We met Kenin in 2012 when he visited ZCG with his Infiniti G37 IPL. After working on the G,  years passed by and Kenin reached out to us having purchased a 2018 Infiniti Q50S sedan. He saw that we were working with other customer’s Q50s and asked if we would be down to tune his. We happily obliged, especially since Kenin’s Q50 was rear-wheel-drive.

 

Straight from the factory, the VR30DDTT is an impressive motor. The Hi-Output version is rated at 400 hp and 350 ft-lbs tq, underrated as we have seen with dyno testing. With a few bolt-ons and tuning, even more power can be unlocked from the VR30. Kenin’ Q received several parts from AMS Performance including their AMS Heat Exchanger, AMS Coolant expansion tank and AMS Air intakes. We also intalled his strut tower brace:

 

The new heat exchanger compared to the stock unit and installation:

   

AMS air intakes compared to OEM:

  

AMS expansion tanks compared to OEM:

 

Intakes and expansion tank installed:

 

Rob was eager to tune the Q using Ecutek. Baseline power was 359hp/374tq at the wheels. With the AMS parts and tuning final numbers were 400hp/449tq, gains of +41hp/75tq:

 

Enjoy the Boost Kenin!

Special thanks to Seb at SpecialtyZ for helping us!

 

  

The Stillen supercharger kit for the Z34/G37  is an install we are intimately familiar with here at Z Car Garage. Here are two customer cars that got supercharged and tuned for nice power gains while maintaining CARB-legal status.

 

Vince’s 2012 G37

 

Vince hails from SSF and heard about us from friends with Z’s and G’s. He wanted us to install the Stillen supercharger kit and we added our favorite upgrades like the the Concept Z performance 25-row oil cooler.

  

Vice had upgraded clutch/flywheel that was really hard to drive on the street. We fitted him with a JWT clutch/flywheel and the troublesome internal slave cylinder was switched to an external unit using the CMAK upgrade from Z-speed.

  

With the supercharger installed we started the tuning process.

 

A relatively new approach, we move away from the stock MAF system and use ECutek tuning with a MAP-based system. Final numbers were 407hp//321tq to the wheels:

 

Thanks Vince, Enjoy The Boost!

John’s 2011 370z

 

John has been a ZCG customer for 10 years and we used to work on his S30. He came in for a Stillen supercharger install on his 370z and added the Concept Z 25-row oil cooler and Automatic transmission cooler.

 

After Rob’s tuning session on the dyno John’s Z made 407hp/300tq to the wheels:

 

Being a base model, an LSD is next on John’s list. Enjoy the Boost!

 

 

Z Car Garage is proud to offer a CV axle conversion kit for your Datsun S30 and 510. We have sold over 100 sets of axles globally, with customers installing and enjoying them on everything from street cars to full-blown IMSA racers. These CV axles will help transmit power to the ground and ensure smoother operation compared to your standard half shafts. Full details below:

 

For years we have used aftermarket CV axles that utilize an aluminum adapter prone to loosening up over time. Despite efforts to keep things tight (Loctite, hardware changes) we had to keep an eye on them. We developed a better solution that eliminates the need for aluminum adapters and remains 100% bolt-in like a factory half-shaft.

  

Designed and manufactured locally with KAD Models, the ZCG CV axle kit works in both R180 and R200 configurations.

 

  

These are the beefiest CV axles on the market. They have been tested on the track by our vintage racing customers and also in high hp* street cars (powershifting, clutch dumps, etc.). Each axle has a serial # for peace of mind:

 

The CV axle kit is available now from ZCG for 1595.00 + freight and they come with everything you need to install on your car. Contact us at 408-452-0350 or send Rob an e-mail rob@zcargarage.com to purchase. Installation is just like doing a half-shaft: there is even a marking that shows you where to line up bolts and special hardware:

 

The ZCG CV Axles in action

The video below demonstrates the “looseness” associated with aftermarket CV axles that use adapters compared to the ZCG axles without adapters. Several customer race/street cars running our CV axles are also shown. Enjoy!

 

S30 and 510s running the ZCG CV axles

 

Randy Jaffe’s #46 BRE Datsun 240z received the very first set of ZCG CV axles: Serial # S30-000240!

 

The Bluebird SSS Coupe and Hakosuka Skyline are both running ZCG CV axles on the race track:

   

Race car driver and restoration specialist Jim Froula of Racecraft is running ZCG axles in several of his cars:

Set #246 – installed May 2018 on the “Harry Stewart #52” Datsun 510:

  

Set #247 – installed April 2018 on the 260z

  

Set #248 – will be installed on Adam Carolla’s “Greg Sorrentino #90” Datsun 510. We are pleased to report that Jim will also be installing a set on his “George Alderman #32” 300ZX! The ZCG CV axles are also perfect for high hp street cars. The following customer cars are all running our CV axles now:

Frank B’s fuel-injected, 6-speed stroker L-series:

  

Gary’s 430whp LS3-powered 280z:

  

Scott W’s EFI stroker L-series:

  

James S’ L28ET:

  

Brian’s 1972 240z:

  

Finally, Gary’s “Behemoth”  OS Giken TC24B1Z powered S30:

Technical Information:

The Z Car Garage axles were designed to help remove much of the backlash aka clunk seen in many older vehicles. Modern technology has given us the ability to create a set of axles to exacting standards. We started with a high quality set of CV joints that were found to be the most consistent in both major and minor spline diameters. We then began to design the axle itself to share the same tight tolerances. We are holding a +/- .01mm diametric tolerance on both the inner and outer spline diameters. This gives us the feeling of direct connection between differential and wheel. The axle shaft major diameter was increased to 30MM to give owners a bit of added comfort in knowing the main shafts are stout. Once the axles are splined they are then heat treated to obtain the desired harness. After heat treat the axles are then nickel plated to add corrosion resistance. The inner and outer flanges are made from 316 stainless steel and mate to the CV joints with tapered alignment surfaces to ensure concentricity is maintained throughout the axle thus reducing vibration. The inner flange attaches to the stock R series differential utilizing the Nissan factory hardware. The outer flange attaches to the driven stub with bolts specifically designed and manufactured for the Z Car Garage axle installation kit. These bolts are manufactured to grade 12.9. All ZCG axles are manufactured locally which helps us maintain the fitment and quality we require.

Materials

Axles : Hardened AISI/SAE 4340 Alloy Steel, 4340 is a nickel-chromium-molybdenum alloy steel

Drive flanges: 316 stainless steel, Type 316 steel is an austenitic chromium-nickel stainless steel

Outer Flange Bolts: Hardened 4140 Alloy Steel , AISI or SAE 4130 grade is a low-alloy steel containing chromium and molybdenum as strengthening agents

 

 

At Z Car Garage we love keeping Z’s on the road. From concours-level restorations to light refurbishments, making a customer’s goals reality is our passion. Richard Y’s 1970 Datsun 240z is a great example of an S30 that has been maintained and restored by us for over a decade. We met him years ago when Rob was working at Scott Performance. In 2004, when we bumped into Richard at Tan’s car wash in Santa Clara he didn’t realize that Rob stayed local, opening ZCG. He brought his Z to us thereafter and we maintained it for the last 15 years.

 

In addition to being a great person and a working professional, Richard daily-drives this Series 1 240z. He is also a purist of sorts, not wanting large wheels and tires, a high-power engine or fancy brakes. His desire is to explore, drive, love and touch the Series 1 car as it was back in the day. In 2011 Richard decided it was time to give his Z some love, and the refurbishment was performed with his “vintage” preferences in mind. A few ZCG touches were added along the way.

Interior

 

Part of enjoying the daily-driving experience comes from a functional, pleasant interior. The dash was previously covered with a cap, having multiple issues underneath. We removed the dash and had it re-conditioned by Dash Restoration:

   

While the dash was out we refurbished the entire heater assembly. The heater core was cleaned and pressure tested.

  

All duct-work was resealed to allow full HVAC function including defrost at max settings. A Honda fan upgrade allows faster air flow and all cable/actuator linkages were re-done:

   Heater /motor back in place:

 

We finished restoring the HVAC by getting the vintage A/C unit functioning again. New condenser and lines:

  

Once the new dash returned we started re-assembly. All hardware was replaced and gauges were tested for proper operation:

   

A host of rare, NOS factory parts from Rob’s stash helped complete the dash. Series 1-specific parts like the map light trim and coin-tray were broken:

 

The NOS coin tray and map light trim installed:

  

We updated the sound system with a modern head unit and hatch speakers:

 

One of our favorite upgrades to the interior of an S30 is our ZCG sound deadening package. Usually found in our full-blown ZCG restorations, the result is a less tinny sound and almost Germanic-like “clunk” when you shut the doors.

   

Full weatherstrip replacement on the doors, hatch and windows. We also ensured that windows travel up/down smoothly:

  

The finished interior. Ready for Richard to ready enjoy daily driving:

The Z Must Go On

Our man William did some light paint work on car, as this was a “light” restoration and we didn’t want Richard missing his Z for an extended period.  Unfortunately in 2017 the Z suffered from a front end impact.

The car was hit bad enough that the appraisal house, Richard and all of us thought the car was totaled. Rob luckily had just acquired a Series 1 car as a donor. The front end was grafted on and William fabricated a new radiator support and front fenders to make car whole again.

Engine Bay

 

Fresh from paint and with the engine out we focused on making the bay look sharp. All hydraulic lines were plated with new NOS brake and clutch master cylinders, distribution block and booster:

  

New heater hoses, plated fasteners and new rubber isolators:

  

The radiator was upgraded to a Koyo Race unit:

 

The drivetrain itself received minor refreshing including new drive belts, overhauled and tuned SUs, and a new clutch/flywheel backing the factory 4-speed transmission:

 

A few more details and the engine bay is complete.

 

Chassis/Suspension

Although we looked at every nook and cranny nook on this Z we always kept in mind that Richard did not want everything upgraded. He lives and breathes Vintage Z. The suspension was replaced front and rear with NOS parts like new factory ball joints, steering rack bushings, etc. More pictures in the gallery!

   

Eibach springs with Tokico Illumina struts:

 

The rear diff was cleaned up:

 

The brakes were restored to factory spec with upgraded Stoptech slotted rotors and our favorite 309 pads:

  

The rear drums received new wheel cylinders:

  

Since the harness was damaged in the accident we used one from the Series 1 parts car.  All connections were degreased and cleaned, resistance checked and finally 3M wrapped.

  

The entire fuel system was gone through. Here we drop the fuel tank, boil it out and replace all rubber lines. Also visible is the ZCG exhaust system:

  

Exterior

 

The exterior had to look as good as the engine bay and restored interior. All chrome pieces like front/rear bumpers and door handles for straightened and re-chromed.

   

All of the stainless trim was straightened and polished. Shown are drip rails, all window frames, turn signal frames

  

Window and door hardware plated including latches. Re-chromed handles:

  

Little details like factory Nissan wiper blades and a NOS mirror finish the vintage “look” we all cherish:

   

 

NOS wipers:

  

Tail panel assembly:

  

A variety of NOS parts like Euro front turn signals and a full set of emblems adorn the Z:

  

Series 1 pillar emblem:

  

The final touch: 15″ 5-slot wheels offer more tire choices while resembling the classic 14″ size slots:

 

 

Ready to Enjoy The Ride

 

With a nice interior, paint and chassis work Richard’s Z is ready to be enjoyed on a daily basis. As long as you have the parts and the passion Z Car Garage will do all we can to keep Z cars on the road. Enjoy The Ride, Richard!

 

  

…[read more]

 

We tuned Maximus’ 2014 370z on his last visit to ZCG with gains of 30whp using bolt-on parts. Power can be addicting, and soon Max told us he was ready for boost. We chose the Stillen supercharger kit for its CARB-legal status and straightforward installation.

 

With only 28k miles on the odometer we installed the Black Edition Stillen kit and our standard ZCG supporting mods like a Concept Z performance 25-row oil cooler and automatic transmission cooler. A few pictures of the installation:

    

The completed supercharger install:

 

Max’s Z had an open diff so we did installed an OS Giken limited-slip diff and gearset from the 370z 6spd MT:

   Hotchkis front/rear Sway bars:

  

On the dyno, Rob performed an ECutek tune yielding 383hp/304tq to the wheels:

 

Enjoy The Boost, Max!