The shop is busy dyno tuning, servicing and upgrading Z cars. Enjoy this brief update from Friday, December 15th.

S30 Z Cars

 

Rashid lives in Dubai and his Datsun 240Z is getting 3.2L L-Series with pH44 Mikuni induction and exhaust header, ZX 5-speed transmission, OS Giken 4.11 LSD, Z Car Garage KW coil-over suspension, our Z Car Garage Big-Brakes (Stoptech) and 16″ Panasport wheels:

 

David’s 1972 Datsun 240Z is getting a Rebello 3.0L, 240SX 5-speed transmission and 4.11 OS Giken LS. It is also getting our Z Car Garage KW coil-over suspension and already has our V1 (328m) Z Car Garage Big-Brakes. Both cars will feature the T3 steering rack that we are big fans of:

 Both Ryan and Beau’s Datsun 240Z cars left the shop recently. Ryan’s Z has LS3 V8 power while Beau’s 1976 280Z has an L28 with stock EFI. Both cars feature our Z Car Garage Big-Brakes (Stoptech), Z Car Garage CV Axles, Recaro Specialist seats, A/C and dyno tuning. Full features on both coming to zcarblog.com!

 

Lou’s Datsun 240Z came in for mechanical sorting. Excited to share his story on zcarblog as Larry also races with us:

 

Nissan 300ZX (Z32)

 

We have several Z32 NA and TT cars currently at the shop. Gary’s Twin Turbo (above) just got a new set of BBS LM wheels. Full update on this car soon! Paul Ferrari returned to ZCG since we completed his Epic Z32 Build in 2017. He’s ready for ethanol, after running this car on race fuel for many years. We will be installing dual fuel pumps, BDE top fuel rail and all the fixings:

Kevin’s Slicktop Z32 is in for a driver’s side window replacement and some touch-up. Love this Z with WORK wheels and Stoptech Big-Brakes:

 

Hakosuka Skyline

 

Sebastian’s Skyline is at the shop and we are doing a suspension refresh, engine work adapting our Z Car Garage Big-Brakes (Stoptech) to this Hako. We hope to offer this in the future for C10 clients. We hope you enjoyed this shop update, stay tuned for more on zcarblog.com and LONG LIVE THE Z!

 

 

Z Car Garage routinely services and modifies Nissan’s R35 supercar and today we have two that visited us for transmission work.

Anthony’s R35

Anthony came to ZCG after a dealership pulled a transmission failure code on his 2009 R35 GT-R. There is a common defect in the pressure sensors inside the transmission of specific model year R35s and ZCG can provide a client a little more than a dealership simply replacing a part. If we see something that is a known issue we like to offer an upgraded solution.

After getting a quote for a substantial amount at the dealership, Anthony reached out to us, brought the car in and we confirmed the failure. Jack’s Transmissions out of Colorado is a well-known R35 transmission builder and we had them build a “hot rod” unit with upgraded pressure sensors and clutches.

 

We removed the transmission and sent it to Jack’s. With the upgraded pressure sensors we needed to re-program the ECU and dyno tune to make sure it performed well. Anthony’s R35 made 511hp/478tq at the wheels, enjoy the dyno run video below:

 

 

Hector’s R35

 

Two weeks later, Hector visited us with is R35 having the exact same transmission code issue. We removed the transmission and re-installed the rebuilt unit from Jack’s. In the exhaust area we found downpipe issues… the passenger side turbo had a really terrible repair on the turbo charger housing in an attempt to get it to seal:

 

We removed all of that and repaired it correctly. With the exhaust off we were able to replace the outlet gaskets, all of the turbo studs and nuts plus a missing exhaust bracket. All exhaust system issues were corrected.

  We also dyno tuned Hector’s R35 after the fresh transmission was installed and it made 501hp/494tq to the wheels. Enjoy the dyno video below:

 

 

Both GT-Rs are making great power and driving at full power with beautifully shifting transmissions. This is another great example of why independent specialty shops exist…we take over when the dealership says just replace it with a stock part…Long Live Boost and Long Live the R35!

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Jack Atkinson, friend, extraordinary designer, fabricator and creator of the Primadonna Z, left this world on July 15, 2022. He was 68. Jack and his wife Yolanda have been a part of our lives since the beginning of Z Car Garage. We send our deepest condolences to Yolanda and their family.

 

Being lifetime members of The Z Owners of Northern California (ZONC) and supporting our shop along the way, we are forever grateful to them. This is our tribute to you, Jack. We miss you and know you are out there Enjoying The Ride!

Design and Fabrication

 

In the automotive space, Jack was a visionary designer and self-taught fabricator. Many enthusiasts in the Nissan/Datsun community to this day are still impressed with his iconic “Primadonna Z” based on the 1970’s Datsun 240Z sportscars. This is a very special Z car with a history that will be shared in a (deservedly) separate blog post. Briefly, Jack Atkinson built three totally custom 240z cars in the early 80’s. In 2021, Z Car Garage helped reunite Jack and Yolanda with his first Primadonna Z build:

 

Heavily influenced by the wild IMSA Z ‘s and Porsche 935 bodywork, Jack hand-fabricated the body pieces and affectionately named the cars “Primadonna Z’s”. Only three Primadonna Zs were made. This red car is the first one Jack built, here is a period photo of it:

 

Jack would go on to build and eventually sell the Primadonna kit, spawning black and white versions:

 

The whereabouts of the black and white cars have been fairly well-documented over the years, eventually landing (and thankfully) in the hands of caring owners. The white car (known as Jettlag) and red car (known as Z Bait) are currently with Eric and Allison Knutsen of Southern Florida Z. We have so much to tell you about this car’s history, from its current whereabouts back to inception in the skillful hands of Jack. For now, a nice primer can be seen HERE.

 

Datsun Destiny

 

Thirty-six years later Jack was reunited with his first creation, Primadonna Z #1. The Z arrived at Z Car Garage and we were able to get it started and take both Jack and Yolanda for a spin. It was incredible to see this Z in person and even sweeter to witness the reunion. This would be Jack’s last ride in the car he built by hand before he passed.

 

Here is short video of Rob and crew getting the Z started and rolling on the street:

 

Back in Z Game

After a 20 year hiatus, Jack’s creative mind and passion urged him to get back into modifying Z cars. This time he chose the Nissan 300ZX (Z32) as his canvas, building two “Primadonna Z32” sportscars.

 

The first Z32 was a 1993 convertible (above) that was transformed into a widebody with several iterations of livery, wheels and color schemes. That was Jack: always seeking to improve his designs:

“I wanted to take an already nice looking Z and make it look like a super car. Even though this car is a one off, my insurance is the complete set of molds, from which the components you see were made. I made the fiberglass molds from the hand-sculpted prototype body of wood, aluminum, styrofoam, fiberglass and bondo. Body components were constructed using hand laid S-Fiberglass, Carbon Fiber and Kevlar and rolled out with a high temperature resin.”

The build started in July of 2005 under a canopy in his backyard and took 6-months to complete-including paint. Below, build documentation and the Primadonna Z32 in all-black:

 

The second Z32 was a 1996 Twin-Turbo with only 13,400 miles on it. This stunning ZX was one of the last Z32s to roll off the line (#247 of the last 300) and Jack’s hand-made body-work highlighted the car’s lines, while leaving the ‘looks-new’ interior in full view through the windows and t-top. Jack garnered many awards for both Primadonna Z’s including Best of Show and First Place at ZDay in Pismo Beach:

 

Jack’s LS3-Powered Z32

 

Jack developed a love for Corvettes and we helped him bridge his passion for the Z by performing an LS3 engine swap into his Primadonna Z32 Convertible. This was a dream come true for Jack, earning him a prize in the Z32 Ultra Modified category at ZCON 2021. Here are a few photos of us wrapping up the LS3 swap with road-testing and dyno tuning. Full report soon!

 

It even sports full A/C and OEM shifter for the automatic transmission. The Z was loaded up with the OMS pace car and heading to ZCON 2021! You can hear Rob discuss Jack’s LS-powered Z on this episode of Hoonigan Autofocus with Larry Chen from the 34th Annual Z Car Convention (ZCON) hosted by ZCCA in Colorado Springs.

  

Fellow Z car enthusiast and ZONC board member Ann Devor on Jack’s creative work. Jack inspired many Z-car enthusiasts, including younger folks:

“Jack, with Yolanda’s assistance with fiberglass molding, designed and fabricated all manner of auto body parts – fenders, noses, tails, splitters, wings, all to accommodate the bigger wheels that were necessary for his aerodynamic designs. And the wheels were big! Wheels for Jack’s cars were custom made and it was always one of his favorite jobs to put his new wheels on for the first time. And to his last days, he wanted a set of new wheels for one of his cars. Jack was always thinking about the next big thing he wanted to do, whether it was a road trip or a new design for a car.”

“When Jack started working with vinyl applications and graphics, a whole new world opened up and added to Jack’s already respectable number of design innovations. Jack’s cars visually popped with their huge wheels covered by muscular fenders, big wings, splitters just barely clearing the asphalt, and car paint clothed in colorful spears, stripes, arrows, and emblems. There is nothing else like Jack’s cars.”

Roadtrip Leader

 

Some of our greatest memories of Jack are the numerous roadtrips he led (with Yolanda’s help, of course) with ZONC. These memorable drives would kick-off at Z Car Garage, with Jack briefing a large group of enthusiasts. You could also count on seeing Jack’s car equipped with a CB radio antenna, whether it was a Z car or NSX. This desire to share the road and its adventures carried with him later in life to the Santa Clara Corvette club where he would lead them on epic cross-country drives.

 

Datsun Family

 

Jack and Yolanda have supported Z Car Garage since we opened our doors in 2004. They helped us design and produce special t-shirts and swag (more on the way!) that you may have seen at various race events and gatherings. We are forever grateful for their friendship.

 

Love. Jack and Yolanda were in love for 43 years. Their partnership was inspirational, doing everything together including working side by side as business partners and enjoying automotive hobbies. Indeed, it was tough to get a picture of them apart, so most of my photos are of them together 🙂 Here are Jack and Yolanda in 2008 at a Z Car Garage dyno day, in their NSX:

 

We Miss You Jack

 

On October 22, Z Car Garage attended a Celebration of Jack’s Life in Bakersfield, Ca. There was an incredible outpouring of love from friends and family at the event. Jack’s passion and love for sharing spanned across different marques, eventually reaching NSX and Corvette clubs.

 

The celebration of life also brought people together. We met Eric and Allison Knutsen, current caretakers of the Primadonna Z cars all the way from Florida. The parking lot was a mini car show with Jack and Yolanda’s cars as well as friend’s rides. We think Jack would be right at home seeing the gathering of cars and people. Enjoy the photo gallery below:

 

Jack is at peace, and his story will continue to be told. We were fortunate to be in his presence and cherish the time we spent Enjoying The Ride. He truly embodied the words Mr. K said best, “Love cars. Love people. Love life.” Our sincerest condolences go out to Yolanda and Jack’s family. We will miss you Jack!

 

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The Nissan 300ZX Twin Turbo is one the best Japanese sports cars of the 90’s. Keeping them on the road is our passion and we love to see our clients like Peter H Enjoying the Ride after some Z Car Garage power, chassis and aesthetic upgades.

 

Let’s take a look at how we made the already-fantastic 300ZX a well-rounded sports car, starting with Peter’s Z-story.

 

It’Z Never Too Late to Z

 

Peter was not always a Z-car enthusiast, but as we all know it there is no time like the present to own one and he acquired his Z32 from a prior Z Car Garage client:

“My experience with ZCG started back in end of 2016 when I acquired the Z from one of their former customers. To be honest, I had a very limited knowledge on Nissan Z cars before 2016 as I had a heart on rotary engine (Mazda FD RX-7) until I connected to the Z and its timeless design. I first brought my Z in to ZCG for power steering leak as the car was exclusively maintenance by ZCG and I want to keep it that way and I was impressed with the quality work of ZCG and their knowledge. Istarted to chat with Rob about the car and learned a lot from Rob about Z cars.”

 

Over the last 5 years we helped Peter with regular maintenance along with performance upgrades. Peter really wanted to give this car the attention it deserves while enjoying the occasional open track day.

Power Upgrades

 

Prior to power upgrades a few items were addressed. The 1990-1994 Z32TT’s have fuel injector problems because Nissan used a wet coil design. This left the injector coil wire prone to oxidation over time and eventual shorting. The solution? Convert to later style injectors using the early fuel rail. For Peter’s Z we wanted to run 740cc injectors which is only available in the new style:

 

More engine work including full timing belt services along with valve cover removal/refinishing:

 

Driveline was upgraded with a JWT HD clutch and flywheel. Keen observers may note that the exhaust has changed too!

 

Larger downpipes greatly improve flow over the stock manifolds. The best downpipes for your Z32TT can be found at SpecialtyZ. These are 3″ units:

 

The Z was treated to a chassis steam clean, making a clean grime-free backdrop for the new exhaust system. Downpipes were mated to 3-2.5″ SPZ mid-pipes and Greddy SP1 Exhaust:

 

We installed more parts from our friends at SpecialtyZ  like their Selin dual MAF. To improve breathing we also installed larger Stillen intercoolers and charge plumbing from Ash-spec. Managing boost is a Greddy Profec E Boost Controller:

 

Finally, low-profile engine mounts from BDE offer more turbo inlet clearance and oil temps kept in check with a Concept Z Performance full Flow Oil Cooler Kit:

 

Recent work at Z Car Garage included a repaired turbo actuator, oil plan replacement, repaired heater core, new OEM wiring harness and minor electrical sorting from a 3rd party gauge installation.

Dyno Tuning

 

We dyno tuned Peter’s Z picking up 25hp/32tq for a total of 36hp/341tq at the wheels:

 

Enjoy this video below showing the dyno run, a walk-around, take-off and brief track footage:

 

Big-Brakes and Chassis

 

As every Z32 owner knows, the stock brakes just aren’t up to the task for track duty or even spirited driving. More power exacerbates the issue and you know how we feel at ZCG:  It’s Stoptech Or Don’t Stop At All. Peter eventually experienced the difference:

“The Z was cranking out 355wHP but with stock brakes and heavy wheels. The acceleration was great but it had a big problem on stopping. I first upgraded with bigger rotors but it did not feel enough stopping power when going downhill. I brought my concern to Rob and Rob made it clearly to me Stoptech BBK is the only solution on Z32s.”

  

We installed the 332mm Big-Brake Kit using red calipers and rotors. Stock vs Stoptech:

   

At the rear, stock Z32 calipers were paint-matched to the Stoptech red up front.  Sport kit slotted rotors with 309 pads and SS lines throughout:

    

In addition to their function, the Stoptech’s look nice too!

 

A few chassis upgrades included Powertrix Front Strut Tower, Stillen Front Rear Sway Bars, SPL Titanium Tension Rods, full Tein Flex Z Coilovers and new steering rack boots/bushings:

 

Interior

 

Peter wanted us to sort out his aftermarket gauges (Prosport Boost Gauge, Oil Temperature, Water Temperature Gauge), install a new steering wheel and upgrade lighting:

    

The dim stock displays benefitted from new LED sources. Check out the difference:

 

Even the climate control display is improved:

 

More LED upgrades throughout the cabin:

 

Peter’s interior touches include a Custom Alcantara on factory steering wheel with thumb rest:

 

Recaro Speed Racing Seats with Bride Seat rail/bracket, Nismo Clutch and Brake Pedal, Cusco accelerator pedal, and custom carbon fiber interior door sill with a logo “Fairlady” :

 

Aesthetics

 

To appreciate the 1991 Aztec Red 300ZX Twin Turbo pictured above we must tell you a story of love, heartbreak, persistance and ultimately satisfaction. Z Car Garage client Jas D has been with us since 2014 when we helped build his 1990 Nissan 300ZX Twin Turbo. This Super White, 44k original-mile example was treated with all the ZCG touches that make a Z32TT go from wonderful to extraordinary. We dubbed it the “Z Masterpiece” (see more here) as it embodied the total package: Power. Handling. Braking. Aesthetics:

 

Jas totally Enjoyed The Ride in this Z, adding 28k thrilling miles with ZCG maintaining it over the years:

“My brother and I have been ZCG customers for almost a decade. I met Rob when I called about getting a PPI on what became Z Masterpiece. At the time, a Super White manual came up on AutoTrader (I LOVE Super White-OMG). It was a low-mile, one-owner, meticulously-maintained time-capsule. Rob actually said WOW after the PPI, and we worked with ZCG over a couple years on a few iterations until we got Z Masterpiece. That car was perfect!  My dream Z; I loved driving that car EVERYWHERE! It is probably my favorite car of all time!”

  

Unfortunately, in 2016 the Z was stolen.

“On October 29, 2016, Z Masterpiece was stolen. We cried, we laughed, we got angry, we sulked for a couple months, forgot about it, and then my dad found the car driving into SF on January 25, 2017. The car had clearly been driven like it was stolen. But, believe it or not, all the expensive components were still on there. We sent it to Rob right away, and he helped us turn Z Masterpiece into the Red Devil Z (which I purchased on April 20, 2017 with 66,XXX miles).”

From Z Masterpiece to Red Devil

 

Persistance paid off, and Jas found a really clean Aztec Red ’91 Z32TT with only 66k miles. All of the upgrades from the Super White, Z Masterpiece were transferred over:

“Rob pulled the motor from the Super White, re-did all the seals/gaskets, and then put the driveline back together into the red Z32TT.  Coincidentally, both cars and engines had 66,XXX miles when this was done in summer 2017.”

 

 

Let’s take a look at the modifications that turn the already stellar Nissan 300ZX Twin Turbo into a superb, balanced sports car.

Engine

 

Though bone-stock with an amazing 44k miles on the clock it needed some attention. We went through the hydraulics and performed full 60k-mile services.

 

Jas wanted to improve power and handling and we happily obliged with a comprehensive list of upgrades this year.  Starting with the drivetrain, the original transmission was replaced with a brand new(!) unit from Nissan:

 

The clutch had seen better days so we replaced it with a JWT unit including their heavy duty aluminum flywheel:

 

A JWT ecu w/boost jets manages uprated NISMO 740cc injectors and the Selin dual MAF. Improved breathing comes from Ash-SPEC inlet piping and dual JWT pop chargers:

   

On the exhaust side, restrictive original downpipes were replaced with these beautiful Specialty Z 3″ downpipes. Note the divorced wastegate piping:

 

Following the new downpipes are more parts from SPZ including 3″ mid-pipes and a cat-back exhaust system to replace the OEM setup:

 

OEM vs SPZ:

 

More upgrades. We installed 4.08 Leader gears, Ash-SPEC Massive SMICs, 2.5 IC tubing, and  SPZ Hi-5 upgraded clutch. The BDE low-profile Z32 motor mounts are a smart alternative to OEM that allows more clearance larger for intakes:

   

Rob recently dyno-tuned the red Z, making 353hp/353tq to the wheels on 91 octane:

 

Stoptech Big-Brakes

 

With all of the speed parts installed next we tackled chassis improvements. Let’s begin with brakes followed by suspension:

We love Stoptech’s products and use them on our own vehicles.  Z32s are relatively heavy and with higher hp the stock caliper/rotors can be taxed quite easily. Jas took it up a notch and ordered a Stoptech 4-wheel Big-Brake Kit for his beloved Z.  Shown above is the ST40 caliper (front) squeezing 332 mm rotors and at the rear are ST22s on 328mm rotors.

The installation:

 

Yes, they are pretty but also very functional. Speaking of aesthetics (that are functional, too), the new calipers are nicely framed between the spokes of these sweet VOLK TE37SL wheels, finished in bronze and sized 18×9.5/10.5 in high-pad offset with center caps.  We like your taste, Jas.  The lightweight TE’s were wrapped in Yokohama tires:

 

Suspension

The suspension was gone through completely with all new parts. KW V3s are our favorite coil-over setup, replacing the Stance coil-overs that the Super White Z had. Stillen sway bars are also shown:

 

Stock vs KW V3s installed front:

  

Rear:

  

Every little nook and cranny of the suspension was handled. New SPL tension rods, upper front control arms, new rear wheel bearings and HICAS removal/eliminator:

  

T/C rods, Stillen sway bar, we also replaced the rack bushings:

 
The Z looks great!

  

The interior is in great condition as well:

  

Jas and his brother love the Z. Thanks for letting us be a part of your journey!

“The Red Devil Z is vicious and so fun to drive. It is the quintessential 1990s Japanese sports car  – red – gold wheels – TTs – exhaust.  It goes fast. It stops fast. It turns fast. Z32TTs are the BEST! We love and respect Rob and the team at ZCG. Rob is a total big brother. He and the team have been with us through the passion and pain.”

**This Red Z32TT is for sale on Bring a Trailer!**

 

The quest for the perfect Z is almost complete as Jas just found one of the cleanest Super White z32s on Earth. That means the red car is for sale! Jas is listing it on Bring a Trailer. We will update this post and social media when the auction goes live so you don’t miss out! For now, enjoy the extensive photo gallery below, and LONG LIVE THE Z!

 

Lots of pictures in the gallery, enjoy!
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