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This is Christopher’s Datsun 280Z. He just installed our Z Car Garage CV Axles (set #0457) himself. The Z also features our Z Car Garage Big-Brakes and ZCG KW coil-over suspension! Full story on this epic build with ITB EFI-fed L-Series, CD009 6-speed transmission and Watanabe wheels coming to zcarblog.com. Long Live The Z!
At Z Car Garage we love keeping Z’s on the road. From concours-level restorations to light refurbishments, making a client’s goal a reality is our passion. Beau brought his 1976 Datsun 280Z from Castro Valley, Ca for a full cosmetic and mechanical restoration, ZCG-style.
Our Z Car Garage Big-Brakes, Z Car Garage CV Axles along with a new drivetrain, full suspension and body restoration transformed this S30. Before we explore the work performed, let’s take a look at how Beau found the Z car of his dreams…
BEAU: I am the second owner of the car – the original owner passed away and the children decided to sell the car. I saw it posted on Craigslist and knew immediately that this was the car for me. My brother-in-law took it on a test drive and it performed great, appeared to be in good condition – no rust, dings or signs of being mistreated. The owners told us that there were several interested buyers but the first person to show up with cash would get the car. We scrambled to quickly find cash at 6 PM in the evening and headed back to purchase.
Shortly after acquiring the car in 2018, Beau joined the Z Owners of Northern California (ZONC) and asked for recommendations on a mechanic.
BEAU: Everyone that I spoke with recommended that I connect with Rob. He is an artist – not just a mechanic. As such, the process takes time and involves patience. That patience is rewarded with a car where all of the details are considered and thought through. Rob listened to all of my requests – a car that looks like it came off the factory floor in 70’s but with performance, handling and upgrades that reflect what is possible today.
Above: The 280Z prior to restoration in 2018. Let’s dive into the transformation…
Following the mechanical restoration in 2018 (below), Beau was ready to build his own custom Z car. As with most folks he started seeing these hot-rodded 240Z cars around, and a full cosmetic restoration started…
BEAU: I wanted the car to appear more like a 240z (which I could not find at a reasonable price) – so, Rob removed and replaced the bumpers and added 240z tail lights. For casual fans of Z cars – it is not easy to tell that my car is a 280Z.
ROB: We made a plan with William to modify the front/rear of car to run 240Z bumpers and side mirrors. Beau was really keen on our client Randy Jaffe’s Rocketbunny Z, so the 280Z was finished the same color: Porsche Tangerine Orange:
BEAU: I wanted to note that we’ve named the car, “Orange Julius” – somewhat inspired by Larry Chen’s Ole Orange Bang and Randy Jaffe’s Rocketbunny Z which I saw at Z Car Garage and was floored by the color. The process took nearly 3 years and I endured a lot of questions from friends and family about when the car would be done – my patience was rewarded! Thank you Rob!
Beau acquired his 280Z from the original owner with 50k miles. We started a mechanical overhaul so he could enjoy driving it. A 4-core radiator upgrade is something we do anytime a car has an automatic transmission along with cooling line replacement. Beau wanted more power so the stock L28 was bored and stroked to 3.0L by Rebello with forged pistons and light port work:
With the engine/transmission removed we focused our efforts on restoring the engine bay. Everything was zinc plated and powdercoated. New parts included brand new injectors, all new fuel system, hoses, fuel filter and all the drive belts. The 3.0L still utilizes the factory EFI and intake manifold that was cleaned up and powdercoated:
MAF/hose/hardware detail:
Engine bay restoration, before/after:
We installed our full ZCG Exhaust system with slash-cut tip:
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. Stock half shafts and Beau’s ZCG units shown below:
A full suspension refresh was performed, including coil-overs (Koni), T/C rods and control arms from Techno Toy Tuning. T3 finishes the suspension in our signature color and we really appreciate Gabriel and his staff. They make some of the best suspension parts out there for Z cars.
All front and rear suspension parts were powdercoated:
We bagged/tagged every nut and bolt for plating along with fresh hydraulic lines for the chassis:
We are proud to have several of our ZCG products on Beau’s 280z. We installed our Z Car Garage Big-Brakes (for small wheels) which have the been standard on numerous ZCG builds.
Stock disc/drum brakes were removed and we installed our ZCG Big-Brake kit.
Complementing the new coilover suspension on Beau’s Z are 16×7 Panasports with Bridgestone S-007a tires in 225/50/16. Our ZCG BIg-Brakes also look great behind the wheels!
With the Z back from paint/bodywork we installed the interior, door panels, windows and all new weatherstripping. A complete dash restoration was performed with full HVAC/ducting using a reproduction piece from Vintage Dashes. ZCG has done several Vintage Dashes installations and we thank Ivan Jaramillo for making a cost-effective product for Z cars.
Recaro Specialist seats in leather are our favorite upgrade to the S30 interior. Beau enjoys modern creature comforts like Bluetooth, back-up camera, power steering and full sound system:
Another upgrade to the interior of an S30 is our ZCG sound deadening package. The result is a less tinny sound and almost Germanic-like “clunk” when you shut the doors. All weatherstripping was replaced:
The little things are what we excel at. Below, fuel cap plating with drip gasket, 240Z OEM mirrors and stainless window trim, microphone for hands-free Bluetooth mounted near steering column. Please check the gallery below for more detail shots, there are too many to list in this blog post!
ROB: This is a full ZCG-style restoration top to bottom and the best part is that Beau has been Enjoying The Ride. The Z has so many details/features in it and we are just happy to make his dreams come true. He comes back for a 1,000 mile checkup soon… and it’s back on the road again.
BEAU: From the exterior, I wanted the car to look as original as possible but I wanted better handling, more power, modern braking and some nice amenities like the back-up camera and power assisted steering. I wanted the car to be as original as possible – so, the engine was restored/upgraded by Rebello, many of the original parts were cleaned and re-plated and I stayed away exterior modifications like fender flares.
BEAU: Right now, I’m just enjoying the car. Nearly every weekend I go on rides with my 10 year old daughter and my son and I just attended the Tokyo Calling 3 and had a fantastic time taking turns driving the car and seeing what others have done to their Zs. At some point in the future, I’d like to replace the 3 speed automatic transmission with a more modern transmission.
We loved seeing Beau driving his Z on the Tokyo Calling 3 event hosted by Breakfast Club Rally. He’s attended a few more of their drives as well:
BEAU: After the restoration was completed, I met up with the children of the original owner to have them see the car and they were floored by the work. It was great to drive in the car with them and hear their memories of growing up with the car. They were delighted to see the car have a new life with me and my family.
Thank you for entrusting us with your S30 Beau it was a pleasure working with you. LONG LIVE THE Z!
Happy Friday from Z Car Garage! Today we are installing engines into a Hakosuka and R32 Skyline. Sebastian’s Hako is getting a 3.0L stroker engine to complement the suspension refresh and Z Car Garage Big-Brakes (Stoptech).
Kurt’s R32 R32 Skyline GT-R is getting a fresh RB26 motor and turbo upgrade to complement the new KW coil-over suspension:
Our Datsun forklift is putting in work! Full reports on both Skylines coming to zcarblog.com!
We love to see our parts installed and used on client’s cars. Race car driver and Datsun Historian Glenn Chiou is running our Z Car Garage CV Axles in this 1968 Datsun 510 U2.5L Trans-Am race car!
We also provided dyno tuning services to prepare him for the race weekend. The fresh Rebello L18 with Solex/Mikuni 44phh induction and BRE intake made great power.
Listen to this 510 make sweet L-Series music on our dyno in the video below. There is also race/paddock action with Glenn behind the wheel:
Glenn championed a vintage race group dedicated to the Historic B&C Sedan class and organized a “Celebration of the Two Five Challenge” display at the 2022 Velocity Invitational event. Two of the most iconic cars were present: the ex-Morton #46 BRE Datsun 510 (with Pete Brock below) and ex Kwech #3 Wetson’s Alfa. Yes that is Glenn with the legendary John Morton! Let’s take a look at the history behind Glenn’s Trans-Am 510 before we get into the restoration:
Glenn has a passion for re-telling the stories of legendary privateer Datsun racers and his penultimate restoration project was this 1968 Ex-Finn/Harris U2.5L Datsun 510, serial number PL510-023047. It is one of very few surviving cars that competed in the SCCA Trans-Am Two-Five Challenge, or more commonly known as the Under 2.5 Liter Series.
Its first two races were the two final races of the 1972 SCCA Trans-Am Two-Five Challenge season at Laguna Seca and Riverside International Raceway, finishing 15th and 23rd. Unfortunately 1972 would see the end of the Trans Am Two-Five Challenge, but that would not stop Finn and Harris from continuing to race the car. They competed throughout the 1970’s in the SCCA B-Sedan class both regionally and nationally with numerous first place finishes, often beating out factory race teams. While Riverside International Raceway was its home race track, the car could also be seen racing at Willow Springs International Raceway, Laguna Seca Raceway, Sears Point, Portland International Paceway, Ontario Motor Speedway.
In that time, Finn and Harris competed against the likes of John Morton, Horst Kwech Harry Theodoracopoulos, Bobby Allison, Walt Mass, Dave Madison, Corky Bell, Norm Balzer, Pat Daily, and many other prominent racers. Bill and Jack Johnston acquired the car in 1979 and would go on to race the car for the next 33 years. Bill Johnston and Steve Dragus shared driving duties, while Jack was the crew chief. Dragus, who was best known for the building engines for Don “The Snake” Prudhomme, prepared the engines. Johnston and Dragus won three regional Cal Club Championships in the 1980’s, and would go on to win the last SCCA GT4 national race at Riverside Raceway before the track closed in 1989. (images and history courtesy of Glenn Chiou)
The Ex-Finn/Harris Datsun 510 was not always in the orange livery shown above. When Glenn acquired the car several years ago it was red and he ran with this livery at many vintage racing events…until it was time to restore it back to its former glory…
Glenn is no stranger to vintage race car restoration. You may have seen Glenn’s FAR Performance 240Z in VIPS Restaurant livery as raced in the 70’s by Loren St. Lawrence. Glenn restored this car himself and it is now back to the Bay Area Datsun Dealers livery as raced by FAR Performance privateer Walt Maas. Glenn also restored the Different Drummer Racing Z raced by Greg Sorrentino. This IMSA GTU Datsun 260Z features our Z Car Garage CV Axles and dyno tuning:
The 510 was dissembled for paint and bodywork, using period photos to guide the livery hand-applied by the talented Real Ralph:
As usual, Glenn’s painstaking efforts and diligence result in a faithful restoration…where parts are not available he has gone to extraordinary lengths to re-create pieces or use period-correct/surviving parts with archival guidance…shown below: vintage SW oil cooler, BRE remote oil adapter, expansion tank and BRE intake manifold:
Glenn assembled the interior with Mil-spec switches & motorsports grade wiring:
The fresh Rebello L18 is about to be installed…all done by Glenn himself in his home garage:
I was lucky to visit Glenn to see the restoration in-progress and it was simply a feast for the eyes…plated chassis parts, cool bits of history everywhere…plus the BADD 240Z nearby 🙂
Thanks for your support Glenn! Congratulations on the restoration and we love racing with you #racingislife. Learn more about our Z Car Garage CV Axles below:
Our Z Car Garage CV Axles help transmit power to the ground and ensure smoother operation compared to your standard half shafts. These are 100% bolt-in replacing your half-shafts and does not use aluminum adapters commonly found in aftermarket units. We have over 200+ CV axle kits on customer cars and we are stoked with all of the positive feedback.
For more information please visit our detailed post our HERE. Below are just a few examples of race cars running out CV Axles:
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 – installed on Adam Carolla’s “Greg Sorrentino #90” Datsun 510.
Supermachine in Tokyo, Japan is running our Z Car Garage Big-Brakes and Z Car Garage CV Axles in their Series Datsun 240Z:
Race car driver, restorer and Datsun Historian Glenn Chiou is running our ZCG CV Axles in this IMSA GTU 260z race car!
Racer Brad H is running ZCG CV Axles in his IMSA GTU race car:
Let’s hear from Dirk about his journey for optimal chassis settings enabling both spirited street and track driving…
DIRK: “Shortly after I first got my Z, I broke the factory open diff on a windy road, and started working on the suspension. It was on stock struts and lowering springs, and the car bottomed out badly under braking while going downhill. So, it went to its first track day with an R180 diff from a Subaru WRX (3.54 Torsen), the factory 4-speed, stock L24, rebuilt stock brakes with high-temp brake fluid, and a set of T3 coilovers with 200# front and 250# rear springs (see that roll)”
“After that, I went to 300# and 350# springs to reduce roll and improve overall handling, note much less body roll below”
First, there was work to upgrade the steering geometry and suspension. With the car being lowered quite a bit, despite having 1″ RCAs installed, it had a ton of bump steer. Rob installed DP racing adjustable tie rods, removed the front springs, and completely eliminated the bump steer on the alignment rack while moving the suspension through its full range of motion.
New DP Racing tie-rods and in-house alignment:
We also refurbished Dirk’s steering rack with fresh parts from our stash:
With the Z back in the shop for bodywork we took the opportunity to make more suspension changes. New Koni Race shocks from T3 were installed, which were a much better match for the 300# and 350# spring rates than the Koni Sport shocks they replaced (as Dirk initially ordered the coil overs with lower spring rates, he never replaced the shocks after adjusting the spring rates, and the car always felt underdamped, particularly on the not-adjustable compression stroke):
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 Dirk’s stock brakes and installed our ZCG Big-Brake kit.
At the rear, the factory drum brakes were replaced with our ZCG Big-Brakes. Factory handbrake functionality retained!
After comparing the Z to his Subaru BRZ on the track, it was clear the Z was better at everything except for shifting gears. Since his engine made a healthy amount of torque, but not enough to warrant a CD009 (350z) transmission, Dirk kept looking for alternatives. He also wanted something with slightly closer gear ratios to better suit the engine’s power band. An S15 Silvia 6-speed seemed like the perfect fit and we installed it back in 2019.
The first S15 box had some weak synchros, so Dirk sourced another one that was installed with OE trans fluid, as well as a set of fresh OE motor and trans mounts to help with shifter feel and reduce vibrations in the car.
“The S15 transmission fit surprisingly well. ZCG built a custom crossmember to locate it, and the shifter lined up almost perfectly. No transmission tunnel mods were necessary. The modern shifter looked out of place, so ZCG built a custom unit that would look stock, and work with the Datsun competition shift knob. A small 6-speed shift pattern sticker modeled after the one used in the Silvia is the only clue there’s something different going on under this car. And of course the driving experience.”
Making the S15 shifter look factory, we are happy with the result and Dirk’s subtle shift pattern sticker:
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.
Also visible on Dirk’s Z are the excellent adjustable lower control arms from Techno Toy Tuning.
DIRK: “The Z has seen a few different tracks. Laguna Seca, Thunderhill in the dry, Sonoma in the dry and the wet. After quite a few street miles on the car with the ZCG big brakes, an 4.11 OS Giken diff, we sorted a few more things with the car. Most notably, we redid the front suspension, and installed a fresh set of Koni race shocks all around the car. These were a much better match for the 300/350 lb/in springs than the Koni sport shocks I originally bought with the coil overs.”
Finally, an opportunity to take the car to the track again came up, and Dirk with the S30, and his friend Joey with his E30 went to Sonoma Raceway:
DIRK: “The car was obviously a lot more capable than the last time it visited a track. The driver, however, was a little rusty, so with each session lap times started to come down but there is plenty more left on the table. The brakes were extremely consistent throughout the day, with not a sign of fade. And the whole car performed admirably. The temp gauge was steady right below the middle of the range all day long. I got fuel starvation in turn 11 once, which is somewhat expected with an unmodified set of Mikuni 44 PHHs, but other than that the Z didn’t skip a beat.”
We were stoked to see Dirk happy with our Z Car Garage Big-Brakes! Enjoy the video below showing in-car action from Sonoma Raceway, dyno run and more, volume up!
After many more tweaks, different induction setups, spring rate changes, rebuilt stock brakes, and 24K miles of driving including a few track days, Dirk’s Z was inching closer and closer to his vision. The next step in making the car faster would be to put in a more supportive driver’s seat.
Unfortunately, the Datsun Spirit engine developed rod knock which was the impetus for a big drivetrain upgrade. Several other parts of the car where refined as well.
The L28 engine was pulled, sent to Rebello, and built into a 3L powerhouse. Dave bored out the 44PHH venturis to a custom 38.5mm, to hit the perfect compromise between peak power and drivability. We also installed a fresh water pump, alternator, new fan blade, OEM fan clutch and fresh air filters. The beautiful DP Racing oil pan remained. More photos in the gallery below:
“The STR-3 already was able to slip the Exedy clutch and we were never fans of the Chromoly steel flywheel. A Jim Wolf Technologies clutch and flywheel combo was installed after first trying a newly developed Kameari single plate street clutch kit, which we both found too loud and racy for this street car. While the JWT pressure plate yielded a different pedal feel that took some getting used too, it was not too heavy and perfectly comfortable to drive in traffic. More importantly, it never slipped under any kind of abuse.”
The clutch hydraulics were replaced to work with new alumimum flywheel/JWT HD clutch combo:
We installed a ZCG-built 4.11 OS Giken limited-slip differential in the R180 along with a custom aluminum driveshaft:
The previous L28 made 202hp/194tq at the wheels with Rob’s tuning. Now with the fresh 3L it baselined at 245hp/226tq with more area under the curve:
Rob tuned the car further on the chassis dyno, setting it up with a very lean idle at Dirk’s request (to minimize gasoline fumes at idle). With A/F optimized and Nismo Mikuni carbs massaged, Rob unlocked another 20hp yielding a stout 265hp/232tq to the wheels:
With gains of 62hp/37tq at the wheels over the L28, Dirk is very happy with the new 3L:
“While the Datsun Spirit engine had a very peppy mid-range and made more delicious induction noises, there’s no argument that the more powerful Rebello engine elevated the car to the next level of performance and fun. The entire setup worked incredibly well together, and we hit an impressive 265hp at the rear wheels, or 60hp more than the engine made in its previous iteration, putting it in the 100hp/liter ballpark at the crank. Not bad for a dinosaur engine on California pump gas!”
Dirk bought his first Datsun in 2014, a 1970 510, to learn how to work on cars himself. After learning more about the history of Datsun, and the significance of both the 510 and the 240Z in establishing Japanese cars in the American market, he knew he had to own a Z as well.
A year later, the right Z showed up on eBay in Texas, a 1973 in silver gray. After pouring over the photos and talking to the seller, Dirk bought the car sight unseen. The idea was to have a nice Z to enjoy and drive, while continuing to work on the (sometimes not) rolling restoration of his 510. The car was lovingly restored by a dad and his children and in mostly stock condition. Dirk also has Datsun 620 work truck complete with dual-Mikuni’s:
Dirk shares his experience working with us:
“Collaborating closely with Rob and ZCG has elevated the optimization process. Rob will frequently talk me out of a bad idea, or into a good one (like the OS Giken LSD). Sometimes I talk him into a bad idea and it turns out to work really well, like the S15 gearbox. The most fun is when we brainstorm stuff together like turning the catch can setup into an improvised simple PCV system, eliminating all hints of oil fumes from the car while running.”
Dirk’s been driving his Z-car pretty much every day since the latest upgrades, and it’s been working phenomenally well:
“The drivetrain + brakes make it as happy to accelerate as it is to stop, and with the quick, closely spaced shifts and eager engine, it’s fun to do a casual grocery run, and to drive quickly. With the electrical systems and all fumes well under control, it’s truly a car you can do anything with, and probably more reliable than my BMW.”
We loved to see Dirk driving his Z on rallies and fun runs this year. Most recently we joined fellow Japanese vintage car owners on the Tokyo Calling event hosted by Breakfast Club Rally:
Dirk also joined us for a New Year’s Day drive through our favorite Bay Area Backroads:
We enjoyed working with you Dirk and it was rewarding to help improve your Z.
“Some say good is the enemy of great, but that’s true if you think you’re done. I don’t see my Z car less as a “build” that’s done. I’m always developing it, just like continually developing a race car (e.g. my Lemons car, http://instagram.com/bittersc243) to stay competitive. In this case the competition is merely for making the Z into the most fun driving experience I can imagine, and the journey of continuous refinement and improvement is a big part of the fun for me.”
We helped Dirk prepare both the 510 and Z for overseas shipment to the Netherlands. Stay tuned for a feature on Dirk’s Datsun 510, it’s a really neat little Dime with a screaming L-Series. Thanks for your support Dirk and LONG LIVE THE Z!
