We enjoy helping Z cars owners get their cars in top shape to Enjoy The Ride. David P purchased this 1975 Datsun 280z on the East Coast and the exotic shop it was at had difficulty with it. David moves between San Francisco and Massachusetts and wanted us to sort his Z out before hitting the roads here. Our Z Car Garage Big-Brakes and Z Car Garage CV Axles along with tuning and aesthetic upgrades transform this Z.

 

Affectionately called “Triple Six”, the Z arrived at our shop from the East Coast via Masney Auto Transport (Thanks David). David had not seen the Z in person yet since purchasing and it needed some attention, Z Car Garage style.

 

The car was not running upon arrival and Rob had many suggestions after the initial assessment. From David:

“When Rob called to tell me that my car had made it there I said ‘Ok great. Can I tell you what I want done?’ to which Rob replied ‘Nope’. He said ‘I want you to come down here, drive my car and then say to me, OK I want you to do to my car whatever it was that you did to yours’, and after driving his car I did say those exact words.”

ZCG Big-Brakes and CV Axles

 

Indeed, we had David test drive “Mrs. Butters”, our 1971 Series 1 240z shop demo car with full suspension and our ZCG Big-Brakes:

“I drove Rob’s unassuming, Safari Gold 240Z, that he appropriately named Butters, and God damn was it fun! I was surprised when he told me it had 275 horsepower, not a small number for a car that’s so small and light, its just that it felt much more powerful than I ever thought a sub 300 hp car could feel.”

 
After the test drive he was sold on our Z Car Garage Big-Brakes and Z Car Garage CV Axles! Butters has a way of doing this to our customers 🙂 Read below for a brief description of these parts:

     

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 engineers at 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 some 14″ wheels) 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 David’s brakes and installed our ZCG Big-Brake kit. Up front:

    

 

At Z Car Garage we have been maintaining and modifying late model Nissan/Infiniti sports cars since 2004. From Z cars (Z32, 350z, 370z) and R35 GT-Rs to G35, G37, Q50/Q60 cars we look forward to working on your vehicle. Efrain S visited us from Sacramento with his 2019 Infiniti Q60S Silver Sport for basic performance upgrades from AMS Performance including their AMS Heat Exchanger and AMS Air intakes and a Z1 Motorsports Blow-off Valve kit:

 

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

 

AMS air intakes:

  

Z1 BOV Kit with red couplers:

    

Dyno Tuning

 

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. Rob dyno tuned the Q using EcuTek. Baseline power was 333hp/314tq at the wheels. With the AMS parts and tuning final numbers were 412hp/452tq, gains of +79hp/138tq:

 

The VR30-series responds so well to bolt-ons and gets us excited. It’s almost like Nissan has comeback full-circle as the VR reminds us of modifying Z32TT’s in the 90’s:  big gains with just few upgrades. The Q-series cars are really well-suited to the upgrades too with a very comfortable ride and massive hp/tq when you want it.

Here is the Q on the dyno:

 

Efrain was very pleased with the power gains:

 “Honestly man my experience with Rob from start to finish was amazing. I could tell he loves his job, loves what he does and energy was on 100%, 7 days a week. Once I got the results back from the tune I was blown away I thought I was maybe going to see about 400 horsepower to the wheels at the most and he got it over to 412 with 450 torque, I couldn’t believe it. My bolt-ons are flawless, could not be anymore happy with the work from you guys and the whole experience I love the car thank you guys.”

Enjoy The Boost Efrain!

Are you ready for upgrades on your late model Nissan/Infiniti? Give us a call or e-mail!

 

 

 

Last week we had the pleasure of dyno tuning Eric Straw’s magnificent 1969 Datsun 2000 Roadster. Eric is a long time friend of Z Car Garage and we  first dyno’d this roadster in 2012 while a few years later we enjoyed tuning his RB26DETT powered DR30 Skyline. In addition to being a talented fabricator it is clear that Eric has a penchant for white paint, red valve covers…and turbocharged Nissan powerplants!

 

SR20 Roadster: Version 2

 

After restoring his roadster with an S13 SR20DET drivetrain a decade ago, Eric started working on the next evolution with a totally revised chassis and new engine (the previous setup sold for a customer’s roadster).  The new drivetrain consists of an S14 block (JE pistons, K1 rods, P12 oil pump) with a P11 VVL head (Kelford turbo cams, Tomei cam gears, Taarks VVL relocation kit, R35 coil packs) all mounted to the roadster frame using a Spriso Motorsports HD motor mount kit.

 

Providing boost is a GTX3071r turbo with Tial exhaust housing mounted to a Straw-fab’d custom tubular manifold with CNC 1 piece collector. On the cold side is a custom intercooler with Garrett core and custom intake manifold. It’s both pretty and functional considering the roadster’s tiny engine bay:

 

Backing the SR20VE-T is a 6-speed (CD009) transmission normally seen in the Nissan 350z. The SR mounts to the tranny via a Mazworx bell housing with an OS Giken Twin disk. The shining star in Eric’s craftsmanship is the chassis preparation with a heavily modified frame with tubular x-member and bolt-in reinforcements.

 

It would take another blog post to dive into the suspension but if you are curious about the restoration and more please check out Eric’s roadster featured in this Speedhunters article by Naveed Yousufzai HERE.

  

Dyno Tuning

 

The tuning session was conducted with driveability and longevity in mind. Outright peak power numbers were not a priority. Eric’s hometown in Salem, Oregon is where this car would be enjoyed with premium fuel and the occasional 100 octane splash.  Surely more power could be extracted with E85 but Eric is 50 miles from nearest station. Rob comments on the choice of engine management for the SR20VE-T:

“When Eric contacted us about about building the SR20VVL we discussed EMS, and ZCG is a Haltech Pro Tuner. We really like how user-friendly this product is for a tuner. It’s perfect when you need to map out all of the different phases, complete control of ignition/fueling, cam control, idle air…everything to take this car you’ve dreamed of and make it drive like it came from an OEM factory.”

 

Rob dyno tuned the SR equipped with a Haltech 1500 Elite. Initial passes were performed on 92 octane. The plots below show without a boost controller (387hp/287tq) and with a boost controller, making 425hp/331tq to the wheels:

 

Of note is Nissan’s wonderful variable valve timing (VVL) at work with a very flat torque curve and incredible, spine-tingling cam changeover sound. See video below! Eric and Josh drained the fuel tank to add 100 octane for the next passes.  Fueling is supplied by a custom stainless tank (Aeromotive hangler/bladder), custom stainless lines all dash 6, 1300x Injector dynamics and a Radium Fuel rail:

 

On 100 octane the SR20VE-T made 491hp/393tq at the wheels. That is roughly 570hp at the crank. Keep in mind this little Datsun roadster weighs 2250lbs with a hardtop and 14 gallons of fuel!

 

Driving Impressions

 

Following the dyno session we had to take the roadster out for a drive. This video shows multiple dyno passes and test drives, volume up!

 

 

Here are a few driving impressions from the three of us, enjoy!

Eric

“The car went from being an impressive car to completely coming alive and becoming a rocket ship that just keeps pulling. The VVL is like another level of performance. The power comes on very progressive and linear to give the chassis the best chance of getting as much as possible out of it. We made multiple setting to help with driving goals based on the roads and situations we are in.”

 

“The suspension has been a lot of work and has really paid off many times over be able to get this power to the ground and drive the car like it was intended. The rear suspension is so predictable and precise that immediately I had a lot of confidence to be able roll some power out of the corner. Rob had truly made this dream come alive and make this car so very impressive.”

 

Rob

 

“The cam control and air flow from the VVL is staggering, just really super cool. I’m not surprised…from being around the DR30 and seeing all the cars Eric and Michael Spreadbury have built over the years.  This roadster continues to evolve as they continue their craft with each chapter revealing a new level like a boost controller: 5 years ago was 10lbs of boost, 2 years ago 12lbs,  and now 22lbs (this roadster should only be driven on high!) Eric Straw isn’t just one man. He seems to be a mass of people to not only design an engine bay and make it work efficiently but also bolt a non-matching transmission, and then that rear end suspension….obviously one of the biggest things when modifying a 50+yr old Datsun with high power levels is trying to put it down. His engineering accounted for enough tire, brake and balance. The setup Eric built for this roadster I could not believe how we could deliver 500+hp/almost 400ftlbs of torque, and yes we were lighting off the tires but…I still felt like I was in control. We were on ice, but I felt like I was on Speedvision from back in the day of World-rallying Championship..with just a slight motion of the steering wheel I could rotate that car wherever I wanted. 

 

Alvin

 

“As a passenger and long-time roadster owner…it’s not easy for me to ride shotgun in a high-powered car but I still can’t fathom how smooth it felt under intense acceleration. These are super tiny cars and to see both Eric and Rob harness it was a testament to Eric’s chassis engineering. I’ve been in other Datsuns with turbo SRs and they will pitch sideways under full throttle but this one was planted even on our rough downtown roads. Watch the video. It’s epic.”

 

All of us concluded and shared similar sentiments: Eric’s suspension enabled this roadster to manage all that power. When boost hits and the tires break loose it can be seemingly glide controllably with steering input…no hopping or skittering. The rear suspension consists of a hybrid rear axle built by Moser based on a Dana 44 with a Torque arm and 3-Link Watts with Ridetech coil-overs. Up front are custom Ridetech coil-overs and sway bar.  R33 GTR Brembo brakes provide stopping power. The Watanabe wheels are wrapped in 225F/245(!)R tires which are massive for a stock-flared roadster body.

 

We had blast spending the day with Eric and tuning his roadster. We can’t praise him enough for the ingenuity and execution of his build. Eric would like to thank Julie Straw, Michael Spreadbury and Rob Fuller.  More pictures in the gallery below and Enjoy The Boost Eric!

 

 

What sparked your interest in Z Cars? For Scott W it began when he was about 15 years old, and eventually led him to Z Car Garage:

“My best friend’s brother’s friend had a silver 240z. He would take us to lunch and we had to lay down in the back. From that time on I wanted a Z! I started reviewing zcarblog.com and found a very nice 260z for sale that was owned by an older retired couple. Based on all the work performed by ZCG I met with Rob and I purchased it. The 260z was originally gold with the 5mph bumpers.”

 

Indeed the gold 1974 260z was our very own customer Geri R’s. When she retired and moved to San Diego she told Rob, “If you are not in SD my Z car can’t come with me…please find it a new home.” Scott W visited ZCG in 2013 and purchased the Z, well before the S30’s garnered high prices! He had a very clear vision of building the ultimate Z Car:

“I told Rob my plan was a car that was great to look at but I’m going to drive it! And drive it hard. My goal was to keep it looking 1974-ish on the outside but modern under the skin.”

So we began the process of upgrading an already solid, clean chassis that Geri lovingly maintained.

Drivetrain

The first item we discussed was the engine. Scott wanted more power and Rob suggested a Rebello 3.2L Stroker engine. Supporting parts included an MSA 6-into-1 header,  ZCG exhaust system, KOYO race radiator (custom upper hose) and ZCG heat shield. A few pictures of the engine build/installation with many more in the gallery:

 

Induction is handled by Jenvey individual throttle-body fuel injection, managed by a Haltech Elite 750 standalone system.

 

A NISMO Competition oil pan was installed to cope with high cornering loads from road course driving. Also shown is the Nissan 240sx 5-speed transmission. This “KA24” unit is significantly stronger than early S30 transmissions. It handles the 3.2L’s extra power, and we offer this conversion to customers.

 

When we upgrade the transmission we also install a JWT HD clutch with aluminum flywheel. Helping put the power down efficiently is an OS Giken LSD. The R180 houses a 4.11 R&P and the assembly is setup in-house (by Joshua Corwin). Rounding out the drivetrain upgrades are a set of ZCG CV Axles(shown below)

 

The ZCG Exhaust system using 2.5″ piping to a stainless resonator and Magnaflow muffler with slash-cut tip. Listen to the sound in the video below!

   

The completed engine bay. All hoses, hydraulic lines, fittings etc were removed and restored/replaced with new parts. Zinc plating hardware throughout:

 

On the dyno, Rob tuned the Z with the Haltech making 257hp/229tq to the wheels. An improvement from the stock 121hp/130tq:

Chassis

 

Suspension upgrades were next, focusing on the ideal setup for open track days while remaining comfortable on the street. Scott outgrew the Tokico 5-ways and now has Koni Yellows with our Ground Control coil-over setup from back in the day. Techno Toy Tuning control arms, T/C rods and more complement the total suspension restoration. All parts were powdercoated and hardware plated.  We really appreciate Gabriel at T3 and his staff. They make some of the best suspension parts out there for Z cars.

 

Panasport Wheels

 

Custom sized 17×9 Panasport C8 wheels allow us to run a wide 255/40/17 tire at all four corners, without flaring the fenders:

 

Bridgestone RE-71R tires are shown below. The 17″ diameter wheels also give clearance for our ZCG Big Brakes!

  

ZCG Big-Brakes and CV Axles

After driving our customer Lou’s Fairlady, Scott was sold on our Z Car Garage Big-Brakes.

  

Not to be confused with our familiar Z Car Garage Big-Brakes (for small wheels) that we currently offer, this Big-Brake kit was our initial setup from many years ago. Our first collaboration with Stoptech, this 328mm sized kit requires 17″ diameter wheels and the massive ST-42 calipers are finished in bright red. This kit was installed on our OS Giken TC24-powered 240z and a few other customer cars.

 

 

The ZCG Big-Brakes framed nicely behind the black-spoked C8s. We are currently re-vamping this kit using Stoptech’s latest ST-43 caliper.

    

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.

   

Scott’s 260z received ZCG CV Axles set #250

  

More pictures of the ZCG axles installed, also visible are the T3 control arms and ZCG exhaust system:

  

Comfort

 

Scott’s 260z had an interior in fair shape. We gave it the full ZCG treatment with a refurbished dash, new carpet and creature comforts like Bluetooth, radar detection and functioning HVAC. In-progress shots below with more in the gallery:

 

New carpet throughout, integrated speaker box in hatch:

 

The stock seats were in bad shape Scott was sliding around on them so we upgraded to leather Recaros. Perfect for keeping him locked in place during track days.

 

The heater system from core to blower was completely restored:

 

Full A/C setup using a smaller Toyota compressor with existing A/C parts:

 

Performance

 

Balance. This Z has power and the chassis upgrades to transform it into a well-rounded sports car. Remember Scott’s goal of building the Z to drive really hard? He has been taking his S30 to Buttonwillow Raceway every month, putting our ZCG products to the test on the track.

 

Enjoy the sounds of Scott’s Z in this short video below:

 

 

Exterior

 

You didn’t think we would forget to mention the total paint color change, did you?  About six months into his build Scott called to request a color change from gold to a Mercedes-Benz shade of Gun Metal. Our man William painted the body, retaining all side-markers to maintain a stock look:

 

Scott however was adamant about changing the stock impact bumpers. Rob located Euro-style 240z bumpers and had them sectioned/re-chromed:

 

Thank you Scott for letting us build your Ultimate Z Car! We are proud to see you enjoy it on the track and street.

LONG LIVE THE Z!

More pictures in the gallery below!
…[read more]

 

Keith Y came to Z Car Garage for dyno tuning on his Datsun 510 “Brock Buster” tribute. This Dime was a complete build performed by our friend, fellow racer and Datsun guru Troy Ermish.

 

Troy’s restoration of this car was fantastic and we love the 13″ Libra-style VTO with white-letters-out tires:

 

Underhood lies a Rebello 1700cc L-series with dual-Mikuni carbs and the chassis treated to a host of Troy’s suspension goodies:

 

When Keith brought the car to us it was not running correctly. Baseline numbers were 94hp/106tq. With Rob’s tuning the L-series now screams past 7ooorpm, making 125hp/114tq to the wheels. Gains of 31hp/8tq!

 

Enjoy the L-series music on the dyno, we included both engine and exhaust points of view:

 

Keith is happy and we are impressed (as always) with another Ermish creation. Coincidentally, the original real-deal Brock Buster 510 is being restored back it former glory as we speak at Troy’s shop! Looking forward to seeing it on the road.

DO IT IN A DATSUN!