V6 vs. I6 (YACT)

[Brutuskend]

these

And these

 

[WinkOsmosis]

Originally posted by: Brutuskend
these

And these

Too bad that site has no real info on the slant 6 since it's made for people who already know about it. I can't find anything on Google.

 

[Brutuskend]

I found this on google.

 

[geno]

...and this on Allpar....

 

[JC]

Originally posted by: Brutuskend
As I recall, Pontic used a straight 12 as well.

Again, I don't recall any inline engine longer than 8 cylinders. Link?

 

[Brutuskend]

Well this isn't the Pontiac, but if you look at the bottom of the page you will see they had straight 12's back in 1927.

You will also find they used a LOT of inline 12's in aircraft.

 

[JC]

Originally posted by: Brutuskend
Well this isn't the Pontiac, but if you look at the bottom of the page you will see they had straight 12's back in 1927.

That's nuts! The crank must have been one long noodle

 

[mAdD INDIAN]

Originally posted by: JC

Originally posted by: Brutuskend
Well this isn't the Pontiac, but if you look at the bottom of the page you will see they had straight 12's back in 1927.

That's nuts! The crank must have been one long noodle

hopefully a little thicker and more rigid than a noodle!

I6s are harmonically balanced while V6s are not. They need counter shafts to keep the engine smooth. That said, V6s are economical and practical because of their size and packaging. I6s need a lot of room.

HOwever, many manufacturers do have smooth-as-silk V-style engines, such as Toyota's V6, Nissan's VQ V6, VW VR6 V6 engine..etc..

Oddly enough, the first Nissan/Datsun products in NA where all I6s and many Japanese manufacturers still use inline 6s in their home countries.

 

[WinkOsmosis]

Originally posted by: geno
Yes, the I6 will have more torque due to there being less of a deflection in angle of the pistons/rods (all of which reciprocate in the same direction), and a V6 will have more top end due toe there being less mass in the rotating assembly (smaller crank). Of course, these are merely the inherant qualities of each engine, that doesn't mean you can't have a high revving I6 (I've seen a 2.6 I6 in a Skyline redline at over 11,000 RPMs) or a tourquey V6.

What does it matter which directions the pistons move? It gets turned into rotation anyway.

 

[Gyrene]

Originally posted by: BatmanNate
Toyota makes a pretty wicked I6, seeing as you can boost it into the 500-600 HP range with stock internals. The inline 6 in my older supra will take some pretty wicked boost too, I'd be willing to pit it against your Nissan.

In the new gen supra, the block can handle up to 30 psi of boost, producing well over 500 horses, however the stock twin setup can't take that much. Most people switch out the twins for a larger single turbo, crank the boost to about 25-27 psi, and produce around 600-700 on stock internals. If I had the money, or the balls to drive something that powerful, I would too.

 

[Iron Woode]

Originally posted by: Brutuskend
As I recall, Pontic used a straight 12 as well.

I can't believe no one has nentioned the Slant 6.

That was one peppy little 6!

I mentioned it.

Slant 6 came out in 1960 for the Valiant. An all aluminum version came out in 1961 at 225 cid. Hyperpak versions came out in 1962. Made close to 200 HP back then.

Best dependible 6 ever made.

On another note: Pontiac made an i6 with overhead cam. These came in several flavours. The best was the Sprint. Offered in the Firebird only it made 205 hp.

 

[skyking]

Nissan makes a mean I6 too, the only difference is they've never offered it here in America

Grandaddy of that engine: 240Z, 260Z, 280Z

 

[BatmanNate]

Originally posted by: dtyn

Originally posted by: BatmanNate
Toyota makes a pretty wicked I6, seeing as you can boost it into the 500-600 HP range with stock internals. The inline 6 in my older supra will take some pretty wicked boost too, I'd be willing to pit it against your Nissan.

In the new gen supra, the block can handle up to 30 psi of boost, producing well over 500 horses, however the stock twin setup can't take that much. Most people switch out the twins for a larger single turbo, crank the boost to about 25-27 psi, and produce around 600-700 on stock internals. If I had the money, or the balls to drive something that powerful, I would too.

Yep. Doesn't swapping out the twins in favor of a large one lead to a lot of lag though? I just got the plain jane CT-26 in mine.

 

[KGB1]

Originally posted by: Iron Woode

Originally posted by: Brutuskend
As I recall, Pontic used a straight 12 as well.

I can't believe no one has nentioned the Slant 6.

That was one peppy little 6!

I mentioned it.

Slant 6 came out in 1960 for the Valiant. An all aluminum version came out in 1961 at 225 cid. Hyperpak versions came out in 1962. Made close to 200 HP back then.

Best dependible 6 ever made.

On another note: Pontiac made an i6 with overhead cam. These came in several flavours. The best was the Sprint. Offered in the Firebird only it made 205 hp.

The same 3.8 L 6 cylinder? In a firebird? Only inline? Cool.. Wow can I make my dads V6 bonneville inline?

It'll have same hp 205.. but hopefully more torque than the current 230. Also can I make my 4.3 Astro V6 inline? or Maybe a V8?

 

[LittleWolf]

Originally posted by: GTaudiophile

Originally posted by: NFS4

Originally posted by: GTaudiophile
From what I understand, V6 engines are inherently unstable. I6 engines are not.

Everyone knows that BMW makes the best I6 engines in the world, and they are renown for 1) their almost electric smoothness, and 2) ability to make their horses "seem" more powerful than others. Having driven a few BMW I6s and many V6s from Toyota/Infiniti, I have to agree with the twp points I just made.

Nissan's VQ V6 can make just about anyone forget about BMW's 3.0 liter I6

Such BS, NFS4

Go drive a G35 and then go drive a 330i. Compare 0-60 times. You'll find that one gets the job done while the other gets the same job done but is smooth as silk!

Quite right and not to mention that the Nissan (over-hyped) V6 sounds quite harsh and strained in it's higher HP versions. BMW's one of the best in I-6. Toyota and GM also make some pretty decent I-6.

 

[KokomoGST]

Originally posted by: LittleWolf

Originally posted by: GTaudiophile

Originally posted by: NFS4

Originally posted by: GTaudiophile
From what I understand, V6 engines are inherently unstable. I6 engines are not.

Everyone knows that BMW makes the best I6 engines in the world, and they are renown for 1) their almost electric smoothness, and 2) ability to make their horses "seem" more powerful than others. Having driven a few BMW I6s and many V6s from Toyota/Infiniti, I have to agree with the twp points I just made.

Nissan's VQ V6 can make just about anyone forget about BMW's 3.0 liter I6

Such BS, NFS4

Go drive a G35 and then go drive a 330i. Compare 0-60 times. You'll find that one gets the job done while the other gets the same job done but is smooth as silk!

Bah... as long as the car has powa, it's all good!

What about reliability? Are I6s supposedly more reliable mechanically due to better inherent balance? I guess this is kinda moot nowadays considering how long lasting and reliable all engines are now (barring recalls on engineering mistakes like crankwalk, blown gaskets, etc).
Quite right and not to mention that the Nissan (over-hyped) V6 sounds quite harsh and strained in it's higher HP versions. BMW's one of the best in I-6. Toyota and GM also make some pretty decent I-6.

 

[Gyrene]

Originally posted by: BatmanNate

Originally posted by: dtyn

Originally posted by: BatmanNate Toyota makes a pretty wicked I6, seeing as you can boost it into the 500-600 HP range with stock internals. The inline 6 in my older supra will take some pretty wicked boost too, I'd be willing to pit it against your Nissan.

In the new gen supra, the block can handle up to 30 psi of boost, producing well over 500 horses, however the stock twin setup can't take that much. Most people switch out the twins for a larger single turbo, crank the boost to about 25-27 psi, and produce around 600-700 on stock internals. If I had the money, or the balls to drive something that powerful, I would too.

Yep. Doesn't swapping out the twins in favor of a large one lead to a lot of lag though? I just got the plain jane CT-26 in mine.

Yea, you wouldn't have a stoplight-to-stoplight racer anymore, but the supra wasn't designed for that anyway. (Plus, you shouldn't be racing on the streets). But on the track you would have a beast. I'm already having traction problems, so I don't think I need more power . One of my friends from the track has a Turbonetics T-78 on his MKIV, and that thing is a beast. We raced last month (on the track), and I had him up until we shifted into second...then he was gone. Of course, he also has a 150 shot from Holley...which he felt inclined to use, just so he could embarass me all the more. If only I had his kind of money...I would have a badass car.

 

[GTaudiophile]

Originally posted by: LittleWolf

Originally posted by: GTaudiophile

Originally posted by: NFS4

Originally posted by: GTaudiophile
From what I understand, V6 engines are inherently unstable. I6 engines are not.

Everyone knows that BMW makes the best I6 engines in the world, and they are renown for 1) their almost electric smoothness, and 2) ability to make their horses "seem" more powerful than others. Having driven a few BMW I6s and many V6s from Toyota/Infiniti, I have to agree with the twp points I just made.

Nissan's VQ V6 can make just about anyone forget about BMW's 3.0 liter I6

Such BS, NFS4

Go drive a G35 and then go drive a 330i. Compare 0-60 times. You'll find that one gets the job done while the other gets the same job done but is smooth as silk!

Quite right and not to mention that the Nissan (over-hyped) V6 sounds quite harsh and strained in it's higher HP versions. BMW's one of the best in I-6. Toyota and GM also make some pretty decent I-6.

Quite right. The G35 sounds quite harsh at high RPMs and creates a lot of vibration. Feels very harsh.

 

[JC]

Originally posted by: Iron Woode

Originally posted by: Brutuskend
As I recall, Pontic used a straight 12 as well.

I can't believe no one has nentioned the Slant 6.

That was one peppy little 6!

I mentioned it.

Slant 6 came out in 1960 for the Valiant. An all aluminum version came out in 1961 at 225 cid. Hyperpak versions came out in 1962. Made close to 200 HP back then.

Best dependible 6 ever made.

On another note: Pontiac made an i6 with overhead cam. These came in several flavours. The best was the Sprint. Offered in the Firebird only it made 205 hp.

Lemme step in here. The Pontiac 'Sprint' OHC 6 made as much as 215hp (10.5:1 compression, bigger cam, Quadrajet 4bbl), and was offered in the Tempest/LeMans and Firebird.


Here's an old Pontiac ad.

JC

 

[rootaxs]

Originally posted by: GTaudiophile

Quite right. The G35 sounds quite harsh at high RPMs and creates a lot of vibration. Feels very harsh.

Sounds fine on a Maxima though.

 

[Hamburgerpimp]

What 6Cyl engines does Toyota use? I know this Tacoma I just bought has a V6.

 

[Phuz]

Originally posted by: GTaudiophile

Originally posted by: LittleWolf

Originally posted by: GTaudiophile

Originally posted by: NFS4

Originally posted by: GTaudiophile
From what I understand, V6 engines are inherently unstable. I6 engines are not.

Everyone knows that BMW makes the best I6 engines in the world, and they are renown for 1) their almost electric smoothness, and 2) ability to make their horses "seem" more powerful than others. Having driven a few BMW I6s and many V6s from Toyota/Infiniti, I have to agree with the twp points I just made.

Nissan's VQ V6 can make just about anyone forget about BMW's 3.0 liter I6

Such BS, NFS4

Go drive a G35 and then go drive a 330i. Compare 0-60 times. You'll find that one gets the job done while the other gets the same job done but is smooth as silk!

Quite right and not to mention that the Nissan (over-hyped) V6 sounds quite harsh and strained in it's higher HP versions. BMW's one of the best in I-6. Toyota and GM also make some pretty decent I-6.

Quite right. The G35 sounds quite harsh at high RPMs and creates a lot of vibration. Feels very harsh.

Oh, yes, so very harsh. What a CRUDE piece of machinery.

 

[SherEPunjab]

my car is v6 my mom's car is i-6. i have 10 more hp than her car. But her car has awesome pickup. it 'feels' much torquier, and solid.

 

[Iron Woode]

Originally posted by: JC

Originally posted by: Iron Woode

Originally posted by: Brutuskend
As I recall, Pontic used a straight 12 as well.

I can't believe no one has nentioned the Slant 6.

That was one peppy little 6!

I mentioned it.

Slant 6 came out in 1960 for the Valiant. An all aluminum version came out in 1961 at 225 cid. Hyperpak versions came out in 1962. Made close to 200 HP back then.

Best dependible 6 ever made.

On another note: Pontiac made an i6 with overhead cam. These came in several flavours. The best was the Sprint. Offered in the Firebird only it made 205 hp.

Lemme step in here. The Pontiac 'Sprint' OHC 6 made as much as 215hp (10.5:1 compression, bigger cam, Quadrajet 4bbl), and was offered in the Tempest/LeMans and Firebird.


Here's an old Pontiac ad.

JC

My bad. Its been a long time since I checked that Pontiac out. Memory is fading fast. I thought it was only in the Firebird you could get the HO version.

 

[Howard]

Originally posted by: vi_edit
A "V" engine is unbalanced and has a rotating mass to it if I remember the correct terminology. They are inheriently inefficient. Since an inline engine has pistons that go straight up and down, instead of at an angle, it doesn't have that rotating mass robbing it of power accounting for the better output.

??

What kind of V6 has pistons that move at an angle? I assume you mean 'angle' as in, angled away from the piston's center axis (excuse my crappy terminology).