 

Torque is what you feel. HP is what actually is. A car with less torque but higher HP will not feel as strong as a car with higher torque but less HP will feel stronger. The catch here is that since you have less rpm's in a higher torque engine, you can't stay in a lower gear as long. That is why high torque cars pull harder off the line, but the high HP car will win in the long haul. If you never get out of 1st gear, then the high torque car will win.

 

We were talking NA.. and thats why I said "almost all".

Yea - piston motors are getting more sophisticated with quad valves & variable cam timing etc.
Buckets full of more moving parts to do what a rotary does with three.
(Five if you count the aux port sleeves.)

 

690hp/580tq. Yum

 

I does feel a little bit stronger but part of that maybe that my secondaries weren't opening all the way.

 

Hey Bruce, Truth is you have an N/A and an Rx7 these both pretty much amount to little torque, now this really isint all that bad i mean think about how fun it is to be able to play with your whole rpm range, i mean these cars redline at 7k no problem. Id say try to get out of the domestic frame of mind and get into the rotary frame of mind

 

Actually I have a really good suction efect in my exahust and I bet there is very little backpressure. this is on my 86.
I have RB header and presilecer, custom made 2.5" mandrel bent pipe into a Dynomax UltraFlo muffler.
After I did this I noticed the aux ports were not working. I played and fiddled but couldn't get them to work. One day I was trying to see if mabey the tube was clogged. I couldn't tell what I was feeling on my finger until I got a peice of paper.
SUCTION! all the way until 5000 rmp there was suction. I tryed on the large opening on the pipe that is supposed to go somewhere( i have it blocked). the one the actuator tube tees from. it had more suction.
I guess it was dumb luck. but when I wire open the ports, after 4500 RPM there is a real power band. In another post though I am bitching about how it robbed me of my low and mid power. I am making some changes until I can get different daily driver. My real daily went out on me.

 

is that the old pontiac 400?

 

Well... you could pull the engine apart and replace the rotors with a set made from solid uranium,,,, that would give you some low end torque..... whould pretty much kill everything else!!!!!

 

why uranium? well neways i have the answer, 20b, DUH!!!???! i remember seeing a 10 second rx7 with a N/A 20b, and im sure it has more torq than the puny 13b.

 

I dont know what it started its life off as, but its 486ci and has an 11:1 CR I believe.

 

Went and asked the guy that owns it. 4.145" bore x 4.500" stroke, 486ci and 690hp/585tq

 

no matter what you do, the rotary will never have a lot of torque. Piston engines feel like they have more torque (well, usually they do), because they hit a big peak so it's really obvious. But riding a piston engine to redline doesn't fell very good. My Rx-7 pulls stronger and stronger to redline, so it's fun.