Our client Gary’s S30 with the Datsunworks KN20 twin-cam cylinder head is featured in the popular Japanese magazine, “Option”.
Supporting the 3.1L engine are our Z Car Garage Big-Brakes, Z Car Garage CV Axles, Jenvey ITB EFI with Haltech Elite management, Nissan 6-speed CD009a transmission and OS Giken 4.11 LSD. You can view the article HERE.
Big thanks to photographer Akio Hirano and Hideo Kobayashi for taking the time to visit Z Car Garage on their trip from Japan. Long Live The Z!
At Z Car Garage we love getting Z’s back on the road. Garett is a Bay Area local and visited us for mechanical sorting on his 1972 Datsun 240Z. Our Z Car Garage Big-Brakes, Z Car Garage CV Axles combined with a suspension rebuild improved the chassis. Power comes from a Rebello 3L with our Z Car Garage Heat Shield and in-house dyno tuning to make it sing.
“I first learned about Z Car Garage just searching on the internet to see who works on Z cars exclusively in the Bay Area. Then I started watching videos of Larry Chen and all the amazing work that Z Car Garage provides and I knew I wanted to go with them for their expertise on my 1972 240z, which I couldn’t just trust any mechanic to work on this beautiful car.”
Before we describe the mechanical work, let’s hear how Garett got in to his Z car…
History
Garett’s love for the Z starts at a young age. His Dad purchased this S30 brand new in June of 1972:
“Ever since I laid eyes on that car I wanted it and eventually when I turned 20 years old I bought it off of him and after driving for a while it blew a head gasket. I learned about Rebello racing, located in Pacheco at the time and I put in a fully ported and polished 3 liter with triple-Mikuni carbs. The amazing Mike Yoes lived one town over from me in Crockett, and installed my engine right out of his garage.”
“After a while my Z sat in the side of my parents house for a while due to lack of money to fix other parts. After 6 years I’m slowly reviving her and now she’s back better than ever with a lot of love put in. My goal with the Z was to basically restore it back to original look and functionality with the mechanical upgrades to really enjoy the car to the fullest.”
Drivetrain
Garett’s Z sports a Rebello 3L engine with 280ZX 5-speed from many years ago. We installed what every triple-carbed L-series needs: a ZCG Heat Shield! Garett has #HS00257.
Dyno Tuning
Rob dyno tuned the Rebello 3L engine with jetting, A/F and performance in mind. Baseline was 215hp/202tq and it left with 229hp/209tq to the wheels:
Enjoy the L-series music in this video of Garett’s Z on the dyno…volume up!
Driveline Upgrades
Helping put the power down efficiently is an OS Giken LSD paired with our Z Car Garage CV Axles. The R180 houses a 4.11 R&P and the assembly is setup in-house (by Joshua Corwin). More photos in the gallery below:
Z Car Garage CV Axles
Garett initially contacted us to have Z Car Garage products installed on his 240Z. Z Car Garage CV Axles help transmit power to the ground and ensure smoother operation compared to your standard half shafts. We have over 200 CV axle kits on customer cars and we are stoked with all of the positive feedback.
We replaced his existing CV Axles (left) with ZCG units (Right). Garett received set #00426. Also visible are the T3 lower control arms:
ZCG Big-Brakes
We are proud to have several of our ZCG products on Garett’s 240z. We installed our Z Car Garage Big-Brakes (for small wheels) which have the been standard on numerous ZCG builds. 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.
At the rear, factory drum brakes were replaced with our ZCG Big-Brakes. OEM Nissan master cylinder and Factory handbrake functionality IS retained! Not only do they perform, they look great behind the 16×7 Panasport wheels!
Suspension
The front suspension was overhauled with new adj. T/C rods from Techno Toy Tuning, new control arm bushings in OEM control arms, rack bushings, ball joints, outer tie rods, steering rack boots and more.
Old, torn rack boots vs new units and new T/C rods:
The rear suspension received new T3 lower control arms and rear wheel bearings.
Details
Small items that make a difference: we corrected his brake booster issues, fixed the emergency-brake lever that popped out of its housing and corrected his speedometer:
While were in the engine bay we also upgraded to a 280ZX alternator with Motorsport bypass and corrected throttle linkage issues to make the gas pedal feel awesome:
Panasport Wheels
We installed 16×7 Panasport wheels in our offset allowing 225/50/16 tires (Bridgestone RE-71R). The Z was fully aligned afterwards.
Driving is Believing
Garett was happy with the mechanical upgrades and ZCG parts:
“I got the work done over last December. Z Car Garage works so fast and everything was done and ready in about 4 days. I know there were supply chain issues but after 2 plus years of waiting it was worth the wait. I could really feel the difference when driving in hard turns and how the other wheel grips and really pushes my car through the turns compared to the original open diff. The low drone sound went away as well. The Z Car Garage Big Brake kit works well. I put them to the rest and they do their job. I love the drive and acceleration.”
We enjoyed working with Garett and loved that he’s owned this Z for a long time. He’s also into music, playing in bands in the Bay Area. What’s next for his Z car?
“Future plans include new or aftermarket seats which are comfortable on long rides with no lower back pain, while keeping me planted in my seat and maintaining a time period classic look. New gauges and a dash restoration down the line would be nice as well, but all in due time.”
We’re here to help you when ready, Garett. Long Live The Z! …[read more]
To celebrate their 100,000 listing, Bring a Trailer is auctioning their 1973 Datsun 240Z, prepared by Z Car Garage. Finished in Lime Yellow (#112) paint over black vinyl upholstery, it is powered by a numbers-matching Rebello Racing-built 2.7-liter straight-six with triple Weber 40 DCOE carbs. Additional modifications include a 280ZX five-speed manual transmission, an R200 limited-slip differential, ZCG Big-Brakes, ZCG exhaust system and 16″ Panasport wheels with new Michelin tires. The total sale amount for the auction will be donated to the Piston Foundation, a nonprofit that will use 100% of the funds to help young technicians build rewarding careers in the collector car industry by funding programs in the skilled trades. View the auction HERE.
Z Car Garage built and maintained this Z for the previous owner since 2009 and updated it to BaT-preferred spec in 2018. It has since been used as an event car by BaT staff, with whom it has participated in many rallies, cross-country road trips, displays, and other events in the ensuing five years. Enjoy this video showing the Z in action and see below for more details:
The straight-six was bored and stroked from 2.4 to 2.7 liters by Rebello Racing and was installed at ZCG in 2011. Triple Weber 40 DCOE side-draft carburetors with K&N filters are mounted to its E88 cylinder head. Additional engine bay modifications include a polished valve cover, an MSD ignition system, and an inline fuel pressure gauge. Engine number L24-131094 is stamped on the block and matches the chassis plate. Rob dyno tuned the Z, making 203 horsepower and 190 lb-ft of torque at the rear wheels:
A replacement 280ZX five-speed manual transmission was also installed by ZCG in preparation for the sale. An aluminum flywheel and a heavy-duty clutch were fitted in 2011, while both clutch hydraulic cylinders were changed in 2018. Power is sent to the rear wheels through a custom-built driveshaft and an R200 limited-slip differential with a finned rear cover.
Factory black vinyl bucket seats were reinstalled, as was a stock steering wheel. The air conditioning system was converted to use R134a refrigerant in 2009, and was recharged as part of the February 2023 service at ZCG.An Alpine CD/MP3 player feeds aftermarket three-way 6×9 speakers mounted in a ported box in the rear of the trunk. Diamond-patterned vinyl trim is retained on the center tunnel and in the cargo area, while embroidered mats protect the carpets on the floors.
The Z has been stored indoors at BaT Headquarters in San Francisco when not in use. Details concerning the initial purchase and an ensuing cross-country drive from the Bay Area to Road Atlanta are chronicled in this seven-part feature from early 2018. The car has also been used in events such as:
2018 Copperstate Rally (as a photo and chase car, part of the cross-country trip described above)
2018 Tour to the Mitty (part of the cross-country trip described above)
2018 Faultline 500 in Central California
2018 BaT Alumni BBQ at Monterey Car Week
2018 Targa Baja California (from Palm Springs to mountainous central Baja and back)
2019 BaT Alumni Gathering at WeatherTech Laguna Seca Raceway
2021 Faultline 500 in Central California
2021 Drive Toward a Cure
2021 Golden Week Kyusha Festival in Northern California
2021 BaT Alumni Gathering at WeatherTech Laguna Seca Raceway
2022 BaT Alumni Gathering at WeatherTech Laguna Seca Raceway
2022 Overcrest Rally (nearly 1,800 miles in eastern Washington and central Idaho over three days)
2022 Breakfast Club Rally: Tokyo Calling
Additional details can be seen in our blog reports from April 2018,December 2018, and February 2023. Congrats Bring a Trailer on your 100,000 auction. We are really happy to be a part of the journey and Long Live The Z!
At Z Car Garage we love keeping Z’s on the road. From concours-level restorations to light refurbishments, helping a client realize their vision is our passion. CJ shipped his 1971 Datsun 240Z from Durango, Colorado for final mechanical sorting, ZCG-style. Our Z Car Garage Big-Brakes, Z Car Garage CV Axles and Z Car Garage Heat Shield along with a new drivetrain make this the Z of CJ’s dreams.
CJ’s Z Story
Before we dive in to the project let’s hear how CJ got his Z car…
CJ: “When I was in my teens I was a huge WRC fan, and rally led to my passion for Japanese cars. Video games like Sega GT and Gran Turismo also helped. I think my first exposure to classic Z cars was when I was about 17 and it was probably in a bootleg Wangan Midnight VHS that my buddies and I found at a Japanese video rental place. I’ve loved the aesthetic of the S30 since that time. It’s not an exaggeration to say I’ve dreamed of an S30 with factory fender flares, an air dam, and a 432 style wing for over half my life, but I never had an opportunity to own one.”
In 2017 CJ acquired his best friend Travis’ 1971 project car that hadn’t run since the 1990s. Over the next four years, and with significant help from his wife, the duo restored or refurbished just about every part of the car.
CJ: “We fully refurbished the dash, redid the entire interior, and mechanically refreshed the brakes and drivetrain. The exterior received new factory matching paint, new gaskets, tail lights and corner lights I refurbished, RS Watanabe wheels, and flares from Marugen Shoukai. The car also got BC coilovers, Techno Toy Tuning arms and subframe components. The L24 was replaced with an L28 and triple Mikunis, assembled in my garage. There are so many good memories wrapped up in the restoration of this car and it was a blast to learn new skills throughout the process.”
In October 2020, with the engine he built with his Dad the car drove under its own power. CJ was proud, and the moment was satisfying and exhilarating, right up until it wasn’t. He had been building drift cars since the early 2000s but the first drive of this car made it clear that if he wanted a car that was sturdy, reliable, and confident to take on road trips, he’d need to get some help from a specialist…
CJ: “And that’s where Z Car Garage came in. I’d been an avid reader of the Z Car Blog throughout the restoration and had even spoken to Rob occasionally about various issues. There was never any question as to where I wanted to send the car for finishing school. So in Spring of 2021 I shipped the car from my small Colorado mountain town to San Jose. The initial plan was to have Rob and the crew bring it that extra 10% to completion. Thankfully Rob understood my vision and suggested additional work to ensure I actually wound up with the car I’d been dreaming of for so long.”
After sorting the engine and installing brakes/suspension we were stoked to get CJ’s car running. Before hitting the dyno we always do a test drive on the street and we noticed low oil pressure on the dash gauge, despite lack of obvious noises or behavior. Low oil pressure unfortunately was confirmed with our own gauge, and so we were at a crossroads with this 2.8 engine that CJ assembled together with his Dad. A decision was made to send it to Rebello Racing for a 3.0L build and it really came alive. CJ already provided the ph44 Mikuni carbs and we installed what every triple-carbed L-series needs: a ZCG Heat Shield!
A Moroso competition baffled oil pan prevents oil starvation with high cornering loads:
Cj was having header fitment issues. We ensured clearance was no longer an issue with a Fujitsubo exhaust system from manifold to muffler. These newer units have better fitment, but every car is different. More photos of the exhaust system in the gallery below:
The engine bay turned out great with general clean-up and sorting:
Driveline Upgrades
With the 3L engine in we focused on the transmission and rear axle. To handle the power from the 3L engine we replaced the stock 4-speed with a Nissan KA24 (FS5W71C) transmission. This was a common swap (before the CD009a came to market) performed by modifying a 280Z L-series bell housing. When we upgraded the transmission we also installed 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):
As CJ mentioned, he is avid reader of our zcarblog and no stranger to the “Butters” phenomenon: clients desire a similar setup for their own S30s. Our 1971 shop demo Z Mrs. Butters proudly features our Z Car Garage Big-Brakes, Z Car Garage CV Axles, ZCG Heat Shield, 6-speed transmission, full KW suspension (releasing soon) and 3.2L engine with triple-Mikuni induction. 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 200 CV axle kits on customer cars and we are stoked with all of the positive feedback.
We replaced the existing CV Axles (left) with ZCG units (Right). CJ received set #00395. Also visible are the T3 control arms:
Dyno Tuning
Rob dyno tuned the Rebello 3L engine with jetting, A/F and performance in mind as CJ would be driving this Z at 6,500ft above elevation. It put down a stout 261hp/220tq to the wheels:
Enjoy the L-series music in this extended video of CJ’s Z including dyno runs, test drive with Rob and engine/exhaust sounds…volume up!
ZCG Big-Brakes
We are proud to have several of our ZCG products on CJ’s 240z. We installed our Z Car Garage Big-Brakes (for small wheels) which have the been standard on numerous ZCG builds. 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.
We removed the stock brakes and installed our ZCG Big-Brake kit. Not only do they perform, they look great behind the 15×8 Watanabe wheels!
At the rear, the factory drum brakes were replaced with our ZCG Big-Brakes. New OEM Nissan master cylinder and Factory handbrake functionality IS retained!
Details
Cj’s project involved more than installation of our ZCG performance upgrades and dyno tuning. We nut and bolted the entire car, installed T3 RCAs to fix suspension geometry up front, set the ride height, scaled and aligned it. The gas tank was removed and all fuel recovery hoses replaced along with a new fuel pump. The clutch pedal was removed to allow welding-up of the pivot hole that had wallowed-out. This ensures proper clutch travel to work with his new KA24 transmission/clutch combo. The master cylinder, slave and hose were replaced with all new Nissan OEM components.
Driving is Believing
CJ’s Z was shipped back to Colorado in November and we are happy to report he is Enjoying the Ride in his dream Z…
CJ: “Like so many project cars, the goals of the build evolved and the car grew into something significantly more impressive than the onset of the build. Throughout the car’s time at ZCG Rob was great to work with and he always understood my vision and explained how to make it real. By the time the car came back to me in November of 2022 it may have still looked like the car I sent away, but the similarities were skin deep. From the brakes to the drivetrain the guts of the car were totally new and upgraded.”
CJ was impressed with the upgrades from Z Car Garage:
CJ:“The car is incredible now. It is an absolute animal when you give it full beans and the sounds and sensations it creates for me as a driver are like nothing I’ve ever experienced in a car. It is well mannered and drivable at low speeds and can cruise comfortably and quietly in 5th on the highway, but the instant you open up the right pedal it will shove you back in your seat with a massive grin on your face. The best thing about the car to me is the way each piece is set up to work together. The new ZCG brakes and axles work with the new transmission, OS Giken diff, suspension set up, and stout Rebello 3L to deliver a driving experience that is both exciting and confidence inspiring.”
CJ: “One of the coolest things about these old Z cars is the variety of people who love them. When I am out for drives I am just as likely to encounter a 19 year old kid who loves the car as I am to encounter a 79 year old with the same enthusiasm.”
We enjoyed working with you CJ, thank you for your support! Enjoy the photo gallery below.
Rob: “We enjoyed working with CJ, not only does he have a bitchin’ Z car, he’s fun to work with, very responsive and we had great conversations. He did not hold back in communicating his needs and we were happy to deliver the goods like we always try to. Honored to have folks locally and globally that want to work with ZCG. Thank you so much CJ, Long Live The Z.”
Happy New Year from Z Car Garage! We are excited for 2023 and have many projects to share with you. Enjoy these photos from the shop today, Friday 6 with full reports coming to zcarblog.
Rick’s BRE 240Z tribute track car
Rick’s BRE-inspired Datsun 240Z track car just received our first set of Z Car Garage KW coil-over suspension from our latest batch. Clients that have already placed an order: kits will ship soon pending an instruction manual first. We also finalized the CD009 6-speed transmission swap on Rick’s Z that also features our (Race) Z Car Garage Big-Brakes.
Cameron’s Z32
Cameron’s Z32 is here for maintenance work and downpipes, inlet piping, larger intercoolers all from Specialty Z. Cameron has been bringing his 300 to us for many years and we we are really glad to have him back.
Nissan/Infiniti
We continue to maintain and upgrade late-model Nissan/Infiniti sports cars. Sean’s 370Z is in for an engine replacement and Mark’s 350Z got an alignment and UPREV dyno tune today.
Outside in the parking lot we’ve got more S30 goodness. Mike’s yellow V8-powered Datsun 280Z sports a real G-nose and Tremec 5-speed. We just removed the transmission and replaced the clutch to prepare this Z for its new owner. Beau’s orange Datsun is 280Z coming together. Fresh from paint featuring Z Car Garage Big-Brakes, Z Car Garage CV Axles, T3 suspension and more. This 280 has many 240Z parts retrofitted and it will be cool hot rod.
Ken’s green Series 1 Datsun 240Z (#1762) is getting our Z Car Garage Big-Brakes, Z Car Garage CV Axles, KA24 5-speed transmission and Fujitsubo exhaust. The L28 now has Jenvey ITB EFI managed by a Haltech 750. With a cam, dyno tuning and exhaust Rob gained 40hp! Shown on the lift next to Beau’s Z is Eric’s Infiniti FX35 sporting upgraded suspension and R35 GT-R wheels in today for routine maintenance.
