Hi just saw a good clean example of air box for long weber manifold on davem's thread viewtopic.php?f=2&t=87955

and wondered, does anyone make them as a unit.... or have plans already made...
i know i can just use the CAMS info and make up a cardboard box pattern to start, but i was struck at how tidy the one in the photo looked
Cheers Darryl

it does look very tidy im also keen on this information.

contact greg at mini classic, he has a guy who does his fab work, very nice quality, not to expensive either. Very excited today i should be picking up a order for the clubbie at DHL from KAD and carbon weezel this arvo, if all goes to plan!

_________________
SPO41 Mk2 Cooper S very original
1993 R32 Nissan Skyline GTR

light and shiny stuff... the clubbie will love you for it..... when is the phillip island oil squirter due back in action? thanks for the info re mini classic

Hey Darryl,

On a previous car for my Weber box, I just used a battery box from a boot section and modified it. It's a bit ghetto, but worked fine. I'll see if I can find some photos.

For my current car I'm pretty sure I bought a prefabbed weber box, but buggered if I know where from. Probably from eBay, I found this one but I'm sure I didn't pay that much... On the upside, it has the dimensions in the advert

http://www.ebay.co.uk/itm/Mini-Weber-Bu ... 20f18ab420

Cheers,
Keels.

_________________
-Wasabi
1972 Clubman - Daily Driver
1962 850 - EW1 Powered

thanks keels, it is v big

If fitting a Weber box, don't make it too small.
One member here got one put in, and it cleared the short K&N Weber filter OK. But, this filter didn't flow enough air for the motor (with 120HP at the crank). He didn't want a Ramflo on there, so he was stuck with using 2x Unifilter socks.

[edit] manifold was an RE5".

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

The cams group nb measurements look pretty small

Details of the CAMS approved Group N Weber box are posted below.
Note that the proposal was was based on safety concerns, not performance enhancement, so it had to be as small as was practical. I doubt that the proposal would have been accepted if there was an obvious or perceived performance advantage.

This is all that needs to be cut out:






PROPOSAL TO ALLOW THE INSTALLATION OF A CARBURETTOR BOX ON GROUP N MINIS
Background
The Mini body has an opening in the engine bay firewall behind the instrument cluster. This opening has no restriction to the entry of fluid or fumes to the interior of the car from the engine bay. The Mini instruments ( speedo, fuel gauge and oil pressure gauge ) are mounted to the instrument housing and there is a plastic cover that covers the area behind the instrument panel to the firewall. This plastic cover is all that separates the engine bay to the car interior
When a Mini is modified for competition by the addition of a Weber carburettor, the intake tubes of the carburettor can intrude through this hole into the car’s interior. The Weber carburettor’s fuel intake pipe is also at the edge of this opening.
This area has been of concern to Mini competitors due to possibility of fuel and fumes entering the car’s interior. The problem has been to how to seal off this area and not infringe the Group N regulations.
Long time Mini competitor, Ted Brewster, has designed a carburettor box that will seal off the engine bay to the interior with minimum of modification to the firewall.
Proposal
This proposal is to allow the modification of the engine firewall and allow the moving of the instrument cluster to permit the installation of this carburettor box.
The proposed box would be attached to the firewall by an integral flange on the engine side of the firewall and have the maximum front opening dimensions of 175mm high x 215mm wide measured at the face of the firewall. These dimensions only require a minimum amount of modification to the original firewall opening. The depth of the box would not be specified, however there would be a limit to the modifications to the car’s dashboard to retain the original appearance.
WHEN INSTALLED THE BOX MUST BE SELF DRAINING AWAY FROM THE CABIN COMPARTMENT INTERIOR.
The speedometer (including the original face, speed needle, trip meter, fuel gauge, glass and bezel), temperature gauge and oil pressure gauge must appear original and be retained in the original instrument housing. The instrument panel may be moved toward the interior of the car to a point where the speedometer bezel is in line with front of the top of the dashboard and the front of the parcel shelf. Refer photographs.
The freedom to install this carburettor box could be included in the Specification Sheets of the Group NB and NC Mini.
Conclusion
The box proposed provides a safe fluid and fumes firewall between the engine bay and the car interior. It does not detract from the visible originality of the car’s engine bay or interior. The box provides no performance advantage. The front opening dimensions would not provide a much greater area for the installation of cold air tubes than is currently available with the standard opening.
The compliance of the box can be easily checked with the maximum opening prescribed and the checking of the instrument panel and its placement.

_________________
Curly
'64 Cooper 'S' (Group Nb spec)
'67 Mini Marcos GT www.mm7056.wordpress.com

Thanks curly, that is good to see the actual proposal. Interesting, that the focus needed to be safety. Do you have info around other single make approvals, that seem to give an advantage against other makes? Eg mustang brakes .. For single make races it doesn't matter as they all have access to the same rule set. Interesting ta

It's impossible to keep up with the changes that are constantly occurring in Group N regulations. Each make and model have their own active pressure group looking to find an edge on the opposition. This type of politicing was one of the factors that eventually turned me away from Grp N racing

_________________
Curly
'64 Cooper 'S' (Group Nb spec)
'67 Mini Marcos GT www.mm7056.wordpress.com