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The BSA A7 & A10 Forum > Technical > Amal & Carburation > carb jet sizes?
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Author Topic: carb jet sizes?  (Read 1495 times)
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emilios
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« on: 07.10. 2009 21:16 »
Hi
Can someone tell me the correct carb jet sizes for my A10 iron head with +40 pistons?
I use a monoblog carb.
Thanks
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1956 BSA A10 Plunger
1954 BSA B31 Goldstar Replica
1970 Honda cb750K0 project
dpaddock
NC, USA
A-Clairvoyant
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« Reply #1 on: 08.10. 2009 03:58 »
Your 1953 Flash (iron head) was fitted with a 1-1/16" type 276 Amal, not the Monobloc.

Please advise us the type and size of the Monobloc you have.

David
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David
'57 Spitfire
emilios
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« Reply #2 on: 08.10. 2009 17:14 »
I know that was fitted with 276 but when i bought bike was fitted with monobloc..
How can i unterstand what type and size is?
im little lost on carbs.
Please help
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1956 BSA A10 Plunger
1954 BSA B31 Goldstar Replica
1970 Honda cb750K0 project
emilios
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« Reply #3 on: 08.10. 2009 18:50 »
i checked and my monobloc is 1 1/16 bore and has 106 main jet and 25 slow.
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1956 BSA A10 Plunger
1954 BSA B31 Goldstar Replica
1970 Honda cb750K0 project
dpaddock
NC, USA
A-Clairvoyant
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Karma: 5
Posts: 430
« Reply #4 on: 09.10. 2009 00:13 »
OK, emillios.

On the top of the carb flange is a number e.g., 389/71. It's the first number that is important.
Please post that number and we can advise more fully.

David
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David
'57 Spitfire
emilios
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« Reply #5 on: 09.10. 2009 20:48 »
on the top of my carb is number 376/ 3 1/2
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1956 BSA A10 Plunger
1954 BSA B31 Goldstar Replica
1970 Honda cb750K0 project
a10gf
West Coast, Norway
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« Reply #6 on: 10.10. 2009 11:12 »
Hi, Bacon's Twin Restoration lists 240 main, 25 pilot, needle .1065 clip pos. 3.
The 376 in good condition will be fine on your bike. 1 1/16 is correct size.
 
Maybe contact amal for questions and parts.
And get a few books if you do not have them. Good luck.

e
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A10 GF '53, Triumph 900 Legend, Yamaha XT500
Norway - Bergen
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