240Z TwinTurbo

iTrader: (25)

I want to share the new results with my R2 cams and running 110octane race fuel. Here is the general information regarding the setup. Also, find below the post to my build thread:
https://www.evolutionm.net/forums/ev...xperiment.html

Engine
Curt Brown 10:1 2.0L
GSC R2's
Curt Brown ported head
Haltech Platinum Pro PnP
PTCS D200 Dash Logger
ACT 6-puck sprung with lightweight flywheel
Curt Brown Extreme Port intake with 70mm TB
1000cc Injectors
Squash Performance Double Pumper w/ Twin Walbro 400s
Custom SS hardlines


Turbo
Garrett V-band TwinScroll 1.01 a/r turbine housing
Garrett GTX3576r
Self fabricated custom top mount twinscroll setup
self fabricated 3.5" 321ss exhaust
Single Tial MV-R 44mm Wastegate
Tial QR 50mm BOV
Garrett 24.0" x 12.0" x 3.5" core (MPFAB tanks)

The previous dyno charts I posted were done on a Dynojet and the new runs were done on a SuperFlow Dyno, which reads ~10% lower than a DynoJet. Unfortunately, HIS Motorsports is not answering the phone so I had to seek a new dyno.

I previously made 505hp/430tq (DynoJet) on 93 octane, 33psi tapered to 31psi with timing 1deg@5K to 8deg@8k using S2's.



I am now making 573hp/439tq (SuperFlow) on 110octane, 37psi tapered to 33psi with timing 5deg@5k to 15deg@8k.

https://web1.eng.famu.fsu.edu/~jthag...run3_37psi.jpg


Here are the results converted by the SuperFlow dyno to read DynoJet "equivalent" numbers.



Next will be GTX SHOWDOWN Part II: GTX3576r vs. GTX3582r.

JohnBradley

iTrader: (30)

Nice numbers. I have found based on other Superflow Chassis dynos that they read like a DJ out of the box most of the time.

240Z TwinTurbo

iTrader: (25)

Thanks for the killer price on the R2's and your advice for the ignition timing was spot on!

Had I dynoed the car at HIS I was hoping for ~560hp@wheels so 572hp makes me happy. The only thing that doesn't make sense if the dyno's are comparable is that I added significant timing/boost and gained 68hp, but only 9ft-lbs of torque.

Thank you again for you help....as always.

batty200

iTrader: (3)

How hard would it be tocswap a single scroll TiAL housing? Someone has to have one to send for some testing. Good stuff!

spdracerut

iTrader: (2)

The turbo has gotta be near the limit! Can you show the turbo speed?

concept11253

iTrader: (13)

You have an amazing build thread and great results!

240Z TwinTurbo

iTrader: (25)

I won't be able to share data at this time, but it is fair to say a larger compressor would be beneficial for my setup.

94AWDcoupe

iTrader: (125)

power looks good . but it doesnt seem like you are getting a twin spool effect? but not used to seeing superflow dyno numbers.

spdracerut

iTrader: (2)

No doubt about that. Looking at the 76mm wheel compressor map, you're basically operating at PR = 3.5 and that wheel chokes out around 65lbs/min. The 82mm wheel will keep on going to 75lbs/min. I expect you'll gain about 100whp (using dynojet numbers) going to the GTX3582R.

03whitegsr

iTrader: (8)

You are spooling 1000 RPM later on the superflow so you are likely missing the torque peak.

Thing looks terribly laggy now for some reason. It's not applying enough load, or something.

Just FWIW, the superflows seem to almost be a little more generous then even dynojets from what I've seen. A friend that worked for a company that had 3 dynos in house (mustang, dynojet, and superflow) told me the superflow consistently read the highest in all of their testing.

240Z TwinTurbo

iTrader: (25)

The log shows the R2's spooled 184rpm slower vs the S2 when reaching 30psi.
S2s - 30.0psi @ 5094rpm
R2s - 29.9psi @ 5278rpm

As far as the SuperFlow vs Dynojet, I have no reference. I was told prior to the dyno runs that I should expect a 10% lower number with their dyno vs DynoJet. Whether that is accurate I cannot say.

Grimgrak

iTrader: (3)

Would be awsome of Aaron could overlay my dyno with a single scroll ams .63 3076 vs this.
At 4k I'm getting 17psi spike 31 by 5k
Eyeballing it 4k i'm at 230-40hp and 220-30 tq
Max out around 6500rpm and hitting 547whp @ 7400rpm
Max tq of 450 @ 6k
dynojet #'s

If only ER was closer i'd dyno again in this slightly cooler weather as the car feels abit stronger now, might even be close to 565

81.5F and 34% humidity in the dyno room.

03whitegsr

iTrader: (8)

Don't know then as the dyno CLEARLY shows a massive delay in torque delivery. Peak torque looks to be around 5400RPM on the dynojet and 6400RPM on the superflow. Are those boost numbers from the dyno logs or street logs?

MASSIVE smoothing would shift things like that and completely kill torque peak readings.

Don't get me wrong. I don't think your setup is responsible for the difference, I think they dyno sheets aren't at all comparable.

240Z TwinTurbo

iTrader: (25)

Boost vs RPM data is from the actual dyno runs. I was looking at the graphs and I agree they don't jive and I cannot imagine the cam change accounts for the difference. I believe there is a AWD DynoJet in Charlotte so I may redo in a few weeks.

TheBoz

iTrader: (9)

Did you get your wastegate issue all sorted out. Do you have some street logs with a VDR, because that spoolup seems super lazy. I remember you had a log at one point in time that was 30psi at like 4k or something along those lines. Just wondering if you are still chasing other issues.