starter motor rooted?

I'm at the turn key stage of a full revamp of the ignition system.
I'm getting code 55, but the motor won't crank.
The noise I hear is similar to a electric arc welder with a stuck rod.
If the starter solenoid throws the shaft out, but there is a short in the high current side of the starter, will I get these symptoms?

 

Can you give a description of the noise another way ?

 

ot sure if it's relevant or not, I've never taken a Z32 starter apart, but it might be a similar issue to what I had with my R31?

 

https://www.youtube.com/watch?v=bud6elOBgnE
Youtube'd it. Sounds more electrical than mechanical, if that makes sense.

 

it would be quicker to give it your friendly auto elect and he'll test it for you on the spot

 

My old zed had this happen, was the starter motor, replaced with a good one and off it went.