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More Upgrades For Ken’s Z32 TT

Filed under: Featured Cars and Projects,Performance
by Alvin G @ 12:12 am on April 19, 2013


Our last report on Ken’s 300zx included suspension and extensive power upgrades. Ken came back to ZCG for tuning and installation of:

-Ash-Spec inlet pipes
-BDE motor mounts
-Quaife LSD and 4.10 Leader Gears

Here are the new Ash-spec inlet pipes compared to the old:


You can thank your lucky Z stars for BDE low-profile Z32 motor mounts, a smart alternative to OEM that allows more clearance larger for intakes:

A set of 4.10 Leader gears along with a Quaife LSD were installed:

 Ken tells us that he feels a noticeable increase in acceleration and traction from the rear end mods. With Rob’s tuning the Z now puts down 418hp/396tq to the wheels!  Peak numbers may be nice but check out the overall gains…a solid 40-50 hp/tq improvement from 3500rpm to 6500rpm:

Enjoy the Ride Ken!




Take Your ‘Vette…I’ll Keep My Red Zed!

Filed under: Featured Cars and Projects,Performance
by Alvin G @ 11:37 am on March 2, 2011


In 1990 Nissan changed the Japanese sportscar world by introducing the Nissan 300ZX Twin Turbo. James L from San Francisco was ready to find out what all the excitement was about and purchased this gorgeous Red Zed. That’s right, he is the original owner!
Fast forward to fall of 2010…James kept this Z in amazing shape driving his machine only when the weather was right. No rain for this Z. It had been 20 years and there were 60k miles on the clock. He was reading about the new and improved Corvette and how this American sportscar was the end all be all. James even went to the extreme of renting one for a few days to see if he liked it. After 20 years could he really turn his back on the Red Zed?
No way!

After doing his homework on some Z32TT modifications, James found Z Car Garage. We met and he told me he had this Z since new and was finally ready to take it to the next level.
We performed a full inspection from top to bottom and found James’ Z suffering from common issues at his mileage. The clutch was slipping badly, as evidenced by the baseline dyno:

The transmission was removed and a JWT HD clutch with lightweight flywheel were installed:

The factory pre-catted downpipes are restrictive and large power gains can be found here so 3″ fully divorced downpipes from SpecialtyZ along with a full stainless exhaust system were installed.
Fully divorced downpipes:


The exhaust system consists of a 3″ mid-pipe with resonators ending with 2.5″ dual tip mufflers. Note the rusted factory resonators and restrictive piping:



The final before/after and how the Zed will look as it blows by those ‘Vettes :)

A common performance upgrade on the Z32TT is the air intake. Dual JWT POP chargers help in the breathing department, and look pretty cool too. Look how clean that factory airbox is!


The factory ECU was sent to JWT to get fuel/ignition re-mapping(Stage3) and boost raised from 7psi to 13.5psi. The revamped ECU, new exhaust/downpipes, and intake help put down an impressive 356hp/369tq to the wheels!
Whoa is just as important as go, so a full Stoptech sport/street brake package was installed. This inlcudes stainless steel braided lines, new rotors, pads and MOTUL brake fluid. The clutch hydraulics were also freshened:

Corvette Summer is on hold…its cold outside and as well all know turbos love the cold.

Enjoy the ride James!!!




Another Favorite Leaves Z Car Garage

Filed under: Featured Cars and Projects,Performance
by Forbes @ 10:14 am on September 30, 2009

It seems like we have been getting quite a few long-term project cars out of the door recently, and there are more on the way!!  This car has been in our family for a long time now and we have released it back into the wild to gain a few break-in miles before it comes back for its final tune.

This beautiful white 300ZX Twin Turbo is bound to make some huge power in the near future with it’s freshly rebuilt and upgraded engine.  I’m not going to spill any more details until I have a final post ready with dyno runs so you will just have to wait a little while longer, sorry.  If I recall correctly this car made a healthy amount over 600 wheel horsepower with the last engine, I’ll try to find a dyno print out in the next day or so.  Enjoy the new pictures and the suspense for the time being.

HERE is another post with some more photos of this car.




More Power Is Always Better

Filed under: Performance
by Forbes @ 6:43 am on August 14, 2009

We make Zs better.  It’s what we do.  In this case the customer brought us a fairly low mileage Z32 300ZX Twin Turbo that was in need of some more power.  At first we were headed down the normal road of simple exhaust mods consisting of new downpipes and mid pipes with high-flow cats when things got a little hairy.

We also had plans to place all four shocks, switch to braided steel brake lines for improved pedal feel, and install a set of Stillen sway bars for more stability in the corners.

As you can see from the baseline dyno (bottom of post) this car had serious issues when it came in.  The owner had reported hesitation and overall poor driveability and it was up to us to figure it out.  After the suspension and brakes were handled we dove head first into the quest for power.

The computer was shipped out to Jim Wolf Technologies for a reflash to accept the bigger NISMO 550cc injectors and added boost, we also picked up  a new clutch from JWT to handle the new power.  After all the modifications we completed the car was reassembled and test driven to make sure everything was copacetic.  Unfortunately it wasn’t.  All we could get out of it was seven pounds of boost.  Not good.

We suspected a turbo issue so the car was taken back apart for inspection.  The turbo had failed and was grinding the compressor wheel into the housing.  (see above photo, and for comparison see the other good stock turbo above)  There were metal shavings everywhere, really not good.  Now we had to get new turbos as well, and we were going to go bigger.

Jim Wolf once again came to the rescue with a set of their Sport 500 turbos.  They are the perfect combination for the power levels that we were looking for.  Now with no further complications everything was re-assembled and we proceeded to cycle countless quarts of oil through the engine to make sure we had all of the debris cleaned out.  Then it was back to the streets to do some test driving.  After another oil change we loaded the car onto the dyno to see what it could do.

You see from the graph above that the car has made a complete u-turn in both driveability and performance.  I’m happy to report that the customer was overjoyed when he drove the car for the first time after the upgrades.  That’s just the way we like it.

Long Live the Z