I-6 Vs. V-6
10-14-2005, 02:18 PM
#32
1.5 BAR
Join Date: Aug 2003
Posts: 1,194
Re: I-6 Vs. V-6
The piston is accelerated hundreds of g's when the engine is turning, gravity is 1g.
The rod is pulling the piston against the cylinder walls very hard hundreds of times per second. Sorry but it's not going to care about gravity.
The rod is pulling the piston against the cylinder walls very hard hundreds of times per second. Sorry but it's not going to care about gravity.
10-14-2005, 03:20 PM
#33
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Join Date: Feb 2005
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Re: I-6 Vs. V-6
Originally Posted by 45psi
Originally Posted by random-strike
Originally Posted by baldur
Originally Posted by random-strike
Originally Posted by ghettoturbo
think about it...each side of a v is an inline 3...so i doubt it loads the walls any different unless the design of the specific engine has a worse rod angle...at least thats how i understand it, im sure im wrong
Originally Posted by baldur
V engines are not different than straight engines when it comes to loading the pistons...
im sorry but you're both wrong, please understand i said cylinder walls not pistons. please notice that when a V engine rotates it is moving into the cylinder wall rather than straight up or down. and on the power stroke the piston is moving down at an angle thus putting more stress on the wall rather than moving down in a straight line
The cylinders are also not off-center.
you can see that on a i6 the static gravity pushes straight down towards the crank. On a v6, its pushes the piston up against the cylinderwall.
10-14-2005, 03:37 PM
#34
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Join Date: Aug 2003
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Re: I-6 Vs. V-6
Originally Posted by rawr
the stress on a v engine is going to be on the top of the piston from oil starvation. the oil is going to run to the bottom of the cylender and its going to keep it protected.
10-14-2005, 05:58 PM
#35
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Join Date: Dec 2002
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Re: I-6 Vs. V-6
Originally Posted by krustindumm
Originally Posted by baldur
Originally Posted by rawr
the stress on a v engine is going to be on the top of the piston from oil starvation. the oil is going to run to the bottom of the cylender and its going to keep it protected.
even with your theory the piston still has a horizontal surface for oil to collect on.
we can already prove through physics that there is no advantage for torque or power production, or for oiling. This leaves vibratoin, anyone care to take a guess which is more balanced?
10-15-2005, 06:16 AM
#37
1.5 BAR
Join Date: Aug 2003
Posts: 1,194
Re: I-6 Vs. V-6
Originally Posted by krustindumm
Originally Posted by baldur
Originally Posted by rawr
the stress on a v engine is going to be on the top of the piston from oil starvation. the oil is going to run to the bottom of the cylender and its going to keep it protected.
even with your theory the piston still has a horizontal surface for oil to collect on.
we can already prove through physics that there is no advantage for torque or power production, or for oiling. This leaves vibratoin, anyone care to take a guess which is more balanced?
And an inline 6 is more balanced. If you look at large diesels, most of them are inline 6 until they get to about 12 liters of displacement, then they usually go V12.
10-16-2005, 02:27 AM
#39
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Join Date: Jun 2003
Posts: 824
Re: I-6 Vs. V-6
It more depends on the amount of journals per 360* of crank. Most V6 have 3 journals, as opposed to an inline 6 having 6 journals. The more journals per 360* of crank, the smoother the motor. That is because you don't have as much time in between power strokes for friction to slow the rotating assembly down. Look at it like there's a more constant power supply than in a V6.
10-16-2005, 07:19 AM
#40
3.0 BAR
Join Date: Jan 2004
Posts: 5,933
Re: I-6 Vs. V-6
i just wanna add something about the 350z
they really just picked the v6 because thats the cheapest, most widely used engine they have in their new cars
its really all about the money
why waste money and time on r&d again when u can just use whats there and proven to work
they really just picked the v6 because thats the cheapest, most widely used engine they have in their new cars
its really all about the money
why waste money and time on r&d again when u can just use whats there and proven to work
