13-03-2024, 09:59 PM
GG or AN needle are the two I have used with success, though I have a 1" OM fitted, so a slightly different carb. There are other things that would affect performance, of course (though I hardly dare suggest that to you, Dave) but is timing right and, most importantly, does the throttle open to its fullest extent? The late, great Ray Walker would always do such a test. Standing by an open bonnet, he would ask the driver to put their foot on the accelerator as far as it woud go, then he would grab the throttle on the carb and see if it had any more travel.. Though I am sure you have thought of such thkngs...