Description
Amal carburetters were at the heart of the British motorcycle industry being fitted to bikes from the 1920's right through unitl the late 1980's. Our carburetters continue to be the go to choice for enthusiasts who want to restore their bikes to original condition as well as for those building custom bikes. At Burlen Ltd we manufacture a wide range of Amal caburetter models suitable for both road and racing applications to help you breathe new life into your motorcycle.
Amal-minium Carburetors a brief history
In 1927 3 carburetor or carburettor manufactures in the Midlands: Binks Brown, Barlow and Amac joined to launch the company Amalgamated Carburettors Ltd. All British made motorcycles and some other European brands began using the Amal carburettor.
Surviving many transfers of ownership the company still exists and supplies a product that has changed little since its inception. In the past decade considerable improvements have been applied to the motorcycle range.
Moving away from brass very early in production all Amal carburetors were being supplied in Mazac Aka Zamak or pot metal. This is an amalgamated metal composed of: zinc, and other base elements that melt and cast at a lower temperature (700F) compared to brass or aluminium (1700F, 1400F).
In the mid 2000's the Premier Concentric carb was introduced. This featured an aluminum slide among other new features, which are detailed below. Just this year the decision was to phase out the zinc body and begin supply of carburetors constructed entirely out of aluminium.
Moving to aluminium construction has several advantages:
Weight savings (nearly a pound has been shaved off), improved wear characteristics that the aluminium slides had not fully addressed, and lower tooling costs (allowing for more consistent supply and lowering initial production costs).
What is the advantage of a Premier Carb over a standard MK1 Concentric?
The 600 & 900 series MKI Concentric carburettors has been re-designed to improve performance and wear. The new carburettor incorporates changes in materials which reduces the rate of slide and body wear and a precision engineered idle circuit. This improves the pick-up performance from idle and reduces fuel consumption. The precision manufactured forged alloy, Hard Anodised Throttle Slide has a low friction surface for smoother operation and greater wear resistance. The ethanol resistant, puncture proof StayUp® Float and Viton tipped alloy Needle Valve improve control of the fuel flow. A new easily removable Pilot Jet provides precise metering of the idle circuit. The Jet, which is located in the opposite position to the Pilot Air Screw, is manufactured to tight tolerances allowing it to be replaced with minimum disruption to the adjustment of the carburetter. Initially the size of the jet replicates the 622/107 Pilot Bush. Removal of the Jet allows access to the rest of the idle circuit for servicing.
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