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Twin Disco Potatoes: A 350Z Story

Old 12-10-2012, 04:55 AM
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Robert_K
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Post Twin Disco Potatoes: A 350Z Story

2003 Nissan 350Z Twin Turbo For Sale!
http://cgi.ebay.com/ebaymotors/2003-Nissan-350Z-Built-Twin-Turbo-HRE-Wheels-/151115116124?pt=US_Cars_Trucks&hash=item232f29ae5c#vi-content
In 2005 I traded in my 2003 Mitsubishi Evo 8 for a 2003 Nissan 350Z. So glad to be out of the DSM lemon and into a sport car! Front engine, rear wheel drive is the only way to go! At the time I was stationed in Colorado and the elevation killed the naturally aspirated VQ35DE power. Dyno results showed a 30whp lost due to the elevation. Only way to overcome this power loss was a power adder… Or two.


First day of ownership


Baseline Uncorrected Dyno

In 2008 I went with the JWT 700BB Twin Turbo kit sporting the famous Disco Potato GT2860RS turbos. Funds were limited so I stuck with the stock block. End result was an average of 420whp and 400wtq at 10psi. To help stop the extra power StopTech ST40 & ST22 big brakes were added. A JWT clutch and flywheel was selected to take the boost abuse and a TurboXS UTEC for tuning.

In July of 2010, back home in Houston, the OEM 2003 weak transmission finally give out and I lost third gear on a fun run. Funds were ever more limited so I parked the Z. I told myself I wouldn’t fix the trans unless I was ready to build the block at the same time. A lot of reading, telephone calls and, research ensued.

December 2011 I called Bryan at PowerFab Automotive and told him I’m ready. Kyle and Brett at Import Parts Pro were next and an IPP Stage 3 VQ35 long block sporting; PolyDyn coated CP 8.5:1 pistons, Cosworth Rods, JWT C2 cams, ARP L19 rods and bolts, heads & valve job and, all other supporting parts was purchased.


Being towed to PowerFab Automotive


IPP Stage III Longblock Coming Together

As time passed more and more was added. The UTEC had served it purpose but was very dated. HalTech released their full ECU replacement Platinum Pro Plug-In EMS and I knew that was the only was to control & tune the new engine. The JWT clutch just wouldn’t take the abuse of the extra power so a Carbonetic Twin Disc and flywheel was chosen. The OEM LSD was good but I wanted the best and so a Quaife diff went in. Since I have ambition to run the Texas Mile the taller 350Z auto, 3.3 final drive gear replaced the six speed manual’s 3.5 ratio.


UTEC coming out. HalTech going in.


Carbonetic Twin Disc & GT2860RS Turbos


Heat is always a problem in Houston and I didn’t want to worry about it. The Nissan Pathfinder cooling mod was installed on the block, a Koyo oversized radiator was already installed and I had everything PolyDyn coated. All piping, the down pipes, exhaust manifolds and, turbine housings. To finish off the exhaust I went with the Greddy RS catback.

The Hotchkis springs were another item that have served their purpose and I wanted the best again. KW V3 coil overs were installed with SPL camber arms and links. I retained the Hotchkis adjustable sway bars.


StopTech ST40, KW V3 coilovers and, SPL A-Arms

As far as the body components, the Z went to PowerFab with an AeroSync N1 front, Seibon TS carbon hood, Nismo sides, CraftSquare mirrors and, Seibon TT carbon rear lip. OEM 2006 LED tailights were already installed as well. A Seibon TT carbon rear spoiler is waiting to get installed. OEM 2006 Bi-HID headlights were sent directly from Courtsey Nissan to Ceasar at LightWerkz. The headlight housings were painted a flat black. The HID shrouds were left silver and a LED halo-ring was added beind. JDM STi lenes were added along with 6000k bulbs.


Completed with body components w/o LightWerkz Headlights

Interior is pretty much stock. Defi boost & fuel pressure gauges along with a dual wideband gauge are installed on the pillar. A custom OEM carbon fiber steering wheel was added. A Pioneer Avic headunit, JL Audio componets and 10" JL W3V3 powered by a JL 500/5 amp provide music and movies.


Interior

To finish the car I wanted new wheels. I had been researching a lot of different wheel companies to replace my WORK Meister S1s. I wanted a custom offset and I wanted the best in the industry. So I made contact with Tony at Deviate Motoring. I knew I didn’t want a three piece wheel again and that a mono block was my only route. I place an order for 19" HRE P43SC wheels wrapped with Toyo R888 R-compound tires.


19" HRE P43SC Wheels w/ OEM Center Caps

Car is currently about 95% finished. Pump gas results were 551whp & 559wtq at 16.5psi. Waiting on Shell to release their updated URT Advance unleaded race fuel for race gas tuning. Richey’s Collsion are in talks with a new shade of black paint. Steve from Executive Auto Detailing was used to detail the car before the Visual Velocity-Studios photo shoot.
~Written by Robert O’Brien






Last edited by Robert_K; 09-03-2013 at 01:28 PM.
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Old 12-10-2012, 05:09 AM
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350Zdj
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Amazing transformation.

So basically your Z was garaged from Jul 2010 to Dec 2011 while saving up for the epic build? That's a lot of patience right there man.
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Old 12-10-2012, 05:12 AM
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Great write up I really enjoyed reading it. You have a beautiful Z!
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Old 12-10-2012, 05:19 AM
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Very nice. Gorgeous car!
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Old 12-10-2012, 05:30 AM
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Nice read and evolution of your Z!
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Old 12-10-2012, 06:16 AM
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Nice write up, love the car

Only thing I think is missing is blacking out the rear emblems to complete the look
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Old 12-10-2012, 06:24 AM
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Looks amazing. Definitely one of my favorite Zs.
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Old 12-10-2012, 06:44 AM
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Very nice Robert! Looks like my thread has inspired some to tell the stories behind their Z!!

Glad you stayed with it!

Chris
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Old 12-10-2012, 06:50 AM
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Thanks everyone.

Originally Posted by 350Zdj View Post
Amazing transformation.

So basically your Z was garaged from Jul 2010 to Dec 2011 while saving up for the epic build? That's a lot of patience right there man.
And from Dec 11 till Jan '13 before it's 100% completed and I get to enjoy it. A lot of long nights thinking; "I should've sold it."

Originally Posted by SirSpeedyZ View Post
Nice write up, love the car

Only thing I think is missing is blacking out the rear emblems to complete the look
I want some contrast.

Originally Posted by NA&CH View Post
Very nice Robert! Looks like my thread has inspired some to tell the stories behind their Z!!

Glad you stayed with it!

Chris
Thanks Chris. I wrote this about two-three weeks ago for magazines I'm seeking publishing my car. Just thought recently to share it on the forums.

Hope you're enjoying your new boost.
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Old 12-10-2012, 07:03 AM
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Nice car. What kind of cooling upgrades did you get for built motor/twin turbo?
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Old 12-10-2012, 07:08 AM
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Originally Posted by Robert_K View Post

Thanks Chris. I wrote this about two-three weeks ago for magazines I'm seeking publishing my car. Just thought recently to share it on the forums.

Hope you're enjoying your new boost.
Truth! Hope to see her in a Mag soon... I am loving it!

Chris
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Old 12-10-2012, 04:56 PM
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Amazing! Ever thought of getting the calipers powder coated yellow? I think the contrast would make it look even better.
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Old 12-10-2012, 05:24 PM
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Originally Posted by Kimosabe View Post
Amazing! Ever thought of getting the calipers powder coated yellow? I think the contrast would make it look even better.
No. I like the silver/black theme.
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Old 12-10-2012, 05:45 PM
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Originally Posted by Kimosabe View Post
Amazing! Ever thought of getting the calipers powder coated yellow? I think the contrast would make it look even better.
I was thinking the exact same thing! I think yellow would look great. But the subtle look of the silver keeps it OEM looking and understated (a good thing). Always function over form. Really great job with the car overall.
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Old 12-10-2012, 06:19 PM
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Love it!
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Old 12-10-2012, 06:49 PM
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Meh!
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Old 12-10-2012, 06:54 PM
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Very nice, cool story too
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Old 12-10-2012, 06:54 PM
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Cool story, bro! Glad to hear the Z's almost done.


For those talking about yellow calipers on a tastefully modified black Z.. look up Kal-El's old Z -- one of the sickest!
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Old 12-10-2012, 07:06 PM
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congrats looks great so far!
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Old 12-10-2012, 07:10 PM
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Robert, your car is still one of my favorites!
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