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. This is a Honda K-series derived cylinder head with superior flow rates and modern valvetrain components effectively transforming your SOHC L-series into a high-revving DOHC engine.
We have installed the Datsunworks head into our client Gary’s Datsun 240Z (affectionately called the “Behemoth”) and it is currently in the tuning/testing stage. In conservative tune it made 350hp/248tq at the wheels. Recently we joined photographer Naveed Yousufzai at a photoshoot for full feature on Marqued.com. Check out the story and amazing photos by Naveed with amazing shots at Marqued HERE.
The photo shoot left us breathless and we really appreciate how the small details are captured like the Behmoth’s integrated roll cage, Recaro seats, 6-speed shift knob and 10krpm tach…check out the feature!
This video shows behind the scenes action of the photoshoot for Marqued.com. I tried to capture the incredible induction sound the KN20 creates. For the first time we cruised on the freeway together with the Behemoth…it was the “trifecta” with 240Z, 510 and Datsun Roadster. Turn up those speakers and enjoy!
For more information (and video) on the KN20 and visit our previous post HERE
David O. has been a Z Car Garage client since 2005. Together, we helped achieve his vision of a fully restored S30 with multi-dimensional performance: a daily driver that is equally adept at canyon runs and open track events. 17 years later David is still Enjoying the Ride and recently visited us for track day preparation.
Before we get into the build details dating back to 2005, let’s hear from David on his recent track day experience.
Take it to the Track!
David is an avid motorsports fan and driver. The Z has seen many track days since the restoration and came out of storage so he visited Z Car Garage for a pre-inspection.
We bled the brakes and made sure everything was ready for the event. He had a great time:
“It was my first time back on the track with the 240z in several years. I went out for half a day with Hagerty Insurance and their affiliation with SCCA’s Track Night in America. The people were great and it was a very “docile” track day with mandatory point-by’s even in the advanced group. It was a great way to knock the rust off after a few years off the track.”
“Rob Fuller prepped the car a few days before and she behaved beautifully. I managed a 1:59 lap but I was lifting a bit going up to turn six because I was afraid of breaking the 90dB sound limit. Of course, Z-Car got a lot of love from the other attendees. :-)”
Enjoy this video of David’s Z in action with in-car and chase footage from Laguna Seca and more:
History
We met David and his newly acquired Z in 2005. Long before the days of Facebook and Instagram, our mutual friend and Datsun fanatic Tom Dockery referred David to ZCG:
“I’ve been working with Rob since February of 2005 when I purchased my 240z from a guy in Redding. It was a true barn car. He drove it down and Rob inspected it before I bought it. I didn’t know anything about the car except that I wanted something fun to drive with a manual transmission. I’d always thought the 240z was cool because my 5th and 6th grade teacher had one – and she was very cool.”
“The first weekend I had the car it rained really hard and I found out all the seals were useless. There was about a quarter inch of water in the car and mold had already started growing. I took it to Rob, and once the seats were out, and the carpet was out, and the seals were in, Rob suggested the Recaro seats, the roll bar, and harness. It was just about that time I did my first track day in someone else’s car, and I decided I wanted to track the 240z. And that’s when I started what I call the “accidental restoration.”
Paint/Body
While we do not have in-progress photos of the restoration, there are many shots of David enjoying the finished restoration. Our man William worked his magic to apply the Nissan 112 Paint (Tennis Ball Green). David recalls his vision for the Z:
“My goal when restoring was to have a track-ready, fun to drive machine that did justice to the original car. My car was originally orange, was red when I purchased it, but I wanted something different. That’s when I went with the tennis ball green color, which was one of the original colors. It was manufactured in October of 1971, so she turned 50 just last fall.”
Engine
Full engine bay services included re-plating and powdercoating parts. The L24 was replaced with factory-spec L28 with triple-Mikuni induction. A custom cam was designed by Rob for better top-end performance. The Z put down 167hp/174tq at the wheels on the ZCG dyno:
Interior
There’s very little on the car that was left untouched – David took pride in the interior:
“I pretty much went with Rob’s suggestions (pros and cons) and learned while I went along. The gauges were all me. As much as I liked the originals, the were just too dim and difficult to read at night. I replaced them with white-backed Autometer gauges but kept the green backlighting. I also kept the original turn signals and embedded them in the new gauges. I didn’t keep the clock, and the fuel gauge is the carbon fiber reinforced glove box.”
More details like Recaro seats, Roll bar with 5-point harnesses, updated fuse box and high voltage bypass for the steering column, 260z lighted console panel and Sony bluetooth radio. Outside, Euro tail lights with LEDs:
Z Car Garage Big-Brakes
David’s Z was the first one to receive our Z Car Garage Big-Brakes. This was our initial (2008) setup utilizing Stoptech ST-40 calipers and our own brackets. We had extensive track testing with pro-driver David Ray:
We have Enjoyed the Ride with David at many events over the last 17 years. Most recently I got to catch up with him at our New Nissan Z event. His Z still looks amaZing!
Here are few events from years ago with David…some of you might remember attending these too!
2008 ZONC Blackhawk Museum Car Show
2010 and 2011 Palo Alto Concours d’ Elegance – the crowd loved his Z car!
2008 Motoring J Style…remember we had a superb turnout for the caravan starting at Z Car Garage!
2008 and 2011 Silicon Valley Auto Show at the San Jose Convention Center
Long Live The Z!
Thank you David for your support and friendship all these years. We love that you keep your Z on the road and it makes you smile behind the wheel whether its on the track or or street. Stay tuned as David will be returning to ZCG later this year for 3.1L engine upgrade! More pictures in the gallery below… …[read more]
We love to see our parts installed and used on client’s cars. Race car driver and restoration specialist Jim Froula of Racecraft is running our ZCG CV Axles in this Nissan IMSA GTU 300ZX race car!
Jim installed CV Axle set #269:
The George Alderman Z31
Over a 49-year competitive career, George Alderman was one of America’s most successful sports car drivers, racing in Sports Car Club of America (SCCA) and International Motor Sports Association (IMSA) events.
In the 60’s and 70’s George would race a variety of cars. He won the IMSA Baby Grand championship in 1971 in a Datsun 510 and in the 80’s he drove Z cars in the Camel GT series. His Z31 would run both turbo and NA classes for IMSA.
Out of 70 starts he had 50 top-tens, 27 top-fives, and 5 wins, all while successfully running his Datsun/Nissan franchise. (Below) a 1988 promotional photo of the Z31 in front of Alderman Nissan, in V6 IMSA GTU class trim. Find more history on this Z as documented on Alderman Machine.
Restoration at Racecraft
Jim and the RacecraftNW crew restored the George Alderman 300ZX. As usual, Froula’s painstaking efforts and diligence result in a faithful restoration. Original frame (left) and restored with chassis parts:
ITB induction on the NA VG30E powerplant:
Bodywork going on, and look at those Panasport C8 wheels!
Thanks for your support Jim! We are excited to see the Z31 back on on the track.
Z Car Garage CV Axles
Over 150 sets of our ZCG CV Axles are installed in client’s cars all over the world. 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.
Filed under: 240z,Events,Racing
by Alvin G @ 5:10 pm on January 17, 2022
Dear Zcarblog readers, it’s been a busy year and we are catching up on blog posts, so please enjoy our belated race report from November 2021.
WE LOVE RACING! On November 11-14 we attended the Velocity Invitational at Weathertech Raceway Laguna Seca. Z Car Garage had a blast racing and supporting several client’s IMSA GTU Z cars running in Group 7A (1966-1977 IMSA GT). 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.
Photo by Larry Chen
Z Car Garage IMSA Race Car Support!
If you missed our earlier post, we prepared and supported three IMSA race cars for the Velocity Invitational (VI). Here’s a quick review:
We supported our client Randy Jaffe who recently acquired the Transcendental Racing Datsun 240Z. This famous 1976 IMSA-GTU Championship-winning 240z will be driven by ex-driver Brad Frisselle’s son, Brian Frisselle. Randy recently had the Z re-painted by William with correct graphics and hand-applied livery by the Real Ralph.
#93 Different Drummer Racing Datsun 260Z
Race car driver, restorer and Datsun Historian Glenn Chiou raced his Ex-Greg Sorrentino IMSA 260Z. Glenn built and prepared this race car by himself, ZCG simply dyno-tuned it prior to race week.
Ready for some L-series music from these historic race cars on the dyno? Check out the video below and turn those speakers up!
We also prepared our client Kelvin Tse’s Porsche 911 RSR, because if it’s not the Z-car, it’s the P-car!
Epic Racing With Group 7
Photo by Kristina Cilia
Group 7’s IMSA GT and FIA race cars (1966 and 1977) was dominated by big-power Porsche 911 RSRs with a few BMS CSLs and 4 S30 Datsuns. Speaking of powerful Porsche’s, the organizers did not allow turbocharged cars to run so we thought an NA motor race would make things interesting. Read more about Group 7 here with driver Jeff Francis in Larry Oka’s 1970 Ex-Glemik IMSA Datsun 240Z (#54):
Friday’s qualifying race was eventful. Rob and Brian Frisselle were doing well and putting down some great lap times. Unfortunately, a Porsche oiled down the track between turns 4 and 5 and both Z cars skidded off the track. They recovered under their own power but the Frisselle Z sustained minor body damage from hitting the tire barrier. Good news: Glenn, Jeff and John Murray avoided the mess and Rob Fuller qualified on Pole Position!
Racing in to the Night
Saturday’s Group 7 would start at dusk, a rare exhibition for both drivers and spectators. I zipped up to my favorite vantage point at Turn 6 to catch the sunset. Auxillary lights were placed at each apex and few cars had headlights of their own to navigate the evening’s race. It was magical to watch. Here is Rob Fuller re-capping his sessions from the #49 Joel Anderson IMSA GTU 240Z:
“We had a great first session, made some adjustments to the cars and clicked-off good times. The qualifier was pretty scary as I lost control from a Porsche’s oil spill but I made it out ok. Brian Frisselle is an ex-IMSA professional driver and he safely negotiated the oil slick, avoiding a potentially severe impact with the sitting Porsche and softly hitting the tire barrier. I was surprised to make Pole-Position. Saturday’s evening race was intense. Though I started on Pole, by Turn 2 the Porsche gapped me 3-4 car lengths…
…We were racing our Datsuns with skilled drivers like Ned Bacon, Alan Terpins, and Martin Lauber in their multi-million $ Porsches. I was able to hold on to 2nd place, trying hard to reel Ned in but caution struck again, another Porsche had oiled down the track between Turn 5-6. Now its really dark and I’m trying to stay with Ned then I see these lights coming up hard on me and I know it’s Terpins. Tried to defend but he got around me. Honored to be amongst these guys who never let up. We finished the race in 3rd place.”
Enjoy this video we made highlighting the Group 7 races with in-car, Turn 6 and Goodwood livestream footage mixed in. Volume up!
You can see full, in-car footage from Rob in the#49 Joel Anderson IMSA 240Z over on his YouTube Channel, check out the Qualifying and Saturday Evening sessions. Here is Rob recapping the Sunday race from Group 7:
“Final race was midday with plenty of sunshine. Frisselle started 4th. Three lead Porsches took off, while Brian and I battled for P4. He then got around me and we both enjoyed the magic of driving our IMSA cars. Drivers around me were in expensive machines giving it 100%. Really happy to see 4 Datsuns in top 10 places. Honorable mention to John Murray (narrow body 260Z), Glenn Chiou did a really good job (Greg Sorrentino IMSA 260Z) and Jeff Francis (Ex-Glenn Klemik IMSA Z).“
Joel Would Be Proud
You might recall the story behind this special, 1972 IMSA GTU 240z as it was owned, built and raced in the 70’s by none other than Joel Anderson. ZCG restored #49 back to its former glory and it debuted at RMMR 2014. John Morton would drive #49 at RMMR 2015. Rob Fuller would drive #49 for the first time at the RMMR 2018. Joel was present at all of those events but sadly passed away March 2021 and we miss him dearly.
“This was unbelievable…driving the Z without Joel around was so emotional. Thinking about the fact that all of the vintage race support and seat time we have is all because we met Joel. He taught us how to be racers. His memory was shared by us all at the race.”
Privateer Spirit
Photo by Larry Chen
Our friend and Datsun Historian Glenn Chiou raced his Ex-Greg Sorrentino IMSA 260Z. It’s worth noting that not unlike privateers of the period, Glenn builds his Z cars, maintains and manages his racing efforts himself. Not an easy task so we applaud his work ethic.
A Fan-Friendly Race Event
Photo by Kevin Ehrlich
Formerly known as the Sonoma Speed Festival (2019), the Velocity Invitational re-imagined the vintage race experience with a Goodwood-inspired vibe. 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. It was a dream come true for me to share vintage racing with my family, they loved it!
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. Our family loved the artificial turf and hay bale seating lining the grid:
Though the fresh format was immediately enjoyable for spectators, it did come as a surprise to drivers and race teams. Rob’s initial reaction was met with eventual praise:
“Upon arrival to ‘Seca we knew this was going to be a different kind of event. All race cars were displayed together under white tents in the paddock for a Goodwood-like experience. It allowed spectators to see all cars within each race group but it was challenging for the team as our tools and support vehicles are usually near us. Initially we were intimidated but got the hang of it with just our essentials. The layout encouraged interaction and it was super fun to meet other racers, new folks and see old friends. Kudos to the organizers for doing something new and absolutely knocking it out of the park!”
Enjoy this video we made showcasing the sights and sounds of the Velocity Invitational. Rob Fuller gets interviewed by the Goodwood Livestream just before the evening race, and I included the lineup from my favorite vintage race group (other than IMSA), the Trans Am cars!
If you want to see action from the event in its entirety, check out Goodwood’s live streaming coverage Day one and Day Two.
Paddock Finds
At each corner there was something special in the paddock to see like exotics, Muscle Cars, personal sports cars and even Ragtime racers. The paddock never disappoints. Here’s a few of my favorites, more in the gallery! Where else can you see a brace of McLaren Speedtails, Lamborghini Mirua, Mercedes Benz 300 SLR and Lotus Cortina in one place!
Exotics abound with Bugatti and McLaren hypercars:
Really excited to spot this Datsun 240Z in the car corral…it is Z Car Garage client Matt K. Full report soon on this pretty Z car that features our Z Car Garage Big-Brakes (for small wheels) and Z Car Garage CV Axles!
We have more photos in the gallery below. ZCG would like to thank the following photographers for sending us photos from the event, you can click on their name to see their photo albums or Instagram handles: Kristina Cilia, Larry Chen, Pall Kornmayer, Todd Lapin, PnutProductions and Paul and Ann Devor, enjoy!
ZCG Race Crew
Huge shoutout to the Z Car Garage race crew including the Corwins, Meghan, Nick and Josh. We are grateful for your support, keeping us safe and on the track!
RADWOOD
Photo by Pall Kornmayer
The weekend of racing also included the popular RADWOOD car show. On Saturday and Sunday they are took over the famous island in the center of all the action at Weathertech Raceway Laguna Seca with a curated display of 50 of the most iconic, unique, and RADical rides of the era. Check out ZCG client Pall Kornmayer’s coverage in his photo album HERE:
People
We enjoyed spending time with friends and meeting new folks. The Velocity Invitational really helped create such a friendly atmosphere. Below: Larry Chen, Randy Jaffe with Brian Frisselle. Rob, Anna, Randy Jaffe, Brian Frisselle and his Dad Brad Frisselle. Brad is the original builder/racer of the Transcendental Racing IMSA GTU 240z!
Racing Legend John Morton and Sylvia Wilkinson were both present and having a blast. Yes, that’s Jim Froula of Racecraft photo-bombing us in back:
Meghan sporting the #49 Joel Anderson IMSA GTU livery shirt. More pictures in the gallery below!
Racing into 2022!
Z Car Garage is amped for this year’s race season. Here is list of events we will be attending. Please join us!
April
4/1-3 Sonoma with CSRG
4/21-24 Laguna with SVRA
4/28-5/2 Sonoma with SVRA
May
5/21-22 Laguna with CSRG
August
8/13-14 Laguna with HSR Pre Reunion ( NOT CONFIRMED)
8/17-20 Laguna with HSR Reunion ( NOT CONFIRMED)
October
9/30-10/2 Sonoma with CSRG Charity Challenge
9/13-16 Laguna VI
November
11/4-6 Thunderhill with CSRG
Thank you Velocity Invitational for an incredible event. We look forward to running with you again! LONG LIVE THE Z!
Last Friday we made some glorious L-Series music with two of our client’s Datsun 240Z cars. Gary’s Datsun 240Z, affectionately named the “Behemoth” has accumulated some mileage on the Datsunworks KN20 cylinder head and the dyno confirmed the same power level.
Khang’s 1973 Datsun 240Z was completed in October and he returned with 1,000 miles on the 3.2L L-Series. We adjusted the valves and double-checked power levels.
Happy to see both builds healthy and confirm power output. Enjoy the music from the both L-Series engines, sporting Jenvey ITB EFI managed by Haltech 750 Elite ECUs backed by the CD009a Six-Speed transmission. LONG LIVE THE Z!
