Amal concentric and 16m

Information relating to the Matchless G3 or AJS Model 16 350cc Heavyweight
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Amal concentric and 16m

Postby Angelo » Tue Sep 15, 2020 3:04 pm

Hi - I am thinking of putting a new concentric on my 1947 16m - the current 276 is playing up and no end of fettling is making it tick over so it looks like body wear.

I am thinking about going concentric if something else - any advice and jetting required would be appreciated.

Thanks I advance

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Re: Amal concentric and 16m

Postby spookefoote1956 » Tue Sep 15, 2020 3:47 pm

I'd dump the idea of a concentric and get a monobloc. You'll be forever mucking about with the concentric.

Sorry, pre-mono 76D/1J
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Re: Amal concentric and 16m

Postby cbranni » Wed Sep 16, 2020 6:00 am

Hi Angelo,

Hope you are well, long time no see, if you speak to Amal they could advise you on what size and set up to use.

Kind regards Colin
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Re: Amal concentric and 16m

Postby spookefoote1956 » Wed Sep 16, 2020 8:16 am

cbranni wrote:Hi Angelo,

Hope you are well, long time no see, if you speak to Amal they could advise you on what size and set up to use.

Kind regards Colin


This would of course cost a lot less!
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Re: Amal concentric and 16m

Postby bob » Wed Sep 16, 2020 9:49 am

I put a new concentric on my 1953 M16 , to re place a very worn Carb . Been on now over 2 years with no problems at all . Tickover is smooth , starts first kick ( when there's no public audience ) . Fuel consumption improved

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Re: Amal concentric and 16m

Postby Angelo » Wed Sep 16, 2020 8:53 pm

bob wrote:I put a new concentric on my 1953 M16 , to re place a very worn Carb . Been on now over 2 years with no problems at all . Tickover is smooth , starts first kick ( when there's no public audience ) . Fuel consumption improved


I wonder if you had the spec for the concentric - size and jets?

Thanks

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Re: Amal concentric and 16m

Postby bob » Thu Sep 17, 2020 6:35 am

Hi Angelo

It's a Wassell WW90446 , 26mm Bore , 160 Main , 106 Needle , 3.0 Throttle

Works fine on my 1953 M16

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Re: Amal concentric and 16m

Postby Angelo » Thu Sep 17, 2020 5:33 pm

bob wrote:Hi Angelo

It's a Wassell WW90446 , 26mm Bore , 160 Main , 106 Needle , 3.0 Throttle

Works fine on my 1953 M16

Thanks Bob - I have an old concentric so may rummage and build it up just to see.

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Re: Amal concentric and 16m

Postby Angelo » Thu Sep 17, 2020 5:35 pm

bob wrote:Hi Angelo

It's a Wassell WW90446 , 26mm Bore , 160 Main , 106 Needle , 3.0 Throttle

Works fine on my 1953 M16

Thanks Bob - I have an old concentric so may rummage and build it up just to see.
cbranni wrote:Hi Angelo,

Hope you are well, long time no see, if you speak to Amal they could advise you on what size and set up to use.

Kind regards Colin


Hi Colin - good thanks - be good to catch up again when thing settle down !

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