anyone know what an SU carb AUD82 is off of?

thanks

I thought all the AUD numbers were 3 numbers, not 2....how big is the throat? 1-1/2?

i have been looking Here http://www.sucarb.co.uk/ProductSearch.aspx

no 82 tho. It appears that some have a two digit number...how about a pic of the tag?


mark

OK so I'm an idiot - it's an AUC 82 - here are some pics

Oh, and Tony, the throat is 1 1/4" (HS2 right?)

carb with manifold

and throat one

and two

and number

and manifold

(BTW I have a number of these so they aren't all the same carb)

AUC.......hmmmmmm.....just from looking at them, they look like the carbs on my '63 Midget but I think all our MG's were AUD's.....& I've never seen manifolds like that before either.....were they used in single carb setup or dual carbs? Almost looks like single carb....

I keep thinking motorcycle or something. Either it is a single or it bolts to another manifold piece. The guy I got these from is into microcars but even there I can't think of a single cylinder with an SU - though maybe a 2 cylinder with 2?

The AUD 13 carburetor assembly used a AUC 82 body I believe. It almost looks like the manifold was used to adapt it for down draft flow, maybe in a A40 Devon or similar. Ask Nial (aeronca65t) he knows A40's.

No the '50s Austins (A40s, A30s, A35s, etc) used Zenith (downdraft) carbs.

I'm puzzling over this too. Morris Minors used SUs on their OHV (Austin-based) engine but I'm not sure about the 1-1/4" size. I would have guessed that the Minors used the older 1-1/8" carb (like a Bugeye).

[edit]

Here's a single carb Minor manifold below:

I spent some time scouring an SU reference catalogue. I could not find a reference to an "AUC 82", AUC carbs with only a two digit numeric suffix were fairly rare in this catalogue. I did find some that were close though.

AUC 81
HV2 type carb
1930 Wolseley Hornet
12hp Hornet 6-Cyl

AUC 282
HV2 type carb
1935 Singer
9hp Sports 4cyl

AUC 824
H4 type carb
1956 ZA/ZB Magnette

AUC 825
H2 type carb
1958 Hillman Minx
Derrington 4cyl.

Also found one reference to a English Ford Conversion set.

AUC 820
H2 type carb
1955-57 Ford Zephyr
W.H.M.B. Ltd, 6cyl
2262cc engine
This set used three carbs so there is reference to an AUC 820F, AUC 820C, AUC 820R

Well, I went through my SU reference book that covers every SU in use from 1960 onwards & there's no AUC 82....so, it must be an earlier vintage,

But, I did find AUD's with only 2 numbers, something new to me.

The oldest vehicles that my catalogue references are as follows.

1929 Lagonda 14hp 4-cyl (AUC2)

1929 Lea-Francis 12/40hp Supercharged 4cyl (AUC8)

1929 M.G. "M" type 4cyl (AUC59)

So I guess it covers from 1929 forward.

That's a reasonably modern SU - mid-fifties or later - so precludes a pre-war vehicle. Pre-war SUs had solid (banjo-style) mounted float chambers.
The manifold (or adapter) in the first photo is clearly for downdraft application, adn try as I might I can't think of a production vehicle that had SUs as standard with a downdraft manifold. It would pretty much have to be a "Nuffield - BMC" mass-produced car, or else a low-production car, like Morgan, or maybe a Coventry-Climax or similar engined one.

So that leaves special adaptation, tuning or what-have-you, like the Minx and Zephyr tuning kits referred to above. I know VW Derrington were fond of SU adaptations, though they were also Weber agents.

Short answer - I don't know!

John-Peter:

Could you share with us the Letters and/or numbers on the metering needle? Perhaps we could "back in" to the prior use if we had that info.

Jerry

Good idea - but of course the plot thickens. here is what I found:

On the Float chamber it says AUC 1390 with PDC10 below it

On the Float chamber lid of two, there were tags. As near as I can tell (they are worn)

one says: FZX 1253
the other says: FZ 1351 10WK 744

I took 5 needles out and 4 were different. They were

AAC
AAT (two of them)
BCW
and EB - the only solid (no spring) needle.

I have no idea if this helps

The numbers on the tags are the carb model numbers. The other numbers are the individual component part numbers. The 3 letter needles are self centering indicating a "newer" carb.

Are you sure there isn't an X in the second model number. If there is they look like they may have come off of Reliant Robins.

Good catch! I forgot Reliant. Sometime in the 70s they replaced the Zenith with an SU and that may well have sat on a D/D manifold.