Does the HD8th indicate a thermostatic choke?
Bill Lawrence
On 5/1/05 7:18 AM, "Rick Neville" <healeyrick@yahoo.com> wrote:
> Scott,
>
> My Haynes SU Carb manual shows the AUD 157C bowl tags
> match HD8 carbs fitted to the MK X Jaguar in 1964 or
> the Jaguar 420 in 1967-8.
> The AUD 157F tag is listed as an HD8Th fitted to the
> same cars.
> Hope this helps,
>
> Rick
>
> --- "scott@scottjgraham.com" <scott@scottjgraham.com>
> wrote:
>> Hi listers - need some help on my Healey BJ7
>> carbies.
>>
>> The car was converted to a triple SU set-up (I was
>> told by the shop they are 2" and have assumed they
>> are the HD8's used for Healey BJ8's).
>>
>> The carbies have been overhauled by a reputable
>> local shop but they were unable to adjust them to
>> idle correctly. The carbies only have one adjusting
>> screw & the shop has adjusted them to the max but
>> the highest idle speed possible was 300RPM at which
>> they constantly stall.
>>
>> I have used my pedal stop to bring the idle up - but
>> this is far from ideal.
>>
>> When looking at the carbies, they do not match the
>> illustrations in my SU manual for either HS or HD
>> type carbies. Neither can I find the carbie serial
>> numbers there or on the internet. The carbies lack
>> (by design):
>> - Fast idle adjusting screw
>> - Throttle adjusting screw
>> - Jet adjusting scew
>> Instead, they only have a screw in the location
>> marked in the book as a "Slow running" volume screw.
>> I was told by someone else that these may have been
>> later emissions compliant SU's.
>>
>> Can you please help me identify these carbies. The
>> numbers on the units are:
>>
>> - Front: carby body - 709c; bowl tag - AUD 157c;
>> junction with manifold - C 13 6.
>> - Middle: carby body - 709c; bowl tag - AUD 157f;
>> junction with manifold - C 13
>> - Rear: carby body - 2044 (IGN); bowl tag - AUD
>> 157c; junction with manifold - C 9 6.
>>
>> Thanks
>>
>> Scott J Graham
>> 62 BJ7
>> 60 Bugeye
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