Lew,
When I had my two J2s 50 years ago in England with low octane and slow
burning petrol the reco'd ignition setting was 20 degrees BTDC which
gave 40 degrees BTDC at speed. They went very well, without your
problems.
I think you shd try setting at about 15 degrees BTDC instead of at TDC
Cheers .... Pat
Lew Palmer wrote:
>
> This is your faithful servant with another stumper:
>
> The J2 Im working was never intended to have any engine work done on
> it, but so much for best intentions. When the car is started, it runs a
> bit rough without the choke pulled on (of course). But as it warms up,
> the carbs (mostly the rear one, but also the front to a lesser degree)
> regularly spits fuel. Mostly a fine mist, but clearly more than it
> should. Compression is between 85 95 lbs. Valve clearance is as close
> as I can get it to the recommended .006. Carbs were rebuilt by one of
> the best in the business (Jim Taylor of Oklahoma), and the float level
> is set so that the fuel level is about 1/8 below the level of the jets
> (about = as measured at the float levers.
>
> The engine runs OK when it is not spitting, but starts missing when the
> spitting starts. Spark appears strong, ignition is set so that points
> are just opening when at TDC on #1, advance appears about 20 degrees on
> the flywheel.
>
> Anyone have any ideas what is going on?
>
> Regards,
>
> Lew Palmer
>
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