Sam C lives in San Francisco and heard of ZCG last summer while at a local bowling alley near our shop in San Jose. His 1973 Datsun 240z had been sitting for several years and after reading zcarblog he wanted to bring it back to life.
We performed an inspection and found that the car needed attention in several areas. Starting with the cooling system, all hoses were replaced and a Koyo race radiator installed.
The problematic ’73 model SU carbs were replaced with earlier Z-Therapy units. All smog equipment was deleted. An MSA header was installed and the older igntion system was upgraded to Pertronix:
In short, we performed a mechanical resotorationthat this car could perform as it should after years of being idle, including a new battery and recharged the vintage air conditioning system. Here are a few pictures of engine bay completed and detailed:
With the engine bay sorted we turned to the chassis. The entire suspension was removed, dis-assembled and media blasted before sending off to be zinc’d and powdercoated. New parts consisted of 5-way Tociko struts with Eibach springs, MacPherson strut bumpstops, T3 adjustable rear control arms, and adjustable T/C rods and new wheel bearings. ALL bushings were replaced including the rack bushings, ball joints and front control arm bushings.
A set of gorgeous 16×7 11mm offset Panasports with 225/50/16 Yokohama S-Drive tires was mounted rounds out the chassis upgrades:
The ZCG Big Brake Kit
The pièce de résistance of Sam’s restoration is the Z Car Garage Big-Brake Kit for small wheels. With our pre-production testing finalized, we are happy to install the first batch on several customer cars like Sam’s, Glenn’s and others.
Following our successful, larger ZCG BBK, this smaller BBK was designed with Tyler from Stoptech as a direct bolt in solution for the 1970 to 1978 S30 Z cars. We’ve been with Stoptech since the beginning and love their products, we even came up with the slogan “Stoptech or don’t stop at all”!
Specifics
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
As installed on Sam’s S30, the brake kit is beautiful and functional. Track tested under hard racing conditions and rigorous street testing as well. Factory parking brake functionality is retained by operating a dedicated caliper:
This big brake kit will fit under 15″ wheels and some 14″ wheels. Once the BBK is available in our online store there will be a complete wheel fitment guide with printable caliper tool. Datsun 510 and Roadster brake kits coming soon!
Sam’s Z was detailed by our friend at JB Mobile and the paint looks great. Thank you Sam for letting us get your Z back on the road. Enjoy The Ride!
Steve M lives in the North Bay and has a really sweet collection of cars. His favorite car has always been this one-owner 1972 Datsun 240z with 50k original miles. Before we describe how Z Car Garage brought it back to life, let’s hear the history from Steve:
Back in mid-70s I was a car-crazy teenager already working on cars, buying and selling them, and always dreaming of my next sports car. With all the money I had saved from my paper routes I purchased my first car for $500, a red 1965 Ford Mustang and later a 1964 Triumph Spitfire. Shortly after I acquired these two cars, my parents moved. Our new next-door neighbor, Bob, had an amazing 1972 240Z that was white with a red interior. Other than an early E-Type Jaguar, I thought that the 240Z was the most beautiful car I had ever seen. Bob had bought it new, driving it mostly on weekends. I wanted a Z of my own.
Eventually I bought a midnight blue 1971 240z and Bob and I started to figure out ways to make our cars faster. We did everything ourselves from headers to suspension work. We even took a trip down the peninsula to FAR Performanceto see if they might sell me a race engine for my Z. Bob was an avid sailor and he had the “240Z” of sailboats: A 505. These dinghies were really fast but they needed a two-man crew and he asked me if I wanted to learn to sail. I said yes, and it wasn’t long before Bob and I had become the best of friends. I went through high school and college. Racing sail boats with Bob on the weekends, cars on the street and vintage cars on the track. I kept buying, fixing up, and selling cars. But in the early 1980s I sold them all, including the Z, an old vintage race car, and even an old E-Type Jaguar, to move to Europe for a few years.
When I returned, I started my own business and it went well enough that I was able to start another with Bob. Unfortunately, soon after it was evident that our first venture was going to be a home run, Bob was diagnosed with a very rare neurological disease. Within a year he had passed away, leaving his widow and two young sons. In his will, he asked that I take his sons out on my sailboat, to the spot in the San Francisco Bay where he taught me how to sail, so they could spread his ashes there.
Then one afternoon I received a call from Bob’s wife, Susan. She called my office to ask if I would be there that day and I looked out of my office window to the street below, as a flatbed truck was hauling Bob’s 1972 240 Z to my home. Bob and Susan’s boys had grown, married, and had kids of their own, but they all graciously decided that Bob would have wanted his Z to go to me. Over the next few of years, I managed to get it up and running, but don’t have the time I once did to tinker with cars, so never got it running as well as it deserved because it had been sitting for decades.
Making Steve’s Z a well-sorted driver
Steve brought his S30 into Z Car Garage in December 2015 and we essentially went through the entire car top to bottom to make it a good driver. He expressed his goal for the restoration and we worked with him to achieve it:
Rob seemed to be able to do miracles with my limited budget. Our plan was something akin to my plan in the 70s. Suspension and exhaust came first, then carburation, tranny, wheels/tires, then a bigger better engine, and a replacement of the Webers with Mikunis. Suddenly, the monster is back… only this time, it is under the skin of a totally stock 1972 Datsun 240Z.
We performed a full engine tune-up and got the car running after many years of sitting idle. The Z received a suspension refresh with 5-way Tokico struts, Eibach springs and a sway bar set from MSA. All bushings were replaced including T3 lower control arm bushings and new ball joints. The exterior was treated to Paintless Dent Removal and a new PPG windshield was installed.
Completing the vintage look are a set of 16×7 Panasports with 225/50/16 Yokohama S-drive tires. At Steve’s request we also installed a BRE spook.
That lovely red interior was revived with new seats and a carpet kit:
The engine bay and drivetrain needed some attention as well. Cooling system issues were addressed by correcting several leaks, installing new hoses and a Koyo race radiator. The L24 was mated to a 280Z 5-speed transmission and clutch. New triple-Weber carbs were installed and fed by our ZCG fuel line. A ZCG heat shield protects the carbs from a new MSA exhaust header that was finished with our custom exhaust system:
Despite the new Weber carbs we did not make power we were hoping for since the L24 was tired. All the work that was performed on the entire car made Steve happy, and he enjoyed the Z for a few years knowing a more powerful engine upgrade was in the works:
Everything about the form and function of this car is beautiful, and you have made it even better than originally intended. The smells, the sound, the feel, are all just right. The throttle response, the smooth shifts, the braking, and especially the handling are awe inspiring.
Time for more power
Fast forward to early 2018 and Steve had been enjoying this wonderful Z car since we worked on it. Over the last year Rob had been collecting parts and found a nice L28 engine that would be perfect for Steve. We removed the L24 engine:
Steve’s old L24 (left) and the refreshed L28 (right):
We gave the L28 a little refresh with a small cam and nice bottom end parts. The engine block was cleaned and painted Nissan Blue. A Mallory Unilite distributor and 280zx starter were installed:
A key change was switching from the new Weber carbs to triple phh44 Mikuni’s. This set was sourced from customer Tim N’s 240z as he is getting EFI.
With the new Mikuni’s and everything reinstalled the engine bay still looks great:
The Z ran extremely well with the Mikuni’s and combined with Rob’s tuning this Z had a dramatic boost in power. On the dyno the old L24 with Webers made 141hp/147tq to the wheels. The new L28 with triple Mikuni’s carbs put down 205p/200tq to the wheels:
I had a chance to take Steve’s Z out for a spin and it blew my mind. This is the kind of Z that makes me (a hardcore Datsun Roadster fan) want one for myself. It is the embodiment of just enough power, solidness, and vintage feel. Listen to this Z:
What more can I say? I really love my Z, and consider myself to be one of the luckiest guys on earth, to have found artists like Rob that help me keep my own dreams alive, running; well; and still ripping up the roads.
Thank you Steve, for sharing your story and letting us bring your Z back on the road. Tune in for the next chapter as Steve gets ZCG big brakes for small wheels!
Long Live The Z
We love to hear about Father-Son project cars! Liam O’s father has owned this ’72 S30 for many years and he wanted to restore it with him. They had the engine built by Rebello and a body shop perform final assembly of the the car. Liam was experiencing a heavy exhaust smell inside the cabin and it simply wasn’t enjoyable driving this beautiful Z. He contacted Z Car Garage and upon inspection we found several items needing attention.
First, we corrected some cooling issues and installed a Koyo race radiator:
Before we troubleshooted the exhaust/fuel smell in the cabin we fixed the exhaust system. This L-series cylinder head had square exhaust ports and the header that was installed on the engine had round ports:
We installed the correct, matching square port exhaust header (6 into 1) from MSA:
We replaced the exhaust system:
Next we tackled the cabin to seal out unwanted exhaust. The door seals were replaced:
The venting for gas tank and associated vapor hoses were all replaced. If they’re old and sweating fuel vapor you will smell fuel inside the cabin. If the car is not sealed up, you will smell exhaust. Sometimes it can be overbearing:
William painted hatch area to get a nice seal on the weatherstripping/seals:
We ended up going through the entire car, adding some nice ZCG touches along the way. The engine was treated to a major tuning session on our dyno:
The Rebello 2.8L street engine with SUs made 168hp/171tq to the wheels:
Engine bay all buttoned up:
More little things like painting the brake booster. We also went through the entire braking system:
It’s no mystery with the Z’s hatch design and aerodynamics that having no seal (or a compromised one) in that area will result in exhaust smell in the cabin. After we worked on Liam’s car we had reduced the smell, but it wasn’t totally gone. We have our own apparatus to run a smoke test inside the car to visualize leaks. We sealed it up and took it one step further by adding a high flow cat in the back of the exhaust system. Now Liam is driving this Z all over the Bay Area and he is tickled pink about it. So are we.
Rob and the crew realized that all six of these S30s were being worked on and a brilliant photo ensued. Great shot Josh! Expect full stories on these Z’s coming soon to the blog. From left to right we have Glenn’s 1972 RHD 240Z-L, and Art’s 1972 240z:
Ben’s 1974 260z:
Rob’s 1971 240z (aka Butterz)
Erich’s 1973 240z
And Steve’s 1972 240z (white)
Rob couldn’t help but add some Van Halen moves. He’s got it bad for Z cars!
Art H. has owned this 1971 S30 since it was new! He had driven and enjoyed it for years but in the 80’s left it parked indefinitely in his garage…sometimes life gets in the way. Now retired, his family discussed moving out of San Jose to the Sacramento area and the Z had to move with them as well. Art was ready to get the Z back on the road so he met with Rob and went through the car.
A little background on Art…turns out he has an absolutely rad motorsports history! Back in the 70’s he was an SCCA racer, Datsun lover and tinkerer and all-around car enthusiast. Art kindly sent us these photos of him racing Formula V at Sears Point Raceway. He’s the young lad in the race-suit, long hair and ‘stache:
*Eagle eyes will note the Datsun 510 and other cool vintage cars in the paddock!*
The plan for Art’s Z included a mechanical and chassis restoration. As shown above, the Z had to be towed to the shop because the L24 engine had seized from sitting for decades. Teardown revealed severe corrosion:
Our first task was to remove the engine/transmission and prepare the engine bay to look nice again. All accessories, hoses, hydraulic lines were removed and sorted. A/C components from back in the day removed and many parts were powdercoated:
The engine bay was in good condition:
We repaired and refurbished the heater core and removed the crazy 70’s-style stereo business:
The transmission was resealed and a new clutch was installed:
The new heart for Art was a fresh Rebello 2.8L stock-style rebuild using Z-Therapy SU carbs:
Other items in the engine bay included a new battery, upgraded 280zx alternator, Pertronix ignition, MSA header and Koyo race radiator. The engine bay looks fantastic now:
(More pictures of the restoration in the gallery after the jump)
Chassis work included a complete braking system overhaul with new wheel cylinders and drums. New T/C rods, rack bushings, ball joints, steering couplers and stock-style KYB gas shocks return tight handling the Z is known for.
Stock half-shafts were replaced with Ermish Racing CV axles. FYI ZCG will be making CV axles for high horsepower Z cars soon!
Full fuel tank refurbishment. Corrosion and disintegrated fuel hoses were replaced:
Our ZCG 2.5″ exhaust with Magnaflow resonator/muffler and slash-cut tip:
Finally, the only cosmetic detail we handled was to repair the rear bumper and brackets:
Art wanted to keep the stock dealer option slotted mags so we installed new 195/70/14 tires. With a rich motorsports background and a passion for cars it’s easy to see why Art loves his Z so much. It was a pleasure working with you and Long Live The Z!
