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]
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!
It is always great to see friends over the holidays. Gary Savage stopped by Z Car Garage from Florida and shared these photos from his visit, enjoy!
(above) Randy Jaffe’s BRE Datsun 240Z.
One of the real joys this holiday season is the opportunity to say thank you and wish you the very best for the new year. From all of us at Z Car Garage we thank our friends, family and customers again for another exciting and productive year! Enjoy our 2021 recap and upcoming projects. Please note our holiday closure below:
ZCG will be closed from 12/24/21 and we will re-open for business on 1/3/22.
We had a busy year and though the shop will be closed, we won’t leave you hanging for the holidays. Many zcarblog features have yet to be published like our belated race report from the 2021 Velocity Invitational in addition to client stories.
Before we take a look back at highlights from 2021, here are several exciting projects coming along at the shop:
Jeff and Ryan B’s LS3-powered Z came to us for mechanical sorting. It’s now sporting our Z Car Garage Big-Brakes (for small wheels) and Z Car Garage CV Axles. Ryan successfully ran the Targa California Rallye in blistering summer heat. He recently got a new set of VOLK TE37V wheels full report soon!
The OMS Pace Car
This is a 1972 Official OMS Pace Car Duplicate. It is at present one of only two known survivors . Fifty were originally produced by Nissan Motors to commemorate the DATSUN 240Z being selected by the Ontario Motor Speedway to Pace the 1972 “U.S.A.C. California 500 Championship”. It really is a small Datsun world, as the official OMS pace car is none other than our very own Joel Anderson #49 IMSA GTU 240Z .
This OMS duplicate belongs to our long time customer and friend Linda. She acquired it from a family in SoCal and tasked ZCG with making it a nice driver. Full report soon but it got loaded up today for its journey to Colorado!
Jim’s 1971 Datsun 240z returned for a Rebello 3.2L with triple-Mikuni carbs on a Harada intake and CD009a 6-speed transmission:
David’s 240Z
Long-time friend and client David attended a track day at Laguna Seca. This Z was built over 15 years ago and sill running strong. We prepped his Z for the track, full report soon!
Dyno Tuning your 350z/370z/Q/G
We have been dyno tuning your late model Nissan/Infiniti sports car daily. Bolt-ons, UPREV tuning. Our customers leave happy with more performance. Call us to schedule an appointment! Here are just a few cars:
Aaron’s Q50:
Randy’s 1970 Safari Tribute Z lived an eventful life this year. It was in Los Angeles to be filmed for Nissan’s commercials and also served as Randy’s ride for cruising around Monterey Car Week. We installed a new engine and made some suspension changes. Though it’s back at home in Georgia it will get a full ZCG-style feature.
One of many Z32s we are working on, Steve’s will get a full report soon:
Highlights from 2021
Even though 2021 was crazy year for all of us we still managed to have fun on and off the track. The shop made some really great progress as well.
Enjoy these highlights from the year and Z you in 2022!
Datsunworks
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. You can read all about it HERE
2021 was a development year for this drivetrain setup. We continue to extract more power and run longevity testing with owner Gary who has the pleasure of living daily with this beast. More updates to come, but for now enjoy the music this KN20 head provides in the video below!
