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

“Since then, Rob has been super helpful while I’ve been restoring my 1970 Datsun 1600 from connecting me with the engine and transmission rebuilders, to helping with parts restoration, zinc plating, advice, and moral support. Once I had the car assembled and the new engine broken in, I knew I wanted to get it tuned on the ZCG dyno.”

Dyno Tuning

 

Erik’s roadster is a “1600” model, originally sporting 1.6L (R16) with dual-SU induction and 4-speed drivetrain. His restoration included stroking the original motor to a larger 2150cc displacement with twin-Mikuni induction and 5-speed (u20) transmission. You can learn more about Erik’s restoration efforts and the Rebello stroker R16 drivetrain all on 311s.org HERE.

 

Our initial dyno tuning session was with Phh40 Mikuni carbs. While it made great power Rob had always suggested running a larger Phh44 carbs to take advantage of the stout Rebello cam. Erik returned for another dyno session. With the carb switch, A/F ratio and timing optimized the roadster put down an impressive 157hp/151tq to the wheels with improved driveability throughout the entire rev range:

   

Erik was stoked with the tuning results:

“After finding some compatibility issues with my carburetors, Rob helped me build and install bigger carbs (the ones Rob had told me to use all along!). Came back for another tuning session and wow – what a difference. More power everywhere, better idle and driveability, and top end power is phenomenal. Many thanks to Rob and the whole Z Car Garage crew for taking my car from good to amazing!”

Enjoy this video of the roadster being dyno tuned and road tested, volume up!

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

Enjoying The Ride

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:

 

Erik has been attending local car shows and rallys including VALT Car show in Berkeley, CA and Breakfast Club Rally.

 

We had fun tuning Erik’s roadster and getting it dialed in with the new drivetrain. Eventually it will be time for bodywork and paint, but he’s too busy having fun on the road! Thanks for letting us be a part of your Datsun journey Erik, you’ve done the roadster justice! If you have a vintage car (it doesn’t have to be a Datsun) feel free to contact the shop to schedule a dyno tuning session. More photos in the gallery below.

 

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On Sunday 7/31 we attended the Morning Motors Cars & Coffee event hosted by DrivingWhileAwesome (DWA) in Santa Cruz, CA. The event impressed us again with a fun vibe and superb variety of cars. One of the many perks of DWA Morning Motors is its location surrounded by the best driving roads.

This morning’s pre-event gathering met at Alice’s restaurant at 8am. Our group started with 4 cars including Rob (Porsche 993 Turbo), Josh (VW bug), Kurt (Subaru 2.5RS) and myself in the Z Car Garage 1967 Datsun 2000:Our brisk run up HWY 9 was amazingly traffic-free and plenty of room to enjoy the twisty bits. A brief pause at the 9/35 junction to meet Nick in his Datsun 510 Wagon:

We joined our friend Naveed (thanks for organizing!) and few other enthusiasts at Alice’s. Below, Mark’s 1971 Datsun 510 and Erich’s1974 Alfa GTV give off B-Sedan vibes in the am light:

After re-connecting with friends we headed to the Santa Cruz via 84 and HWY1. The lot in front of the Old Wrigley building was near full a few minutes after 9am.!

 

Mandatory Nissan/Datsun

I was happy to see so many Nissans and Datsuns at Morning Motors.

It was a real pleasure to see Rick’s 1965 Nissan Silvia, driven by his son Matthew!I had a blast driving this RHD gem on the strongBreakfast Club Rally back in March:

This R33 Skyline GT-R was recently acquired by DWA co-founder Art C our friends at Toprank International Vehicle Importers. Super stoked for Art and glad to see him enjoying it! Love the BBS LMs!

Datsun B210!

There were several S13/S14 240SX sports cars, G35s and a Z33 on WORK T7R 2P wheels:

 

Another ZCG client, Eric’s Infiniti FX35 sporting upgraded suspension and R35 GT-R wheels. Parking next a mint 2003 FX!

 

In Search of J-Tin

Morning Motors did not disappoint if you are Japanese Classic fans. Representing Mazda was our friend Tony’s 13B-powered RX-2 and his Rotary gang:

  

90’s icons…Third gen (A70) Supra and FD RX-7 (on ADVAN wheels)!

 

Euro Classics

Yearning for Porsche’s? Or something a bit less “mainstream”? DWA CnC did not disappoint. Citroen 2CV:

Porsche, Alfa and Austin Healey

  

Lone E38 7-Series BMW…peak 7 in my mind!

My favorite car was this Porsche 914-6:

American Muscle

From 60’s to 80’s. Mike Garret’s familiar purple Mopar with late-model drivetrain and really wild Ford Coupe with diesel engine:

DWA CnC is definitely my kind of cars and coffee. It’s a great venue with amazing driving roads nearby and the cars were so diverse. We highly recommend checking it out! Thanks to the DWA crew for hosting. If you haven’t already, listen to their podcast and make sure you give them a follow on Instagram.
More pictures in the gallery below!

Nick K has been coming to Z Car Garage for several years. He makes the trek all the way from Sacramento and we’re proud to be the only shop that gets to work on his 2004 G35 Coupe. In 2012 we first met Nick, UPREV flashed his car and performed routine services.  He had daydreamed of one day doing a supercharger kit.

A year later Nick K’s engine was tired. With 209k miles on the clock he dropped the G35 off at ZCG in preparation for a fresh start and…boost!  We removed the ailing VQ35 engine and installed a complete VQ35 from a customer who wrecked his car with 50k miles on it:

With the engine out it was prudent to install a JWT HD clutch/aluminum flywheel. We did a Vortech tuner supercharger kit using our recipe of 1000cc injectors, GT MAF, and Aeromotive 340 fuel pump. To keep everything cool in Sactown heat we installed a 25-row oil cooler. In 2013, Nick was on his way with a new engine and boost, enjoying a nice 140hp/105tq bump in power for a total of 386hp/334tq to the wheels:
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Gustavo L has been bringing his 2004 Infiniti G35 Coupe for bolt-ons the last few years. His first visit was for a Motordyne plenum spacer and UPREV tune. Last May, Gustavo came back to ZCG with a plan for more new parts including a full exhaust system, ART pipes, 60k service and a TransGO shift kit.

Motordyne exhaust:

 

Firmer shifts on this automatic with the shift kit:

 

Quicker acceleration with shorter gearing courtesy of Z1 rear diff. Gustavo purchase an entire assembly from Z1 and we installed it with Whiteline diff bushings”

We performed a re-tune with UPREV and saw gains of 19hp/10tq for a total of 247hp/233tq to the wheels.  Power is increased throughout the entire rev band:

Gustavo brings his car from Watsonville which is a bit of a hike but totally worth it for the power of ZCG! He is stoked and Enjoying The Ride!

Daniel M came to ZCG to add a few touches to his commuter: a 2007 Infiniti G35 sedan. With 69k on the clock we installed a Stillen Gen. 2 cat-back exhaust system, UPREV tuning and Hotchkis sway bars.

Before/after of the Stillen cat-back exhaust system:

The exhsust looks and sounds great:

UPREV tuning yielded gains of 9hp/7tq to the wheels:

Enjoy The Commute, Daniel!