I know, its been sitting in a dusty corner until I have some time to finish it for driving. The larger injectors (2200cc) and larger twin fuel pumps are here which will support the actual power output. Next is making heat shields, putting on street rubber, additional oil cooler plumbing and actual driving videos can be made!

 

Any reason you chose not to do another of your semi-PP intake setups on the 4 rotor as you had on the 3? Was very intrigued by that piece of work, thought that bit of engineering might have made a re-appearance here.
Other than more fab work of course :P haha

 

that video was awesome!! thanks for sharing!

 

P-port is the way to go to keep the 4 rotor block shorter and lighter. Also you can use pretty much all 13B parts besides the e-shaft. Once you've played around with a 20B, you'll understand..

 

Not a ton to report, its been so busy at the shop that even 1 day a week isnt possible to do 4-rotor work. But enginelabs.com magazine found and loved our video so did a review of it. Very nice article, I enjoyed it

Video of 4-rotor Rotary Engine Assembly Is Automotive Fine Art - EngineLabs

Otherwise I finished up the heat shields and attached the extra oil cooler lines. Hope to eventually get some tuning time and hit the street for break-in periods!

 

work is more important than toys, as work pays for them.

although we are waiting in anticipation for some street tuning vids. Although this build is far superior i still want to know if you can hit 500hp with the 3 rotor?!

 

So I did sneak out for 3 hours and put the 4-rotor on the dyno just for some drivability tuning. Cell phone sound capture, forgot the go-pro Slide throttles and mega overlap made a street tune a bit difficult. Nothing crazy guys just some little runs!! I will disclose that it made 230 ft-lbs at 2500 rpms.... yeah. No power tuning, no miles. And this engine wont even get out of bed until 6k

 

I like how the engine doesn't move at all during the pull, awesome car

 

Sorry if covered already: Have you weighed/corner balanced the car yet? Curious how the weight distribution worked out.

 

That thing screams badass. Awesome car Logan. Can you have it ready by mid October?

 

no flames makes me sad









Sound badass though!!

what is there over the TBs?

 

Wow Logan, awesome. Can't wait til you get some miles on her and tuned for POWER. For now, thanks for sharing! So curious as to why you picked 82 for your car number. Possibly the year you were born?

P.S. Those TB inlet screens seem to "flex" quite a bit when you're on full throttle. Just make sure those babies are VERY secure. Hate to see you ingest one. Oh, and will the TBs eventually move in and out (variable length) similar to the 787B setup??

 

Loving the bottom end torque. Hell that's more than the stock twin turbos peak at nearly 1/3 the rpm.

 

gordon, i am guessing that's because of the different firing order logan is using (which he mentioned in a previous post in this thread) and he does seem to be keeping the revs fairly low.

it does sound strangely similar to an angry high revving 4cylinder engine though...

 

Keep in mind audio frequency pickup, especially from an Iphone doesnt really capture sound well at all. While I cant speak in comparative terms to that of other 4 rotors, Ive heard a bit of this in person and it sounds awesome .

 

I put it on non-level surface just to see roughly what the running weight was going to be. I think it was 2400 something.


Thanks David. Yeah looking good for October event. Hope to have it all sorted by then. We will see.

Flames will be coming soon Just panty hose, you can tell it was a off-the-cuff run haha.



The cell phone definitely didnt capture the sound right, but even in person its much deeper than any other 4-rotor I've heard. Which is what I was wanting honestly. You and me both love the 3-rotor for its more "manly" note. I think it is all in the exhaust setup, its using 4" piping back to 4.5" at the end. The header design is unique to this car also might be that too. Power is looking good so far for 10 miles on her



It fires like the 787b, which is 1324. Revs were only 4500, in person its completely epic though. Hard to describe.




Thanks Lenny. After your visit I made sure to remove that "wuss" exhaust and put on a larger system.

 

That was only 4500rpm! OhMyFuckingGod! So another 7500 RPM to go!!

 

....
I'll just say.. No

 

The idle of this engine is heard in the video at the end. Its very 787 sounding, and not smooth. We can build a much less aggressive port combination to make for much smoother engine operation and idle. It would decrease power substantially of course but could still make somewhere around 500 rwhp.

 

Oh man good point. Geez have I got a while to go! This break-in is going to be like eternity! Haha

 

WTFBBQSAUZ That is amazing. In for final 7500 more RPM results!

 

Amazing haha, keep it up!

 

A simple calculation Gordon is, more rotors=more POWWWAAAAHH

 

Having a REALLY hard time believing that video is only 4500 rpm. The short shifts up to high gear, yes, maybe, but that last pull had to be at least 6 to 7K rpm.

 

i think in one video it went to 5500. But the rev limiter is at 5500 so its definitely not 7k. Sounds way higher!