Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) Airbox - Help needed to identify this picture

Here are different systems described which make their owners obviously happy, and the cars seem to work well under everyday circumstances.

Otherwise this is an interesting discussion, also on a technical level.
Ok, taking into account the explanation regarding too much hot air under the bonnet reaching open filter systems I'm wondering if the (hopefully) warm air protecting enclosure of the Rapid Engineering system allows to get a sufficient amount of cold air from outside via the side louvres. And if so, the question could arise if the filter will get this cold air from all around...if that matters.

A fascinating thread chaps with some very good comprehensive posts

Heinz. As far as I can see that system would be able to get a relatively cool air intake but it would not be optimum for two reasons: firstly it is drawing air from and area of known turbulance, and secondly the intake length is very short and would do nothing to help flow. A properly tuned intake length will give a stack of air in constant flow (momentum) that will aid torque and power at the rpm desired by the designer.

I have even considered using one of the available airboxes over my throttle bodies and an intake tube leading over the radiator. That may even work better than a bonnet scoop.

Peter, do you mean turbulances which are generated outside of the engine bay at the area of the lower louvres, caused probably by the front wing which is broader and higher being seen from that perspective which therefore works like a barrier...not allowing a direct flow of fresh air to the mentioned area?

Exactly. But then it is hard to know just where you would find a turbulence free area on a Morgan.

Isn't there a post here in TM or in Morganatica where someone did videos of his car with wool strands all over it to show airflow?

I think it's on you tube.

would be great if someone could post the link of the youtube video.

I'm about to do some research, step by step.. First step is to relocate the MAF sensor close to the Throttle body. I will try to achieve this by tomorrow. Everything else will remain untouched. I have a hose/ tube including a MAF sensor of a Ford Focus, placed into a short plastic tube, and I want to fit it close to the TB, as it is done by the original Ford cars. Then connecting it to the standard induction of the 4/4. May be I have to saw a bit away of the standard metal tube.

A home made, do it yourself solution may be to fix a Go-Pro camera inside the engine bay and tape up various 10cm pieces of bright wool around and see what happens..?

Cheap, cheerful and interesting maybe.

I'm about to make a couple of research, not scientific, more or less try and error. First, today, the job was to relocate the MAF sensor and nothing else. You see an original Fomoco part which belongs to a Ford Focus with the same Sigma 1.6 ti engine. I bought this part a year ago because I wanted to replace the MAF sensor. That was a funny experience. The original Ford MAF sensor costs about 220€. The shown rubber/plastic hose ensemble costs ...at least last year ...about 80€....BUT!! the very same MAF sensor was included:, screwed in:) A nice example of modern high tech logistics and calculation...



This is the very first and very unprofessional approach. Here is the experimental stage of today.



During the next days I will replace the cardboard roll by an aluminium tube of appropriate diameter.

For now I can say, the engine gives a much better response to the throttle, and it seems to run leaner. The performance is better at the mid band in higher gears (when she is faster) but I have lost torque at the low rev band. This may be caused by turbulances and connection issues of the to big diameter cardboard roll.

The benefit of the set up is, that I can try different intake solutions instead of the given Ford airbox. Because now the job of the MAF sensor is done at another location. I can fit e.g. an open air filter on a long length tube, a short length tube etc. I must say that the often reported positive experiences using an open airfilter with a short tube length could be more the result of the relocated sensor than of the open air filter by itself. I will keep you updated.