thankyou!

 

Quick video a friend took at local car meet, finally an outside capture of the sound. This is just barely rolling through 1st gear lol




Update on this week:

-oil cooler fans installed, and activated off same relay trigger as EWP fan controller
-oil change, plugs cleaned, and spare set of race plugs ready to go (actually going to try the rx8 trailing iridiums and gap them down to .025)
-trans and diff fluid changed
-hooked up the 4 port boost controller and lines


Testing on roads:

-oil temps no longer exceed 210F in 80F weather, no matter what I do. Even sitting for 45 mins. WOW. Definitely the best mod is the cooler fans. These cores need airflow when sitting.
-still maintaining 110+ psi of oil pressure over 4k rpm, and 85psi at idle of 2200rpm (overall its nearly double than before dropping the pan shimming regulator)
-water temps haven't exceeded 190F in 80F ambient, drop to 167F when cruising

Thanks to some forum responses on another thread, I've learned that mazda information states to measure oil temps going into the motor. I'm measuring off the front cover. So temps are probably 15-20F lower than actually read out of front cover, pre-cooler.

Just some info for anyone else curious about oil temps on rotaries.


Dyno tuning this weekend if all goes well....

Thought about using e85, but its just too much hassle. I don't want to deal with 40% reduced mileage, the wear on the pumps and potential of clogging filters, and I drive the car once or twice every 2 weeks, so can't afford to have corrosion etc.


We're planning to go 10-12psi on pump gasoline, and mix in 110 octane racefuel to 1/2 of the tank, for a total of 100 octane and shoot for 15psi for added security, and call it safe until the transmission upgrade is performed. After we run the car on the track, get a feel for it, check to make sure all the systems hold up, then we'll come back and max out the turbo down the road. Need to make sure oil pressure, oil temps, and water temps stay in check on WOT, and sustained high load. So Tune, transmission, big brake kit, and should be wrapped up soon.

 

I had my car out this weekend, and honestly don't know what I'd do with any more power like you have.... BUT, if it would just SOUND like that... I love the V12-like shriek in upper RPM combined with the raw lumpy idle.

 

E85 will be worthwhile if you 1) Need substantially more power 2) Have a knack for breaking **** 3) Want to see someone else's sponsors quickly fall off their car as you fly past them (or just leave the person in general when they find out what a mindless ******** they are).

It's extensive, but I'd be more than willing to help you figure out the right system for your needs. I'm good at spending money, I'm told.

Don't let these poser ******** get in your way. Keep doing things exactly how you want to.

 

thank you !

 

you're insane but you know how to laugh a lot, and that's what needs to be kept in mind on the internet. Too many sensitive sally's and chatty kathy's

 

Are you using the Davies EWP Fan controller?
Did you only add one fan or one for each oil cooler? Which fans did you go with?
Any thermostat for the oil cooler?

Tried looking through old posts, could not find the info.

 

EWP controller, which controls radiator fans. Using this to trigger the relays for the oil cooler fans. 1x puller fan per cooler. Ebay 7" No thermostat for the oil, no necessary in my warm environment.

 

So, when can we start blowing up your drivetrain? I mean, building the system out?

 

Nelson came in town this weekend and tuned the car, along w/ a big turbo e85 13b and 20b. 3 rotor made over 650hp, 2 rotor over 600hp.

The 4 rotor did great. Boost control was perfect on the new manifold, very easy to modulate w/ the 4 port controller. IAT's solid never over 120F in 90F ambient. Oil pressure never dropped under 110psi, and oil temps /water temps never went over 210F / 220F. We took it up to 10-11psi on 93 octane to 8000rpm. She put down 685rwhp with only 6 degree's of timing on first pull at 10psi. Second pull she did 701rwhp with more timing. Unfortunately we're running out of fuel pump over 8k, hard to believe. Its a mustang dyno that reads 12% under the dynojet down the road so its probably making more in terms of what we're generally used to comparing. With a 12% correction its over 780 at 8k, so when we rev to 8.5-9+ its probably just exponential the amount of power/fuel/air coming in. The drop in fuel pressure is rapid right at 8k and the graph just keeps going straight up. I'm waiting for speedsouth to get me a picture of the chart. Need to repost the video up here. Very pleased. Conservative on timing with a fat 10.8 AFR.
Anyway,

Very very very satisfied with the results. She made way more than ever expected at low boost levels. The goal for this build was to be able to make 800rwhp on pump gasoline with low boost/low risk and it seems like we've got it locked in.

Plan from here:

-weld on a 3rd bung so we can install the third fuel pump
-upgrading to AEM smart coils so we can be sure to have spark at 9-10k and for 20psi boost on racegas down the road
-come back and do another run to 9-10k
-after we confirm all of this works out properly, then we proceed to order gearset or sequential box still haven't decided


All in all the weekend was great, Nelson is just one of the coolest guys I've ever worked with. He's not afraid to tell it like it is. If there's issues with your setup or things that need to be done, his number one priority is protecting the investment, not pushing the limits.

Want to thank the guys at Speedsouth for all of the help, and my best friends for working with me through all the effort to get to this point. Finally she sings!

 

Awesome!

My friend, PLEASE get some high-density padding on that roll bar. If anything were to happen on the road, I would hate to see you crack your skull on those bars!!

P

 

Very nice to hear the excellent results!

Over 700rwhp at 10psi.

I would get that 3rd pump in for peace of mind and leave it at 10psi and 8,000rpm redline and see what havoc can be done with that.

If any video of the weekend was posted anywhere please let us know. That sound

 

https://www.facebook.com/TunedbyNelsonS/videos/10158495692360257/
Blasting around town at 8psi. We've got the boost turned down a little here trying to dial in the traction control between ABS wheel speed and vehicle speed sensor. Thing is just all over the road, scares the sh*t out of me in 2nd gear, holy f*ck lol. Went wide open in 2nd for the first pull off the dyno at 10psi, left 2x black lines all down the road, with the *** scooting left and right. I love it / scared of it

Only revving to 8k as there's a bit of break-up over 8k. I'm going to try lowering the dwell on these LS2 coils up top as maybe they are being pushed to hard on dwell at 4.7ms. IIRC I ran them at 3.0ms over 6k on my 20b turbo car and they did well.

Whats totally insane is the amount of fuel consumption for this engine. Backwards calculations show around 740lph of fuel consumption. can't believe its using up both AEM380's at 8k.

It appears there's a hidden power band that pops alive at 8k, because right at 8k the fuel pressure suddenly plummets, no matter 5, 8, or 10psi of boost pressure and also spark begins to slightly misfire over 8k. This must be where the pport comes to life. Time to add this 3rd AEM pump this weekend and AEM coils next week! 10k we're coming for you

 

turbo PP 4 rotor at 10k with 3 fuel pumps feeding it... just awesome man. no other word for it! congrats!!

 

Thank John. You are one the smartest people I've ever talked too. Nelson and I were talking about you at multiple points. Hoping you come out to Sevenstock and meet us there

 

No sound

 

https://www.facebook.com/david.z.mazzei/videos/10155306642922139/
Here's a quick vid blast cruising with Nelson from the outside at 8psi. Guys, you have to love the internet, some of the comments floating around crack me up, 4 rotor isn't worth it unless its making over 30psi lololololol

While we'll be back to see what the car can do at high boost, let me just say 8psi-10psi is just perfect for this rotary. Makes more power than the 3 rotor car at 22psi, no chances of detonation, good midrange and low-end torque, and plenty to have fun. I feel so comfortable running this engine hard, not worrying about blowing it up because you know its only barely being pushed. No water injection, no e85, no racefuel just fill her up at the gas station and blast it. It literally feels like a big block v8, you have to roll into the throttle or use traction control on the haltech to not blast the tires loose in 3rd when the boost ramps in. We've been playing w/ the boost control settings and have found its best for me to have it tied into the TPS sensor. So as you apply throttle, the boost is based on TPS and you can modulate boost with your foot along with throttle control. Intercooler is working epic. IAT's are no more than 20-30F over ambient. Oil temps haven't passed 220F even when with back to back pulls. Oil pressure remains over 115psi at high rpm, wastegates alllow us to hold as low at 7psi solid. Water temps are cooler than the 2 rotor and 3 rotor with no inter-cooler up front! The carbonetic diff locks so hard when you punch it, the turn-in feels so nice on the stock subframe. Just overall so happy with this setup, to finally get a taste of it UHH I can't wait to tell what's coming up next year, what is being built, and who's involved, but I'm not allowed to talk about it yet

Thanks again to PPRE, Cody Gulstrand, Carlos Lopez, Walker Morgan, and my best friends Justin, Justin, and Cameron



Also wanna thank Super Street for featuring us on their site. Never would have expected it!

 

Really enjoyed spending a half an hour going through ur build thread, very inspiring.

Keep up the good work man

 

Any updates?

 

Took her out for a quick blast in good weather. She just absolutely tears through the gears. I just can't get over the way 2nd gear feels. Nelson's tune is so nice. No worries. Oil pressure, AFR, temps, etc all look great. Once we toss the 3rd pump in its back to the dyno for 20psi Thanks guys

Definitely going to be trying out yaw sensor, g-sensor, and using abs/vehicle speed sensor for traction control so we can actually use over 10psi. Right now its just so sketchy anything over 75% in 3rd gear

 

I remember that stretch of B-ham... I used to drive it on the way to autocrossing at the dog track.

 

SHHHHHHHHH....this video is in Mexico City, not Birmingham


How the heck did you recognize that from such a short clip. Will you be through here anytime soon ?

 

mazzei, what kind of power is this thing making, and at what boost?

2. are you bring it to deal's gap this weekend?

 

Whats up Jacob,

I wish I could give an accurate number dude. I don't really know. The dyno wasn't calibrated to the RPM's correctly. We pulled to 8500 but dyno read to 7k. Anyhow we did record 700hp at 7k rpm on 10-11psi boost. It definitely is sucking down some gas though. almost 70% duty cycle and running out of pressure above 12psi at redline. Hopefully will get back on the dyno here shortly. After we finish it up on the mustang dyno, I'm going to run down the street to the dynojet so we learn what really is the difference between those type dyno's


Won't be able to make it, going to be out at Barber's track this weekend. Maybe one day we can meet up!

 

word.

oh, are you going to take the car on the track, or just go and watch?