On my 67 MGB, I set the ignition statically (sp?). I am pretty confident
about the job I did there, the timing is set to spec. I am now getting about
27.5 mpg on the highway at 70 mph in with the overdrive on. Now here's the
question. In 2nd and 3rd gear, under hard acceleration, I get knocking at
4000 rpm and above (actually I think the tach reads high, but it says 4000
when the knock starts). My distributor was suposedly rebuilt about 2 yrs
ago, so the weights and springs should be good (that is if I trust my
mechanic, which I do). Should I retard the timing from the spec., should I
live with the noise, or should I check my mechanic's rebuild job? The engine
has not been overheating while running at highway speeds, so I am not too
concerned yet, just really annoyed with the knocking. Anyone have
suggetions?
Phil Bates
67 MGB
75 Jaguar XJ12C
52 MG TD replicar (VW)
|