Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)
-   -   Can you get to 400 without turbo or super-charger (http://www.the370z.com/engine-drivetrain/2186-can-you-get-400-without-turbo-super-charger.html)

koffeegy 08-18-2011 08:15 AM
can someone please explain what is this NA and FI that everyone is talking about?

Thanks in advance,

-Koffeegy

wstar 08-18-2011 08:22 AM
FI means Forced Induction, which means adding a Supercharger or Turbocharger setup to compress the intake air. Generally a pretty expensive mod.

NA means Naturally Aspirated, which is the opposite. The engine is just drawing intake air with its own suction, like our stock 370Zs do.

koffeegy 08-18-2011 10:40 AM
Quote:
Originally Posted by wstar (Post 1267713)
FI means Forced Induction, which means adding a Supercharger or Turbocharger setup to compress the intake air. Generally a pretty expensive mod.

NA means Naturally Aspirated, which is the opposite. The engine is just drawing intake air with its own suction, like our stock 370Zs do.


Thanks WSTAR

-Koffeegy

dirTy_shoeZ 08-18-2011 01:56 PM
i honestly think with a little more compression full bolt-ons and i mean FULL, and a tune you can get really close :). this is the route ive been going right now, but i will be going e85 aswell.

daisuke149 08-18-2011 02:12 PM
uhmm nitrous!

wstar 08-18-2011 02:34 PM
That's cheating :)

Seriously though, it could be done with an aggressive tune (including VVEL...), and that re-worked bottom end GTM was talking about.

Jordo! 08-18-2011 06:02 PM
Not to the wheels.

Maybe 330 - 340 whp (on a dynojet) with EVERYTHING (including pulleys and LTH) with VVEL tuning.

On that note, by my reckoning, 332ish on a dynojet is around 400 crank.

KingZee 08-18-2011 06:12 PM
Quote:
Originally Posted by Jordo! (Post 1269042)
Not to the wheels.

Maybe 330 - 340 whp (on a dynojet) with EVERYTHING (including pulleys and LTH) with VVEL tuning.

On that note, by my reckoning, 332ish on a dynojet is around 400 crank.
Isn't Trip's at around that hp at the wheels? I don't think he has MAJOR work done to the engine.

travisjb 08-18-2011 08:45 PM
any idea what the A.M. performance grand-am car is running? different upper block of course but NA

Jordo! 08-18-2011 09:37 PM
Quote:
Originally Posted by KingZee (Post 1269057)
Isn't Trip's at around that hp at the wheels? I don't think he has MAJOR work done to the engine.
N/A on a dynojet?

Maybe with a very generous correction factor and cold weather...

I honestly can't see how anyone could get better than 315 - 325 to the tire on a dynojet with every possible bolt on and a tune and STD correction, and a nice cool day...

But, I'm open to being proven wrong...

Methodical4u 08-18-2011 09:46 PM
no

edub370 08-18-2011 10:03 PM
no... just no

6mtg37s 08-28-2011 03:35 PM
Quote:
Originally Posted by dirTy_shoeZ (Post 1268506)
i honestly think with a little more compression full bolt-ons and i mean FULL, and a tune you can get really close :). this is the route ive been going right now, but i will be going e85 aswell.
Has anyone ever tuned it on e85? I want to try this too.

Zedx 08-28-2011 03:45 PM
Quote:
Originally Posted by Jordo! (Post 1269328)
N/A on a dynojet?

Maybe with a very generous correction factor and cold weather...

I honestly can't see how anyone could get better than 315 - 325 to the tire on a dynojet with every possible bolt on and a tune and STD correction, and a nice cool day...

But, I'm open to being proven wrong...
Working on proving you wrong. lol. at 310 on a mustang dyno. got some custom work on the way. hoping for some good results. will keep ya posted.

christian370z 08-28-2011 04:39 PM
Quote:
Originally Posted by KingZee (Post 1269057)
Isn't Trip's at around that hp at the wheels? I don't think he has MAJOR work done to the engine.
Yup, that dyno is very generous and is known to read a bit high. But still, 320-330rwhp in this car is already quite nice without upsetting the balance of the car.

Methodical4u 08-28-2011 06:24 PM
I really don't see what's wrong with the 315-330 that some people get tbh... the Z is also fairly easy to lose weight with... a low 12 second car with the available NA mods and some 4.08 gears .... what's wrong with that? Lose a little extra weight and maybe a very high 11 second car possibly? Who knows with the right driver.

Red__Zed 08-28-2011 06:30 PM
Quote:
Originally Posted by Methodical4u (Post 1285939)
I really don't see what's wrong with the 315-330 that some people get tbh... the Z is also fairly easy to lose weight with... a low 12 second car with the available NA mods and some 4.08 gears .... what's wrong with that? Lose a little extra weight and maybe a very high 11 second car possibly? Who knows with the right driver.
11's aren't happening NA unless you are doing things like removing the doors.

Jordo! 08-30-2011 10:23 PM
Quote:
Originally Posted by Zedx (Post 1285727)
Working on proving you wrong. lol. at 310 on a mustang dyno. got some custom work on the way. hoping for some good results. will keep ya posted.
Keep in mind that Mustang dynos can read either high or low relative to dynojets (i.e., may either break hearts or lift spirits depending on the settings...), so I wouldn't bet the farm on coming out higher on a dynojet...

Still, no harm in trying. If it can be done, please share the details on the work you've done to get there :tiphat:

On that note, I'd wait until summer time is over. The heat and humidity right now is absolutely crushing and you will dyno lower no matter what correction factor you use.

AlexRaymond19 08-31-2011 10:08 PM
Quote:
Originally Posted by Crash (Post 34050)
^^^ Interesting. I don't totally agree with your "turbo shenanigans" description, but I do know what you mean. I DO think it'd cost about the same to make the car 400whp N/A as it would to make it 500whp through FI. BUT, that's because 400 is a HIGH number for a small displacement motor.

Also, I just thought about it, why not bore and stroke? Make the car either a 3.8 or a 3.9 (or if you're crazy, a 4.0) and THEN go for more power. Obviously the 3.8 parts are already around.

I know what you mean about having the power when you want it, but a good turbo setup doesn't have to take forever to spool. In fact, with a lightweight flywheel the turbos spool a bit quicker, and to make the 400-500whp mark, you don't need big turbos, so they'd spool even faster.

Just a thought.

i was reading the owners manual the other day, i was pretty sure the displacement is near 3.8 already. Its like 3.783 or something. I could be wrong...

B.A.Q 08-31-2011 11:20 PM
Jnuts got 319 on a mustang dyno I think it should be around 340 in a dyno jet

ChipsWithDips 08-31-2011 11:29 PM
Quote:
Originally Posted by AlexRaymond19 (Post 1292086)
i was reading the owners manual the other day, i was pretty sure the displacement is near 3.8 already. Its like 3.783 or something. I could be wrong...
No it's actually slightly less than 3.7: 3,696 CC
Bore and stroke = 95.5 x 86.0

If it was 3.78 they would have rounded to 3.8.

efuseakay 09-01-2011 12:56 AM
QX56 engine. ;)

MightyBobo 09-01-2011 09:34 AM
Quote:
Originally Posted by 6mtg37s (Post 1285713)
Has anyone ever tuned it on e85? I want to try this too.
E85 see's tons of gains on forced induction cars. You barely see much at all in an N/A car.

MightyBobo 09-01-2011 09:35 AM
Quote:
Originally Posted by efuseakay (Post 1292500)
QX56 engine. ;)
If you wasted your money putting that thing in there over any LSX GM motor, you'd be silly.

wstar 09-01-2011 10:23 AM
Yeah honestly if I ever get to the point that the NA VQ37 isn't enough for me, I think I'd rather do an LSx conversion than FI or another Nissan engine. But I know the kind of hack that is, I'd only do it if/when my car became a full-time race car, not for a regular everyday car.

MightyBobo 09-01-2011 11:08 AM
Quote:
Originally Posted by wstar (Post 1292895)
Yeah honestly if I ever get to the point that the NA VQ37 isn't enough for me, I think I'd rather do an LSx conversion than FI or another Nissan engine. But I know the kind of hack that is, I'd only do it if/when my car became a full-time race car, not for a regular everyday car.
From what Ive seen on other successful installs into 350Z's, its not as much of a hack as you think. But, on the other hand, I havent exactly seen the full install so for all I know, some drastic changes are happening.

All I know is, down the road, I think I'd consider throwing an LSX into my car.

wstar 09-01-2011 12:30 PM
Well, mostly what I mean is it's not for a daily driver IMHO. Aside from all the mechanical hackery around fitting an appropriate drivetrain layout into the car, you'd have to toss Nissan's ECU for a GM one, so there goes pretty much all of the Nissan's electronics, which everything in the car is tightly integrated with. That means all the little creature comforts will need some custom wiring or hacking or whatever too just to get them working again: electronic door locks, power windows, interior and exterior lighting, etc... don't even ask me what happens with the gauge cluster and the info display, but I'd assume there's no sane way to get the stock ones working with an LSx ECU.

MightyBobo 09-01-2011 01:00 PM
Ahhh, I gotcha - yeah I know, thats one big factor that'd hold me back too. Even though I like racing, I DO like to keep my little creature comforts.

Z eliminator 09-01-2011 02:44 PM
Put the 4.08 gears in your diff, it will feel like 400 rwhp

Z

NYBladeZ 09-01-2011 03:59 PM
^ still waiting to see how it works out with you and the GTM Stage 2, I know I shouldn't fear the gear but increasing the ratio plus F.I might make the m6 undriveable, we'll see how it goes with your 7AT. That and waiting for the techies to figure out VVEL.

efuseakay 09-02-2011 09:34 AM
Quote:
Originally Posted by MightyBobo (Post 1292805)
If you wasted your money putting that thing in there over any LSX GM motor, you'd be silly.
Hey. I isn't say it'd be a smart move, but it'd probably work! ;)

NitroZ 03-14-2023 09:40 PM
Quote:
Originally Posted by Q_USAF (Post 33867)
Can you get the 370 up to 400 hp or as close as possible. Without being turboed or super-charged. Please list out the parts or modifications if possible.
I can help here. Install a 4.38 screw. CAI, headers and real exhaust system. No cats. Throttle boost. NOS. Maybe slightly bigger injectors if you want. You can run side by side anyone to 1/4 mile, 1/8 for sire. After 1/4, not gonna happen. Oh yea. MS100 fuel or better.

Elmo370z 03-15-2023 12:05 PM
It’s already been done

filip00 03-15-2023 02:18 PM
12 year old thread!


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