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
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