How much boost pressure can a built VQ37VHR withstand?

elperuano · 11-04-2014, 10:28 PM

For track you're absolutely right. But again that's just not what I'm into. For what i like a 450hp Z would get left in the dust, even with my tire setup. My quaiffe diff has complimented my power levels very well. Stable power to both wheels and i don't go sideways as easy anymore. 1st is useless 2nd is difficult but 3rd i can manage at WOT. I have ordered a solid bushing which should help with traction even more. With coils, quaiffe, bushing AND taller gears (3.55 was it?) I think these cars would hook a lot better.
Even with my mild setup, after quaiffe install was night and day difference.

1slow370 · 11-04-2014, 11:48 PM

I garauntee that if you got the same type of tires you have now in 19's on a factory width rim or maybe even lighter wheel and pulled some camber and raised the car to no more than an inch lower than stock you would have much better traction. But you would lose show appeal. The rear suspension has a camber curve the lower you go the faster it gains camber when the rear dips under acceleration, also a stretch on the tire tends to lower contact at the center which is the largest part of the contact patch. It also stresses the sidewalls making a highspeed blow out more likely. Do what you want it's up to you but just so you know it is much less safe and you are wasting a lot of your tires grip.

KratikosG37 · 11-05-2014, 09:45 AM

Quote:

Originally Posted by KratikosG37

Yep with a N/A build you're powerband is crazy good. Probably feels like 500whp with that tack slinging 8k RPM.

Yes and no. If you're full throttle you will blow all 3 gears with normal street tires.

I for one can get traction peddleing 1st and 2nd gear catching at the end around50ish MPH. Just my experince.

10psi 480whp/450wtq is the perfect street use power. Just enough to run decent 11's with good driver or enough to blow the doors off a C7 on a 40 to 120mph pull.

It's your build, your goals. VQ37HR don't need to be built.

Quote:

Originally Posted by BBRSpeedWorks

i guess your tires suck then cuz the ones that i have hold mine just fine and i run the piss out of it everyday....today on the way home i was running 13psi and did a pull against my wife in my talon and still didnt blow off the tires (after tires are warm) and went from 30 to 170 no spins...My uncle is one of the owners of jegs and when i was younger i raced legend cars..we only did 4 to 8 races a year.i always said it had to much power...he said no car has to much power it just means your driving skill has to improve....he would always say control the car dont react to the car...is what i'm trying to say is we r not in a honda you dont just slam it to the floor and hope it goes where yu want...

I'm running normal 245/19 street tries that are 10.5 inches wide. At 13 PSI you're applying 550 to 600whp.
A) You're either running slicks or very warm drag radials
B) Have VDC on
C) Roll throttling letting off before you spin

Either way @ 13 PSI 0 spin at 30 to 170 is great, but I was implying 0 to 50mph which is something total different. If you can do a 1.6 60ft 0 spinning then post a video and teach me the ways O great one. If you can't then your statement is total irravanlent no offensive.

Quote:

Originally Posted by 1slow370

Eh to each his own i would rather have a car that can easily hook up what it has than one i have to contantly hold back. A 450hp z runs mid to low 12's a 700hp z runs low 12's. Up to 125mph its the same ****. One is just a lot easier to drive.

Sent from my HTCONE using Tapatalk

If you're compaing drag its all about the 60ft. You can obtain faster times with a lower trap great 60ft v.s. bad 60 foot but high trap. Just means your HP is doing the work over the lack of driving.

Everyone here i'm sure is a great driver and im the last person to give advice. Just pointing out facts. At 0ft i'm spinning, not by much cause im peddleing or roll throttling but still spinning. Anyone that can 0 spin in our cars using normal street tires you're 60ft is poo or you're a awsome driver.

Personally, like a said before. 10 to 11ish PSI 480whp/450wtq is perfect for the street.

KratikosG37 · 11-05-2014, 09:52 AM

Fast Intentions TT 370Z *World Record 1/4 mile* - YouTube

Look at the way Terribleone broke 11.4 1/4 on stock block 550whp@12psi??(guessing)

He hooked just fine by rolling the throttle and feeling out the car, but I bet you he spun for the 1st 30ft(not by much but he did).

That's all i'm implying. Spinning is spinning no one can launch a car properly without a little bit or you're not at the car's protential. just my 2 cents.

FPenvy · 11-05-2014, 09:58 AM

Quote:

Originally Posted by KratikosG37

Fast Intentions TT 370Z *World Record 1/4 mile* - YouTube

Look at the way Terribleone broke 11.4 1/4 on stock block 550whp@12psi??(guessing)

He hooked just fine by rolling the throttle and feeling out the car, but I bet you he spun for the 1st 30ft(not by much but he did).

That's all i'm implying. Spinning is spinning no one can launch a car properly without a little bit or you're not at the car's protential. just my 2 cents.

if i remember correctly he wasn't the one driving his car for those runs.

i think it was jnaut driving?

but yes the launch and 60" time is everything in getting a good ET.

my little N/A Z only lost by .02 the one night to a viper based on him spinning tire on the launch when we all know that race should have been me seeing tailights fade in the distance lol

jwick · 11-05-2014, 10:07 AM

Quote:

Originally Posted by FPenvy

my little N/A Z only lost by .02 the one night to a viper based on him spinning tire on the launch when we all know that race should have been me seeing tailights fade in the distance lol

He must have been a really BAD driver

FPenvy · 11-05-2014, 10:22 AM

Quote:

Originally Posted by jwick

He must have been a really BAD driver

TerribleONE · 11-05-2014, 10:26 AM

Quote:

Originally Posted by KratikosG37

Fast Intentions TT 370Z *World Record 1/4 mile* - YouTube

Look at the way Terribleone broke 11.4 1/4 on stock block 550whp@12psi??(guessing)

He hooked just fine by rolling the throttle and feeling out the car, but I bet you he spun for the 1st 30ft(not by much but he did).

That's all i'm implying. Spinning is spinning no one can launch a car properly without a little bit or you're not at the car's protential. just my 2 cents.

This run was done on 10PSI. Right around 530-550WHP.

BBRSpeedWorks · 11-05-2014, 11:30 AM

In

Quote:

Originally Posted by KratikosG37

Either way @ 13 PSI 0 spin at 30 to 170 is great, but I was implying 0 to 50mph which is something total different. If you can do a 1.6 60ft 0 spinning then post a video and teach me the ways O great one. If you can't then your statement is total irravanlent no offensive.

I think everyone has agreed that first spins all day as far as my comment was to the fact someone said if I was full throttle I would spin 1st through 3rd and I said that's not true....I never said anything about 1st I said u can hook in second...so I guess your quote to me is irrelevant no offense.

BBRSpeedWorks · 11-05-2014, 11:33 AM

Quote:

Originally Posted by KratikosG37

Fast Intentions TT 370Z *World Record 1/4 mile* - YouTube

Look at the way Terribleone broke 11.4 1/4 on stock block 550whp@12psi??(guessing)

He hooked just fine by rolling the throttle and feeling out the car, but I bet you he spun for the 1st 30ft(not by much but he did).

That's all i'm implying. Spinning is spinning no one can launch a car properly without a little bit or you're not at the car's protential. just my 2 cents.

KratikosG37 · 11-05-2014, 12:12 PM

Quote:

Originally Posted by BBRSpeedWorks

i guess your tires suck then cuz the ones that i have hold mine just fine and i run the piss out of it everyday....today on the way home i was running 13psi and did a pull against my wife in my talon and still didnt blow off the tires (after tires are warm) and went from 30 to 170 no spins...

My uncle is one of the owners of jegs and when i was younger i raced legend cars..we only did 4 to 8 races a year.i always said it had to much power...he said no car has to much power it just means your driving skill has to improve....he would always say control the car dont react to the car...is what i'm trying to say is we r not in a honda you dont just slam it to the floor and hope it goes where yu want...

Quote:

Originally Posted by BBRSpeedWorks

In

I think everyone has agreed that first spins all day as far as my comment was to the fact someone said if I was full throttle I would spin 1st through 3rd and I said that's not true....I never said anything about 1st I said u can hook in second...so I guess your quote to me is irrelevant no offense.

OK, let me clearify. You can do a roll of 30mph in 2nd gear and reach 170mph with 0 spinning. Correct?

Cause all my comments we're about dead stop 60 ft.

From what you're telling me you can go full throttle at a 30mph roll with 550 to 600whp and have 0 issues with traction.

tbh at 8 psi G37 that wieghts 800 more pounds(me). I'm still blowing the wheels off in most of 2nd.

To answer my question with a question.

What tires are you running, rear end ratio, and suspension? No where i'm calling you a lier just like know how to improve my own traction.

BBRSpeedWorks · 11-05-2014, 12:38 PM

Quote:

Originally Posted by KratikosG37

OK, let me clearify. You can do a roll of 30mph in 2nd gear and reach 170mph with 0 spinning. Correct?

Cause all my comments we're about dead stop 60 ft.

From what you're telling me you can go full throttle at a 30mph roll with 550 to 600whp and have 0 issues with traction.

tbh at 8 psi G37 that wieghts 800 more pounds(me). I'm still blowing the wheels off in most of 2nd.

To answer my question with a question.

What tires are you running, rear end ratio, and suspension? No where i'm calling you a lier just like know how to improve my own traction.

1.yes
2.i was reply when someone said to me I would spin my tires 1st thru 3rd...I think this is a miss understanding between us..
3. I have 500 whp on base tune not sure 13psi.
4. Tire= whatever is stock on 2014 ray..I think it help there is around 3k miles
everything else was stock...I mite get in trouble but ill post a video of 2 pulls against a 500 whp cobalt. ..
now I have be coilovers with 12k front 10k rear and it's even better I think

BBRSpeedWorks · 11-05-2014, 12:43 PM

I took the video down....

1slow370 · 11-05-2014, 12:52 PM

Oh Man

BBRSpeedWorks · 11-05-2014, 01:04 PM

Quote:

Originally Posted by 1slow370

Oh Man

What's up. You it think it well get hit...I'll take it down if so...I'm just trying to show it gets traction. ...

11-04-2014, 11:48 PM	#107 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	I garauntee that if you got the same type of tires you have now in 19's on a factory width rim or maybe even lighter wheel and pulled some camber and raised the car to no more than an inch lower than stock you would have much better traction. But you would lose show appeal. The rear suspension has a camber curve the lower you go the faster it gains camber when the rear dips under acceleration, also a stretch on the tire tends to lower contact at the center which is the largest part of the contact patch. It also stresses the sidewalls making a highspeed blow out more likely. Do what you want it's up to you but just so you know it is much less safe and you are wasting a lot of your tires grip. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

11-05-2014, 09:52 AM	#109 (permalink)
KratikosG37 Enthusiast Member Join Date: Jun 2014 Location: New Orleans, LA Posts: 273 Drives: 09 TT Wrapped G37 Rep Power: 11	Fast Intentions TT 370Z World Record 1/4 mile - YouTube Look at the way Terribleone broke 11.4 1/4 on stock block 550whp@12psi??(guessing) He hooked just fine by rolling the throttle and feeling out the car, but I bet you he spun for the 1st 30ft(not by much but he did). That's all i'm implying. Spinning is spinning no one can launch a car properly without a little bit or you're not at the car's protential. just my 2 cents. TerribleONE likes this. __________________ KratikosG37 Build Log http://www.myg37.com/forums/build-th...ml#post3888739

11-05-2014, 12:43 PM	#118 (permalink)
BBRSpeedWorks Premium Member Join Date: Dec 2013 Location: Ft. Stwart Posts: 366 Drives: 370z,350z,300z,talon Rep Power: 12	I took the video down.... __________________ God'Z Gift. Last edited by BBRSpeedWorks; 11-05-2014 at 05:52 PM.

11-05-2014, 12:52 PM	#119 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	Oh Man __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

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11-04-2014, 10:28 PM	#106 (permalink)
elperuano A True Z Fanatic Join Date: Oct 2011 Location: Southwest FL Posts: 1,374 Drives: G37S Rep Power: 29	For track you're absolutely right. But again that's just not what I'm into. For what i like a 450hp Z would get left in the dust, even with my tire setup. My quaiffe diff has complimented my power levels very well. Stable power to both wheels and i don't go sideways as easy anymore. 1st is useless 2nd is difficult but 3rd i can manage at WOT. I have ordered a solid bushing which should help with traction even more. With coils, quaiffe, bushing AND taller gears (3.55 was it?) I think these cars would hook a lot better. Even with my mild setup, after quaiffe install was night and day difference.