Zetec inlet plenum

[Coozer]

Would have just been easier to route the steering arm round the plenum??

[gaz05]

It would have been Steve but because I've got the motor so far back every manifold I've tried on doesn't leave space for a coupling.

There is a manifold out there that only sticks out 180mm from the head but I've had a problem getting hold of one. This is the original Mondeo one.


If this doesn't come out looking decent then I'll have to look at some other method

[Coozer]

Oops, just realised you showed me it before

Old age eh? What??

[gaz05]

You've got a few years before you catch up with me, young un

[David_17]

An EFI cast alloy one from an escort or fiesta rs1800 would fit. (don't know if the bonnet would go on though as it goes up and over instead of down like the rest)

[gaz05]

I've recently sold one of those David. It was Huuuuuuge. Would have been way above the bonnet line even without the throttle body.

[gaz05]

Anyway, been doing a little research here.
http://horsepowercalculators.net/int...anifold-design
Seems the best method is to bring the pipes into the plenum and stop them above the floor of the plenum. They should also be rounded at the ends to help breathing so I spent a bit time peaning them a bit more by hand.



The dimensions I'm using are probably not ideal but apart from neccesity I'm doing this just to see if I can.

I'm also going to incorporate the idle control valve and that's going to be complicated because the valve lets air into the plenum by bypassing the butterfly and taking it from an opening on the outside of the venturi.