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+--- Thread: Amal carbs on production A7? (/showthread.php?tid=864)
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Amal carbs on production A7? - Nick Salmon - 27-02-2018
The other evening North Herts Centre of the 750C had a really interesting presentation by Hugh Barnes about the work being done on the A7CA Archives.
In the course of the talk Hugh showed some slides of the Austin record cards that, in period, kept track of the changes made to A7s throughout their production. One of them caught my eye as it mentions 'Amal' carbs. I'd not heard of them being fitted to A7s. Nor had other people in the room. Just for interest, does anyone know more? Note the very late date - November 1939. Did it ever happen?
I trust the A7CA will not mind me showing this image of part of the card:
amal.JPG (Size: 40.72 KB / Downloads: 429)
RE: Amal carbs on production A7? - Stuart Joseph - 27-02-2018
Good afternoon. I recall replying to a similar post on the old site. I'm away at the moment so I can't photograph the relevant page but these carbs are referenced in the original Austin service journals. Perhaps if anyone has a copy they could do it.
Regards from a long way from the Creative county - Staffordshire
Stuart
RE: Amal carbs on production A7? - Mike Costigan - 27-02-2018
That November 1939 date is actually a poorly written 1930 date. I seem to recall reading somewhere that there was a supply problem with the Zenith carbs, and an Amal carb was fitted to random cars for a short period in late 1930.
RE: Amal carbs on production A7? - Steve Jones - 27-02-2018
(27-02-2018, 04:26 PM)Mike Costigan Wrote: That November 1939 date is actually a poorly written 1930 date. I seem to recall reading somewhere that there was a supply problem with the Zenith carbs, and an Amal carb was fitted to random cars for a short period in late 1930.
See Appendix 3 to Wyatt. That shows Amals in November 1930 to cars "B2-6158, B2-6315, B2-6366 etc". Also, pages 119 and 120 of abstracts from 'The Austin Service Journal'.
Steve
RE: Amal carbs on production A7? - Ruairidh Dunford - 27-02-2018
RE: Amal carbs on production A7? - Colin Swinbourne - 27-02-2018
I have one of these carbs. It’s been rather cannibalised as many of the jets etc fit the side draft version that is used on my Rover 10/25
I would be interested to see any additional pages of the above as they are a pain to get the transition from bypass to main jets right...these instructions look to be far more useful than the Amal ones!
RE: Amal carbs on production A7? - Ian Williams - 27-02-2018
Purely out of curiosity has anyone first hand experience of using the Amal in comparison with the Zenith, was it a better carburettor that was more expensive so not generally used, or was it an inferior substitute. Academic question maybe but I would be interested to know.
RE: Amal carbs on production A7? - Tony Press - 27-02-2018
(27-02-2018, 09:39 PM)Ian Williams Wrote: Purely out of curiosity has anyone first hand experience of using the Amal in comparison with the Zenith, was it a better carburettor that was more expensive so not generally used, or was it an inferior substitute. Academic question maybe but I would be interested to know.
Wasn't it around the time Zenith went from bronze to die-cast ? Possibly a hitch in production caused the quick substitution - either more expensive or not as good ?
I haven't seen an Amal up-draught here so can't help on performance.
Cheers, Tony.
RE: Amal carbs on production A7? - Hedd_Jones - 28-02-2018
looks like they may have been cast iron
https://www.ebay.co.uk/itm/AMAL-Updraft-Carburetor-Vintage-Car-Motorbike-Pump-Engine-Tractor-Autojumble-/112823259111?hash=item1a44ca4fe7%3Ag%3ANTgAAOSw8btZe4Ys&nma=true&si=KTIRAGc39CYEa%252F8uUDEfy1gfo%252B0%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557
RE: Amal carbs on production A7? - Hugh Barnes - 28-02-2018
Just for the purposes of Academic study, might someone buy this and fit it to a car for research purposes? Sadly, I don't have the right car (*great excuse)...
Hugh