S2A, I've done a light restoration including many of the wires and the earths are generally good throughout. It's been parked up for a couple of weeks.
This morning, excited to drive to work without the need for an MOT, I jumped in it and it was very slow to turn. After cranking in three bursts for a minutes or so, I stuck my head under the bonnet and smelled hot electrics. The starter motor itself was warm, but the thick wires running to it were too hot to touch.
Suggestions please, from your experience:
A) Replace the thick wires either side of the starter switch? (Degraded/high resistance?)
B) "It's an earthing problem"
C) Something else?
I'm thinking #1 as the heat is building in the wires. It shouldn't do that if it's an earthing or motor problem, surely?
Thanks
(Relevent things)
The battery is new and has plenty of punch.
I've had the starter motor out and serviced it. Plenty of meat left on the brushes, the commutator is clean and it spins very fast on the bench.
Original 1965 2.25 petrol with dynamo.
A volt meter off the ignition switch reads 10v idle, dropping to 8v when cranking. Jumping to 14 when running. Battery reading 13v
I've recently replaced the head gasket and replaced a cracked head with an identical one off a S3.
I've filled with 20w50 oil. (Was starting easier with 15w40 but that was before the head was done, so much less compression)
This morning, excited to drive to work without the need for an MOT, I jumped in it and it was very slow to turn. After cranking in three bursts for a minutes or so, I stuck my head under the bonnet and smelled hot electrics. The starter motor itself was warm, but the thick wires running to it were too hot to touch.
Suggestions please, from your experience:
A) Replace the thick wires either side of the starter switch? (Degraded/high resistance?)
B) "It's an earthing problem"
C) Something else?
I'm thinking #1 as the heat is building in the wires. It shouldn't do that if it's an earthing or motor problem, surely?
Thanks
(Relevent things)
The battery is new and has plenty of punch.
I've had the starter motor out and serviced it. Plenty of meat left on the brushes, the commutator is clean and it spins very fast on the bench.
Original 1965 2.25 petrol with dynamo.
A volt meter off the ignition switch reads 10v idle, dropping to 8v when cranking. Jumping to 14 when running. Battery reading 13v
I've recently replaced the head gasket and replaced a cracked head with an identical one off a S3.
I've filled with 20w50 oil. (Was starting easier with 15w40 but that was before the head was done, so much less compression)