JoZee\JoZie: A 300ZX Story

A great big thank you to Joe Gamas and the crew at ElectricFederal for a great video!  You can see a couple of blog posts from Joe and his beautiful Z32 here and here.

David’s 2007 350Z

david_iExcuse the terrible quality of the photo!

David’s 350Z came in for a tune with your basic bolt-ons such as a cold air intake, test pipes, and cat back.  We don’t typically blog on “common” dyno tunes but the results of David’s tune were impressive for the VQ35HR engine.

dynotune

We didn’t complete the baseline pull because of how far off the AFRs were (blue run).  At 4500 RPMs we picked up 9 whp and 11 torque.  An impressive 297 whp on 91 octane.  Running with the 370Zs in terms of peak power made.

Bob’s NISMO 370Z TT

Bob came back to us after first having his Z34 tuned.  This time he came back for much more.  Bob, Fast Intentions, and Specialty-Z came together to formulate a plan to turbocharge the Z.  Fast Intentions has just recently began shipping their much anticipated twin turbo kit and we were the lucky ones to first install it.

The kit is offered in different options dependent mainly on turbo size selection.  All turbos used in the kit feature Tial .86 turbine housings made from SS cast for improved flow and heat enthalpy.  This allows faster spool from the turbine.  The base kit starts off with a pair of GT2860RS turbos.  Followed by the Garrett GTX compressor wheel upgrades.  Finally the Tial Alpha series (HTA) turbo as the creme de le creme for those looking past stock shortblock power handling capabilities.

before

The NISMO as it sat before its twinturbo adventure.

disassembly

The VHR ready to leave its cozy engine bay.

engine_removed

Now its time to start disassembly to make way for our twinturbo parts!

stockfuelinjectorsinrail

With the intake manifold removed the stock fuel injectors and rails come out.  We’ll be moving more air so we’ll need larger injectors.

fuelinjectors

Stock injector on the left and our new higher flowing 650 cc injector on the right.  Appropriate adapters for the electrical connection are provided to make it simple plug n’ play affair.

fuelinjectors_installed

Rails, injectors, and adapters installed.

sparkplugs

With the intake manifold removed for the injectors install, we also replaced the factory DENSO spark plugs in favor of HKS Racing spark plugs.

stock_clutch

The stock Nissan clutch (disc shown on top of pressure plate).  Since we’re going to be making more power and especially torque we removed the stock system and upgraded to the SZ Max Street Clutch & Flywheel Kit.

stock_flywheel

The heavy factory Nissan dual mass flywheel also gets ditched.

rearmainseal

We took the opportunity to replace the rear engine main seal.  This would also be the time to replace the pilot bushing that is included in our clutch and flywheel kit.

stock_slave

The factory cheesy Nissan slave cylinder & bearing get upgraded with our own piece also included in our kit.

sz_slave

Our upgraded slave & bearing assembly that includes SS lines and easy bolt in adapter plate.

sz_slave_installed

Our piece installed, ready to go.

sz_flywheel

Our lightweight aluminum segmented flywheel bolted down.

sz_disc

The Max Street kit uses a modified organic clutch disc for smooth engagements.  Those looking to do more aggressive driving like drag launching and slipping will want to use our 6-Puck or 5-Puck options.

sz_pressureplate

Our Max pressure plate bolted down.

exhuastmanifolds

The Fast Intentions casted V-band exhaust manifolds for both the turbos and wastegates.  Beautiful merge of all 3 cylinders as one can see.

turbos

The two stars of the show, Garrett GT2860RS turbos.  Measuring 60mm on the exducer portion of the compressor wheel.  The kits also ship with the oil drain fittings installed for less guessing.  The fittings use an o-ring for sealing against the center section drain.  Notice the elegant taper used on the Tial turbine housing.  All this helps power and spool.

tial_wastegate

A good view of the Tial wastegate(s) used on the kit.

passengersideview

Passenger side of the kit installed.

driversideview

Driver side of the kit installed.

intakefrontview

Ready to go back to its engine bay.

oilpan

The kit makes use of the Greddy oil pan with the turbo oil drain fittings also already installed when one receives it.  Also pictured is the engine oil filter relocation which is also part of the kit.

stock_diff_bushing

A must for any Z34 is removing the terrible squishy liquid filled differential bushings.  Only one horizontal mount is used on the Z33s and Z34s which also makes things worse for movement and wheel hop.

whiteline_diffbushing

Whiteline bushing in place ready to get pressed in further into the subframe.

intercoolerfrontview

Intercooler looking mighty mean.  The Tial BOVs are also easily mounted to the end tanks of the intercooler.  This intercooler is actually separated in the middle and makes use of a divider plate to make sure all of the core(s) is used.  Behind the intercooler is the Fast Intentions 34 Row Setrab oil cooler.

intercooler_sideview

Here’s another view of the intercooler (not an actual picture of Bob’s NISMO).  The intercooler brackets included in the kit are also already painted!  Love that.  Ready to bolt in and go, less install time, and more GO time!

side_view_exterior

A beautiful twinturbo kit for a beautiful Z.

szdyno91

Last but not least our final power and torque numbers for 91 octane.  We installed a Blitz sbc-iD Spec-R boost controller that works also as a boost gauge.  An Innovate MTX Digital Wideband was also installed to monitor AFRs.

Mark’s 2012 GTR

gtr_wet

We previously installed down pipes on Mark’s GTR some time ago (click me to see the old blog post).  Mark came back in for a few tweaks.  One was to make the move to EcuTek from Cobb.  Since Mark is an avid drag racer, EcuTek gives him the ability to make on the fly changes to his launching RPMs.  If the track isn’t prepped as well as he’d like he can lower the launch control RPM for better 60 foots along with raising the RPM should the track and tires hold it.  Changes to launch control boost pressures can also be made.  We also made the move to allow his GTR to run on ethanol.

injectorinstall

The first order of business was upgrading the fuel injectors to allow more fuel for ethanol use.  We went with 1150cc fuel injectors and necessary adapter kit for a simple plug n’ play solution.  Injectors are installed in the above picture.

injectors

Factory fuel injector on the left and our 1150cc injector on the right.

sock

We upgraded the secondary fuel pump with a Walbro “485” fuel pump.  We noticed that the pump socks off the 2012s are much smaller than the ones off of the 2014s.  Small changes Nissan makes throughout the years.

airbox

The factory air boxes (one pictured above) was removed and replaced with open air element filters and larger 3″ piping.  This change allows us to continue running MAF sensors since now the threshold for maxing out the sensors has been moved up.  Tuned on 91 octane will get you extremely close to maxing out the factory MAF sensors.  Thankfully with EcuTek we can ditch the MAF sensors and convert to speed density.  Perfect for someone not wanting to upgrade to an aftermarket intake(s) or for those with larger upgraded turbos.

airfilters

Our new 3″ intakes installed.  You can see the air filters get moved up to the bumper area keeping them away from the engine bay and its heat. The cover for the top of the bumper is removed to show where the filters now sit.  The intake piping is hard to notice since it is powdercoated wrinkle black and we’ve acquired more “open” space with the removal of the air boxes.

enginebay

Final shot of the install.

91tune

After all the modifications were completed we tuned for 91 octane.  Making peak power on 14 psi.  Boost drops off at the top due to turbo sizing.  There are a few things that can be done to help make the stock turbos hold more but in doing so back pressure rises quickly between the engine and turbines.