|
The KD is the richest standard needle, on the whole it safer to start with too rich than too lean.
It is a fair assuption that if the car starts readily from cold without choke your base settings are too rich. Have you tried using the lifting pins on the carbs to gauge your settings. hen the carb is tuned right if you lift the piston with the pin the revs should rise momentarily and then drop. The engine should keep running at a slower idle. If the engine stalls richen up the carb opposite to the one you're lifting the piston on. If the idle doesn't drop lean the carb off. You always adjust the opposite carb to the ne on which you're using the lift pin.
The settings shouldn't vary drastically between the two carbs, if you end up with a final adjustment that differs by more than a few flats you have another problem.
Check whether your float level isn't too high. If you've moved to the later nylon floats without the metal arm you need the matching float bowl lid.
It should give reasonable fuel consumption with an ignition setting of 10 degress BTDC. By going to more you can get a better idle on a hot cam, a D should idle pretty nice though. The problem with going too far is that at idle you only get partial cylinder filling. If you boot the engine from rest you will get detonation, and you can't hear it. Ideally you need to check the full total advance your ignition settings are giving you. Much more than 39 to 40 degrees and you can do damage.
Regards
Pete
|
