Hi Thom,
I don't know why points get such a bad rap. When this debate was in full force over on the Healey list I remembered that Peter and Ann Hunt had said they used the standard point setup on their ATW2000 Healey. I contacted Peter and asked him some more questions and the following is his response:
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Hello John,
Good to hear from you -
Re - Healey distributor, points and rotors.
Our ATW2000 Healey is a 1962 BT7 Mk II 2 + 2 Tri-carb w/centre change
gearbox (converted to twin 1.75" SU s' for ease of fitting a foam air
filter)
I sent the distributor, Type DM6, away to our local Lucas agent for a
complete over haul, they in turn, sent it to Holden Vintage & Classic
www.holden.co.uk It came back as new with Lucas points and rotor.
During a very limited running-in period, I had a rotor arm fail.
The points gap were set at .015" when warm with the Champion NY12C plugs set
at .025" gap. The engine compression ratio was reduced to 7.5 : 1 to allow
for low Octane fuel en-route. Since then I have gone back to the standard 9
: 1 CR still with the same settings. Factory settings were used throughout.
During the whole 20,000 mile home to home trip the engine always started and
did not miss a beat at all. None of the ignition items - plugs, points,
condenser, coil or rotor needed replacing and were not adjusted. I applied
the Golden Rule to British Sports Cars - "If it works, don't fiddle with it"
However - Not too long after we returned, I did have the condenser fail -
simptoms - intermittant mis-fire. In addition, another rotor arm failed. As
a matter of course, I replaced the points and plugs at 25,000 miles.
The only problem on the Open Roads 2002 tour was a breakage in the low
tension lead actually in the distributor, (In Death Valley with the temp. at
120 F + ) this took 20 minutes to fix. 9000 miles round trip in 5 weeks.
To date, XRU100 has covered 35,000 miles with the absolute minimum of
electrical problems.
My other Healey, a '63 Mk II BJ7, owned since 1969, gave no problems up
until she was laid up for an 8 year period 1989/97 with no attention. Basic
ignition items and rubber seals had to be replaced and since then I have had
three rotor arms fail. Two within 2,000 miles.
I cannot see the reason to change to electronic ignition on a 1950's design
of car - maybe go to a Mallory distributor if you want to go racing. The
Lucas distributor is very easy to service and set up correctly.
Rotor Arms are giving a lot of problems as they can fail with no warning at
all and with no physical sign of damage. Is this happening to owners of
other British Sports Cars that use the Healey Lucas range of distributors? I
have heard that a more robust model of rotor arm that fits the Healey
distributors is not giving the same problems but I do not know the model
number - any ideas?
Motto - carry several spares.
By all means pass on all, or part, of above - Hope it helps.
Regards,
Peter