Jtran Studios low mount single turbo setup completed!
 

Sorry to do do this but though you all would like to see.

Jtran Studios low mount single turbo setup completed! - MY350Z.COM Forums

I will wait to see more info.

You do that :happydance:

Ok JB I will ask my questions:

Why are you re-using Stillen Gen 3 piping?
Is the piping viable for the the extra air being pushed through?
How has cooling been? Not just oil, but water temps?

Kewl. Looks realy kewl.

I'm trying to understand that manifold piping going to the hot-side of the turbo. It looks as if it has to make a 270 degree turn at one point, right into oncoming air from the other side of the engine. Maybe I am not seeing it right, but that seems terribly inefficient.

It doesn't look much worse than mine
http://i19.photobucket.com/albums/b1.../IMG_6206R.jpg

hmmm

-They re-used stillen piping to save money I guess.
-It's not but they are compensating by using upgraded MAFs
-Don't know lol

Custom piping is not that expensive if already are making that much for this turbo.
My concern is the stillen setup was designed & tested for a single purpose, whether you upgrade the MAF still questions the structure of the pipe. Also, how did they merge from gen 3 piping to custom?

u know what they say.. every penny counts. I say lets wait on O&G and see what he posts.

Right, but see how your pipes come together such that both exhaust flows are pointed in the same direction? It appears to me that in the picture of the Jtran setup that the exhaust flows are actually opposing each other at a sharp bend before heading towards the turbine.

Woah, I was waiting for the Dynojet numbers on Thursday to do a writeup, etc... Stillen pipes were used because we wanted to get the car to the show in time, we had upgraded MAFS at the shop so we just threw them in. It's my bday today so I'm taking off work, going to the shop to get some better pics of hotside piping, etc.... The car sounds amazing, I'm happy, saving to build motor and up boost!

I guess they did a writeup on our local forum! lol

We just finished my single turbo build at JTran Studios in Houston, Texas. This isn’t my first rodeo, I had a 2003 twin turbo 350z for many years, fully built, 550whp, etc… First, I’d like to thank Johnny, Amber, Mike and lil man Lakai at JTran Studios for everything they’ve done for me and my Z’s over the years, best peoples I know ! Shout out to 98intrigue here on the forums for stepping out of the box and tackling all the headaches first, made my life a lot easier, thanks buddy! I decided to go single because I’ve had twins before, I wanted something different. Johnny has designed and made crazy power with single kits on the DE and HR VQ platforms so I thought I’d let him have a go on my 40th Anniversary 370Z. We decided on a mid-mount set-up off the transmission for a few reasons, less exhaust piping, I eventually want to go around the track with this car and didn’t want to worry about heat in the engine bay. There isn’t a kit like this (for our cars) out there, it’s similar to the APS single turbo system for the 350z, but better of course  It also gives a stealthier look to the engine bay because you can’t see the working end. Johnny chose the water-cooled CT4-6265 because of the mounting location and also to do something different. We did fabricate the system so a wide variety of turbos can be installed for power needs, etc… Johnny is building a jig for this turbo setup so he can reproduce them for the 370z and G37. There is NO timeframe on this at the moment, but I can say he will be able to reproduce this kit for customers. When I build a car I’m big on supporting mods for the cooling system, drive train, suspension, heat protection, etc… so you will see that reflected in my parts list. I like to make sure once the cars done I can play for a little bit w/o having worry about it/work on it. I am already planning on building the motor sometime next year so I want it to last till then! Parts list below:

• CSF Aluminum Radiator/Condenser combo
• Mishimoto Thermostat, hoses, etc…
• Mishimoto Oil Catch Can
• Greddy Radiator Breather Tank
• Greddy Info-Meter Touch (boost, oil pressure, OBDII, etc…)
• GTM fuel pressure regulator adapter, AEM regulator w/ gauge
• GTM 370z fuel pump kit
• GTM 1 in, 2 out intercooler
• GTM Engine Mounts
• GTM upgraded CSC
• TiAL Wastegate (sitting around 5psi)
• TiAL Q BOV x 2
• DW 650cc injectors for now, waiting on Injector Dynamics 720cc
• Thermo-Tec heat protection, Turbo Blanket, wraps, etc…
• Comp Turbo CT4-6265
• Z1 Motorsports oil cooler kit
• Up-Rev tune by Johnny @ JTran Studios
• JWT Flywheel w/ ACT Clutch
• B&M SS
• Drop Engineering 09+ Nissan 370Z Transmission Mount
• HKS Hypermax coilovers in conjunction w/ H&R spacers w/ custom JTran eyeball alignment
• HKS 170mm Hi-Power muffler, 3” single exhaust and MBRP Resonator
• HKS 1 step colder spark plugs
• Innovative wideband A/F Gauge

more pics later, all I have rite now are shitty cell phone pics, I added a few more to my album of the car, I'll post more later, with Dynojet numbers as well. The collector has a baffle in it to prevent the exhaust gas from having a tumbling effect.

Highest cooling temps I've seen are around 210! OK, I'm out talk to yall later, time to DRIVE!

two inch schedule 10 pipe to a two into one collector with a divider plate between the collector to keep the exhaust from tumbling before merging all the way to a 2.5 to 3 inch concentric reducer on a t4 flange. schedule 10 pipe is used due to the strength of the material compared to traditional gauged stainless. both feed pipes are asymmetrical so by therory it should scavenge the same between the two banks. that should answer the questioning on the hot side piping.

I'm confused, is the pipe headed to the T4 flange 3" going to 2.5" or the opposite? I would think you would not want to increase ID right before the turbine since you would get a pressure drop and loss of velocity.

opposite. 2.5 inch to 3 inch. pressure drop and loss of velocity is minimal. might make a difference in spool by 100 to 150 rpm but nothing crazy. car makes full boost right around 4200 to 4300. gate is being pushed open prematurely due to wastegate location. i would rather it hold boost solid then spike then come back down.

What's the rough area of the opening of a T4 flange? Assuming a 3" ID pipe has 7.06 square inches of opening.

In for updates.

Dynojet numbers tomorrow, with exact boost reading, compared to the Mustang dyno we used to tune the car. We just completed our second oil/gas well in east Texas so between work and this turbo project time is very tight. I'll get back to you with exact pipe dimensions, flanges, collectors, etc.. as soon as I can.

2.5 inch to 3 inch reducer into T4 flange

9500 for a single turbo that we dont really know much about seems a little high? Or is it 9500 installed and tuned?

Thats installed and tuned

Thats droped off and picked up under 10k. Pretty good deal imo.

Boost isnt cheep. Single turbo kits can make as much as twins. Its just a matter of what you want. If your really interested just call the shop. Pretty sure johnny will answer any questions you have. Its just another alternative for our platform. I know hes doing one on a G37 next but these are all local customers who know johnnys work and history with the VQ. Dyno graphs will be posted tomorrow.

Sent from my SAMSUNG-SGH-I897 using Tapatalk

that is super cheap. i guess i wouldn't be that frustrated with the styling at that cost.

Website is jtranstudio.com and questions can be sent via email to jtranbuilt@yahoo.com

Sent from my SAMSUNG-SGH-I897 using Tapatalk

full boost at 4200rpm with a single or 3000rpm with GTM's TT kit. hmmmmmm

i have TT. For that price for a single I would have definitly went that route.

Dynojet rescheaduled for tomorrow due to the cold front hitting with rain and hi hummidity. We figured numbers will be more accurate with decent weather. Ill keep yall posted.

Sent from my SAMSUNG-SGH-I897 using Tapatalk

Sam and GTM are great they put out awesome products and helped us with this build as well. Yes smaller turbos spool faster. Like i said from the get go, I wanted sonething diferent. This build is exactly what i wanted and thats all that matters. The sound this kit makes is crazy. All you hear is turbo. Makes me smile!

Sent from my SAMSUNG-SGH-I897 using Tapatalk

Actually, that's one thing that I missed when I test drove the GTM turbo setup. I really like a lot of turbo whine.

I know what u mean. In my greddy/CJM 350 all i could hear was wastegate. I just heard Haltech mite be releasing a computer at SEMA to controll cams, etc.... Hopefully GTM will release their GTR manifold too!

Sent from my SAMSUNG-SGH-I897 using Tapatalk

full boost at 3000 rpm on twin t25 flanged turbos with log manifolds isnt hard to do. we have a g35 here that is fully built that has twin 2860rs on a jwt kit that makes full boost at 3000 but maxed out at 550 whp. if we would have done t4 divided setup, then the boost wouldve came on a bit earlier. We will have video and dyno chart up tomorrow of the dynojet tomorrow. rained a bit here in houston today and the car needs an alignment

what's the max psi you would push through a gt2860rs before it stops being efficient?

i would guess around 11-13psi?

either way, it's more than the stock motor could handle.

We have gone over 20 psi and made over 600 RWHP and still had room to go,on a VQ35DE engine. A VHR engine can do better . I'll dig up a compressor map and post up.

Sam

uuuh no.. 12psi with the right octane is good for over 500whp which seems to be right on the limit for this block in stock form.

I know people pushing/maxing gt2860rs at 24psi. My questions is, at what point do they become inefficient.