[Healeys] HS4 needles (tri-carbs)
Bob Haskell
rchaskell at earthlink.net
Mon May 9 20:34:30 MDT 2022
I found an inconsistency in the BT7/BN7 parts lists for the carburetter
needles fitted to the tri-carbs (HS4s). The 4th and 5th editions have
the standard/rich needles swapped.
Part Number
AKD 1151 4th edition
AKD 1151 5th edition
AUD1127
Needle - standard (DJ)
Needle - rich (DJ)
AUD1128
Needle - rich (DK)
Needle - standard (DK)
AUD1126
Needle - lean (DH)
Needle - lean (DH)
Other references that match the 4th edition:
* Tuning S.U. Carburetters, by Speed Sport Motobooks - July 1970.
* SU Carburetters, by Interauto, 1972.
* Burlen's web catalog
<https://sucarb.co.uk/carbspec/carburettor/essentials/id/395/>
Other references that match the 5th edition:
* AKD 5036 issue 3, Carburetter Service Parts List, page SJ8
If the needle charts in the Speed Sport Motobooks and Interauto books
are to be believed, then the info in the 4th edition is correct.
Cheers,
Bob Haskell
Austin Healey 3000 BN7/BT7 registrar
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