Z1 Performance's Z33 - 320whp NA!!!

Kwame_z1

Member
We are a new sponsor here and we just wanted to share with you our shop car. It's not an FX but it shares the same motor and any true automobile enthusiast can appreciate the work we put into this car....

Some of you might have seen this on other forums but I figured I'd post it here for those who have not.

This is from the initial build thread, the car has since been tuned to make an additional 20whp and is currently at 320whp.

But first, a prologue :)

Hey all - as some guys here know, I've been doing an NA build on my own car for quite some time. It started about 2 years ago when I acquired a spare set of heads, and some Tomei cams. After much time spent with the flow bench, and a variety of other tools by my machinist, as well as assistance from some Japanese shops (notably MCR (Matchless Crowd Racing), and one of our suppliers in Japan, we had a set of heads completed. The original goal was to put those onto my stock block with a set of DC Sport headers that had been given to me, and see what could be done. Unfortunately, time was not something we had alot of, and the project got side tracked. While I did have some bolt ons done (netting 268 whp back in December 2005 when I did my UTEC install), I never quite got around to doing the headswap.

Fast forward to Fall 2006. A customer called us from Michigan and told me a story of his 2004 Z that had been totalled at an event. We ended up working out a deal for his longblock, in exchange for parts he wanted for his new Z. Now that I had a spare block...the "What the hell" factor took over, and I decided to build a block to go with my yet-unused heads :)

The goal on this car has always been a setup that can run in all 4 seasons, is not built or tuned to the ragged edge, but rather, a more reliable approach. I have other cars, and while the Z is a toy of sorts, it gets used quite alot (50k miles since getting it Fall 2003). In the spring, summer and fall, its basically my daily driver so long as the weather is nice.

Ok, so what did it make and what does it have?

Here are the details on the build. I think it encompasses what a good, NA build should...every detail that needs addressing was addressed. Yes, there are things I can change to net even more power, and some of those will be explored going forward. My goal from the outset was to break 300 whp, to give me a good platform with which to really learn the black art secrets of NA power on the VQ.

So what does the motor build consist of:

Internals:

Weisco Pistons (.020 over stock)
Eagle rods
ARP rod bolts
Fully balanced and blueprinted - not only balanced as individual components, but also balanced as a rotating assembly
OE Nissan bearings
Full Ported and polished heads
5 angle valve job (stock Nissan valves)
Tomei 268 cams (268 duration, 10.5mm lift)
NISMO valvesprings
NISMO headgaskets
Lots of time spent porting stock, non rev up lower plenum -we logged over 100 hours between the heads and plenum, going off recommendations from MCR Japan, as well as things we found on our own.
Motordyne 1/4 inch spacer
Unorthodox underdriven crank pulley
New: water pump, rev up oil pump, idler pullies (OEM)

Final Compression checked in at 11.3:1

Misc Power Stuff:

Gruppe-M Carbon intake
3 inch MAF housing
Crawford headers
HKS DLI II
NGK Iridium Plugs (LFR6AIX-11_
Sun Hyper Ground
Fujitsubo Y pipe
Fujitsubo Legalis R Titanium exhaust
Resonated test pipes

Drivetrain:

OS Giken Super Single Clutch/Flywheel with Aluminum cover
3.9 final drive
Cusco RS LSD
NISMO finned diff cover

I think that covers it mod wise (engine related)

some pics of the motor:

adamenginenew3.jpg


adamengine1.jpg


Pics of the clutch (yes we balanced the clutch, and even the pulley, to 10k rpm)!

clutchbalanced.jpg


My old motor out of the car

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newpicsengine2005.jpg


Some pics of the assembled Motor (my favs...it looked so pretty on the stand)

adamnewengine1.jpg

adamnewenginew4.jpg


Ok ok ok...so what did it make?

Dyno Sheet:

This is on pump gas, done yesterday in Norwalk, CT. I've known the owner of "The Shop" for years, and he was good enough to fit us in on short notice right after the holiday. For those who don't know this place...you might remember a certain black 911 TT that duked it out with Turbo Tito (white 911 TT) back in the earlier days of import drag at E Town? The car is owned by the owner of "The Shop".....they do some insane builds there. Tuning was done by another good friend, Junior Barrios, whom I've also known for a long time. One of the best tuners I know, listens to exactly what you wants, and does it right. I have recommend a ton of our local NA and FI customers to him, and all have walked away with terrific results.

Anyway, here is the sheet:

adamdyno7-5med.jpg


As you can see from the sheet, it pulls very, very nicely, from about 3500 to redline, which is currently set at 8,000. The tune was done on pump gas. It also was insanely humid yesterday too, so I am looking forward to going back as we test more parts for the car, and hopefully get a bit cooler of a day with lower humidity, just to see the results

What does it feel like? Compared to where it was before (268 whp), it's a completely different animal! It pulls with reckless abandon to redline, and just loves to be rev'd out. Power is also very very linear...it just keeps pulling. The combination of the lightened internals, the lighter clutch (saved about 25 lbs there alone), the lighter pulley, and the 3.9 gears is an absolute BLAST!

Anyway, that's what I have to report so far. In the upcoming weeks I plan on testing a new throttle body, and I am very much looking forward to putting the Cosworth intake manifold through it's paces. I'm now determined to see what can really be unlocked from the motor having met the goal for round 1. My overal "cause" won't change...I want an absolutely streetable car, that runs on pump gas, with good driveability characteristics, but with a substantial increase in power. The NA game is very time consuming, as it takes alot more research, and sometimes alot more work than going FI, but I welcome the challenge, and hopefully, what we find will benefit the community as a whole. In addition to what you see above, the car has undergone a complete remodelling, with new wheels, new brakes, new body kit, and I'll be showing pics once the paintwork is complete (we're starting prep work this weekend with any luck). I am hopeful you guys will like the final result...as I picture it in my head, I think you will! Right now, I'm going to wash her down and take her for a ride.
This after the second audio build we did in the car...

This is the second install in this car. The previous install consisted of:


  • Kenwood DDX7015 Headunit
  • McIntosh MC431 Amplifier
  • Focul Utopia 6.5 2-Way Components (Mids in the door, Tweets Custom Molded into the stock Kickpanels)
  • SEAS Lotus 10 inch subwoofer. The sub box is all MDF (no glass), and is ported.
  • Tsunami 5 farad cap
  • Dynamat Extreme throughout


Here are the pictures from the initial install.

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P1010539.JPG


The sound quality was not bad, but we knew there was definitely room for improvement.

So this time around we made some slight changes. The latest install consisted of these changes:


  • Replace the Kenwood DDX7015 with McIntosh MX406 headunit
  • Replace McIntosh MC431 with MCC406M amp
  • New seats! (took out the red Brides and replaced them with something ultra ultra rare!)
  • Custom alcantera work for certain key interior spots (more on this in pics to come)
  • McIntosh sub bass controller (in the coolest spot ever!)
  • Sirius tuner mounted in factory cubby (my car has no nav) with stealth mounted antennea
  • Drill out factory door speaker grilles and re-wrap in windsong
  • Ran new power/ground wires (now 4 gauge) from cap to amp


We retained the Focal Utopia fronts, and SEAS Lotus 10 inch sub.

On to the pictures, not the best but you get the idea...

adamnewamphu%20002.jpg

adamsirius1%20001.jpg

adamnewamphu%20005.jpg

adamnewpicsfeb11002sm.jpg

adamnewpicsfeb11door.jpg


Our thoughts...



Here are some exterior shots that are a few months old. Obviously the major difference would be the seats are black and no longer red.

adamdecembernew1.jpg

adambrakesnew1.jpg

adamnewrear1.jpg

adamenginenew5.jpg

adamz33newside1.jpg
These are the most recent photos taken back in May 0f this year...

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Zdayz072copy.jpg

Here are two videos of the car...

(This video was at 300 whp)
YouTube - Sexy 300 WHP 350Z

YouTube- Z1 Performance 320 whp dyno pull

Currently the car is down as we are making more improvements to it. We are not done with the car yet and have plans for even more NA power, be on the lookout.
 

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Last edited:
Nice read.
Tastefully done all the way. The standalone engine shots are awesome . . . my new desktop? :smile:
 
I hear 376 on a hub dyno is the reigning champion?

What was the reason for going with such low compression on a NA beast? I do remember a 15:1 build not showing much improvement as the compression ratio went up and up, but a sweet spot being somewhere in the 12's or 13's...?
 
I hear 376 on a hub dyno is the reigning champion?

What was the reason for going with such low compression on a NA beast? I do remember a 15:1 build not showing much improvement as the compression ratio went up and up, but a sweet spot being somewhere in the 12's or 13's...?

I have yet to see a legit 376 on any daily driven street car. As far as I know, this is the highest horsepower all-motor VQ35 Z in the U.S.

We choose the compression we did for several reasons. First, we wanted to demonstrate what we could do with all off-the-shelf reasonably priced internals. If you look at our parts lists you will see that nothing is special order or custom made (parts-wise of course, I'm not talking about the porting and polishing). Secondly, we wanted to insure that we could drive this car cross country without having to worry about finding a gas station that carries race gas so that we could fill up. The higher the compression that less likely it will be to do that and as you pointed out we did not see that there was much to gain from the higher compression that would make it worthwhile to limit the type of fuel we could use.

We have another build underway on my own personal Z that is a little more extreme of an NA build. We will let everyone know when that project is completed.
 
Very nice Z and great numbers for a NA Z. The exhaust note is not my favorite though.
 
I love the Simple but aggresive Facia that you chose for you Z.. WOW...

Looks like it's ready to kick ass.
 
I'm as impressed with the audio, love the mcintosh, one of my favorite amps, only a real diehard would consider that headunit too. great components & the tweeters in the kicks, awesome... must image nice...what are you using as a processor?
 
I'm as impressed with the audio, love the mcintosh, one of my favorite amps, only a real diehard would consider that headunit too. great components & the tweeters in the kicks, awesome... must image nice...what are you using as a processor?

Thanks everyone!

We are not using an external DSP in this setup. We really didn't find the need for it as the car sounds amazing with just the equipment you see here.
 
as amazing as it sounds, a car will always absorb some frequencies & reflect others, a car will always alter the perfect reproduction of sound, a little tweeking can really make the car transparent with a good system, have you ever RTA'd it?

to me, that's the perfect SQ setup, just 5 drivers, & the tweeters down low in the kicks is real old school, really helps create a single point source & awesome imaging & sound stage, just a bit of tweeking the response & your a competition system with your setup...

sweet ride:smile:
 
I hear 376 on a hub dyno is the reigning champion?

What was the reason for going with such low compression on a NA beast? I do remember a 15:1 build not showing much improvement as the compression ratio went up and up, but a sweet spot being somewhere in the 12's or 13's...?

the difference between 11.3, 12.0, even 13.0 on pump gas is minimal. On race gas it might (might) make a difference
 
as amazing as it sounds, a car will always absorb some frequencies & reflect others, a car will always alter the perfect reproduction of sound, a little tweeking can really make the car transparent with a good system, have you ever RTA'd it?

to me, that's the perfect SQ setup, just 5 drivers, & the tweeters down low in the kicks is real old school, really helps create a single point source & awesome imaging & sound stage, just a bit of tweeking the response & your a competition system with your setup...

sweet ride:smile:

at some point I might do a dsp, but right now I am more than satisfied with the equipment as it sits :)
 
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