Talk Morgan Forums Thread Like Summary - Starter issue

General query for the Collective Wisdom.

Took my MG Midget for a shakedown trackday at Knockhill on Sunday ... ran very well ... had one odd minor issue ... starter whizzed the engine over when cold .... but after a series of hard laps could hardly turn it when hot ... the hot engine sounds smooth and sweet and settles to a steady normal tickover so I'm fairly sure it's not getting 'tight' ... and after cooling down it starts on the button next time' ..... any thoughts?

K

Ps ... by 'hot' I mean normal running temperature

Another idea that I’ve seen on an MGB. Starter and pinion ring gears wear especially on their leading edges creating high spots. When hot the high spots caused the gears to mesh too tightly. I theory the starter has a fixed location but I found loosening the mounting bolts and re fixing the whilst applying a little outward pressure to the starter gave just a tiny amount of free play and solved the problem. Similar method to tightening a fan belt but attempting to reduce pressure rather than creat it. Worked for me.