Kevin's VQ35DE NA Build Epilogue..
 

Everyone asked why I had no threads up on the forums for the most part, I decided to throw up all the R&D and new things that were brought to the VQ35. Here's a mod list and tons of pictures of the stuff we're working on. Enjoy :wave:

Current Setup:

Short Block :
Wiseco 96MM (.020 over) 11:1 High Comp Pistons
Eagle H Beam Rods and ARP Rod Bolts
ACL Thrust Washers/ACL Rod Race Bearings/ACL Main Race Bearing Set
350z HR Head Gaskets
ARP L19 Head Studs and ARP Main Studs

Heads :
JWT C-8 Cams and JWT Valve Springs/Retainers
Headwork = Full port job maximizing flow
M2 Serdi Valve Job - 3 angle cut

Stock - 188.8 @ .200"
281.2 @ .500"

Ported - 228.9 @ .200"
318.7 @ .500"

Tuning : Full standalone, Pro EFI - Pro 48 ECU

Misc :
Custom Billet Steel Flywheel
Walbro 190 Fuel Pump and Bosch Fuel Pump
ProEFI Flex Fuel E85 Setup
Southbend Clutch

Intake : Jenvery Individual Throttle Body Setup.

http://i101.photobucket.com/albums/m...1-04164056.jpg

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http://i101.photobucket.com/albums/m...1-04164113.jpg

http://i101.photobucket.com/albums/m...1/DSC00435.jpg

WOW Thats amazing

Thats gotta feel nice in that light *** sentra

I wonder what it would do with those kelford 302 cams LOL

http://i101.photobucket.com/albums/m...1/DSC00424.jpg

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http://i101.photobucket.com/albums/m...01/engine1.jpg

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http://i101.photobucket.com/albums/m...pipercross.jpg

http://i101.photobucket.com/albums/m...en101/VTAC.jpg

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YouTube - nice clean 300whp

YouTube - Spec V VQ35DE ProEFI Pro48 / JENVEY ITB / JWT C2 Cams 315WHP dyno

YouTube - Spec V JENVEY VQ35DE ITB

YouTube - Spec VQ vs GTR, some 12s

Just a few videos of the dynos and some racing.

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talk about area under the curve :noes:

good stuff :D

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Man mad props, this is serious stuff. I have no regret having built my motor for FI, but these numbers are amazing NA. Cant wait to see more of this project, I subscribed.

Good job man.

What kind of exhaust system does it have right now? Wondering if you guys have a free flowing exhaust or a cutout (since they have proven to always add power)

:eek: OMG! What AFR were you tuning to?

I want those cams...:drool1:

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2.5?!

You haven't considered using a cutout? I guarantee you'll gain even more power/torque, FACT!

and a custom header setup like I had will net even more..

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Id like to disagree with what they say, Aaron for example has proven that a cutout NA will always provide gain (back to back dyno's ever since his had the stock 3rd gen motor on his car to now with a vq35). and I even gained power from a cutout years ago on my NA VQ30 (I too had a 2.5" exhaust and no cat). Just try it, you'll see that you will gain.

noneless sweet build, is this going to be a track only car?

Great job Kevin! You will definitely gain power from a cutout.

Here's my dyno thread. I have a good comparison of dyno runs with and without the cutout being open. This is compared to stock Bpipe and muffler which is very restrictive. I gained 20hp every time the cutout was open. And in the 1/4 mile, I consistently shave .15 to .2 just by having it open. Also, we made over 20 passes with the cutout closed and 20 with it open. Each time, it showed roughly a 20hp gain without a loss of power anywhere in the powerband.

http://forums.maxima.org/dyno-discus...244ft-lbs.html

I can't wait to check out your car. I'm in Palm Beach county quite often with my Maxima. I'll be sure to give you a call next time I'm in town.

I agree with everyone here on the cutout. Last year we ran a open exhaust with two EVO 8 resonators. Switching to the open exhaust netted us at least 11hp with the QR.

For the VQ, we are considering keeping the banks separate. Two pipes out the side.

Regarding the ITBs, do the stacks fit into a plenum.. eventually? Or I assume you'll run filters..

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patient guys , its still in a working stages and he hasnt even break a sweat yet.

But the car pulls really hard in 3rd , theres always more room to improve.

we'll get some more time into between TPS and Emerald Performance

Should be fun !

I'm not rushing Kevin, I was just curious if they are filtered.

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That pull looked pretty damn good. :)

Nice job Kevin. I know the kind of effort and time that goes into a build like this. Which model Dynojet did you dyno on? Do you have a dyno chart and run files by chance? What air/fuel ratio did you aim for across the board? Seeing this gets me excited to finish my build and get her back in the car. Looks like alot of fun.

Sick stuff. Those itb's will love some more aggressive cams.

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Thanks for the reply! Do you happen to know the answers to my other two questions as well?

"Which model Dynojet did you dyno on? What air/fuel ratio did you aim for across the board?"

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Now that you have tossed down 3G's on ITB's.. Get some bigger cams, and build a 2.5" equal length y-pipe, with 3" merge. JWT's C8 or even C9's would make a lot more power. C8's would probably be the best compromise between low end loss and midrange/top end gains.

I'd be lieing if I said that I wasn't a little jelous.. ;) Nice build, and impressive numbers for C2's.

Travis

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What fuel are you using, 93?

A 3" exhaust with a magnaflow muffler will make more power. I guarantee that 100%.

N/A is the WAY! lol
I want to build up an N/A VQ bad!

Kev,

Are you gonna put this on the road course? Shot me a PM or txt if you are looking for custom built coilovers and I'll hook you up. BC Racing is the main sponsor for our SER.

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Looks cool.. :)

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your going to make some more , just gotta get back for some tunning , just dont overdue it since everytime you dyno you add so much stress to the motor.

get the hood done and some more seat time like we talked about for your goals.

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That looks cool.. Gotta love waterjet.