Why cant I-6s have 3exh. ports on right and 3 on left????

[The Iceman]

This may sound dumb and pointless but I was just wondering during class today

Why cant Inline 6s have exhaust ports point out the left side and 3 out the right side???
Basically the intake ports could be the same and then have 3 of the cylinders, say 1 3 and 5, have the exhaust ports on the rigth side and cylinders, 2 4 6, have the exhaust ports head out on the left side of the engine???

Is it not mechanically possible? or is it just not worth it?
I mean it would make header clearance a bit easier around the starter area perhaps and would allow for V8 style exhaust kits to literally almost bolt right up (not that that matters )

Thanks for answering my curiosity

 

[Anonymous]

if i'm thinking right, there would be some camshaft issues wouldnt there?

 

[Anonymous]

if this is a newly designed, complete engine, im sure its possible using an SOHC or DOHC setup. you could also split the intake into right and left, and have a sort of double crossflow. dont know how much something like that would help power and all, but it would be interesting looking.....

 

[The Iceman]

hmm, so would it work or wouldnt it? haha
Im still curious
we have guesses as to why it wouldnt work but someone has to haev answers
responding to my fairly ignorant-engine-knowledge post is greatly appreciated, so thanks for the replies so far!!!

 

[Anonymous]

Yes it would work..if there is an engine out there that has one, then obviously yes, but if there isnt, then you would have to make your own head somehow. It would be nice, but like the others said, an overhead cam would be the ticket for the valvetrain. But it should be possible. The Alan Johnson drag head for the 300 as well as FTF's crossflow heads that he uses on his drag are cross flow, which wouldnt be much harder to make than a head like the one you explained. You would have to use some type of intake plenum or special intake to get your 3 intakes on one side and 3 on the other side supplied. It would be a crossflow head, but the intake and exaust would be mixed up for 3 per side.

The camshaft would have to be custom because the intake valves would be in a totally different place than on a regular crossflow, for that matter the standard ported head with all ports on the same side. Since you have intake and exhaust entering and exiting from different sides of the head, the camshaft would have to be made to open the correct valve at the correct time on the correct cylinder.

I hope that kinda makes sense...its hard to put it into words

 

[StrangeRanger]

Actually, it wouldn't work very well. You'd destroy all of the pulsation effects in the intake and exhaust manifolds which add power to the engine, unless you split it so that the pulses were 120 degrees apart in each manifold. That would require 1-3 exhaust on one side of the engine and 4-6 on the other side. All you'd be adding is complexity amd cost.

 

[rbohm]

8) it would work if set up right. you can even reverse the flow and use the exhaust ports as the intake if you like. the question however becomes, is it worth the effort and expense to do something that different? if the answer is yes then go for it.

 

[StrangeRanger]

To get an engine to run at its best you need evenly spaced pulses in the intake and exhaust manifolds. That's one of the things an I6 gives you for free, especially if you split the manifolds like Ford has on the EFI engines. If you unbalance the pulses, you lose power. That's why mant race only V-8 engines rely on a single plane crank, because despite the vibrations that it sets up, it will make more power than a conventional dual plane. The firing order is fixed by the crank and cannot be altered on an I6. Moving alternate cylinders into opposing manifolds will give some very strangely unblalnced pulses. There is no way it would work properly.

 

[LEROY POLL]

HELLO ICEMAN


.....I BELIEVE THIS IS WHAT A"V6" DOES. IT MEET ALL OF YOUR NEEDS. IT IS JUST NOT INLINE.

LIVE IN GRACE

LEROY POLL

 

[The Iceman]

thanks for satisfying (actually OVER-satisfying now haha) my curiosity!!! 8)

 

[Anonymous]

On the I6 you could run one of two firing orders without changing the crank. The 7MGTE uses a 142635 firing order instead of our 153624. A change in cam is all you'd need to get that different firing order you'd need. It wouldn't net you anything though.


-=Whittey=-

 

[MustangSix]

Whittey, that's the same firing order, just in a different counting sequence. Lay them out:

153624153624153624 is the usual pattern

1426351426351426351 7M-GE is the same 153624 pattern, only counted from the rear.

Jags are the same way. The difference is the way the cylinders are numbered. #1 is at the rear.

 

[Thad]

ICEMAN,

When was the last time your drinking water was tested?

:roll: :roll: :roll: :roll: :roll: :roll:

 

[The Iceman]

haha actually the water out on most of Long Island is known to cause cancer over a period of time (a good number of years supposedly)

haha but I have a PUR Ultimate Filter, so im just crazy naturally

 

[Thad]

Yeah,
As long as we can laugh at ourselfs, we will make it.

 

[Anonymous]

I recently picked up Santucci's Chevy Inline power manual.

It has quite a few (pictures and info) different and radical hybrid heads that some folk raced successfully and unssuccesfully.

Many were V8 heads cut and welded, thus gaining the crossflow.

If you have the necessary components such as money, desire and time...it can be done.

Ctown :checks: