Scorke, one of the reasons I am not a big dog person is because I always a bit amprehensive about them throughout my life because they always felt like loose cannons to me. I ended up growing up a cat person.

If you can believe it, One of our good friends has a pit and its the most lovable dog I have ever met in my life and the first dog I have ever seen/experienced where the alarm inside of me never went off.

Kinda funny that a Pit of all dogs would start to open up my heart to dogs.

 

I have a RnR 3076R kit waiting to get shipped to me I hope it makes 400whp on pump.On pruven dynojet

 

I may try going to a .62 exh housing on my ATP, from my .82....... I hope this will increase spool and not kill my top end, what do you guys think????

 

Im curious why your top end HP falls off with a turbo like this?

 

Because it runs out of steam. My turbo makes full boost about 800 rpm or so earlier than a 35R, the negative side of that is that cannot blow enough air ar upper RPM's to keep the power up. 4 psi of taper is what this dynosheet reflects, 30 psi peak at 4600 rpms or so, then tapering to 26 by 8k.

However dissapointing some may be with the fact that the top end tapers off, if top end didn't taper it would mean that you are not fully utilizing your turbo. When I see a dynosheet of a big turbo'd car and the power is still climbing at 7k, it makes me shudder, then makes me look at my graph, and be thankfull that I reach peak tq in the middle of 4 grand, and have a turbo that I am using to its fullest in the meat of my powerband, as opposed to getting another 100-200 hp out of a big turbo and picking up around 1k rpms worth of spool time.

Scorke

 

Well then, congrats!

 

Scorkle,
First, major props on the great numbers and awesome power band. I'm not surprised though, since you picked one of the best tuners in the country to dial it in. (Shamless plug for Doug at Topspeed .)

I often compare my power under the curve to other 2.3s & 2.4s, with 30R turbos. Believe it or not, my setup's low rpm power often beats or matches cars like yours with smaller turbos. However, I just now compared my power at and around 4000rpms to yours. Your car definitely does what it is supposed to do: outspool and out torque my larger turbo setup. Very nice! I would love that power band and additional responsiveness on the street. I think you made an excellent choice there. Also, you are right about the torque. It is fantastic. I've posted up your chart and mine below so you can see exactly the comparison I was talking about without having to surf the net.

Scorkle's 2.3 properly tuned with 3076 on race gas:


My 2.3 properly tuned with 35R on race gas:

 

Smoggie, thank you. I have been very envious regarding your car and your particular setup ever since you decided to go the 2.3+35R route, hearing words like that and your praise means a lot!!!!!!!!!

I've been trying to design a good "MAF Killer Setup" avatar just for laughs, when and or if I finish it I think you need one too haha.

Thanks man!

Scorke

 

Scorkle,
Here is another 3076 comparison for you. This is one of the highest WHP and WTQ dynojet pulls I have come across. It is Alfred at Tuning Technologies' car and has the following:

Tuning Technologies brand new, just released turbo kit
Stock bottom end
Stock head with hks 264 cams, stock cam gears
Stock: intake, throttle body, intake mani
Stock ignition
Stock fuel system with Walbro and 720s.
Stock ecu with ECUFlash
Full exhaust
Nisei intercooler and piping

2.0 with TTech 3076


2.3 with 3076

 

WOW so he made less hp with the 2.3 but picked mega tq.

 

Sweeeeeeeet that TQ difference is what I'm all about hehe. What manifold is Alfred using, or is it one of there own?

FWIW, I am running

Stock: intake, throttle body, intake mani
Stock ignition
Stock fuel system with Walbro and 780s.
Stock ecu with EcuTek(ecuflash soon).... I like the fact that more and more people are putting down some great numbers with lots of stock parts.

I hope EMR8 you are looking at this 2.0 graph. Comparing his 2.0 and 3076 to my 2.3 and 3076 shows you exactly what the stroke does, my entire curve is shifted a decent bit to the right, where his peak WHP comes at about 6100 rpms I'm making it at about 5700, his peak WTQ is at 5700 rpms vs my 4700rpms, and mine runs out of breath about 500 rpms sooner.

Scorke

 

2.3's strangely enough usually do this. When I went from 2.0 to 2.3 on the same exact setup they power numbers were within 7/10ths of what it was before, yet I gained 40 ftlbs of tq.

Scorke

 

I think these three dyno charts make for a very informative comparison. All three are on the same model dynojet and all three have similar, easy-to-compare modifications as well as the stock ecu engine management.

The Tuning Technologies manifold is amazing. If you have ever seen one of the old Vishnu Stage 3 manifolds, it is similar in design philosophy as it uses ultra-short, low profile runners that easily allows for the use of the stock airbox and heatshields. Here is how Alfred (the owner) describes it:

"The exhaust manifold at a glance looks like a standard Stainless tubular manifold but upon closer inspection you will see that it’s not. It is hand made from Schedule 40 Stainless pipe and is guaranteed against cracking. The manifold looks great with or without the heatshield on. If you opt to not get the heatshield the manifold is in the open for everyone to gawk at. Its short runner design is to decrease spool up time and also allows us to incorporate the stock airbox and heatshield.

The turbo itself is a standard Garret GT3076R Dual Ball Bearing turbo. We decided to utilize Garrett’s widely known yet seldomly used true 3” hotside. Most other kits utilize the old style 5 bolt housing which is nowhere near 3”. Our kit is a true 3” system from the exhaust turbine to the downpipe. No one can claim this. All this and it is still miles from you’re A/C compressor.
The compressor housing is the large 4” anti-surge inlet AKA the ‘K’ cover."

I'll get some pics as soon as I can.... It is really something special IMHO.

 

Just for kicks I tried to make a plot of the Alfred's 2.0 vs my 2.3

RPMS/My WHP/Alf's WHP/My WTQ/Alfs WTQ
3500 150/110 / 225/160
4000 250/170 / 325/220
4500 375/275 / 440/310
5000 450/375 / 470/390
5500 470/460 / 450/440
6000 490/500 / 430/430
6500 470/500 / 390/410
7000 460/470 / 350/350

Scorke

 

I am running what was described to me as a "prototype"= one of the early Vishnu Stage 3 kits. Seems like Vishnu/TT/Alfred might know what a 30R needs to sing?

I find it funny that Alfred and I are running similar setups with very similar results, I love hearing that I am running something that works!!!!!(Not that I didn't think I had something good going anyway)

I alike Alfred am running the 4 inch anti-surge ported inlet, and the 3" hotside, and like there mani I can run the Heatshield if I like too!!

Scorke