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Happy Birthday to Joel Anderson who passed away in 2021. Joel would have been 82 years old today and we miss him dearly. He was an immensely talented graphic artist and successful privateer Datsun racer with regional and national championships all over California. See Joel’s racing career and learn how he helped us enter the world of vintage racing in our tribute HERE
Join us on Saturday, February 24 for Cars and Coffee at SIM Racers Group in San Jose. Z Car Garage would like to gather a group of vintage cars to attend. Bring out your Datsun, BMW, Alfa or any old-school marque. Stay tuned for caravan details on zcarblog.com Thanks to Classic Sports Racing Group (CSRG) for hosting!
Come caravan with us to the event! Meet at Z Car Garage Saturday 2/24 and we will depart at. 8:15am sharp heading to Tully Rd. Friends/family welcome and please contact robATzcargarage.com with any questions. Bring out your Datsuns!
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!
WE LOVE RACING! On November 10-12 we attended the Velocity Invitational at Sonoma Raceway. Z Car Garage had a blast racing and supporting clients in Group 6 (1968 – 1978 IMSA GT Cars), Group 9 (ALMS) and Group 10 (Mini vs Mustang Enduro). This vintage racing event was just as fun for spectators with a friendly, immersive vibe. Enjoy our report from the weekend with photos and in-car video of the action.
Rob Fuller piloted the #49 Joel Anderson IMSA GTU Datsun 240Z
This very special Porsche is the 2006 FIA European GT3 Championship winning car that was driven by Sean Edwards. It is a 997 GT3 Cup S Prototype and our client Kenny Tse raced it in Group 9 (ALMS). Listen to this car on the Z Car Garage dyno below!
Z Car Garage prepared and provided trackside race support for our client Kelvin Tse and his IMSA Porsche 911, running with the Z cars in Group 6.
Rob Fuller and Greg Hoff raced a Mini Cooper against Mustangs in the Group 10: 1960’s Mini Vs Mustang Enduro, this was an action-packed group!
Race car driver, restorer and Datsun Historian Glenn Chiou raced his FAR Performance 240Z. This Z has a very rich racing history, driven in the 70’s by Loren St. Lawrence in VIPS Restaurant livery.
Group 6’s IMSA cars were dominated by big-power Porsche 911 RSRs with a few BMS CSLs and four S30 Datsuns. Rob Fuller ran the #49 Joel Anderson IMSA GTU Datsun 240Z joining Dave Stone’s 260Z, Gary Cook’s CP 240Z and Glenn Chiou’s’ 240Z:
This was Z Car Garage’s third time running the Velocity Invitational event. Enjoy Rob Fuller’s race report with video below…
ROB: “The IMSA GTU Z made a switch this season from Avon to Goodyear tires, and it’s really been quite amazing. You have to remember that all of the suspension on this 240Z is what Joel ran in 1981, and it still rocks. Group 6 was fun and I was in the mix with legends…spent the last 20 years attending the Historics watching Bruce Canepa in his Porsche 935, Ken Epsman in his DeKon Monza, the Greenwood Corvette…just unreal to be actually racing with them!”
Enjoy these shots of the #49 car in action by photographers Kris Poulin, Chris Constantine and Charles Frerking:
We have in-car video from Rob in the Joel Anderson IMSA GTU 240Z and Group 6 racing action below, volume up and enjoy!
Sunday Race:
Catch some Turn 2 action HERE and watch more of Rob’s racing adventures on his YouTube Channel.
ROB: “ZCG provided trackside support for 4 cars. Kelvin in IMSA 911 and myself in G6, Kenny in G9 ALMS with a bunch of 996/997 Porsche Cup cars, Ford GT’s and really cool metal. They all had a blast. We changed up a few things on the IMSA 911 and solve some issues that came up at Rennsport so he was able to have a good time at Velocity.”
Kenny with his 997 GT3 Cup car and first time on track since 2018. Z Car Garage prepped the car with fluids and dyno tuning, and wow what a car:
ZCG is always willing to lend a hand to fellow racers, like Dave Stone:
ROB: “We also ran a Mini with Greg Hoff in the Enduro. The Mini kicked our ass all weekend and we had to do an engine swap (thanks to Nick for the assist!)…we had electrical woes. British Steel really challenged us and thanks to the ZCG crew we were able to catch the last Enduro race and take the checkered flag.”
Enjoy this video highlighting the Sonoma Raceway paddock with race group walk-throughs, engine sounds and more:
There was no shortage of rare and exotic cars from well-known and upcoming supercar marques. Guntherwerks had their 911 Speedster and McLaren showed off an incredible display of F1s mixed with newer models:
Formerly known as the Sonoma Speed Festival (2019), the Velocity Invitational re-imagined the vintage race experience with a Goodwood-inspired vibe that we enjoyed at the 2022 Velocity Invitational. One of the best experiences for spectators is the paddock and organizers made access to drivers and their machines seamless. Fans could get up close and personal with race cars without the typical ropes or 45-foot RVs in the way:
ROB: “First time running at Sonoma for us with VI, since we missed the inaugural event in 2019. Jeff O’Neill ‘s event is first class and reminds us of what the Rolex MMR used to be. So much excitement in the air…when you drive in people would be everywhere. Thanks to Jeff, Ryan Turri and Ardelle Lind for accommodating our needs.”
“They have done an incredible job making the guests and fans welcome. Organizers created a memorable experience, down to the driver’s meeting and we really enjoyed the paddock design, signage, F1 energy. All three days there were lines to get into the event! More driver amenities like the lounge, food and drink…ZCG’s first shop helper Jeff Garcia and his company was in charge of coffee/drink services at the event, small world!”
The hot pit area where all run groups stage before heading out to the track is an amazing place to be. Typically, access is only granted to pit crews and media. At the Velocity Invitational however, organizers staged a “false grid” where any spectator could walk amongst the race cars.
If you want to see action from the event in its entirety, check out Goodwood’s live streaming coverage of Day one and Day Two. Huge thanks to Meghan Fuller for capturing photos/videos for ZCG. More photos in the gallery below!
Huge shoutout to the Z Car Garage race crew including Josh, Meghan, Nick and Cooper. We are grateful for your support, keeping us safe and on the track!
Thank you Velocity Invitational for an incredible event. We look forward to running with you again. Join us for the 2024 race season starting March 1 with SVRA at Thunderhill. See the ull race schedule below and LONG LIVE THE Z!
We love to see our products being installed and used on client cars. Armon is running our Z Car Garage Heat Shield in his 1973 Datsun 240Z that he rescued and restored on his own.
We are excited to offer the Z Car Garage Heat Shield for your triple-carb’d L-series Z car. This is a one-piece 304 stainless unit with laser-etched serial number. Proven on all of our L-series engine builds and dyno testing.
This heat shield will fit Mikuni, Weber, Dellorto and Jenvey induction with several intake manifolds like the Harada. Also available for 4-cylinder L-series applications as well!
The ZCG Heat Shield is available for purchase with product information below. View this product and other ZCG parts on the new “products” page of our website HERE
Armon is a car enthusiast passionate about keeping classic cars on the road. “Save Classic Cars” is a platform he created to share his love for vintage metal and foster the DIY spirit in others. You can catch his adventures on Instagram. Let’s hear from Armon himself about the rescue of this 1973 Datsun 240Z…
ARMON: “I actually remember looking into 240z’s when I was 16 years old- I’m 28 now. At the time, I wanted something classic that I could tinker with and drive throughout high school. Most of the Z cars listed for sale had some level of rust, which in hindsight, was nothing compared to what I would eventually get my hands on. I eventually gave up and ended up buying a classic mustang (then another, and other, etc). I still wanted a Z car, but didn’t actively search for one due to the price- the days of the “cheap” 240z were long gone in my book.”
“Last August (2021), I went on a walk in my neighborhood with my Dad. We spotted a Z car tucked away behind a pile of firewood just 800 feet from my house. I came back the next day and introduced myself to the neighbors- the gentleman who owned it bought it in 1989, paid someone to tune it (which made it run worse), and subsequently parked it in 1991. The car sat there for 30 years and became one with the earth- it had sunken into the ground, a tree had grown up next to the door, there was moss growing on the paint, rodents living/dying in it- the poor thing was a mess. The owner told me he wanted to sell it- I got excited and bought it on the spot (in hindsight, I probably should have at least opened the hood).”
“With the help of a few buddies and a truck, we dragged it out of the ground and down the street to my house. It turns out the person who did the tune up didn’t gap the points. It was running the next day, I actually drove it to the previous owner’s house the following week. The car ran incredibly well- someone had swapped in an L28, regeared it with 3.90’s and added the Mulholland suspension package.”
“Beyond that, it was an absolute mess. Floors, firewall, frame rail, floor supports, toe boards- all toast. It had been hit hard on the passenger side and poorly repaired. I fell in love with this car after driving it, I decided that I wanted to keep it and fix it. I stripped the car down to a shell, built a frame jig, and made the car whole again; literally. Oh, all of the metal work and mechanical restoration was done in THREE months. As fun as that was, I think I’m going to need a little break before I take on something like that again.”
“The cylinder head was rebuilt with a more aggressive cam and larger 280z valves, triple-Webers, and then completely resealed. Many Z enthusiasts mentioned adding a heat shield- I didn’t think much of it until I watched one of my Weber’s drool some gas onto the headers. A quick email to Z Car Garage and I was on my way home with a new heat shield! It looks great and keeps the Webers cool.”
Close-up view of the Z Car Garage Heat Shield beneath Armon’s triple-Weber induction setup, this unit is serial#00258:
With the engine taken care of, Armon added T3 front control arms, T/C rods and ST springs (courtesy of ZCG) along with replaced bushings throughout:
“I then sourced a 280z 5 speed and some Datsun comp style seats- my crusty (but solid!) go kart was ready to take on the world. Future plans? Continue flogging it! I’ve been driving my 240z every chance I get. I’d like to grab some stickier tires and hit some track days, it’s been an absolute blast to drive around town and in the mountains.”
We love that Armon drives his Z everywhere. He’s joined us on local events and gatherings like the Breakfast Club Rally. Their “Tokyo Calling 3” event (above) was ~300miles of fun through beautiful Sonoma backroads. (below) Meeting up with our client Dirk and his 1973 Datsun 240Z:
Enjoy this video of Armon’s 240Z in action…
More photos of Armon enjoying the Z after rescuing it are in the gallery below…happy to see him at Nick’s birthday party:
Alexey Orlov captured the sound and experience of driving the Z in this video below:
Z-car ownership often comes with some interesting stories from previous stewards. Armon was reunited with a former owner of his Z and it’s neat story:
ARMON: “That’s not just any 240z. That’s MY 240z! I recently met with the gentleman who owned my 240z from early 70’s to 1989- it turns out he lives half a mile away from me. He gave me the full story and sent me a few pictures from back in the day- it’s incredible. He [John] bought the car from the original owner not knowing of all of the hidden accident damage, then had a buddy weld it up (he never looked back, the car drove fine). Every few years, John would get bored, strip the car down to bare metal, and repaint it a different color in his parents garage. It’s been metallic brown (original color), red, yellow, green, black, and white- all with psychedelic 70’s stripes and graphics. He swapped in the L28 short block when the original L24 died and he would go to the legendary FAR Performance to buy his parts.”
Thank you for your support Armon we are happy to see our Z Car Garage Heat Shield on your S30. Long Live The Z!
