Greg S came to Z Car Garage for some bolt-ons on his HR-powered 350z.  We installed JWT dual pop chargers and a Bassani cat-back exhaust:

 

Intakes before/after:

Bassani exhaust:

 

Let’s take a look at what the bolt-ons do on the dyno. Starting with a baseline of 253hp/223tq the JWT intakes alone slightly increase peak hp/tq, with significant mid and upper rev range gains:

 

Adding the Bassani exhaust yielded greater gains throughout the rev range, netting +8hp/6tq over baseline:

 

An UPREV tune further optimizes these bolt-ons. Look at the huge low to mid-range gains of over 20hp/20tq! Peak numbers are 264hp/246tw to the wheels, a +11hp/23tq improvement over baseline with more power everywhere!

Enjoy the newfound power and sound Greg!

 

Josh R called us up for some free Z Car Garage swag.  Rob happily sent out a few things but they never reached Josh. This was unacceptable so Rob sent him a care package with key chains, shirts, lanyards and ensured delivery with the boys in brown.

 

Josh got finally got his swag and mentioned that he’d be back with his Z33 if he needed some tuning and we are happy to report that we worked on his Z recently!  We installed ART pipes, Motordyne MREV manifold /plenum spacer and finished the bolt-ons off with an UPREV tune.
Here are the ART pipes in place of the factory cats:

Before/after:

On the dyno we started with a baseline of 227hp/215tq and after bolt-on/tuning ended up with 254hp/233tq to the wheels:

Here is a breakdown of the bolt-ons and UPREV tuning.

Baseline to plenum spacer/manifold shows slight peak gains but significantly more midrange power:

 

UPREV tuning maximizes these bolt-ons yielding +6hp/7tq. Also note the increased rev limit:

 

The ART pipes really help in upper rev range increasing hp by 12hp. A final UPREV tuning session adds even more hp/tq:

Thank you Josh for coming to ZCG!

 

David Q is a new customer and came to Z Car Garage for some bolt-ons on his 370z.  We installed a Berk cat-back exhaust:

 

Stillen intakes and Motordyne M370z intake manifold:

On the dyno the motor dyne intake increased mid to upper rev range torque:

With the Berk exhaust and UPREV tuning even more low and high rpm hp/tq gains were seen:

Final results of 308hp/263tq to the wheels are improvements of +6hp/18tq. More importantly than peak gains, check out the significant gains in hp/tq from 3krpm all the way to redline where the Z makes almost +25hp/tq!

This 1973 Datsun 240z has a colorful history. Despite being in the hands of several owners it always finds its way back to Z Car Garage. Rob has worked on this Z since moving here to California from Georgia in 1998. Bought new in Buffalo, New York, this Z was originally owned by a doctor named Bill L. Bill had to leave the country abruptly and wanted Rob to sell it for him. Christian C. was looking for a project 240z and purchased the car, bringing it back to ZCG for a bunch of work. We removed the 32/36 downdraft webers and added triple Mikuni’s and exhaust with nice results. Christian was then called to duty and moved to Korea. Current owner Paul G bought the Z and brought it back to us for more upgrades and maintenance, again!

 

Paul’s Z needed new clutch hydraulics and tranny fluid. A common wear item on these cars is the hole for the clevis pin to operate the clutch master cylinder. Over time the pin enlarges the hole making shifting difficult. We welded up the holes and re-drilled so the clutch pedal feels just the way it should. In the engine bay things keep getting better for this sweet inline-6. The standard Mikuni manifold wasn’t the ideal setup for flow when running the triple Mikunis so in anticipation for more power we installed a TWM manifold:

 

Here is the old Mikuni setup compared to the TWM:

 

With the new manifold in place we were ready to extract more power on the dyno, however there was a problem with Paul’s carb linkage making synchronization difficult. The traditional solution is to fix the rather intricate linkage system and move on but we thought why not simplify it? The Z’s carb linkage, like many old cars consists of several plastic pieces, caps, levers, arms and bell crank…all parts that fail or gain excess slop from repeated adjustment and years of abuse. Linkages do look cool (or complex) but a much more straightforward solution is to use a throttle cable.

 

We are stoked with this setup because it clears up the engine bay, makes throttle response more direct and tuning easier. We are especially proud of this mod because of its total reversibility…one can go back to the OEM linkage setup say for that concours restoration or car show.  No holes are drilled. Win-win! More pics of the single throttle setup:

 

With the carbs sync’d we dyno tuned with excellent mid-range gains and peak numbers of 152hp/172tq to the wheels!

Paul we hope you like your new go-pedal and rest assured if you need more upgrades ZCG will be here to help!

 

At Z Car Garage we love to help people find the right Z. When our friend and fellow Datsun nut Eric G asked if we could help advertise his Z and find a good home for it, naturally we obliged! Eric owns several Japanese sports cars including a nice Datsun Roadster and this 1973 S30 was his autocross/drift daily driver:

 

This isn’t an ordinary Z though as it hides a complete 280ZX Turbo drivetrain swap including the L28ET, BW T5 tranny, R200 rear end and full disc brakes!

 

Old school Recaros inside the clean interior and a straight, metallic blue body make it a great driver. Rob thought this was a great fit for his friend in Georgia,  James A.

 

Before shipping the car across the country Rob modified the old-school wastegate acuator to allow a modest increase in boost. This resulted in +20hp/19tq to the wheels:

 

Loaded up…Georgia bound and ready to stay in the Datsun family!

 

We are happy to report the Z successfully made it to Georgia and James is already Enjoying The Ride!