Straight 6 vs Bent 8. Torque difference?

TORQUE

 

Nice car SIX! Very cool.

Now, you can build any engine to do what you want it to do.

For instance, a torque motor likes some back pressure in the exhaust. Now if you want to make more HP, you want to free the exhaust, you'll make more power up top but you will lose some at the bottom. It's just a trade, you want to go fast, you have to have enough space on the intake and exhaust sides to flow a lot of air but this kills the low end power.

It's all in what you want to do.

Do you want to go fast?

Do you want to tow a boat?

The way the motor is laid out is not as important as the size and the set up.


Tom

 

Motors that like back-pressure (the entire list):
1.
2.
3.
4.
1,000,000.

 

No. The inline configuration in and of itself does not produce more torque than the V configuration.
The inline configuration does have better inherent balance than the V configuration.
To the degree that inherent balance can affect torque at a higher rpm...maybe slightly.
Comparing apples to apples, and oranges to oranges, the affect of inherent balance on torque is small potatoes.​

 

So, if you put 2 1/8 headers on a stock engine it makes more power?

Tom

 

Just to muddle things further...

8 pistons have 33% more power than 6.

BUT...

6 pistons have only 25% less power than 8.

WTF!

 

Rickybop, when calculating percentages of things, the of is important.

That is because the difference, 2, is 1/3 of the original value you're talking about; 6.

That is because the difference, 2, is 1/4 the original value here; 8.

Another example of how the order of operations is important when talking about percentages:

If gasoline costs $1.00 per gallon and the price increases 50%, it then costs $1.50 per gallon. Then if the price decreases 50%, it now costs $0.75 per gallon.

 

I was told some years ago that Henry Ford's flat six in the shoe box era ran more HP (110hp) than his V8 (100hp) of the same years, but he de-rated his advertising to enhance the myth of his sidevalve V8.

The other thing I was told was when Henry Ford need torque in the early days for his big trucks he always fell back on his 6 cylinder engines.

Whether any of this rings true I would not know, but it did sound plausable to a green horn like me.

 

mr.fahrt,
It's also important, when calculating the intention of someone's words, that you take into account the percentage of likelyhood that they're joking. Hahahaaha! I was joking, pal. That's OK...I thought that the Northwest Social Group here had really morphed into the YUGO Group!...But it was a joke. Hahahahaha!

 

We are not talking about a generator with an even load and steady state RPM. In an automotive engine it is very desirable to have an engine that can handle a variety of loads and RPM ranges. Most American drivers prefer smooth and torquey. The inline engine is very smooth in it's delivery because of it's inherent design. But space and safety being paramount these days, it's a form factor that is dying off.

 

The Germans like it ok.

 

Sixes are fun! More fun than V8s and less expensive. They also require a bit of creativity. They will do anything you need them to do. They also really annoy V8 only people especially when they beat them at the track.
That might be the best reason to have one!
Don

 

An L6 is "smooth" only in that it has no inherently bad balance characteristics... when spinning on a test stand, with the plugs out, spark off and no gas.
All balance remarks assume that compression, vacuum and power loads are absent.
Now, after the engine is actually started, the smoothness of power delivery is more regular pretty much in inverse proportion to the interval between firing strokes: which is less, 90° or 120°?

Again: an L6 crank is heavier than a V8 crank of comparable cylinder size, or displacement, and will generally have even higher inertia due to mean radius of gyration at a greater distance.
Which argument are you making? Smoothness (high inertia) or performance (low inertia)?

Again: both V8 and L6 engines have counterweights.

 

6s are very smooth. Very powerful and seem to cause "panic"
Just because one doesnt like them doesnt make them bad. I personally hate diesels , with a passion . Everytime I hear one I think "Stinken und Klinken". Still i understand some folks actually like the smelly bastards. As long as I dont have to drive one it is ok by me. Same goes for inline sixes. Might not be your cup of tea but it was and is still a very very popular design. Criticizing it with all kinds of esoteric theories is pointless because we all realize you just dont like them , period.
Some of us really like them but dont hate V8s either. I would be one of those. There is a wonderful feeling of satisfaction driving a hot six. Gives one almost a permanet grin.

 

can someone discuss applying common crankpin locations to a siamese intake port inline 6, in 3 pairs, 120 degrees apart, in effect creating 3 paired twins?

 

Rickybop, good joke. Went right over my head. Didn't mean to insult your intelligence. You have to admit though, that it's not unlikely for someone on the internet to get confused by your statement. I hope my explanation cleared it up for them.

 

My "Torque Monster"

John Deere 830 twin cylinder, 6.125" bore. 8 inch stroke(!!!), 471 cubes, 75hp @ 1125 rpm

They didn't measure torque back then -- be interesting to know.

 

Isn't that the configuration the Hudson Hornet had? If so, looks like it can be made to work.

Bill

 

---------------- Now playing: Echo & the Bunnymen - Villiers Terrace via FoxyTunes

i could not have cited a working mass-produced example of one, but it does seem like an end-run around the siamese port-sharing issue. kinda like an inline 6 version of the Winfield two-up-two-down