Possible natural aspiration performance from the VQ35?

[rydwhite]

What can be achieved with a VQ35 performance-wise while staying naturally aspirated?

What are the most effective upgrades in relation to cost?

What are the most effective upgrades where cost is not an issue?

How much power can we get from the VQ35 without going FI or nitrous and keeping stock internals?

What about upgrading internals? What is most effective?

Any takers to answering some of these questions?

Thanks

[hatebobbarker]

the problem with NA is after 320whp or so your gonna get closer and closer to needing higher octane than pumps are gonna give you

[PalmerWMD]

the stock cats are very restrictive..

If I would go NA on this platform:

-SPL Intake-Headers (DC ceramicas low as $4xx)-Highflowcats-Lighter flywheel-Catback exhaust-Re-tune with a reflash from technosquare or AAM ( be sure to send in a dyno sheet for the better flash)

Also lighter wheels, like the 5zigen FNO1rC in 17x9 with the 5 bolt pattern perfect fit for out cars, light strong and makes cheaper tires accessible,m I would have gotten those if I hadndt gotten these repainted wheels.

Above mods easily will, get within a couple dozen hp, what a mild SC set-up like (HKS) will give you.

Some folks have gotten some fantastic numbers with a set-up like this like the SPL Z ( same mods apply to G35C)

Fred..

[NISTECH]

Fred , Anyone done a HP comaprison with the factory dual mass flywheel versus with a one piece solid flywheel? Aside from the fact it is lighter I would imagine the transfer of engine input into the trans would be better since the flywheels clutch surface does not move. That alone should greatly increase any HP ratings.Do you know if there are any numbers posted. I think that dual mass flywheel is a joke especially at around $1000 for it.

[PalmerWMD]

Scott,

I am not sure how much hp the lighter fllywheels really adds on a dyno.I its been shown, the increased eagerness of the car to rev, will result in better acceleration, as if it had added hp.

Fred..

[InjectedPerformance]

RPS turbo clutch claims 20whp

[hatebobbarker]

update, im staying NA so eventually, well see how much power i can make on 91

[s13sr20chris]

let me say this.cams make a definite difference but they are a pain in the bum to install.350evo gears make a nice difference too but they are noisy.tilton mini clutch feels great as long as you dont mind stalling out like 89 times a day.when i think about the z car i just think racecar. it has enough power stock to be awesome at a road racing event.

scott and fredi have driven a z with a nismo clutch/flywheel setup and another with the tilton mini clutch. the nismo is streetable and mild. the tilton is not streetable. the tilto is such a shock to the tires that oversteer is hard to avoid at any time even on stock suspension.

[NISTECH]

Yea I had a customer have me install the nismo set up in his Z. I definitly liked the feel of it. Pedal release felt more responsive. more performance oriented, I couldnt get on it as it was new but just the feel of it. Quite an improvement over the knockwheel.

[audtatious]

While not a Z, another Maxi owner (2k2 6sp VQ35) was able to pull high 12's with bolt ons. Headers, ECU, hi-flow exhaust, intake, modified manifold. Not too shabby for a 14-sec 4-door.

[hatebobbarker]

switch to the jun flywheel its not too light for street use and can be resurfaced

[Exar-Kun]

I had a JUN flywheel on my S13...that thing was awesome...

it's lighter than NISMO, can be resurfaced and is much stronger than stock (not many alluminum flywheels can claim that...)..

its that or I got back to my "full NISMO" setup i wanted....well..NISMO, ARC and PE. (Apexi doesnt' make **** for our cars....)

-Chet

[NISTECH]

jotting down on 240 list of things to get...."jun flywheel"

[Importroller]

i believe upgrading the cam gears and cam shafts are the best bolt on mods,

[projectz]

i just got my z not all that long ago i have put only a coulpe of things on it,and the vq35 definitely responds well to breathing mods and lighter moving parts.but this is something i have learned from being a long time n/a honda guy.although the hp numbers are different the basic principals of engine buyilding are the same.when building an n/a motor you have really got to have everything working as one complete system,for example if you want high horse power start at the intake and end at the exhaust butt you have to change everything in the middle as well,such as cams manifolds,headwork,fuel system,built and balanced bottom end with higher compression.dont forgget about the rest of the drivetrain like the clutch flywheel,lsd,wheels,tires.all the time and money you just spent could have gone towards boost and you would be much more satisfied.so wait,save,and boost. that's my 2 cents

[Exar-Kun]

Fred , Anyone done a HP comaprison with the factory dual mass flywheel versus with a one piece solid flywheel? Aside from the fact it is lighter I would imagine the transfer of engine input into the trans would be better since the flywheels clutch surface does not move. That alone should greatly increase any HP ratings.Do you know if there are any numbers posted. I think that dual mass flywheel is a joke especially at around $1000 for it.

Found a dyno of a 14lb flywheel versus the stock 28lber making 7.5hp extra on the dyno....

Also, JUN makes both a stroker kit(!!!!!) and flywheel for the VQ now! MY credit card is begining to burn with delight...

-Chet

[Axelpkt]

Do you happen to know how much that stroker kit costs and how much more horsepower you gain from it??

[Exar-Kun]

I think the JUN stroker kit, with the low-compression pistosn(for better turbo powerband) is around 3800-4200, IIRC....

don't quote me though, it's just conjecture.

-Chet