BSA A-7 & A-10 Dual Port Heads/Manifolds
& Single Port Heads
David Comeau 2 Dec 2001
revised 25Feb 2007
Please note-I have used the casting p.n. and not the BSA assigned assembly
BSA factory dual manifolds, 67L1330 (SP 92501), 67R1331 (SP
92502) 1 5/8" tall
These are extremely rare. Even moreso than the heads. At a fleamarket/autojumble
the dual port heads usage could easily be picked out as an A-7or A-10.
The manifolds however, sitting alone in a box on the table, are MUCH more
difficult to detect, except by the most highly educated BSA enthusiast.
How many of these got "tossed" because their use was not readily apparent?
My design of billet aluminum manifolds. also 1-5/8" tall.
These are still currently available at my ... parts
BSA factory A-7 and A-10 single manifold