[Healeys] Carburator needle changes

[Bob Haskell]

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