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Old 10-14-2018, 12:24 PM   #41
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Quote:
Originally Posted by Crawler View Post
My Snap On guy said my engines are RPM limited because I use a Torque wrench to assemble them and need to upgrade to one of those fancy Horsepower wrenches.
 
Old 10-14-2018, 02:11 PM   #42
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Listening to the whole "torque vs hp" argument feels like arguing between the difference between democrats and liberals sometimes....
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Old 10-14-2018, 02:20 PM   #43
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Allan I think you tune or play with tuning on class 8 trucks.. when was the last time you adjusted horsepower curve in a file? Also your truck probably has 480hp at lets say 1900 +- rpm and peak torque at about 1500rpm when you hit a big hill or a long steep grade notice where the tach settles in ? I bet around 1500 where peak torque is... you may get a run at the hill with the horsepower but when it settles in its the torque doing the work.
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Old 10-14-2018, 09:50 PM   #44
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Originally Posted by T-MAN View Post
Allan I think you tune or play with tuning on class 8 trucks.. when was the last time you adjusted horsepower curve in a file? Also your truck probably has 480hp at lets say 1900 +- rpm and peak torque at about 1500rpm when you hit a big hill or a long steep grade notice where the tach settles in ? I bet around 1500 where peak torque is... you may get a run at the hill with the horsepower but when it settles in its the torque doing the work.
Yes 1500 is where peak torque is. Yet if I can't pull a hill at say 60 mph at 1500, I split a gear to 1700 and suddenly I'm pulling it at 60 mph? Engine torque is lower, HP is higher, and I'm making more torque to the wheels.

Also the torque wrench analogy makes me . How much torque can you make on one personally? So what if you were in the engine bay of a car with your torque wrench, would the car go anywhere? It would barely move. You can make a decent amount of torque but it's at such a low RPM it is quite useless for doing any actual work. The human body can produce a lot of torque, but maybe 1/5 a HP.
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Old 10-15-2018, 09:23 AM   #45
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I guess you people don't ride bicycles in Texas, or have vehicles that kick down a gear when the pedal is mashed?

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Old 10-15-2018, 10:37 AM   #46
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I guess you people don't ride bicycles in Texas, or have vehicles that kick down a gear when the pedal is mashed?

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If something I drive needs to downshift at speed, it just needs more power. LMAO

But seriously, WTF happened to my thread about big single turbochargers?
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Old 10-15-2018, 12:33 PM   #47
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But seriously, WTF happened to my thread about big single turbochargers?

Umm..... CompD happened.
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Old 10-15-2018, 12:59 PM   #48
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Originally Posted by blackmega3500 View Post
Downshift does nothing to your horsepower directly.

A pedal bike is a bad example as it is a better compared to this.....


Infiniti VC-Turbo Engine - World’s First Variable Compression Ratio Engine - YouTube
I think Saab did it better. Seems like a more robust design.
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Old 10-15-2018, 02:28 PM   #49
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Downshift does nothing to your horsepower directly.

A pedal bike is a bad example as it is a better compared to this.....


Infiniti VC-Turbo Engine - World’s First Variable Compression Ratio Engine - YouTube
No.

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Old 10-15-2018, 02:38 PM   #50
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Originally Posted by allan5oh View Post
Yes 1500 is where peak torque is. Yet if I can't pull a hill at say 60 mph at 1500, I split a gear to 1700 and suddenly I'm pulling it at 60 mph? Engine torque is lower, HP is higher, and I'm making more torque to the wheels.

Also the torque wrench analogy makes me . How much torque can you make on one personally? So what if you were in the engine bay of a car with your torque wrench, would the car go anywhere? It would barely move. You can make a decent amount of torque but it's at such a low RPM it is quite useless for doing any actual work. The human body can produce a lot of torque, but maybe 1/5 a HP.
See this makes sense now, I had to gear down and use torque multiplication through my transmission for my horsepower to carry the hill due to the lack of torque in the higher rpm.... just like my horsepower converter in my automatic..... sorry speedshift for the derail...…..
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Old 10-15-2018, 07:58 PM   #51
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So. You claim to grasp biomechanics, but failed high-school physics.

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Old 10-15-2018, 11:53 PM   #52
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See this makes sense now, I had to gear down and use torque multiplication through my transmission for my horsepower to carry the hill due to the lack of torque in the higher rpm.... just like my horsepower converter in my automatic..... sorry speedshift for the derail...…..
Almost as if there's a number out there available to us that does the math for us.
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Old 10-16-2018, 05:53 AM   #53
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Is the magic number 7121 ?
Another question, whats more important VOLTS or AMPS flmao…………..
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Old 10-16-2018, 06:18 AM   #54
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I feel dumber after reading these last few pages, this is starting to look like one of those diesel fb groups full of mouth breathers arguing.
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Old 10-16-2018, 09:30 AM   #55
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Oh good Lord!

Your argument is void.

You've already been outlined why, take it or leave it.... Doesn't change the outcome of you being incorrect.
What exactly have you morphed my argument into? Realistically, I didn't offer an argument, there was nothing of substance offered on your part.

You outlined some tangent about variable displacement engines for whatever reason. It only exemplifies the fact that you didn't comprehend my analogy.

That's all I will be taking from your responses.

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Old 10-16-2018, 09:40 AM   #56
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Another analogy:


"Government doesn't matter, congress is all that matters!"

Replace government with HP and congress with torque.

Now do you see how silly the argument is?
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Old 10-16-2018, 02:06 PM   #57
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Do you understand why lawnmowers are only given a HP rating?
Yet again deflecting to a completely usless tangent.

I accept your surrender.
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Old 10-16-2018, 03:03 PM   #58
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Interesting. It's definitely a much simpler approach, but the tilt of the head angle to adjust TDC is just wacky when you look at the graphic. To imagine that in a car would be just unnerving for some reason to me.
It doesn't move during every rotation or anything, it moves with RPM to change compression ratio. It's a turbo charged engine. Very high compression at low RPM gets a turbo spooled and gives the car a lot of pep, then lowers compression at higher RPM so you can handle more boost and timing.
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Old 10-16-2018, 03:42 PM   #59
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Not a deflection truffle butter boy.....

Answer the phucking question, or can you?
I refuse to answer a question that have nothing to do with your lack of understanding of the difference between torque and hp.
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Old 10-16-2018, 03:52 PM   #60
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"Horsepower is a function of torque and rpm. Both are equally important. Double either and HP doubles. Double both and HP quadruples."

There's nothing to argue about it, the above statement rings true. 1 HP = 33,000 FT-LB/Min, 746 watts, etc....

What everyone gets bent out of shape over is the fact that engines produce varying torque values at different RPM levels.
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