Z Car Garage specializes in dyno tuning vintage cars. Our in-house dyno and expertise in carb tuning can help your engine reach its potential whether it is a street car or full race car. We love Datsun roadsters and recently dyno tuned Erik’s 1970 1600 with great results. Let’s take a look at how he got into Datsuns…

 

Roadster Beginnings

Affectionately named “Audrey”, Erik bought this 1970 Datsun Sports 1600 in 1995 and drove her every day while living in San Jose and Santa Monica, CA. He had lots of adventures in those days, including driving on Highway 1, Route 66, and even blowing a head gasket in the desert outside Needles, CA.

“In 1998 he got a job in Thailand and Audrey was put in storage. Stored outside for years, she suffered the indignity of being broken into and vandalized. (I’m still apologizing to her for that.)In 2000, I moved back to the USA, but had no garage for Audrey, so she remained outside, staying with friends and family. By 2003 she had finally moved inside, but a busy life and no shop space meant that she sat in the corner, patiently awaiting resurrection.”

“Fast forward to 2019: now having a great garage space and some free time, it was time to get Audrey back on the road. On the outside, she still wears most of what’s left of her original 52 year old paint, but inside and underneath it’s a different story: Her factory 96 horsepower has been doubled using the original engine, and her 4 speed transmission has been swapped for a 5 speed. The body was removed from the frame, all suspension, steering, and brakes were redone/upgraded, all electrical wiring replaced, every nut and bolt was either re-plated or replaced, and the interior restoration has begun, slowly changing from black to red.”

 

Erik and Z Car Garage

 

Interested in what our other Datsun Roadster dyno sessions look like? Visit zcarblog.com

 

Datsuns Are Driven! In true roadster fashion, Erik has been Enjoying the Ride in his revived “Audrey”. We got the roadster prepped for a 600+ mile road trip to the Annual Datsun Roadster Meet at Mt. Shasta back in June. The car ran flawlessly:

 

Since Nissan lent us the 2023 Z to enjoy during Monterey Car Week we have been attending events and sharing the Z with fellow enthusiasts. On 8/17 we started with the Motorlux kick-off celebration (formerly McCall’s Motorworks Revival). On Friday and Saturday we attended the Rolex Monterey Motorsports Reunion at Laguna Seca. Finally on Sunday we closed with a visit to the Pebble Beach Concours d’Elegance. Enjoy our report with photos video from Car Week in the new Z!

 

Vintage Racing at Laguna Seca

 

We love vintage racing and had a blast at this year’s Rolex Monterey Motorsports Reunion. On Friday we parked the new Z in Row C of the paddock with our friends from Racecraft. Race car driver and restoration specialist Jim Froula piloted the Greg Alderman 300ZX and a Nissan 240SX, both in IMSA trim. The Z31 features our ZCG CV Axles:

 

The new Z was well-received at the race track. We showed people around the car and let them check it out, always happy to share with enthusiasts! Many people shared their love for the Z and posted photos on social media (thank you!). Below L to R: Larry Oka displaying Gary Cooks’ Z, Rob showing the new Z in Racecraft paddock and Meghan Fuller with the legend Pete Brock:

 

Hanging out with the Breakfast Club

 

Before heading to the track on Saturday, just before the races we joined the Breakfast Club Rally at their pre-rally gathering in Carmel. The BCR organizers kindly gave us a spot to park the new Z during their social hour from 8-9am prior to the event start. It was a great time chatting with new and familiar enthusiasts. We loved seeing our client Jay W with family creating memories in his Datsun 510 featuring our Z Car Garage CV Axles:

 

BCR’s rallies always bring a variety of vintage and modern metal, more photos in the gallery below and don’t forget to join us for Breakfast Club’s upcoming Tokyo Calling2 event 9/24!

 

From Carmel we headed back to Laguna Seca with the new Z for even more racing action. It is worth noting the complete absence of any vintage Z cars Datsun 510s on track at this year’s reunion. Have no fear as the upcoming Velocity Invitational will have a dedicated B-Sedan race group and many Z cars racing! Despite the lack of Datsuns on track we enjoyed the Trans Am and other feature race groups.

 

We left RMMR happy and ready for more Monterey Car Week fun. As if we did not receive enough attention in the paddock, Rob and Meghan were flagged down by CHP– only to inquire about the new Z 🙂

 

Pebble Beach Concours

 

A spectacular ending to Monterey Car Week was Sunday’s visit to the 71st Pebble Beach Concours d’Elegance. Rob and I drove the Z one last time back to Monterey and spotted our friend Tony on the road in his mint 13B-powered Mazda RX-2. Arriving in Pebble Beach, event parking along the famous 17-Mile Drive was a car show itself with cool cars lining the shore:

    

We were bussed into Concours Village and immediately greeted by the Japanese Automotive Invitational(JAI):

 

This display showcased 17 historically significant Japanese cars within several categories including: Concept Cars, “Kei” and Small Cars, Luxury Sedans, Sports Cars, Coupes/Hatchbacks, and Trucks/Utilities. Z Car Garage was proud to support and help prepare the iconic 2003 Infiniti FX45, owned by former INFINITI designer, Julien Thiebaud:

 

Our friend Sean Morris and his team at Toprank International Vehicle Importers showed two stunning Nissan Skylines: an R34 GT-R in rare Midnight Purple II (above) and Kenmeri C110 GT-R:

 

Daniel Song’s Datsun 240Z built by JDM Legends, a “Hakosuka” Skyline and Jun Imai ‘s (of Hot Wheels fame) Datsun 510 Wagon. As with previous JAI displays this was free and open to the general public, more photos in the gallery below!

 

From the JAI we walked past the Concours Village and entered the ticketed, official Pebble Beach Concours….or so I thought. Here, Mercedes Benz had their own display and so did Ferrari. Apparently this was “just a taste” of what lie ahead!

Ferrari display:

 

Mercedes display:

 

The Concept Lawn in front of the lodge was barely visible due to the crowds of photographers and admirers trying to get eyes on the latest dream machines from Koenigsegg, Genesis, Hennessey and Guntherwerks. Lincoln’s new L100 Concept stood out as did Czinger’s 21C hypercar.

 

The Lawn at Pebble Beach

 

The competition field awaited us and I was not prepared for what lie beyond the Lodge…over 200 automotive treasures lined the 17th and 18th holes of the famed Pebble Beach Golf Links. Nestled amid prewar classics were Alfa Romeos, Aston Martins, Packards, and Duesenbergs. We were among well-heeled car enthusiasts sharing similar interests in admiring ornate sculpted hood ornaments, gleaming art deco designs and distressed leather seats.

 

Making this experience even better were our longtime friends Jan Trondsen and Dave Sholz. In addition to being die-hard car enthusiasts and Datsun owners, they are both seasoned Pebble Beach attendees and gave us the royal tour. With MOET in hand, we embarked on a journey back in time to admire metal, leather and artistry. The 100th anniversary of the 24 Hours of Le Mans was celebrated this year at Pebble. Our favorites included the 1979 Porsche 935 K3 Coupe and 1962 Ferrari 250 GTO Scaglietti Berlinetta:

 

Many attendees at the Pebble Beach concours dressed like it was the Kentucky Derby of motorsport.  Party-style suits and dresses, bright colors, and feather-clad hats brightened the lawn during the morning fog along the bay. We had several celebrity sightings including Chip Foose, Wayne Carini and ex-Formula One driver David Coulthard!

 

The judging process at the Pebble Beach Concours d’Elegance has two parts: Class Judges focus on originality and authenticity, while Honorary Judges focus on attention to design, styling and elegance. Dave pointed out that none of the cars we saw are allowed to participate the following year…

 

This Duesenberg caught my attention as the judges scrutinized it. I was able to capture video of the straight-8 engine firing up as well it was beyond impressive:

 

Enjoy this video showing our time at the Rolex Monterey Motorsports Reunion and Pebble Beach Concours!

 

After a few intense hours of geeking-out on the cars we took a break for a meal. Huge thanks to Infiniti and Jul Thiebaud for hosting us!

 

So who was the Best of Show winner? That fabulous 1932 Duesenberg Model J that I captured being scrutinized by the judges!  To be eligible to win Best of Show which is the event’s highest award a car must first win its class. What a machine!

 

With the show concluding we parted with our friends Jan and Dave. Rob and I headed home in the new Z. The bus ride back to the Z was again another car show along the 17-Mile Drive. We spotted an R34 Skyline GT-R and Z31:

   

 

Thank You!

 

We can’t thank Nissan and Infiniti enough for the opportunity to share the new Z and enjoy Monterey Car Week. Stay tuned for dyno testing, in-car and exhaust video for this 9-speed automatic Performance model. Enjoy the photo gallery below and Long Live The Z!

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The 2023 Nissan Z arrived at Z Car Garage on Monday for Monterey Car Week. To start things off right we attended last night’s Motorlux event (formerly McCall’s Motorworks Revival) located at the Monterey Jet Center. Founded by Gordon McCall in 1991 and now run by Hagerty, this annual gala features a preview of “VIP” cars to be featured/auctioned during Car Week and an evening filled with dining among private jets and vintage cars.

 

The 2023 Z at Motorlux

Tuesday was early load-in and we enjoyed driving the Z down to Monterey from Z Car Garage. This is the Performance model in Two-Tone Ikazuchi Yellow TriCoat / Super Black and 9-speed automatic.

   Wednesday evening we arrived at the Monterey Jet Center to find the Z in a prime location near the main entrance and in good company. This venue historically features British, American and European cars so it was pleasant watching folks express interest in the Z.

 

On that J-Tin note, an even bigger surprise was seeing 80s and 90s cars proudly displayed nearby from the RADwood Car Show. It was great to see DrivingWhileAwesome (DWA) friends and Radwood founding members Lane Skelton and Art Cervantes. That is Art’s R33 Skyline GT-R!

 

Hangers Full of Cars

 

Motorlux had everything from supercars, concours-level restorations, resto mods, motorcycles and even helicopters. With the sun setting and hanger lights on we ventured inside to find some really cool machines.

 

People

 

The fun evening was also made memorable by seeing friends. (above) Peter and Gayle Brock, (Below, L) Lane Skelton and Ali Javidan, and (below, R) Chris Brewer of Amelia Island fame. We also saw David and Howard Swig!

 

My favorite display of the show was the Meyers Manx airplane. This enormous vessel was surround by those famous Meyers Manx buggies including the very first one:

 

Enjoy this video from the Motorlux event. We also captured the Z in action while driving down to Monterey:

 

Thank You!

  

Thanks to Gordon McCall and Hagerty for hosting Z Car Garage we had a wonderful time at Motorlux and we are happy to see the event carry on in grand fashion. We also want to thank Nissan for lending us the 2023 Z to enjoy during Monterey Car Week. While there were endless cars to feature from the evening, we will let the photos do the talking. Enjoy the gallery below, and stay tuned for a full report from the Rolex Reunion and Pebble Beach Concours d’Elegance. If you see us or the new Z in Monterey or at Laguna Seca be sure to tag us #zcargarage!

LONG LIVE THE Z!

 

See more of our time with 2023 Nissan Z in June. Dyno results and video incoming for the Yellow Z!

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As Monterey Car Week approaches we are reminded of our time spent with the 2023 Nissan Z in June. Thanks to Nissan, we got to enjoy driving the Z on our favorite back roads and dyno test it at our shop. Part of the fun also included test fitting some aftermarket wheels and checking out the weight distribution. Let’s get straight to the numbers!

 

Power and chassis

In stock form with 91 octane the new Z made 379hp/375tq at the wheels. With a splash of 100 octane we saw gains of almost 10hp at the wheels. Super excited to tune the new Z and unlock more power!

 

Enjoy this video of the Z on our dyno:

 

 

We placed the Z on scales to get curb weight. It was 3455lbs:

 

 

Wheels Make the Car

 

Like previous generations, the new Z is blessed with some of the coolest OEM wheel designs. The aftermarket however makes it exciting to personalize our Z cars with the coolest wheels. We had to test fit some timeless VOLK TE37 Ultra Track Edition 2 and Work Emotion CR2P wheels, both sized in 19″ fitment:

 

 

WORK Emotion CR2P:

 

Big thanks to our  generous clients the Henry and Frank(feature soon) for donating these for the cause! More photos in the gallery below.

The New Z at Monterey Car Week!

 

Z Car Garage is excited and honored to attend the famous Monterey Car Week with the new 2023 Nissan Z!  Huge thanks to Nissan for giving us yet another opportunity to share this sports car with the world at a very prestigious event. On 8/17 we will be driving the Z to the official kick-off party at the Motorlux (formerly McCall’s Motorworks Revival) event. The Z will join vintage and classic cars to be displayed at the famed Pebble Beach Concours d’Elegance.

Later in the week, we will be showing the new Z at Laguna Seca during the Rolex Monterey Motorsports Reunion on Friday and Saturday. If you are catching the race action be sure to stop by the paddock where Racecraft is to say hello to us and the new Z!

 

Thanks again Nissan and LONG LIVE THE Z!

 

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We have the pleasure of continually developing Dirk’s 1973 Datsun 240z to help achieve his vision of a Z car that is adept on the street and track. Improving the driving experience are our Z Car Garage Big-Brakes, Z Car Garage CV Axles, Silvia 6-speed transmission and a host of chassis and driveline upgrades.

 

Dirk shares his experience working with us:

“Collaborating closely with Rob and ZCG has elevated the optimization process. Rob will frequently talk me out of a bad idea, or into a good one (like the OS Giken LSD). Sometimes I talk him into a bad idea and it turns out to work really well, like the S15 gearbox. The most fun is when we brainstorm stuff together like turning the catch can setup into an improvised simple PCV system, eliminating all hints of oil fumes from the car while running.”

Datsun 510, 620 and Z car love

Since our last iteration, Dirk as been back to Z Car Garage for a few major projects. Let’s take a look at his Datsun story first. Dirk bought his first Datsun in 2014, a 1970 510, to learn how to work on cars himself. After learning more about the history of Datsun, and the significance of both the 510 and the 240Z in establishing Japanese cars in the American market, he knew he had to own a Z as well.

  

A year later, the right Z showed up on eBay in Texas, a 1973 in silver gray. After pouring over the photos and talking to the seller, Dirk bought the car sight unseen. The idea was to have a nice Z to enjoy and drive, while continuing to work on the (sometimes not) rolling restoration of his 510. The car was lovingly restored by a dad and his children and in mostly stock condition. Dirk also has Datsun 620 work truck complete with dual-Mikuni’s:

  After many more tweaks, different induction setups, spring rate changes, rebuilt stock brakes, and 24K miles of driving including a few track days, Dirk’s Z was inching closer and closer to his vision.

 Photos: Dito Milian/Gotbluemilk.com 

“After installing a Datsun Spirit STR-3 engine with a set of Nismo Mikuni PHH44 carburetors, the biggest weak spots left were the rest of the drivetrain (especially the stock 4-speed transmission, but the Subaru diff had also developed some bearing issues), the stock brakes, and of course the loose nut behind the wheel – but sadly that last component typically takes too much money and time to modify thoroughly.”

  

After comparing the Z to his Subaru BRZ on the track, it was clear the Z was better at everything except for shifting gears. Since his engine made a healthy amount of torque, but not enough to warrant a CD009 (350z) transmission, Dirk kept looking for alternatives. He also wanted something with slightly closer gear ratios to better suit the engine’s power band. An S15 Silvia 6-speed seemed like the perfect fit and we installed it back in 2019.

S15 6-speed transmission

  

The first S15 box had some weak synchros, so Dirk sourced another one that was installed with OE trans fluid, as well as a set of fresh OE motor and trans mounts to help with shifter feel and reduce vibrations in the car.

“The S15 transmission fit surprisingly well. ZCG built a custom crossmember to locate it, and the shifter lined up almost perfectly. No transmission tunnel mods were necessary. The modern shifter looked out of place, so ZCG built a custom unit that would look stock, and work with the Datsun competition shift knob. A small 6-speed shift pattern sticker modeled after the one used in the Silvia is the only clue there’s something different going on under this car. And of course the driving experience.”

Making the S15 shifter look factory, we are happy with the result and Dirk’s subtle shift pattern sticker:

   

The Datsun Comp shift knob complements the steering wheel:

 

Chassis and Driveline Upgrades

First, there was work to upgrade the steering geometry and suspension. With the car being lowered quite a bit, despite having 1″ RCAs installed, it had a ton of bump steer. Rob installed DP racing adjustable tie rods, removed the front springs, and completely eliminated the bump steer on the alignment rack while moving the suspension through its full range of motion.

New DP Racing tie-rods and in-house alignment:

 

We also refurbished Dirk’s steering rack with fresh parts from our stash:

 

With the Z back in the shop for bodywork we took the opportunity to make more suspension changes. New Koni Race shocks from T3 were installed, which were a much better match for the 300# and 350# spring rates than the Koni Sport shocks they replaced (as Dirk initially ordered the coil overs with lower spring rates, he never replaced the shocks after adjusting the spring rates, and the car always felt underdamped, particularly on the not-adjustable compression stroke):

 

ZCG Big-Brakes and CV Axles

    Dirk visited ZCG and drove “Mrs. Butters”, our 1970 Series 1 240z shop demo car and he was sold on our Z Car Garage Big-Brakes (for small wheels) and Z Car Garage CV Axles! Butters has a way of doing this to our customers 🙂 As fellow S30 owner/racer Glenn C mentioned in his review, on top of braking performance, pedal feel is extremely important and our Big-Brakes deliver. This is a direct result of working with Stoptech to create a totally bolt-in solution requiring no M/C change or additional proportioning valve/adjustments. All fitting behind a 15″ Watanabe or Panasport wheel and retaining factory emergency brake lever! A few details below:

Calipers: Stoptech ST42 4-piston front & rear race calipers (Alum 6061 mil-spec Type III anodized)

Rotors: 280mm x 20.6 with Alum 7075 hats

Pads: Stoptech 309 sport street pads

Blog posts documenting all of our customers running the ZCG Big-Brakes can be found HERE.

A few closer detail shots of the calipers, rotors and hardware:

   

We removed Dirk’s stock brakes and installed our ZCG Big-Brake kit.

 ZCG Big-brakes replacing stock setup up front:

   

At the rear, the factory drum brakes were replaced with our ZCG Big-Brakes. Factory handbrake functionality retained!

    Our Z Car Garage CV Axles help transmit power to the ground and ensure smoother operation compared to your standard half shafts. We have over 70 CV axle kits on customer cars and we are stoked with all of the positive feedback.

  

Also visible on Dirk’s Z are the excellent adjustable lower control arms from Techno Toy Tuning.

  

3 Liter L-Series Power

Unfortunately, the Datsun Spirit engine developed rod knock which was the impetus for a big drivetrain upgrade. Several other parts of the car where refined as well.

 

The L28 engine was pulled, sent to Rebello, and built into a 3L powerhouse. Dave bored out the 44PHH venturis to a custom 38.5mm, to hit the perfect compromise between peak power and drivability. We also installed a fresh water pump, alternator, new fan blade, OEM fan clutch and fresh air filters. The beautiful DP Racing oil pan remained. More photos in the gallery below:

 A custom stainless 2.5″ mandrel-bent exhaust mates with a new set of coated Pacesetter headers and Z Story Street muffler (in a search for a reduction in volume while keeping a nice note). Dirk discusses the clutch/flywheel combo below:

 

“The STR-3 already was able to slip the Exedy clutch and we were never fans of the Chromoly steel flywheel. A Jim Wolf Technologies clutch and flywheel combo was installed after first trying a newly developed Kameari single plate street clutch kit, which we both found too loud and racy for this street car. While the JWT pressure plate yielded a different pedal feel that took some getting used too, it was not too heavy and perfectly comfortable to drive in traffic. More importantly, it never slipped under any kind of abuse.”

The clutch hydraulics were replaced to work with new alumimum flywheel/JWT HD clutch combo:

  

We installed a ZCG-built 4.11 OS Giken limited-slip differential in the R180 along with a custom aluminum driveshaft:

   

Dyno Tuning

 

The previous L28 made 202hp/194tq at the wheels with Rob’s tuning. Now with the fresh 3L it baselined at 245hp/226tq with more area under the curve:

 

Rob tuned the car further on the chassis dyno, setting it up with a very lean idle at Dirk’s request (to minimize gasoline fumes at idle). With A/F optimized and Nismo Mikuni carbs massaged, Rob unlocked another 20hp yielding a stout 265hp/232tq to the wheels:

  

With gains of 62hp/37tq at the wheels over the L28, Dirk is very happy with the new 3L:

“While the Datsun Spirit engine had a very peppy mid-range and made more delicious induction noises, there’s no argument that the more powerful Rebello engine elevated the car to the next level of performance and fun. The entire setup worked incredibly well together, and we hit an impressive 265hp at the rear wheels, or 60hp more than the engine made in its previous iteration, putting it in the 100hp/liter ballpark at the crank. Not bad for a dinosaur engine on California pump gas!”

Enjoy the dyno video and L-series music!

 

Sorting

The little things are what we excel at and Dirk had a list for us to knock out. While at ZCG, we replaced the heavily sandblasted OE windshield, and did some rust remediation in the cowl area, as Dirk had started noticing water making it into the interior fan assembly after washing the car. More photos in the gallery below:

  

The heater and blower motor assembly was refurbished with new ducting seals and lubed linkage:

 

The headlight switch had also developed some issues where sometimes the lights would turn off completely when switching between low and high beam, and was replaced with a good used example from the ZCG parts stash.

“The headlights now worked reliably, the new engine didn’t consume any significant amount of oil, and the whole drivetrain worked together even better than before with the new clutch and flywheel combo.”

 

Unfortunately, 7 months and many miles later, Dirk was back after a minor nighttime crash that took out the left fender, front bumper and valance, and dented the hood. After bodywork and paint from our man William from William’s Auto Body, we installed a euro front bumper, used turn signal assembly, cleaned up electrical wiring from alternator through firewall and sorted his Speedhut GPS speedo box.

  

To improve safety, comfort, and avoid future crashes, Dirk upgraded his headlights to a new set of Holley Retrobrights, and GTR Carbide 2.0 turn signal bulbs front and rear from Headlight Revolution.

“The headlights are a world ahead of the old Maxxima LED units, which themselves outperformed the Sylvania Halogen sealed beams, while staying very under the radar, with their sealed beam-inspired looks. And the turn signals are now highly noticeable, even in the brightest daylight.”

 

Enjoying the Ride

Dirk’s been driving his Z-car pretty much every day since the latest upgrades, and it’s been working phenomenally well:

“The drivetrain + brakes make it as happy to accelerate as it is to stop, and with the quick, closely spaced shifts and eager engine, it’s fun to do a casual grocery run, and to drive quickly. With the electrical systems and all fumes well under control, it’s truly a car you can do anything with, and probably more reliable than my BMW.”

 

We loved to see Dirk driving his Z on rallies and fun runs this year. Most recently we joined fellow Japanese vintage car owners on the Tokyo Calling event hosted by Breakfast Club Rally:

 

Dirk also joined us for a New Year’s Day drive through our favorite Bay Area Backroads:

 

We enjoyed working with you Dirk and it was rewarding to help improve your Z.

“Some say good is the enemy of great, but that’s true if you think you’re done. I don’t see my Z car less as a “build” that’s done. I’m always developing it, just like continually developing a race car (e.g. my Lemons car, http://instagram.com/bittersc243) to stay competitive. In this case the competition is merely for making the Z into the most fun driving experience I can imagine, and the journey of continuous refinement and improvement is a big part of the fun for me.”

 

While Dirk works through a few interior projects (new carpets, stereo upgrade) on his own, we’re getting ready to further revise the front suspension/steering, and wider wheel + tire options. Enjoy more photo documentation of our work in the gallery below. Thanks for your support Dirk and LONG LIVE THE Z!