31-12-2022, 06:53 PM
Andrew Ruby's recent post about a mystery engine ailment and John Cornforth's suggestion that distributor not advancing correctly might be a cause has got me pondering further on the noise of my 3 bearing Ruby engine.
At higher revs, e.g above 40 mph in top gear the engine becomes decidedly noisier.
Could the distributor not advancing correctly be a cause of the noise?
I know that the distributor is only giving about 5 degrees of advance because the holes for the weight pivot pins have become a bit oval. I have set the timing to give good uphill performance at 30 mph in top gear, so the timing may not be correctly advanced for speed above 40 mph.
The reason for not correcting the ovality of the pivot pin holes is that I couldn't punch out the pin that holds the pinion gear to the distributor shaft. Is there a good technique for doing this?
At higher revs, e.g above 40 mph in top gear the engine becomes decidedly noisier.
Could the distributor not advancing correctly be a cause of the noise?
I know that the distributor is only giving about 5 degrees of advance because the holes for the weight pivot pins have become a bit oval. I have set the timing to give good uphill performance at 30 mph in top gear, so the timing may not be correctly advanced for speed above 40 mph.
The reason for not correcting the ovality of the pivot pin holes is that I couldn't punch out the pin that holds the pinion gear to the distributor shaft. Is there a good technique for doing this?