Carbon Airbox Cylinder Kit for Cone filters?!
Discussion
Ok guys, after spending a lot of time and money on various things for my cerb, i am looking to get an attachment for the airbox to house the cone filters. I have looked at the filters supplied by joospeed and will be looking at a housing to utilise these and link to the original filter housing at the front.
There have been lots of comments on this and it seems it is a bonus to do this.
Two things:
1) Would there be much interest from everyone for this in a kit form?
2) What should i include or consider in its design??
It will probably be in carbon for strength and weight. All comments will be taken on board here guys!!!
Cheers
There have been lots of comments on this and it seems it is a bonus to do this.
Two things:
1) Would there be much interest from everyone for this in a kit form?
2) What should i include or consider in its design??
It will probably be in carbon for strength and weight. All comments will be taken on board here guys!!!
Cheers
carbon al has done filter housings for his car, not seen any production models tho yet.
the filters in the engine bay isn't as flawed as you might think .. the std airboxes soak up the exhaust heat and the airflow isn't enough to keep the air cool unless you're at approaching full airflow .. with teh green filters you get airflow over them at speed anyway .. yuo don't need full HP in a traffic jam so there's not much in it ..
the filters in the engine bay isn't as flawed as you might think .. the std airboxes soak up the exhaust heat and the airflow isn't enough to keep the air cool unless you're at approaching full airflow .. with teh green filters you get airflow over them at speed anyway .. yuo don't need full HP in a traffic jam so there's not much in it ..
jasonben said:
kojak69 said:
I dont think they need a housing, at least for the 4.2. Not sure about the 4.5.
The housing is to keep the hot air developed from the engine away from the intake and let the nice cool air in from the front of the vehicle, as the original design!
Where have I seen a photo showing a 4.2, with the cones on, but no housing.( I can only assume it was done for the photo ). Always wondered about that.
>> Edited by kojak69 on Wednesday 3rd November 20:55
jasonben said:
Two things:
1) Would there be much interest from everyone for this in a kit form?
2) What should i include or consider in its design??
It will probably be in carbon for strength and weight. All comments will be taken on board here guys!!!
Cheers
I'd like a set at some point, so if you do set anything up, let us know.
jasonben said:
Two things:
1) Would there be much interest from everyone for this in a kit form?
2) What should i include or consider in its design??
It will probably be in carbon for strength and weight. All comments will be taken on board here guys!!!
Cheers
I'd be interested, providing the cost is sensible, i.e less than a new short engine
Has anybody got access to a flowbench, or something, so that some consideration can be given as to how the airflow behaves at high subsonic speeds?
jasonben said:
Yes, they will be very similar to those boxes. Two section design for ease of cleaning/replacing the filters.
We can more or less do what we want with them so the more input we get on here the better!
These unscrew from either end for ease of cleaning too.
They also incorporate the vortex system internally to allow the air to flow better.
jasonben said:
We can more or less do what we want with them so the more input we get on here the better!
How about a new front box that accomodates a readily available existing size of K&N or Green flatpanel (or 2 small ones) - but utilises the entire filtration area (unlike the normal foam panel)?
F1 technique - inside knowledge:
Catch the air - pressurise it and make it speed up by vortex flow structure - and then send it through the filter - if you catch it at the filter first - you dont get the benefit of RAMming it in - which means more air in the same space - like a free supercharger albeit tiny - but you'll notice the throttle response and fuel getting burnt better too...
Joo can do this for you, and its a real world mod which you will feel the difference when you hit the road....
But JB, when you get those boxes made - remember - there isnt really much in it - theres a lot more I would recommend.... it looks nice and smooths things out in mid to top end - but otherwise <40mph is still the same.... if anything, might be more restrictive than one simple panel filter at low speeds....
Catch the air - pressurise it and make it speed up by vortex flow structure - and then send it through the filter - if you catch it at the filter first - you dont get the benefit of RAMming it in - which means more air in the same space - like a free supercharger albeit tiny - but you'll notice the throttle response and fuel getting burnt better too...
Joo can do this for you, and its a real world mod which you will feel the difference when you hit the road....
But JB, when you get those boxes made - remember - there isnt really much in it - theres a lot more I would recommend.... it looks nice and smooths things out in mid to top end - but otherwise <40mph is still the same.... if anything, might be more restrictive than one simple panel filter at low speeds....
[quote=SXS ]F1 technique[/quote]
Can you quantify the gains? It is pretty hard to get the air pressure higher than the stagnation pressure i.e. static ambiant plus ram. Ram air pressure is pretty negligeable at the sort of speeds we do. For example at 50 mph you get less than 0.0025 bar, that is a quarter of 1%, I think this is what engineers refer to as 'bugger all'. Even at 250 mph you get less than 0.07 bar of ram pressure. This might be relevant if you're doing 200 mph in an F1 car and are after every fraction of a bhp you can get, but I don't think its a useful effect for a road car. Getting cold air on the other hand, rather than hot, makes a huge difference. In rough terms, 1C drop in air intake temperature is worth about 1 bhp gain.
Can you quantify the gains? It is pretty hard to get the air pressure higher than the stagnation pressure i.e. static ambiant plus ram. Ram air pressure is pretty negligeable at the sort of speeds we do. For example at 50 mph you get less than 0.0025 bar, that is a quarter of 1%, I think this is what engineers refer to as 'bugger all'. Even at 250 mph you get less than 0.07 bar of ram pressure. This might be relevant if you're doing 200 mph in an F1 car and are after every fraction of a bhp you can get, but I don't think its a useful effect for a road car. Getting cold air on the other hand, rather than hot, makes a huge difference. In rough terms, 1C drop in air intake temperature is worth about 1 bhp gain.
joospeed said:
These are already in production, I have a pair of beautiful cone filter covers sat in my office, quite stunning quality
Cool..put me down for some, pretty please.
BTW, which fuse handles the reverse light, and where is the sender on the G.box?
Hope the weather holds for the weekend..or alternatively that we get good "sideways" snow
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