I am in the 123 camp...
I am using two of the 123/tune version and I consider these to be one of the
best value "tuning parts" that I have ever bought. I could literally watch more
power appearing on the dyno each time the curve was edited...
rich@minispares.com wrote:use standard, cheap and easy to get lucas caps and arms
MY VIEW AND SHARED BY SOME OTHERS
... cheap, and rubbish/unreliable, especially the rotor arms which are now made
from a special electrically conductive non-bakerlite material. Many of the official
"Lucas" boxed parts have been known to fail with alarming frequency.
NOT TO BE CONFUSED WITH THE DISTRIBUTOR DOCTOR "RED" TYPE ARM,
WHICH, IN MY CASE ON ANOTHER CAR, PROVIDED AN INSTANT CURE.
rich@minispares.com wrote:- try finding a bosch cap and arm in an emergency!!!
Agreed, which is the reason why I bought a spare arm and cap for each car
and carry them in the toolkit...
Another consideration: Unless you really do drive with your foot flat on the floor
100% of the time, a distributor with a vacuum advance is my recommendation.
If you have a vacuum distributor and are going "flat-out", it will not be affecting
the advance curve anyway, so there should be no harm in having this version.
Ian