V6 vs. I6 (YACT)

[skyking]

One of the major design considerations with inline engines is crankshaft and engine block stiffness. Power pulses flex an inline crank more severely, as well as the block skirt that supports the crankshaft. It is one of the limiting factors in inline high-output engine designs.

 

[Scarpozzi]

Originally posted by: rgwalt
I've got an I6 in my Jeep.

Just thought I would share.

Ditto. It's a great engine, but idles a little rough. However, I know it's stable, so I don't mind.

 

[JC]

Originally posted by: ElFenix

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.

actually a V8 is harmonicly balanced as well... i'm guessing its because theres a power stroke on each bank on the same 1/2 rev

V8s fire every 90 degrees (720/8), hence the smoothness.

Also, modern V6s use split crankpins to even out the firing impulses. I believe Buick popularized this with their 'even-fire' V6s of the late 70s.

JC

 

[WinkOsmosis]

My I4 owns all 6es!!

 

[ElFenix]

Originally posted by: Jellomancer
My I4 owns all 6es!!

VQ35 > 240sx engine

now if you could cram a VQ in there... i'd be impressed

actually i wouldn't mind cramming a VQ30 into my car... i wonder if its doable?

 

[Deleted member 4644]

I have an inline turbo in my volvo.

 

[ElFenix]

Originally posted by: LordSegan
I have an inline turbo in my volvo.

the 5 cylinder one?

 

[Doggiedog]

I'd like to see what those old inline 12s from the early days of autos looked like. I was at the mechanics a while ago and they were working on a V12 MB S600. I can't believe how they shoe horned that thing in. There was absolutely no space for anything left in there.

 

[KingNothing]

Originally posted by: Doggiedog
I'd like to see what those old inline 12s from the early days of autos looked like. I was at the mechanics a while ago and they were working on a V12 MB S600. I can't believe how they shoe horned that thing in. There was absolutely no space for anything left in there.

Inline 12? Link?

 

[JC]

Originally posted by: KingNothing

Originally posted by: Doggiedog
I'd like to see what those old inline 12s from the early days of autos looked like. I was at the mechanics a while ago and they were working on a V12 MB S600. I can't believe how they shoe horned that thing in. There was absolutely no space for anything left in there.

Inline 12? Link?

Yeah! Longest inline I recall is the straight-8....

 

[KingNothing]

Originally posted by: JC

Originally posted by: KingNothing

Originally posted by: Doggiedog
I'd like to see what those old inline 12s from the early days of autos looked like. I was at the mechanics a while ago and they were working on a V12 MB S600. I can't believe how they shoe horned that thing in. There was absolutely no space for anything left in there.

Inline 12? Link?

Yeah! Longest inline I recall is the straight-8....

That sounds vaguely familiar but I don't remember which car it was in...link?

 

[JC]

Originally posted by: KingNothing

Originally posted by: JC

Originally posted by: KingNothing

Originally posted by: Doggiedog
I'd like to see what those old inline 12s from the early days of autos looked like. I was at the mechanics a while ago and they were working on a V12 MB S600. I can't believe how they shoe horned that thing in. There was absolutely no space for anything left in there.

Inline 12? Link?

Yeah! Longest inline I recall is the straight-8....

That sounds vaguely familiar but I don't remember which car it was in...link?

Buick used 'em.....here's a link

 

[Iron Woode]

Best I6 ever was the Mopar Slant 6. Nothing better has been made since.

Don't forget Cadillac V16.

big i6s: 300 cid Ford, 292 chevy, 272 (not sure of exact displacement) Mopar.

 

[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.

 

[LAUST]

.

 

[hans007]

my dad's 89 maxima had a i-6 . 190hp. at the time that was a lot for a sedan.


i-6's are harder to fit into a smaller car, because of the shape. most euro cars seem to have inline though.

 

[LittleWolf]

i-6's are harder to fit into a smaller car, because of the shape. most euro cars seem to have inline though.

That's where the brilliant VR6 comes into play. Hybrid of both I-6 and V6.

 

[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!

 

[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.

V6 squarer shape so easier to fit in shorter space. Also inherently somewhat smoother.

Not true. An I6 has perfect balance, whereas a V6 has less than perfect end to end balance. This link will show you.

 

[WinkOsmosis]

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.

Who? What? My Nissan? Crap....

 

[geno]

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.

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

 

[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!

 

[geno]

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!

The slant 6 ownz j00

<-- the motor in my car is derived from it

 

[UNCjigga]

Boxer 6 pwnz j00 all! I miss the ol' Subaru 2.5GT my dad used to drive (only a Boxer 4, but still a Boxer!)

 

[WinkOsmosis]

What slant 6 are you talking about??