My #8 goes bye bye and who know's why - OP runs and hides

[Bmr4life]

LOL, this thread is sooooooooooo OT. Good thing since the original point of the thread was bullshit anyway.

 

[UltraKla$$ic]

LOL, this thread is sooooooooooo OT. Good thing since the original point of the thread was bullshit anyway.

lol!!!!!!!!!!!!! true.

 

[302]

As a full blooded descendant from Europe (France, Spain, Italy), yes I am white American, I resent that shit. I kicked those stereotypes (Asian and Indian), in almost every engineering class I took...including graduate school. Graduate school was the worse shit. They tried bumming answers from us, to make themselves look good.

Actually in my school the indians garbage students also. Dumb as a box of rocks... I guess they need to stick with med-school....

 

[fdjizm]

LOL, this thread is sooooooooooo OT. Good thing since the original point of the thread was bullshit anyway.

 

[pacettr]

I'm holding back what I do for a living and throwing out the advanced degree card (hint, all of my degrees are in engineering and fields that require advanced mathematics). I've learned how to spot when a measuring tool fails by trend analysis.

I'd rather keep it civil but I'm at the point I don't care what pace says about the dyno. Some people just don't understand.

O RLY?

I'm a Chemical Engineer (B.S.) and Computer Science (M.S. and Ph.D).

I'm doomed to geekdom

I'm willing to bet you didn't take any classes on how dynos work based on all the misinformation and double-talk you continue to spew forth.

No you haven't. You're the only one here with your opinion. If a tach read isn't placed on the car properly, or comes loose that alone can cause the torque figure to miscalculate throwing off the entire run.

All you're doing is quoting equations you don't even understand from wikipedia lol.

I understand them quite well

When others have broken down this dyno run apart and have all chalked it up to an error on the dyno. Get over it, it happens. Even if the dyno showed him making 650hp/655tq, the ratio of the peaks is incorrect.

Ratio of the peaks? As in ratio of peak hp/peak tq?

You're not using any kind of fact, all you are doing is taking a bad/unvalidated number and using it as your constant. I'm glad you're not in any type of engineering field.

I am using the only printed numbers on the graph sheet and using the formula to figure the respective hp/tq. You are guessing at a point on a graph with no hard lines.

Me = fact
You = guess

Seer are you saying that the math always works out like that for torque and hp? Seems like the math rarely works out like that with the dyno graphs I've seen.

100% of the time. IIRC dynos measure tq and the use the formula to extrapolate hp (or vice-versa).

hp = (tq*rpm)/5252


note that at 5252 rpm hp and tq will ALWAYS be =

ALWAYS... it's physics

I just used the information given from the dyno chart and plugged it into the formula. I assumed the HP@RPM=TQ@RPM all values being equal and given, and we all seem to agree the TQ numbers are off. But hey, we all passed algebra in high school...

it's not far off.. but that dyno is wonkey lol.

I had a run when I plugged in my ghost cam tune, that it shook the tach read off mid run, so for some odd reason it showed me making 415rwhp at 16,000 rpm. So, it couldn't give me an accurate TQ calc.

It doesn't show hp without tq. Dynos measure tq.

 

[stkjock]

new thread title:

My #8 goes bye bye and who know's why - OP runs and hides

 

[pacettr]

new thread title:

My #8 goes bye bye and who know's why - OP runs and hides

 

[Seer]

O RLY?



I'm willing to bet you didn't take any classes on how dynos work based on all the misinformation and double-talk you continue to spew forth.



I am using the only printed numbers on the graph sheet and using the formula to figure the respective hp/tq. You are guessing at a point on a graph with no hard lines.

Me = fact
You = guess













It doesn't show hp without tq. Dynos measure tq.

Really? This is because of an improper tach read. I just see HP, and no torque. Want to know why? The tach read came loose, and did not capture rpm properly to display the torque. So you're wrong again.

As far as programming dynos? No. My Masters and Doctoral studies were in Computer Science, specializing in Machine Learning and Artificial Intelligence. I would say, what that entails is a lot more complex than an elementary physics calculation a dyno does. Maybe I went to a shitty school... oh wait, no I didn't... rated #1 in the country. http://grad-schools.usnews.rankings...top-science-schools/computer-science-rankings

Shouldn't you be selling people cars and creating loans that turn a $15,000 car into a $700/mo for 84 months type of deal?

 

[jawsgt]

hey ive had my car dynoed there! only difference is you are making almost exactly a 100 more horsepower than me.

 

[pacettr]

Really? This is because of an improper tach read. I just see HP, and no torque. Want to know why? The tach read came loose, and did not capture rpm properly to display the torque. So you're wrong again.

As far as programming dynos? No. My Doctoral studies were in Computer Science, specializing in Machine Learning and Artificial Intelligence. I would say, what that entails is a lot more complex than an elementary physics calculation a dyno does.

So educate me here; how did the dyno figure the hp if it had no rpm data? Do you know how dynos calculate hp? You can also choose to show only hp or tq, and plot it along the x-axis using mph or rpm. How do you think that dyno plotted the mph?

Shouldn't you be selling people cars and creating loans that turn a $15,000 car into a $700/mo for 84 months type of deal?

Actually as the GM I just make sure I have people doing that

 

[Seer]

Actually as the GM I just make sure I have people doing that

It did register torque, but it showed I spun the engine to 16,000 rpm on a different graph, which made it unusable. Hence that entire graph was flawed.

You keep thinking dynos are perfect, if they receive an improper input they can in fact give you a flawed number.

 

[SilentScope]

cliff notes anyone?

 

[pacettr]

It did register torque, but it showed I spun the engine to 16,000 rpm on a different graph, which made it unusable. Hence that entire graph was flawed.

You keep thinking dynos are perfect, if they receive an improper input they can in fact give you a flawed number.

I agree that the numbers can be flawed, HOWEVER, respective hp/tq are not. With your fancy computer degree you should know that computers use formulas to calculate data.

 

[Seer]

I agree that the numbers can be flawed, HOWEVER, respective hp/tq are not.

Thats where we disagree, they are not respective in this case.

 

[302]

cliff notes anyone?

OP's number 8 cylinder goes to cylinder heaven. No one knows why, but he had 3 different tunes in the car. He doesnt know which one does it so he just assumes lund did it. Well after about 40 pages of finger pointing s197GT posts his dyno graph. All s197forum engineers start to examine and do dynograph analysis. pacettr says the s197 engineers are wrong. More finger pointing ensues and s197 engineers are now on a vendetta against pacettr.

 

[pacettr]

It did register torque, but it showed I spun the engine to 16,000 rpm on a different graph, which made it unusable. Hence that entire graph was flawed.

You keep thinking dynos are perfect, if they receive an improper input they can in fact give you a flawed number.

So educate me here; how did the dyno figure the hp if it had no rpm data? Do you know how dynos calculate hp? You can also choose to show only hp or tq, and plot it along the x-axis using mph or rpm. How do you think that dyno plotted the mph? If it showed 16000 rpm wouldn't the mph be much higher?

 

[pacettr]

Thats where we disagree, they are not respective in this case.

Proof?

 

[Seer]

So educate me here; how did the dyno figure the hp if it had no rpm data? Do you know how dynos calculate hp? You can also choose to show only hp or tq, and plot it along the x-axis using mph or rpm. How do you think that dyno plotted the mph? If it showed 16000 rpm wouldn't the mph be much higher?

It created a calculation off of what rpm data it did capture, which cannot be considered valid since the entire rpm band was not complete.

I was merely showing you that you can in fact calculate HP without torque.

That dyno run was of my car, I was there when the graph came out. The 16,000 rpm reading was also considered an error since a number of malfunctions happend at the same time.

1. The tach read came loose, and re-attached mid run.
2. The dyno brake sensor kept coming on.

What I am saying is, if I took the graph that showed RPM you would see breaks in the torque lines so what the dyno did was extrapolate the data to fill in the holes. Not accurate by any means. Again, the graph is used to show an example of what a botched dyno run can look like.

Proof?

Burden of proof is on your side, I've already submitted a few examples of what a power curve looks like on multiple 5.0 Mustangs, show me some dyno runs where the HP and TQ were within 1% of each other at their peaks? I've shown you a few dynos where this is not the case for the 5.0 Mustang. His peak to peak numbers are not accurate from a ratio perspective.

 

[Witt]

O RLY?



I'm willing to bet you didn't take any classes on how dynos work based on all the misinformation and double-talk you continue to spew forth.



I am using the only printed numbers on the graph sheet and using the formula to figure the respective hp/tq. You are guessing at a point on a graph with no hard lines.

Me = fact
You = guess













It doesn't show hp without tq. Dynos measure tq.

Wow, no.

Dynos measure horsepower. If they measured torque your rear gear ratio would quadruple your numbers not to mention the transmission's effect on torque at the wheels.

 

[SilentScope]

OP's number 8 cylinder goes to cylinder heaven. No one knows why, but he had 3 different tunes in the car. He doesnt know which one does it so he just assumes lund did it. Well after about 40 pages of finger pointing s197GT posts his dyno graph. All s197forum engineers start to examine and do dynograph analysis. pacettr says the s197 engineers are wrong. More finger pointing ensues and s197 engineers are now on a vendetta against pacettr.

thanks!