[Healeys] Carburator needle changes

[Jerry Costanzo]

Ken Freeze put his car on a dyno and tested.  I think that is the best way, 
but it is nice to get close first.  I would love to have a fuel-air meter. 
Anyone want to donate?

Jerry


> Jerry,
>
> Jerry,
>
> One approach I'm wondering about is to use a fuel-air meter and oxygen 
> sensor(s) in the exhaust pipe(s).  See 
> http://www.team.net/www/morgan/tech/carbs/tuning.html
>
> Anyone done this on their Healey?
>
> Bob
>
> Jerry Costanzo wrote:
>> I have installed my HD8 carburetors onto a slightly modified BJ8 engine. 
>> The
>> carburetors were rebuilt (by me).  At present, the engine runs well but 
>> the
>> carburetors have a little backfire when cold and occasionally when warm. 
>> They
>> test by lifting the piston to be too lean.  If I adjust the fuel mixture 
>> any
>> richer, the idle goes over 1100rpms and I still don't get the lift test 
>> to
>> properly keep the rpms steady.
>> Other items of note:
>>
>> Checked for vacume leaks.  Did not find any with a unlit propane torch.
>> Timing appears to be correct.  I went back and checked the valve 
>> positions vs.
>> cylinders at top.
>> Engine revs ok,  I have not driven the car to test the power.  It does 
>> not
>> have body panels on yet.
>>
>> Is it time to try a richer needle in the carburetor?   If so, which would 
>> you
>> try?
>>
>> Jerry
>> BJ8  in progress
>> BN4