hey guys i am trying to lern abit more about webbers and would like to no a few questions the first one is
1 what sizes do webbers come in for mini
2 what is a good size webber for 1100 standard
3 what is a good size webber for 998 standard
4 i have herd they are noisy is it really really noisy or not that bad ?
thanks guys

sidedraft webers (which I will assume you mean) are designated DCOE, then the size of the barrels (that's probably not the correct term for webers). Hence they can go 40DCOE, 42mm, 45, 48, and 50mm.

42,48, and 50 arguably aren't as common as 40 and 45 in the mini area. Any of those webers will fit a mini, but it is a question of which is more suited. The bigger the carb on the smaller the engine, the more the carbie has to be "Choked" down in the chokes, and jets.

Typically, I would say 40DCOE are better suited to small bore, and 45mm to 1275cc and above, but a 45mm can be made to work on both. It really depends on what you use the car for and why you want the weber (ie daily driver versus competition car etc).

They are much noisier due to the induction "roar". It can be both quite intoxicating and annoying depending on how long your journey is and how enjoyable the drive is being. Whilst I have had webers on almost all of my cars over the years, I am questioning going to a HIF44 or similar myself which are quieter and can be made to produce similar power. It must be a sign of of old age.

Edit - I would also recommend you talk to a mini expert like Greig Malure at Mini classic, mini King or any of the others as if you stick a weber on a bog std 998 or 1100 you'll most likely just have more noise, no extra power and have a pig of a car to drive in traffic. The specs of the motor (head, cam, exhaust etc) will play a big part. I assume you know you can't easily use the existing exhaust manifold with a weber as it is integral with the inlet manifold - they can be cut, but more suited with extractors.
KB

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The two general sizes for webers for minis is 40DCOE and 45DCOE. The
40 DCOE is suitable for 1100, but it would be stretching it for a 998 I think. The
45 DCOE is more suited to 1275 and up. I had a 40DCOE on a 1100 and it was
just too noisy and a dog to start expecially when cold. A HIFF 44 single su is
the best option in my opinion. I have heard people suggesting Dellortos but I
have no experience with these.

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Morgs

Whatever applies to webers translates to dellorto's pretty much. Parts are not interchangeable, but otherwise they are very similar in design and appearance and can be better in some instances. They are also cheaper to purchase on the s/h market.
KB

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For a standard 998 or 1100 best you stick with the good ol' 1.5 su on a water heated manifold.
Personally webers are best suited to the race track where as su's are more road friendly even on a hot road motor.

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http://www.youtube.com/watch?v=nDMkVq1jRGU

What's your goal - to squeeze performance out of your 998/1100, sound/looks?

The guys are right, a 40 or 42 suits most 1100's, 45 is a good match for any 1275.

Having said that I ran a 45 on my worked 1100 engine for over a year.
Sounded great but used a bit more petrol than a 1.5" SU. Now i'm back to the SU and I don't know if there's much performance difference, at least not on the road.

Revision model no. 13 is the one most racers choose. Can't remember why.

Within the weber there are other things to configure which change the performance,
namely the jets and the chokes eg. you can tune it from a worked 1100cc to a full-race 1275cc engine with the same carbie, just by changing the internals.

See http://joltfreak.tripod.com/id28.html for a good intro / tutorial.
Also http://www.teglerizer.com/dcoe/rasorcom.htm is good.

I wouldn't bother with a weber on a 998 unless it's a full race donk.

To get max. performance off a weber on a race mini you need to cut into the firewall and use a long manifold (5" or greater).
For road purposes, a 3.5" redline manifold or similiar will work well and doesn't require cutting if you choose a slim air filter.

BTW: It's weber (correct pronunciation - 'weaver') not web-ber, but I say the same all the time

If it's performance you want, a cam will give you more bang for buck. on a 1098, you're really still stretching it putting on a webber, ESP without good extractors.

I had a hot 1100 with a very mild road cam, and a well ported head running a 45 webber (admittedly too large). Performance was still not as good as if I had just thrown in a big cam and say twin SUs. (or better still, big cam and a 40mm webber similar to MiniMad's previous setup

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Lillee - 1969 Morris Mini K

I like Dellorto DHLAs better than Weber DCOEs for road use.
They are cheaper to buy s/h, don't leak fuel through the starting circuit like old Webers do, have a bigger range of jets, and I find are easier to get right. Also they work fine on a Mini without a soft mount kit.
They look, sound and GO the same as a Weber. Mountings are the same too.

People will tell you Dellorto parts are hard to get- I can get anything I like from UK to here in a week, from www.dellorto.co.uk
And prices are good too.

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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.

Thanks smiling simon, have just bought a cooper with a weber and had no info at all on it. i don't even know what is under the head yet. The joy of discovery. the teglerizer site is great.

Brian

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"Investing my Super in a Cooper" &
"Re-living my Surfing Past in a Woody"