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inline 6 vs. V6?

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Originally posted by: otispunkmeyer
V6 is smoother becuase there are more balanced simply by design. think of it as the cylinders are pushing against each other when they mcve up n down. in theory each piston show move with the same force so the forces cancle out.

in a in line engine, the pistons push against the crank, and after a while you start getting them ticking noises. they are more unbalanced. but when its done right like BMW's inline 6's they are every good.
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😕:roll:
 
Originally posted by: 95SS
Originally posted by: otispunkmeyer
V6 is smoother becuase there are more balanced simply by design. think of it as the cylinders are pushing against each other when they mcve up n down. in theory each piston show move with the same force so the forces cancle out.

in a in line engine, the pistons push against the crank, and after a while you start getting them ticking noises. they are more unbalanced. but when its done right like BMW's inline 6's they are every good.
Click to expand...

😕:roll:
Click to expand...


fill me in 😀
 
i believe in a "W" configuration, the cylinders meet at about a 72 degree angle? correct me if im wrong

i think its that way in VWs W8 and W12
 
the Inline 6 offers far better balance than a V6 engine, this is because of the odd number of cylinders per bank, often a balancing shaft is required to assist the V6's engine balance, in an inline 6, most types share similar crank layouts (7 main bearing) simple because it offers excellent balance, and allows for a larger bore and stroke with in a reletivly compact block, while the V6 is smaller it is limited in size simply because of the balance characteristics, an inline 6 all produces better torque charactiristics as well allowing for better lower end torque compared to a V6. balance is the same reason that their is no inline 8's a V8 with it's block set a 90 degrees, which is common to most Ford, GMH and Chrysler V8's offers the best balance of any engine type, even better than the horizontally opposed 6 used by porsche. the V8 allows for a compact but high capacity engine, with a straight eight the crank shaft is far to long and torsional vibration becomes a massive problem, it requires a large and heavy harmonic balancer to correct it. smaller lighter balancer's can be used on the inline 6 and V8 and this allows for a very smooth operation, good torque charactristics, generally good reverbility.
 
Originally posted by: PowerMac4Ever
Originally posted by: Amol
i believe in a "W" configuration, the cylinders meet at about a 72 degree angle? correct me if im wrong
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omg...
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what?!

i don't even have my permit and i'm trying to edumacate myself about cars!

doesn't help if i ask something or say something and then people go, "OMG, what a dumbass"

especially in a computer forum, where if someone doesnt know something, people shouldn't call that person dumb or something
 
Originally posted by: otispunkmeyer
Originally posted by: 95SS
Originally posted by: otispunkmeyer
V6 is smoother becuase there are more balanced simply by design. think of it as the cylinders are pushing against each other when they mcve up n down. in theory each piston show move with the same force so the forces cancle out.

in a in line engine, the pistons push against the crank, and after a while you start getting them ticking noises. they are more unbalanced. but when its done right like BMW's inline 6's they are every good.
Click to expand...

😕:roll:
Click to expand...


fill me in 😀
Click to expand...


Are you serious?

/Checks sarcasm meter
 
I should add that the 60 degree bank angle required for a smooth operation by V6's is far from the optimal 90 degree used in V8's and most V10 types, at 60 degrees the cylinder arangement is very narrow and is prone to alot of vibration which is why a secondary balancing shaft is required in most V6 designs, however the V6 does offer better fuel consumption than a similar setup on an inline 6.
 
the slant 6 is nothing more than an inline 6 layed on it's side at about 60 degrees or so, most BMW inline sixes are based on this layout, but the slant 6 is popular with Chrysler enthusists in Australia because it is easy to adapt EFI and big turbos for decent power output, I have been in a VC Valiant that had a 225 slant 6 in it with a torqueflight auto it produced about 360hp at the wheels by using late model EFI and a TO4 turbo, it went like a dog shot in the ass, so to speak😀
 
Originally posted by: Amol
Originally posted by: redly
why not a straight 8?? besides size
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SIZE
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The crackshaft would be too long, so it should be made stiffer and heavier. Heavy moving pieces in engines reduce the max rpm.
Also, aligning everything in a long engine would be more difficult. Another thing, the engine block must be also strengthened against flexing, and it would be heavier for a certain capacity (I think).
Also, if you would use it in a car, then you could only have a car with a very long engine compartment.
 
Originally posted by: Wadded Beef
Originally posted by: otispunkmeyer
V6 is smoother becuase there are more balanced simply by design. think of it as the cylinders are pushing against each other when they mcve up n down. in theory each piston show move with the same force so the forces cancle out.

in a in line engine, the pistons push against the crank, and after a while you start getting them ticking noises. they are more unbalanced. but when its done right like BMW's inline 6's they are every good.
Click to expand...

horizontally opposed engines like the boxer push against eachother...v6 is at an angle
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No, I don't think they don't push against each other - I think the cylinders fire one at a time, and not two by two. At least that's the way they work in a inline 4.
 
Originally posted by: Stumps. . . it went like a dog shot in the ass, so to speak😀
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Australians have the best colloquialisms. The average Aussie puts our best "redneck" stand-up comics to shame.
 
Originally posted by: Calin
Originally posted by: Wadded Beef
Originally posted by: otispunkmeyer
V6 is smoother becuase there are more balanced simply by design. think of it as the cylinders are pushing against each other when they mcve up n down. in theory each piston show move with the same force so the forces cancle out.

in a in line engine, the pistons push against the crank, and after a while you start getting them ticking noises. they are more unbalanced. but when its done right like BMW's inline 6's they are every good.
Click to expand...

horizontally opposed engines like the boxer push against eachother...v6 is at an angle
Click to expand...

No, I don't think they don't push against each other - I think the cylinders fire one at a time, and not two by two. At least that's the way they work in a inline 4.
Click to expand...

False. They fire 2 cylinders at a time.

Great thread! :thumbsup:
 
Originally posted by: SuperSix
Originally posted by: Calin
Originally posted by: Wadded Beef
Originally posted by: otispunkmeyer
V6 is smoother becuase there are more balanced simply by design. think of it as the cylinders are pushing against each other when they mcve up n down. in theory each piston show move with the same force so the forces cancle out.

in a in line engine, the pistons push against the crank, and after a while you start getting them ticking noises. they are more unbalanced. but when its done right like BMW's inline 6's they are every good.
Click to expand...

horizontally opposed engines like the boxer push against eachother...v6 is at an angle
Click to expand...

No, I don't think they don't push against each other - I think the cylinders fire one at a time, and not two by two. At least that's the way they work in a inline 4.
Click to expand...

False. They fire 2 cylinders at a time.

Great thread! :thumbsup:
Click to expand...

False. They typically fire one at a time; unless something has changed with the newer coil on plug and computer controlled ignition technologies. The traditional motor with a distributor type ignition fires one cylinder at a time. The firing order is very specific.

 
You could probably make a compact I8 engine by designing the cylinder in an oval shape.

Another option is to align the cylcinders in a 2/1/2/1/2 shape, like this:

OO 1
.O. 2
OO 3
.O. 4
OO 5

1 would fire, 3 would fire, 5 would fire, then 2 and 4 would fire.
 
Originally posted by: Papagayo
Audi makes inline 5..

Very nice engine..
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I thought they stopped making those ages ago...currently Audi uses V6s and V8s. You might be thinking of 5 valves per cylinder. Then again, that doesn't apply to the DFI engines that have 4 valves and an injector.
 
I-6: Very strong, doesn't need balencing to be smooth. Is heavy and rather long.
V6: Shorter, lighter, sometimes made by hacking two cylinders off of a V8. Needs alot of work to be smooth, not nearly as strong.
 
Originally posted by: otispunkmeyer
V6 is smoother becuase there are more balanced simply by design. think of it as the cylinders are pushing against each other when they mcve up n down. in theory each piston show move with the same force so the forces cancle out.

in a in line engine, the pistons push against the crank, and after a while you start getting them ticking noises. they are more unbalanced. but when its done right like BMW's inline 6's they are every good.
Click to expand...

You are so wrong on so many levels. The I6 is a perfectly balanced engine design.
 
Originally posted by: FrustratedUser
Originally posted by: otispunkmeyer
V6 is smoother becuase there are more balanced simply by design. think of it as the cylinders are pushing against each other when they mcve up n down. in theory each piston show move with the same force so the forces cancle out.

in a in line engine, the pistons push against the crank, and after a while you start getting them ticking noises. they are more unbalanced. but when its done right like BMW's inline 6's they are every good.
Click to expand...

You are so wrong on so many levels. The I6 is a perfectly balanced engine design.
Click to expand...

You missed the Pwnage boat, it departed several hours ago. 😉

- M4H
 
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