id me

[Brian (up north) Morris]

can anyone tell me what this manifold would have originally come off...just curious :-)

[Big Vern]

"if the firing order is 1243 then when using the standard manifold there will be times in the rev cycle that 1 and 2 arrive in the same place at the same time, shortly followed by 4 and 3. as the primary for 1 and 4 are more than double the length of 2 and 3. "

You've been sniffing too much cougar5 Ade :-)))

Since a 4 cyl engine has any event in any one cylinder 180 crank angle degrees apart there will never be any point at which any cylinder event occurs at the same time as any other cylinder.

Cast manifolds are cheaper to produce than tubular and unless the design is poor can perform equally as well.

[Brian (up north) Morris]

im not convinced their is much to gain otherwise why did for drop it for future cars....?????

[Jim (across the pond) Adamek]

OOPs steel not steal. :-)))

[Jim (across the pond) Adamek]

Cast iron is much cheaper to produce than steal. Those require the right bending and take more time to produce.

[Brian (up north) Morris]

in fact didnt the cosworth have a small ish cast manifold....no cross flowings their.... :-)

[Brian (up north) Morris]

fair play. so why did they produce the cast one.???????

[Steve Kerswell]

Another way to look at it is, though it's a compromise Ford spent a lot getting that manifold working, probably a lot more then Fred in his shed did when welding a four branch.

[Brian (up north) Morris]

thanks steve. i think for me longevity is better ....i can also get a stainless exhaust made if i have a good starting point eg manifold :-)))

[Adrian Southgate]

if the firing order is 1243 then when using the standard manifold there will be times in the rev cycle that 1 and 2 arrive in the same place at the same time, shortly followed by 4 and 3. as the primary for 1 and 4 are more than double the length of 2 and 3. 

Read it back in the morning it will make more sense...

[Brian (up north) Morris]

lol thanks ade lmfao. im still not convinced it makes that much difference .....its just gas down a pipe. so what happens to a engine with no manifold. ???? sorry if i sound thick but i am lol