header design in general

[Doubt_Incarnate]

i was talking with my dad one day about cars and this came up. neither one of us are mechanics or engineers so i figured id throw it in here for some scrutiny.

For a "V" configured motor, where normally one cylinder from each banck fires in seccesion, and in order to make the best scavanging from the primaries, wouldnt it best to run the primary from number 1, under or around the motor somhow to get it to match up to number 2?

so in our fwd motors, wouldnt it be best to run number 2 from the front, under the pan, and let it be scavanged by number 1? and 3-4, and 5-6... etc. the collect those 3 and put in an o2 sensor, like 6 to 3 to 1. or maybe even better, a 6 into 1. i know its probly not practical.

this isnt just for our cars, since every v i know of fires back and forth.

[v6h.o.]

RE: header design in general

Yes technically, But what you end up with is a rats nest worth of header tubes

[vsop4me3.1]

RE: header design in general

disclaimer: I too am not a mechanic or engineer of any type. in fact I have only 1 semester of H.S. math. Actually 90% of what I know (automotive wise) comes from this site.

as long as all the primaries are equal length and diameter should'nt they scavenge the same? so it really would'nt matter which pipe runs where.

[Doubt_Incarnate]

ok, so it would be a good idea if it fit. i just figured that each cylinder firing in succesion would better scavange its predesecor #1-#2, or whatever, than #2 does #4 and so on. this was probly one of the most useless posts, but if it was possible to make such a setup, would the gain be worth the trouble?

[Azrael]

If you make the primaries the right length/width one cyl. can actually scavenge the adjacent cyl. instead of the next firing one. (eg: cyl. 1 can scavenge cyl. 3). This might require really long or really wide primaries though.