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

Thanks for so many suggestions. One should try them all:) Hannes how much is your kit round about? It looks very good machined. But Garret's solution also seems to work fine, providing a good air stream.

Dear Heinz. I bought the same intakesystem 2014 at Scotland. The effect is impressive - in my opinion. A bit more tourque and nice sound 😀. I'm happy with this solution.

Producer and Dealer was Rapide Engineering (Scotland) Ltd, Cowgask Steading, Trinity Gask, Auchterarde. I had contact with Philip Hogg there.

I can confirm that it´s sold via the dealer in Perth. But I´m not sure if it also fits on RHD cars - but could/should fit when I read Christians last post. He seems to have a LHD car.

Some time ago I was looking for a better solution than the serial radiator because of the "quite usual" risk of a break of the plastic tap (with all the possible consequences when you don´t realise it immediately, e.g. on a fast Autobahn ride)
The MOG workshop I trust in Germany developed last year a conversion combining an aluminium radiator with another air intake tube and air filter (not cheap but they are real maniacs about high quality work and solutions).
I plan to do this conversion on my Sigma engined 4/4 Sport presumably in 2017 (quite a lot of other projets this year to optimise other cars of the fleet ).
If you would like a more detailed exchange about that, please feel free to PM me (during the week I´m usually in Cologne, so perhaps we could meet to chat a bit).

Kind regards,


George

Thanks, Christian and George. On George's car you can see the LHD steering colomn behind the filter box. Quite impressive and different solutions from all posters. One question, those who use the Rapide Engineering product, do you experience a difference regarding performance and/or sound level if you perhaps have driven your car with and without filter cover in comparison?

Heinz: Sent you a PM

Hi Heinz, The K&N kit (c. €100) bolts directly on to the engine and includes an extended breather hose. I bought the kit on eBay from the UK. It does not hit the bonnet and gets good surface exposure to the cold air coming in from the louvres. I ran a cold air pipe to the font of the car (with advice from Cain) to ensure additional cold air feed but I found that the filter position alone (without additional cold air pipe) functioned very well with no issues. I enclose a picture of the front air dam/scoop (thanks again to Cain) connected to a cold air pipe running up to the K&N filter.

Hi Heinz,

A few more pictures. The last one was the original cold air tube mouth under the car, before the air dam/scoop was added. Rgds G

Garret, thanks for the insightful pictures.

Any exposed under bonnet filter is not going to get much cool air. On my system with the throttle bodies the air temperature sensor is in the back plate of the filter. With the logging software I can monitor the intake air temperature. Even on cool days it rises to over 40°C and on hot days to over 50°C. Given that it is drawing at least a percentage of its air from the louvres and that the rest is passing the radiator it is clear that there is little benefit to be gained without an enclosed air intake or perhaps a bonnet scoop.

I agree......
The surface temp of my filter enclosure reaches 40C and above simply from underbonnet air at normal average driving. It is polished stainless and high up at the rear of the engine. Hotter during faster runs.Only an enclosed or protected air supply can efficiently guarantee lower temp air. So, a cold air feed from somewhere without gaps and suitable insulation is the best. The exposed cone filters would probably give optimum airflow but that air will not be cool. The modified airboxes would help control the air.
To my thinking the best solution is sealed air supply from a good source known to enable cool air intake. Maximising venting of hot air out from the engine bay is also beneficial, so bonnet catch extenders, air dams etc are options. If I remember correctly didn't Frankie have raised bonnet catches as well leaving a gap just in front of the windscreen? Chunky.....can you confirm?
Garret, your setup with a cold air scoop looks decent, I am not fully convinced that the side louvres allow much air IN but probably aid venting.