370ish whp, do you think it can be done?

370Zsteve · 03-15-2010, 10:55 AM

Quote:

Originally Posted by RCZ

It completely depends on the dyno, I could go on a dynapak right now and make 350rwhp easy. They read so high. Dynojets read a bit high too, I'm probably at like 330whp on a dynojet. The dyno I used (Mustangdyne) reads more accurately when you consider the whp/weight vs. performance figures (performance seems to match what you would expect 310whp/3300lbs to do). If I were to dyno on a dynodynamics I would probably put down 300 or less because those read low.

So you have to know which dyno you are talking about. This is my rule of thumb:

Dynapak: +15%
Dynojet: +10%
Mustang: 0 (base)
Land&Sea: 0
DynoDynamics: -5%

I'd pretty much agree with those numbers. factor in temp, humidity, air pressure and there is even more variance. Makes me feel good that my car in stock trim pulled 278.5 on a Dyno Dynamics, proper break-in ftw.

RCZ · 03-15-2010, 02:26 PM

Quote:

Originally Posted by 370Zsteve

I'd pretty much agree with those numbers. factor in temp, humidity, air pressure and there is even more variance. Makes me feel good that my car in stock trim pulled 278.5 on a Dyno Dynamics, proper break-in ftw.

278 on a dyno dynamics stock? Sure about that? Mine (and most others) pulled about 250 on a mustang. The DD should read even lower. 278whp stock is very dynojet.

NYBladeZ · 03-15-2010, 05:17 PM

Quote:

Originally Posted by RCZ

Don't ask me how I know, but my car is as fast if not a little quicker than an e92 M3.

I don't find that surprising, one of my first runs was with a black e92 m3 stick. It was a total driver's race and and I ended up holding on for a yard on both runs.

Everyone knows the magazine number but in the real word it's beatable.

kevin.z · 03-15-2010, 05:28 PM

yay, 370z>m3

NYBladeZ · 03-15-2010, 05:31 PM

lol I'm just saying it can be done and has been done. I think the m3 is great but its no longer the raw fast fun car it used to be. That's what happens when a car succeeds in the market, they try to make it enticing and pleasurable to the entire population rather than us fanatics.

dlmartin81 · 03-15-2010, 09:04 PM

Well, what about valvetrain work....like new cams, camshaft, cam gears? I know back in my Honda days, those mods would produce substantial gains at a reasonable price. BUT of course the bigger the engine, the more expensive.

What do these sort of mods produce on the 350 and at what cost?

KillerBee370 · 03-16-2010, 01:20 AM

Quote:

Originally Posted by kevin.z

rwhp because i think killerbee has all the bolt on's including jwt clutch and flywheel.

Correct! The only thing I don't have is the LTH but I believe those actually LOSE power according to some previous testing.

Quote:

Originally Posted by RCZ

It completely depends on the dyno, I could go on a dynapak right now and make 350rwhp easy...

I want to see it. True the dynapack reads higher because you're not rotating the unsprung weight of the rear wheels however I don't think you'll hit 350 easy. I put down 315 on a dyno dynamics which is yet another "heartbreak" dyno according to some.

The good think about the dynapack is that it gives you an accurate rwhp... as in, the power that is hitting the rear wheels. Not power to the street.

Quote:

Originally Posted by NYBladeZ

LTH's are probably good for another 4-7whp, but regardless those are still really nice numbers. I believe those are the highest documented N/A numbers.

Correct again.

RCZ · 03-16-2010, 09:18 AM

Quote:

Originally Posted by KillerBee370

I want to see it. True the dynapack reads higher because you're not rotating the unsprung weight of the rear wheels however I don't think you'll hit 350 easy. I put down 315 on a dyno dynamics which is yet another "heartbreak" dyno according to some.

The good think about the dynapack is that it gives you an accurate rwhp... as in, the power that is hitting the rear wheels. Not power to the street.

I'm not going to get into an argument here but I've seen dynapacks read as much whp as the car was supposed to have bhp, they are all over the place and usually read too high to give any indication of real power. I'm not sure why you think that's a good thing, I guess if you wanted to know an inflated number of what the car is putting down without wheels and tires on, only drivetrain loss, then that would be good.They are just notorious ego boosters in every car community I've ever been on.

315 on a dyno dynamics is great though, that you can definitely be proud of and is a much better approximation of the power your car is making.

Moving on.

KillerBee370 · 03-16-2010, 12:27 PM

Quote:

Originally Posted by RCZ

I'm not going to get into an argument here but I've seen dynapacks read as much whp as the car was supposed to have bhp, they are all over the place and usually read too high to give any indication of real power. I'm not sure why you think that's a good thing, I guess if you wanted to know an inflated number of what the car is putting down without wheels and tires on, only drivetrain loss, then that would be good.They are just notorious ego boosters in every car community I've ever been on.

315 on a dyno dynamics is great though, that you can definitely be proud of and is a much better approximation of the power your car is making.

Moving on.

Agreed

JB-370z · 03-16-2010, 12:57 PM

You might be able to get close with.
Pistons, ti springs, rods, ti p-pins, CB, HFC's, Header, cold-air, very agressive engine time-ing and tune, with a 9k red line.
You could get there for sure with a stroker kit.
VQ engines react well to boost so there is not reason not to go that route.
But still not as cool as a sc or tt with less hp for around same price as sc.

theDreamer · 03-16-2010, 12:58 PM

Not sure on NA will the VQ will do much past 7500, I think those who have gone up to 8000 have not seem much more power after the 7500ish point.

RCZ · 03-16-2010, 03:12 PM

I think a high power NA motor is much more impressive than a forced induction one.

My car made power all the way through to 8150.

theDreamer · 03-16-2010, 03:15 PM

Quote:

Originally Posted by RCZ

I think a high power NA motor is much more impressive than a forced induction one.

My car made power all the way through to 8150.

How did the motor feel going above 8k? I know in past motors it was a great idea to bump the redline but today it seems from factory they put that redline pretty close to the top already.

KillerBee370 · 03-16-2010, 06:03 PM

Quote:

Originally Posted by theDreamer

How did the motor feel going above 8k? I know in past motors it was a great idea to bump the redline but today it seems from factory they put that redline pretty close to the top already.

That's gotta be with a tune. I don't think the VQ will hit above 7600 without one. I too make power all the way to 8000.

JB-370z · 03-16-2010, 06:17 PM

Quote:

Originally Posted by RCZ

I think a high power NA motor is much more impressive than a forced induction one.

My car made power all the way through to 8150.

But it cost much more money to go that route and see insane hp levels.

View Poll Results: Do you think 375whp can be done N/A
Yes, bolt ons and a good tune will get you there	14	27.45%
No, its a pipe dream without F.I.	37	72.55%
Voters: 51. You may not vote on this poll

03-15-2010, 05:31 PM	#35 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 20	lol I'm just saying it can be done and has been done. I think the m3 is great but its no longer the raw fast fun car it used to be. That's what happens when a car succeeds in the market, they try to make it enticing and pleasurable to the entire population rather than us fanatics. __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

03-16-2010, 12:57 PM	#40 (permalink)
JB-370z A True Z Fanatic Join Date: Apr 2009 Location: Houston, Tx Posts: 1,859 Drives: Stage 2 Twin Turbos Rep Power: 19	You might be able to get close with. Pistons, ti springs, rods, ti p-pins, CB, HFC's, Header, cold-air, very agressive engine time-ing and tune, with a 9k red line. You could get there for sure with a stroker kit. VQ engines react well to boost so there is not reason not to go that route. But still not as cool as a sc or tt with less hp for around same price as sc. __________________ ll Baker Tuning ll GTM ll Powerhouse Amuse ll HKS ll Up-Rev ll iForged ll AP Racing ll Pioneer ll SPL ll Bride ll Top Secret ll OS Giken ll GTM Stage 2 Twin Turboed 370z (First in Texas, Thanks To Baker Tuning)

03-16-2010, 12:58 PM	#41 (permalink)
theDreamer A True Z Fanatic Join Date: Feb 2009 Location: Texas Posts: 30,879 Drives: 370z Rep Power: 4211	Not sure on NA will the VQ will do much past 7500, I think those who have gone up to 8000 have not seem much more power after the 7500ish point. __________________ theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN theDreamer's Silvia // URAS // GREDDY Houston Zs // Facebook // Twitter // Instagram

03-15-2010, 05:28 PM	#34 (permalink)
kevin.z Enthusiast Member Join Date: Oct 2009 Location: vancouver(shipping:WA Posts: 359 Drives: 09 370z M6 PGtouring Rep Power: 16	yay, 370z>m3

03-15-2010, 09:04 PM	#36 (permalink)
dlmartin81 Track Member Join Date: Dec 2008 Location: Chalfont, PA Age: 43 Posts: 923 Drives: 09 370Z Rep Power: 608	Well, what about valvetrain work....like new cams, camshaft, cam gears? I know back in my Honda days, those mods would produce substantial gains at a reasonable price. BUT of course the bigger the engine, the more expensive. What do these sort of mods produce on the 350 and at what cost?

03-16-2010, 03:12 PM	#42 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	I think a high power NA motor is much more impressive than a forced induction one. My car made power all the way through to 8150.