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Six-Speed S30: Frank’s Datsun 240z

Filed under: Featured Cars and Projects,Maintenance,Performance
by Alvin G @ 4:27 pm on June 29, 2018

 

Frank B has been a Z Car Garage customer for many years. His stable includes an ultra low-vin Series 1 S30 (report soon) and this 1972 Datsun 240z that he acquired in 2005:

 

Affectionately named “Fuelie Z” this hot rod sports a fuel-injected Rebello 3L running Borla TWM induction.  The old-school setup utilized RC injectors, a composite intake plenum and Electromotive Tec3 engine management.

 

With powerful L-series motivation Frank wanted to improve braking and we installed one of our very first sets of Z Car Garage Big Brakes roughly 8 years ago. These large, 328mm units at all 4-corners performed admirably and fit nicely behind his vintage 17″ Chevlon Racing Mesh wheels:

 

 
 

Frank has enjoyed the Z for several years, attending local ZONC events and fun runs. Below left: The ZONC Blackhawk Museum Show in 2008!

 

After a recent meeting with Frank we agreed it was time to update this Z car and make it as smooth as we could. He was our first customer to run the new Z Car Garage CV axles. This upgrade really inspired him to continue improving the car:

 
 

Next on the update list, we were really excited to install a Nissan 350z 6-speed manual transmission behind the L-series in Frank’s Z. You read that right! S30 owners can now bolt-in this robust, 6-speed manual behind their L-series engine!  You might remember our first application of Austin Hoke’s custom 6-speed adapter kit on the OS Giken TC24B1Z-powered 240z:

 
 

Using the 6-speed conversion kit from Hoke Performance we installed a new CD009a transmission from the 2003 -2008 Z33 in Frank’s Z:

 

The kit necessitated exhaust header changes and after testing a variety of headers we found the Pacesetter 6-2-1 unit provided enough clearance:

 

We changed the exhaust and updated the driveshaft to an aluminum one. The old Spec clutch mated to the L-series transmission was removed and a JWT aluminum flywheel and HD clutch installed for work with the 350z transmission:

 
 

The 6-speed bolted in, more pictures of the install in gallery below:

 

The ZCG CV axles and 6-speed transmission transformed Frank’s Z. You can see the shifter location/operation in this video below. Enjoy!

 

Frank also asked why not update the engine management system and Rob said, “I’m in!”. Replacing the Tec3 unit we installed an Elite 750 from Haltech.  This is a wonderful stand alone ECU company with very user-friendly products we love to use on our S30 builds.

 
 

With dyno tuning we improved the drivability of Z in addition to significant power gains. Final numbers were 231hp/210tq to the wheels:

 

We received great feedback from Frank after 100 miles of mountain roads. His wife could even notice the difference: super smooth, seamless operation with fantastic throttle response and more power.  The Fuelie Z has been thoroughly updated, mission accomplished!  We love that Frank is Enjoying The Ride in his Z stay tuned for a full report on his Series 1 240z!

 

LONG LIVE THE Z!
More pictures in the gallery below!