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Ole Orange Bang: Larry Chen’s 1970 Datsun 240Z

Filed under: 240z,Featured Cars and Projects,Performance
by Alvin G @ 5:10 pm on December 10, 2021

 

Performance With Passion”These are words that describe our work at Z Car Garage and we are passionate about making your Z perform as good as it looks. Photographer Larry Chen commissioned ZCG to transform his beloved SR20DET-powered 1970 Datsun 240Z from an “ok driver” to a no-excuses, multi-dimensional sports car with power, handling, braking, comfort, reliability and performance to match its eye-catching beauty.

 

Join Rob and Larry as they share the story of Larry’s Z, affectionately called “Ole Orange Bang”, featuring our Z Car Garage Big-BrakesZ Car Garage CV Axles, chassis preparation, dyno tuning and more. Enjoy the videos with behind the scenes footage and photo gallery below!

 

Build History

 

Car enthusiasts and motorsport fans recognize the name Larry Chen as the greatest automotive photographer. Larry has made a career out of his passion for capturing the right moments in racing. We are huge fans of his work since the days of covering Formula Drift, time at Speedhunters, and recent work with Hoonigan Autofocus. Our favorite Larry Chen moment is his photography of Ken Block’s 1400hp Hoonicorn at Pike’s Peak for the filming of Climbkhana.

 

Larry Chen is regularly exposed to some of the coolest builds across the globe, so you can imagine our joy hearing that Larry’s personal car is a Datsun 240Z. Larry’s Z is a Series 1 (VIN# 2868) that he purchased on his 21st birthday for $3000. He started autocrossing immediately with his buddies circa 2006, and it became an integral part of his life:

 

“It’s been such a big part of my adult life, and it will continue to be a part of it for the rest. The name actually came from a Mexican drink that we love in SoCal. My car is Orange and it backfired a lot when I got it especially when I was low on gas. So it was only appropriate to call it Orange Bang. On my wedding night instead of being ferried away in a fancy limousine, I drove my beautiful wife home in the Z, after some wedding burnouts.”

 

Following years of autocross and track use, in 2013 the tired L28 was replaced with an SR20DET straight out of a former Formula Drift car.

 

Like many enthusiasts, Larry continued to modify and upgrade the Z to fit his needs…adding A/C, coil-over suspension and creature comforts along the way. We spotted a freshly painted Ole Orange Bang at the 2019 Japanese Classic Car Show:

“In 2019 my friends at Bells and Vaughn in Pasadena, California did a full ground up restoration. It has all new paint and it was taken all the way down to the metal. Just this month I picked it up from Z Car Garage in San Jose California. ZCG pretty much went through the entire car and they fixed everything that was mechanically wrong with it.”

 

When Larry Met Rob: A ZCG Story

 

We first met Larry when he visited us at the 2018 Japanese Classic Car Show in Long Beach, CA. We talked about Z cars, and how he really wanted to get our Z Car Garage Big-Brakes and ZCG treatment on his personal Z. In 2020 he trailered his Z up from LA to ZCG in February, literally a few weeks before the pandemic.

“I actually found out about ZCG on Instagram and met Rob for the first time in SoCal at JCCS. I inquired about getting brakes for my car since it couldn’t stop even with a Toyota 4×4 conversion and Nissan Maxima rear disk brakes. They were absolutely horrible. There is a reason why people ship their Z cars across the country to ZCG. The passion is there and you can see it on everything they touch.”

While visiting Z Car Garage Larry featured a few of our client cars and did a shop tour for his YouTube channel Hoonigan AutoFocus. You can click on the thumbnails below to watch the videos:

 

Fast forward a year later and Larry returned to pick up his beloved Z. He shot a few more vehicles like my my 1967 Datsun Roadster and Randy’s 1970 Salt Flat Racer but most importantly Larry finally filmed a 1hr-long Hoonigan Autofocus episode of his own Z, Ole Orange Bang. Larry was so happy with his Z he recorded a separate lock-down video for our friends at Haltech.

 

We couldn’t leave our readers hanging without our own ZCG-style feature complete with dyno videos and behind the scenes footage, so if you can’t wait any longer here it is below. Turn those speakers up and enjoy, read on for an in-depth look at our work.

The ZCG Touch

 

Larry and Rob developed a plan for Ole Orange Bang. The Z had past work performed by many folks including Larry’s buddies. We simply wanted his Z to be a multi-dimensional sports car with power, brakes, handling and comfort. Cosmetics were already handled, it just needed some mechanical love with ZCG-products that you will find on many of our ZCG builds. Let’s begin with the chassis upgrades, then go into dyno tuning/engine bay work and final details like the interior and weatherstripping.

ZCG Big-Brakes and CV Axles

We handed Larry the keys to “Mrs. Butters”, our 1971 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 clients 🙂 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 Larry’s existing Toyota 4×4 front calipers and rear Maxima setup and installed our ZCG Big-Brake kit front and rear:

 

He got a new, OEM brake master cylinder as well:

 

At the rear, the Maxima setup was replaced with our ZCG Big-Brakes. Factory handbrake functionality IS retained!

 

Larry was impressed with the braking performance:

“The ZCG brakes and axles really give the 240z an update with modern top of the line performance where the Z badly needs it. These cars are lightweight and easy to make fast, but everything else that goes along with it is very lacking. While the 240z is a great car to drive in stock form, there is nothing like having a lightweight turbo rear wheel drive sports car.”

Z Car Garage CV Axles

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 140 CV axle kits on customer cars and we are stoked with all of the positive feedback.

 
 

Larry has CV Axle set #328. Stock half shafts (L) and ZCG units bolted in to the Subaru STi LSD diff. The stock suspension parts had been long replaced with Techno Toy Tuning parts. Larry does not have to live with those loose CV axles anymore!

 
 

More pictures of the ZCG axles installed, we will discuss the KW coil-overs below:

   

Wheels By Love20bee

Complementing the new Big-Brakes and suspension on Larry’s Z are a fresh set of Southern Ways Epsilon mesh wheels from Love20bee. It was an absolute pleasure working with owner, Matt K. to adjust the offset on the wheels just before Larry picked his Z up from ZCG.

 

We wanted Larry to be able to use the KW Suspension and ZCG Big-Brakes to their full potential and put all the power down effectively without clearance issues. The offset was a bit too aggressive causing fender rubbing and excessive camber reducing the contact patch of the sticky Yokohama tires.


Larry’s Z already had a set of KW Coil-overs. Not to be confused with our ZCG-labeled KW Suspension with adjustable rebound and dampening that we’ve developed over several years (releasing soon). We adjusted Larry’s KW’s for best ride and corner-balanced the car using his weight. With the wheel barrels adjusted and suspension aligned Larry can now throw this Z into any corner with confidence. No rubbing, no excuses.

 
 

 

Engine


Larry had a long list of problems he needed resolved with the drivetrain. The SR was running an older AEM standalone setup for racing duty so it would drive roughly on the street: poor cold/hot starting, erratic idling, stalling on deceleration, overheating and the A/C wouldn’t blow cold under hot conditions. Before sorting these issues we cleaned up wiring and hoses in the engine bay. Here is what the cooling setup looked like before:

 

The oil cooler was mounted in front of the intercooler and there was a small deflector plate placed across all heat exchangers. We re-designed the ductwork with help from TCDesignFab to seal the intercooler/AC condenser/radiator to direct air flow and eliminate heat soak. Serious SPAL fans were added to a new Mishimoto rad:

 

The oil cooler was relocated below the FMIC:

 

With air now directed through the heat exchangers the SR operates well under heat soak conditions, even with the A/C on and blowing cold. Even though the SR20 isn’t Rob’s first choice of engine swap it works really well, looks awesome and makes great power. Speaking of looks, we couldn’t resist adding our body-color matching valve cover (like Rob’s 510 and Rb-powered Z cars):

 
 

Hardware was removed and re-plated throughout, more pics in the gallery!

 

Dyno Tuning

We are huge fans of Haltech engine management. We use their Elite line of ECUs exclusively on our EFI engine builds and Larry’s SR received an Elite 1000 unit, mounted on the passenger foot well. Rob dyno tuned the SR20DET using Haltech. Baseline was 245hp/223tq and with Rob’s tuning it made 295hp/277tq at the wheels:

 

Larry was absolutely blown away by the performance, response and night/day improvement in drivability. Beyond peak gains of 50hp/54tq at the wheels, much of the increased response can be seen in the huge area under the curve from proper wastegate operation. Haltech is so user friendly and the benefits are priceless. You can see the dyno runs and road testing with Larry and Rob in this this video.

 

Interior

 
 

After driving our client James Stephens’ turbocharged 1972 Datsun 240z for an episode of Hoonigan Autofocus, Larry knew right then he had to have a set of Recaro seats for Ole Orange Bang. We removed his old seats and installed a new set of Recaro Pole-Position seats. He loves them:

 

Any bodyshop can install weatherstripping but Larry really wanted ZCG do tackle it and we happily obliged. 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. We also refurbished his window tracks to ensure smooth operation:

 

We are really proud of the HVAC system in this Z. Larry mentioned the A/C wouldn’t blow cold..we tested Larry’s A/C after our ducting upgrades and it blows cold even after full throttle applications and heat soak.

Details

 
The little things are what we excel at. A common problem with Series 1 cars is exhaust fumes entering the car through the hatch vents and tail lights. We replaced the hatch and tail light seals and sealed the hatch vents. No exhaust smell in the cabin. (below) It made us happy when Larry called out these little details while filming…an OEM Nissan oil filter and re-plated hood latch hardware:

 

Please check the gallery below for more detail shots, there are too many to list in this blog post!

Enjoying The Ride

 

Larry picked his Z up from Z Car Garage in February of 2021. He immediately started enjoying Ole Orange Bang by driving to various events and gatherings in SoCal. We were so stoked to see him happy with his Z again.

 

Getting updates from Larry was rad:
“It finally performs as good as it looks! Rob and the team are so detail oriented. They know these cars inside and out and my car has never driven so well in its lifetime. I can’t wait to bring it back for some more goodies.”

We were reunited with Larry and his Z at this year’s Japanese Classic Car Show at the Anaheim Stadium. The Z was on display in the Leen Customs booth where fans could get his autograph:

 
 

Orange Bang with FuguZ and Medusa. We are beyond happy to have our Z Car Garage chassis parts on these high-profile Z cars.

 

As happy as we were to see Larry driving around SoCal what really made our day was seeing him drive Ole Orange Bang in anger at a local autocross event! He put our Z Car Garage Big-BrakesZ Car Garage CV Axles, suspension and dyno tuning to work:

“I decided to take a personal day and do a bit of driving for fun. I haven’t auto crossed in almost 15 years. I went to the CornerExit auto-x at California Speedway and it was an absolute blast. Orange Bang held up amazing, and everything @zcargarage did to it paid off. I ended up getting 2nd place in mod class!” 

 

We will have video of Larry ripping through the autocross on our Instagram story. For now, don’t miss the video we made of the Z in action here:

UPDATE 6.30.23

Larry just dropped an amazing video about his Z including its history and canyon driving, enjoy!

Thank You Larry!

Our journey with Larry is just beginning. Thanks for entrusting Z Car Garage with your Z and believing in us. We appreciate all that you do for automotive culture and your work is inspiring. Always Do It In A Datsun and LONG LIVE THE Z!


More pictures in the gallery below:
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Khang D is from Modesto and we first met him in 2012 when he visited Z Car Garage with a green 1975 Datsun 280z. We serviced the car, fixed several items and he enjoyed it for a few years before selling. In 2017, Khang purchased this white 1973 240z from our client Brent B, and returned to ZCG for full suspension upgrades including Z Car Garage Big-Brakes, new OEM mirrors, Panasport wheels and a complete tuneup.

 

It wasn’t long before Khang came back to ZCG with a request for more power to match the excellent chassis improvements. Let’s take a closer look at this fantastic daily driver+canyon carver showcasing our  Z Car Garage CV AxlesZ Car Garage Heat Shield, Jenvey ITB fuel injection, CD009 Six-speed transmission and more.

Suspension

 

In September 2017 we overhauled the suspension. The Z received coil-overs from Techno Toy Tuning including T/C rods and rear control arms. The entire front suspension was re-done with new bushings, wheel bearings, rack bushings, steering coupler, etc.

Struts, OEM T/C rods replaced with coil-overs:

  
 

T3 Rear lower control arms replace OEM units:

120714 Cam 4 098
 

ZCG Big-Brakes

“WOW, what a difference. The feel, modulation, power, sharpness was amazing. Hands down the best brakes I had ever driven on a Z car” -Glenn

As fellow 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 master cylinder change or additional proportioning valve/adjustments, etc. 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:

 
 

Khang’s S30 got the full 4-wheel brake kit with new OEM Master Cylinder:

 

We also installed the fully functioning parking brake that works with factory linkage/handle:

 

 

Khang loves the ZCG Big-Brakes:

“They are a must have and definitely allows the bigger power. Kind of spoiled actually. I’ve recently checked out another 240z and drove it and then hit the brakes and forgot that they were stock and almost ran through a stop sign.”

Engine Bay Services

Khang’s engine bay was painted black so we took this opportunity to paint it body color and perform re-installing the new engine. As usual William worked his magic to apply the white paint while we zinc’d or powdercoated all parts in the engine bay. The before/after is dramatic, no doubt from the new engine discussed below!

 
 
 

New hydraulic lines/plumbing and wiring harness with general cleanup made this engine bay pop:

 

Engine

 

After a year of enjoyment Khang desired more power. We installed a Rebello 3.2L engine with upgraded cam, Harada intake and Jenvey fuel injection. The old SU-fed L-series was removed:

 

We knew the car would be stopping and handling better than before, so we installed a Moroso oil pan and Koyo aluminum radiator to keep temperatures in check. We are using Pacesetter 3 into 2 header ( to clear six-speed) leading to our ZCG exhaust system with stainless resonator and slash-cut tip.

 
 

Jenvey Fuel Injection

We are huge fans of modern fuel injection on the L-series for it ease of operation, excellent hot/cold start behavior, tuning abilities and all-around driver-friendliness. Khang’s 3.2L engine uses an individual throttle-body induction setup from Jenvey. We have used this setup on several builds, including Scott’s 260Z with stellar results.

 

In-progress shots of the throttle body wiring. We mounted the ignition coil on the firewall to minimize clutter. The valve cover was also changed.

 

The fuel injection system is run by a Haltech Elite 750.  The ECU was mounted in the passenger side footwell:

 

Topping the ITBs off are custom, merged mesh air filters. The sound from the Jenvey EFI is intoxicating. More pictures in the photo gallery!

 

We also installed what every L-series needs: a Z Car Garage Heat Shield!

 

Fueling mods to support fuel injection including in-tank fuel pump. The tank was pulled and boiled out/refurbished before adding EFI:

 

Dyno Tuning

Rob dyno tuned the 3.2L via Haltech.  Baseline was 129hp/131tq with the old engine and with Rob’s tuning the 3.2L made 264hp/231tq at the wheels. Watch the dyno run and listen to those Jenvey ITBs scream in the video below!

 

Beyond performance, Khang is very happy with the Jenvey EFI:

“Best thing I can say is I don’t plan to ever go back to a carb setup again. Knowing that it’ll turn on every time and can be on the road for prolong periods of time without feeling like I need a gas mask on. Carbs were tolerable when I was younger but now a days I like the comfort features of EFI.

Driveline Upgrades

We built Khang an R180 rear diff with 4.11 OS Giken LSD, a perfect upgrade for anyone doing spirited driving. All built in-house with new bearings/hardware by our very own Joshua Corwin:

 
  
   
 

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

 

Six Speed Transmission

Next on the update list, we were really excited to install a Nissan 350z 6-speed manual transmission behind the L-series in Khang’s Z. You read that right! S30 owners can now bolt-in this robust, 6-speed manual behind their L-series engine! You might remember our first application of Austin Hoke’s custom 6-speed adapter kit on the OS Giken TC24B1Z-powered 240z, Trevor’s 280Z and Frank’s 240Z:

 
 

Using the 6-speed conversion kit from Hoke Performance we installed a new CD009a transmission from the 2003 -2008 Z33 in Khang’s 240Z:

 
 

Here is the brand-new transmission from Nissan being unboxed:

 

 

The kit necessitated exhaust header changes and after testing a variety of headers we found the Pacesetter 3-2 unit provided enough clearance. Serial 9 provided the shifter relocation assembly and we are really happy with its performance. Also shown is the aluminum driveshaft.

 
 

It fits! More installation pictures in the gallery.

 

It’s a very discreet look from the cockpit…until you feel the amazingly direct and precise feel of the CD009a!

 

Khang is in love with the six-speed, we are as well:

The CD009 Gives the Z such a more modern feel but still plenty of fun at the same time. Retains the rawness but then put it into 6th gear and it cruises like a modern day car. Love the shift knob.”

Enjoy this video of the Z in action with dyno runs, engine and exhaust revs, freeway cruising and acceleration:

Z Car Garage CV Axles

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 140 CV axle kits on customer cars and we are stoked with all of the positive feedback.

 
 

Stock half shafts (L) and ZCG units:

 

ZCG CV Axles installed on Khang’s 240Z shown below with more pictures in the gallery:

 
 

Panasport Wheels

We are an authorized Panasport dealer and lover. Khang’s meshies were replaced with 16×7 Panasports and 225/50/16  Yokohama S-drive tires followed by a full alignment:

 

Details

 
 

We sorted out little things for Khang that make a huge improvement in Enjoying The Ride. One item we are particularly proud of is this custom, OEM-like shift knob displaying a 6-speed shift pattern. Khang is one of the first customers (other than the Behemoth and Butters) to receive this cool shift knob that emulates the factory 4-speed shift pattern and font:

 

The speedo and tach are functional with a GPS box and tach adapter:

 

The interior was treated to a new set of Recaro Specialist seats and our ZCG sound deadening program to eliminate that “tinny” sound.

 

More small details like replacing all coolant and fuel hoses, breather, new battery and cables:

 

Driving is Believing

 

When Khang picked up car earlier this year, he was blown away:

“I’ve had several Z’s over the years. I had a green ’75 280z for about 10 years throughout college and had it worked on by Rob at one point. Sold the car and then just missed it too much and literally bought my current 73 240z about 6 months later in May of 26, 2017 as shown in the picture when I went to pick it up. I knew from my previous experience with Z Car Garage that I wanted Rob to build this new one for me.

 Thank you Khang for allowing us to build you a 50 year old supercar.  We are so fortunate to work with owners that appreciate the Z and believe in our ability to make them better! LONG LIVE THE Z!

 

More pictures in the gallery below:
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Z Car Garage is excited to collaborate with Datsunworks and develop their brilliant KN20 dual-overhead cam (DOHC) cylinder head designed for the Nissan inline-6 L-Series engine.

 

Datsunworks founder Derek Minetti is the pioneer behind the KN20 DOHC cylinder head. This is a custom (very limited production), 6-cylinder head derived from Honda’s venerable K-series 4-cylinder engine. The KN20 offers superior head flow rates combined with modern valvetrain components to effectively transform your L-series single-overhead cam into a high-revving, dual-overhead cam engine. The power potential is impressive.

Gary’s Datsun 240Z

 

There are ten KN20 heads in the wild with only three installed and currently running in cars. Z Car Garage has two KN20 cylinder heads. This KN20 is serial #SN10 and it has been installed into our long-time client Gary’s Datsun 240Z, affectionately named the “Behemoth”. ZCG is always exploring the boundaries of powertrains and Gary’s Z has seen a few engines including an RB30DET, OS Giken TC24 and now the Datsunworks.

 

Here are few details on the powertrain setup for this Z:

-Rebello 3.1L Engine

-KN20 Cylinder head SN10 (but the performance level goes to 11)

-Induction type: Jenvey ITB EFI with Injector Dynamics injectors

-Engine management: Haltech Elite 750

-Header: Equal-length, custom fabricated by RacecraftNW

-Transmission: Nissan CD009a

-Rear Diff: R180 4.11 OS Giken LSD

 

Pictures of the initial engine installation, with more in the gallery:

 

For further information on the KN20 cylinder head we urge you to visit the Datsunworks blog:
Datsunworks Blog

Performance

 

We are still in the tuning phase so Gary’s car is on a comfortable (conservative) setting. With the Datsunworks head it made 350hp/248tq at the wheels on 91 octane:

 

Even in a testing stage it is absolutely thrilling to drive. Gary’s car is a full ZCG-style restoration so it has the chassis to harness the power. The sound it makes is a sonorous tone only the K-series derived KN20 head creates…with a gnarly exhaust note to match. The ITB induction also provides a healthy wail…it’s a sensory overload and revs seem to climb endlessly.

 

To illustrate the Datsunworks experience we captured some video of what it is like to drive around town…the 6-speed and EFI really allow this car to be docile, especially when cruising on the freeway and at part throttle. Drop a gear and its becomes a wild animal. Not going to lie…it gave me goosebumps both as a passenger and spectator.

Watch the video complete with multiple dyno passes, street acceleration and fly-bys. VOLUME UP!

 

 

Potential

 

Z Car Garage is stoked to be a part of the Datsunworks KN20 development. It is a clever design that pushes the envelope for L-Series engines. Sharing this experience is also part of the fun so we anticipate having a KN20 setup in a dedicated shop 240Z for clients to test drive and further evaluate. Although each application is different, we envision offering a bolt-in setup for your six-cylinder L-Series engine. The power potential is tremendous with the KN20…both NA and forced induction. We thank Derek at Datsunworks for giving us the opportunity to work with this innovative product.

 

Stay tune for more updates and LONG LIVE THE (TWIN CAM) Z!

 

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Larry Chen’s 1970 Datsun 240Z is featured on the latest episode of Hoonigan Autofocus with, Larry Chen!. Watch Larry and Rob discuss all the changes and upgrades made by Z Car Garage and take it for a spin in this 1-hr long episode:

 

  

 

Long Live The Z!

 

 

 

 

 




Gary’s 1971 Datsun 240Z is Alive!

Filed under: 240z,Featured Cars and Projects,Parts,Performance
by Alvin G @ 11:40 am on March 8, 2021

 

Gary’s 1971 Datsun 240Z is back on the road with twin-cam L-Series Power! Turn your speakers up and enjoy.

 

6- speed transmission

6- individual throttle bodies

4- valves/cylinder

2- camshafts

 

Stay tuned for more…




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