AZRR CYM Build Dyno Results

[RCCAZ 1]

Everyone,

Finally completed my initial tune on the FD yesterday. I can't begin to thank everyone who contributed to the end result, but major props go out to Glen Weaver and Tom Walling who've supported me every step of the way on this project. It's been a culmination of ideas and contributions from everyone that came together in a matched performance package with some pretty impressive results. Also thanks to Tony and his crew at UMS tuning in Mesa, AZ. Tony and Glen Weaver worked tirelessly to sort through several issues on the dyno, and are personally responsible for the end result. I began this project more than a year ago with a goal of building a car that produced quick low end spool, yet would flow enough to achieve my power goals of 400-425 RWHP at 14 to 16 pounds of boost.

Final numbers were better than expected. At 12.5 pounds of boost we made 375 RWHP and ~290 ft-lbs of torque. That number climbed to 439.2 RWHP at 16.44 psi boost and more than 340 ft-lbs of torque. Check out the details and my dynographs below!

I was really pleased to have Glen tell me how impressed he and Tony were with my monster IC design. Glen said "we ran the car on the Dyno with load between 3000 and 3800 rpm for more than 20 minutes and didn't see the intake charge temps or water temps increase at all. Your Vmount design is amazing."

For the complete story on my build up, check out this thread:

http://rotarycarclub.com/rotary_foru...ead.php?t=5734

Engine:

AZRR Large Street port (Balanced Assembly)
Custom Vmount designed by myself (12 x 24 x 3.75 inch Garrett core)
Ground X lower intake manifold
Blowzilla TD61 Turbo (Garrett GT35R compressor with ball bearing cartridge and T4 divided hot section with 76 mm turbine wheel and 1.0 AR)
AZRR turbo manifold and DP
Dual Tial 38 mm wastegates
Tial BOV
Primaries (2 stock 450 cc 2009 RX-8 Renesis injectors)
Secondaries (4 1000 cc Yawpower injectors)
AZRR primary and secondary fuel rails
Weldon fuel pressure regulator
Bosch 044 fuel pump, hardwired to the battery
Coil relocation kit
Stainless steel OMP lines
Garfinkle oil pan brace
Competiton Clutch lightweight steel flywheel with new ACT street/strip clutch

Engine Management:

Apexi Power FC
Innovate LM-1 Wideband O2 sensor with display
J&S Safeguard Knock Sensor

Still to come... Aquamist HFS-5 WI system and more boost later this fall!

[RCCAZ 1]

Bump myself... Guess no one's interested in discussing my results. This is Lawrence KS. Is anyone out there?

[albertomg]

Damn. That is pretty nice. Congrats on a nice build. I recently saw CrispyRX7's dyno on his 35 with a well built motor turn similar numbers at similar boost.

Interesting choice on the fuel system. Can you provide more info on you decision to go that way?

Happy boosting

[RCCAZ 1]

Originally Posted by albertomg

Damn. That is pretty nice. Congrats on a nice build. I recently saw CrispyRX7's dyno on his 35 with a well built motor turn similar numbers at similar boost.

Interesting choice on the fuel system. Can you provide more info on you decision to go that way?

Happy boosting

Thanks Albertomg.... my reasoning for going with the newest model RX-8 injectors was that Paul Yaw of Yawpower here in Phoenix has done extensive flow testing of various injectors on the market. He believes that these injectors provide some of the best atomization results of any that he's tested. My choice on secondaries was the result of choosing to go with the Ground X LIM. I think the idea of equal length runners will make a difference on better balancing my engine temps from front to rear housings, however I have yet to take any data to substantiate this. Again, Paul's 1000 cc secondaries provide superior atomization, so in theory I should be able to run 4 secondary injectors with my Power FC at lower duty cycles, and without the need for aftermarket resistors. Not sure what duty cycle Tony hit while making the 439 RWHP pull, however I'm confident that I have more than enough fuel to support another 100 HP. I'll check with him on those duty cycle numbers tomorrow and report back.

Tony at UMS has tuned 100s if not 1000s of cars, and he was truly impressed with the injector performance. His comment to Glen was "Man, I've got to have a set of those." I think that speaks volumes.

[joff]

Awesome numbers!

Curious to what timing advance/split you ended up at?

If you're using standard fuel pressure 43psi, your injectors are probably somewhere around 66%-69% duty cycle -- does that sound about right?

For fun, I just charted your 16psi dyno/boost graphs and marked up your dyno pull's progression through the GT35 compressor map. 440 whp is about 57 lb/min on a rotary, which at 16psi (2.1 pressure ratio) is right at the edge of the map. The turbo's most efficient point (79% efficient) is right around 270whp or 4500rpm and has dropped to 65% efficient at 7000RPM/440whp. Your turbo looks to be spinning at exactly 100,000 RPM at max power and 85,000 RPM at 3800RPM at full boost.

[toyzzzz]

Awesome results Tim.

[mazdamaniac]

Congrats, Tim!
That is a baddass result!

[RCCAZ 1]

Originally Posted by joff

Awesome numbers!

Curious to what timing advance/split you ended up at?

If you're using standard fuel pressure 43psi, your injectors are probably somewhere around 66%-69% duty cycle -- does that sound about right?

For fun, I just charted your 16psi dyno/boost graphs and marked up your dyno pull's progression through the GT35 compressor map. 440 whp is about 57 lb/min on a rotary, which at 16psi (2.1 pressure ratio) is right at the edge of the map. The turbo's most efficient point (79% efficient) is right around 270whp or 4500rpm and has dropped to 65% efficient at 7000RPM/440whp. Your turbo looks to be spinning at exactly 100,000 RPM at max power and 85,000 RPM at 3800RPM at full boost.

Thanks Jesse... still trying to reach Tony to see if your numbers are in the ballpark. I'll try again on Monday.

Originally Posted by toyzzzz

Awesome results Tim.

Originally Posted by mazdamaniac

Congrats, Tim! That is a baddass result!

Thanks James and Jeff. I think you guys both understand how long this project was in process, so it's nice to get a result that exceeds expectations. Thanks again for your support and encouragement!

[Garfinkles Motor Works]

With all that power is the shifter moving around as the throttle is pressed and released or do you have solid motor mounts ? If the shifter is moving give me a call for an engine torque brace . Nice job,now I am going to read through the build thread ,looks interesting .

[RCCAZ 1]

Originally Posted by Garfinkles Motor Works

With all that power is the shifter moving around as the throttle is pressed and released or do you have solid motor mounts ? If the shifter is moving give me a call for an engine torque brace . Nice job,now I am going to read through the build thread ,looks interesting .

Nope, got a torque brace on the car and aftermarket mounts that are pretty darn stout. Also have your oil pan brace. Thanks for making great products that support the rotary community!!