who here has beat the piss out of their car at 7100rpms all the time with ECU flash
104 slips is nothing... I have more than that 
I know people who have thousands and never had engine issues. Dragstrip doesn't stress engine even if you shift at 6600rpm. Most of the abuse goes into the transmission, clutch and differentials.
With street tires, proper maintenance and no excessive abuse (insane burnouts, powershifting, whatnot) car engine should NEVER die. not after 104 slips, not after 1004, probably not even after 10004.
Laping and tracking puts a lot more stress on the engine. (I do that too
).
I know people who have thousands and never had engine issues. Dragstrip doesn't stress engine even if you shift at 6600rpm. Most of the abuse goes into the transmission, clutch and differentials.
With street tires, proper maintenance and no excessive abuse (insane burnouts, powershifting, whatnot) car engine should NEVER die. not after 104 slips, not after 1004, probably not even after 10004.
Laping and tracking puts a lot more stress on the engine. (I do that too
).
Originally Posted by zillinois
I'm pretty sure TS can set the the redline at anything you want.
Another Z driver was recently at the dealership that warrantied my motor and he said the block was still stitting there. Maybe I could get over there one day and take some pics of the damage and let you guys diagnose it.
I don't remember the oil ever being low in between oil changes. However, I did change it very regularly because of the harsh abuse I was giving it. I can recall one over-rev last year at Road America. Probably hit 7800-7900. The car did not seem the worse for wear in the months after.
The day the motor blew, I was driving down to the track and there were some essess on the way. I stepped on it to push through them a bit and something just didn't feel right. I couldn't put my finger on it, but something felt off. I even mentioned it to my wife. The symptoms were not bad enough to warrant much attention, but it was off. If I had to describe it I would say the the throttle response was dulled. I checked the car over a bit when I got to the track and nothing seemed wrong. By the 5th or 6th lap in on the first session, the rod gave way.
I'm not trying to scare anyone with my story. I think the VQ has proven itself as a pretty stout motor. But if you have a stack of these at your house, you might be in danger. Alberto how many runs you got in?? LOL!! Counted my slips, 104 quarter mile runs in the course of a year and a half.
Oh yeah, I took one more precaution too. I bought a trailer to tow the beast everywhere I go now. So if I flog it to death again, I can just tow it home.
Another Z driver was recently at the dealership that warrantied my motor and he said the block was still stitting there. Maybe I could get over there one day and take some pics of the damage and let you guys diagnose it.
I don't remember the oil ever being low in between oil changes. However, I did change it very regularly because of the harsh abuse I was giving it. I can recall one over-rev last year at Road America. Probably hit 7800-7900. The car did not seem the worse for wear in the months after.
The day the motor blew, I was driving down to the track and there were some essess on the way. I stepped on it to push through them a bit and something just didn't feel right. I couldn't put my finger on it, but something felt off. I even mentioned it to my wife. The symptoms were not bad enough to warrant much attention, but it was off. If I had to describe it I would say the the throttle response was dulled. I checked the car over a bit when I got to the track and nothing seemed wrong. By the 5th or 6th lap in on the first session, the rod gave way.
I'm not trying to scare anyone with my story. I think the VQ has proven itself as a pretty stout motor. But if you have a stack of these at your house, you might be in danger. Alberto how many runs you got in??
LOL!! Counted my slips, 104 quarter mile runs in the course of a year and a half. Oh yeah, I took one more precaution too. I bought a trailer to tow the beast everywhere I go now. So if I flog it to death again, I can just tow it home.
Last edited by Nano; Jul 22, 2005 at 10:55 AM.
Originally Posted by Z1 Performance
my car sees 7k every single day....not a single problem to date. I was among the first 04 to have an Altered flash (they use the techtom software). Car makes 269 at the wheels in its present state, soon to be a bit over 300 whp
the flash for me was an awesome mod, but like anything software related, its all in the person punching the keys
the flash for me was an awesome mod, but like anything software related, its all in the person punching the keys
my rev limiter is actually raised to 7500rpms.......
7lb pulley, bounced off it numerous time,
no valve springs, no cams, no internals, and motor is still running....
nothing has gone wrong YET.... :P
someones gotta test it out
Ben Y
7lb pulley, bounced off it numerous time,
no valve springs, no cams, no internals, and motor is still running....
nothing has gone wrong YET.... :P
someones gotta test it out
Ben Y
Originally Posted by 350Zenophile
I agree with your torque vs. hp comment. The graph I was looking for illustrates gear multiplied torque delivered to the wheels. I did find the original image link, but it is broken now. Anyone know who this is?
http://www.marksink.com/350Z/WHEELPOW.jpg
http://www.marksink.com/350Z/WHEELPOW.jpg
Registered User
Joined: Sep 2004
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From: Birmingham, AL
Originally Posted by Z1 Performance
agreed as well - and fwiw my hp is consistent to redline, but torque is what falls off
HP is merely a number derived from torque.
Registered User
Joined: Sep 2004
Posts: 64
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From: Birmingham, AL
Originally Posted by Alberto
And your hp doesnt keep going as long as you rev it with a turbo, you dont know what your talking about. Go look at a 1.8T GTI or WRX/STI dyno chart power falls off up top, just because a car has a turbo doesnt mean it will make power till redline.
Registered User
Joined: Sep 2004
Posts: 64
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From: Birmingham, AL
350Zenophile - this chart is definately informative and very interesting.
Practical.....no.
Let's check it out. Let's say I'm cruising down the highway at 80mph in 6th gear. By the chart you provided, I'm making about 500 lb of force. I look out the window to find a brand new EVO VIII cruising right beside me. I decide that I want to be an ***. In order to rocket my car as fast as possible, by the chart, I need to downshift three gears !
Yikes.
Practical.....no.
Let's check it out. Let's say I'm cruising down the highway at 80mph in 6th gear. By the chart you provided, I'm making about 500 lb of force. I look out the window to find a brand new EVO VIII cruising right beside me. I decide that I want to be an ***. In order to rocket my car as fast as possible, by the chart, I need to downshift three gears !
Yikes.
Originally Posted by 1991TT
A good turbo/engine match (which doesn't happen often from the factory) WILL pull hard all the way to your redline.
Originally Posted by 1991TT
Horsepower doesn't magically keep going so long as you press the gas...unless you have a turbo.
Originally Posted by 1991TT
Torque is what moves the car, not HP.
HP is merely a number derived from torque.
HP is merely a number derived from torque.
WTF??? HP is not "merely" a number derived from a torque.
torque is actually MEANINGLESS. Torque is just a force on a distance. It is meaningless unless you bring in TIME... which brings us to power, as it is work over time. Or the rate at which work is done.
Wheel power is what moves the car
http://auto.howstuffworks.com/question622.htm
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Joined: Jun 2003
Posts: 261
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From: Bay Area
Originally Posted by Nano
WTF??? HP is not "merely" a number derived from a torque.
torque is actually MEANINGLESS. Torque is just a force on a distance. It is meaningless unless you bring in TIME... which brings us to power, as it is work over time. Or the rate at which work is done.
Wheel power is what moves the car
http://auto.howstuffworks.com/question622.htm
torque is actually MEANINGLESS. Torque is just a force on a distance. It is meaningless unless you bring in TIME... which brings us to power, as it is work over time. Or the rate at which work is done.
Wheel power is what moves the car
http://auto.howstuffworks.com/question622.htm
Nano,
HP is just a number derived from torque. When a car goes to a dyno and the rollers are spun, the only thing that is measured is torque. Torque is (inertia X acceleration), and this is the only actual type of "force" an engine produces. HP is calculated by multiplying torque(insert number) and rpm(insert number), and then dividing that number by 5252. A high HP number only means that your car produces a significant amount of torque at the higher rpms!
on a dyno, not only torque is measured my friend, if only torque was measured, it would be meaningless. TIME is measured as well. 5252 is not a random number
a High HP numbers means your car produce more torque in given time
a High HP numbers means your car produce more torque in given time
Registered User
Joined: Jun 2003
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From: Bay Area
Originally Posted by Nano
on a dyno, not only torque is measured my friend, if only torque was measured, it would be meaningless. TIME is measured as well. 5252 is not a random number
a High HP numbers means your car produce more torque in given time
a High HP numbers means your car produce more torque in given time
Originally Posted by 1991TT
350Zenophile - this chart is definately informative and very interesting.
Practical.....no.
Let's check it out. Let's say I'm cruising down the highway at 80mph in 6th gear. By the chart you provided, I'm making about 500 lb of force. I look out the window to find a brand new EVO VIII cruising right beside me. I decide that I want to be an ***. In order to rocket my car as fast as possible, by the chart, I need to downshift three gears !
Yikes.
Practical.....no.
Let's check it out. Let's say I'm cruising down the highway at 80mph in 6th gear. By the chart you provided, I'm making about 500 lb of force. I look out the window to find a brand new EVO VIII cruising right beside me. I decide that I want to be an ***. In order to rocket my car as fast as possible, by the chart, I need to downshift three gears !
Yikes.
If you want to get from 65+mph to 90mph as fast as possible, 3rd gear would be your choice.b.t.w., my chart was posted to illustrate the inaccurate conclusion of your original statement:
Originally Posted by 1991TT
Even with an ECU, you're probably making your peak HP right around 6000. No need at ALL to keep going. In fact, reving beyond your peak slows you down.
Originally Posted by 287HP
Well then dyno's must be meaningless, because the only thing a dyno can physically measure is torque. Horsepower is calculated after the fact!!!!! HP is not a physical attribute (this concept is hard to grasp for some). A high HP car means that a car can hold a decent amount of torque in the upper rpms, that is all. HP is HIGH RPM TORQUE-nothing more.
As I said, Higher horsepower means more torque over time...
A dyno doesn't measure only torque, it measures RPMs as well. It measures torque produced per time(or revolutions per minute, it's the same). In a GIVEN TIME, you realize that one engine revolution at X torque is not the same as 2 revolutions at same X torque?
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From: Birmingham, AL
Originally Posted by sentry65
yeah I didn't understand what the big deal was? 3 gears? What's so wrong with going from 6th to 3rd gear as long as you rev match?
You're reading the right magazine, but still not getting it.
Registered User
Joined: Sep 2004
Posts: 64
Likes: 0
From: Birmingham, AL
Originally Posted by Nano
As I said, Higher horsepower means more torque over time...
Wheel power is what moves the car
Wheel power is what moves the car
You're both right, Nano.
Wheel power IS what moves the car. Wheel power is torque, not HP. And yes, like you said, high horsepower car make torque more quickly than a low horsepower car.
Let's word it like this: Horsepower is just a number derived form a torque value monitored over time.
I believe it was Steeve Saleen who said, "Torque wins races. Horsepower sells cars."
Thread Starter
Joined: Mar 2004
Posts: 9,722
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From: phoenix, AZ
Originally Posted by 1991TT
You'd be rev-matching almost 3500 RPMs. I'm sure you guys will say otherwise, but that's a long time to rev.
You're reading the right magazine, but still not getting it.
You're reading the right magazine, but still not getting it.
not if you have a tilton clutch - or any lightweight clutch really. It'll rev right up there in a fraction of a second
and wouldn't it be more like 3000 rpms?
if you have a raised rev limiter, then you still have plenty of headroom to accellerate
Originally Posted by sentry65
not if you have a tilton clutch - or any lightweight clutch really. It'll rev right up there in a fraction of a second
and wouldn't it be more like 3000 rpms?
if you have a raised rev limiter, then you still have plenty of headroom to accellerate
and wouldn't it be more like 3000 rpms?
if you have a raised rev limiter, then you still have plenty of headroom to accellerate
http://gscdownloads.com/leh/sebring/GT3RSatSebring.wmv
Puts you back in perspective, lol a 3000rpms rev-match is nothing
Last edited by Nano; Jul 23, 2005 at 09:27 PM.
OMG I WANNA LEARN HOW TO DRIVE LIKE THAT... anyone care to teach me some skills..lol the z was my first manual car. and I'm pretty good at it, or atleast i thought i was.. damn he's good.. anyone care to show me how its done...