Context is everything. What I said, was a reply in the context of "You don't need a relay" and my answer was to that context. If you don't have a relay
SOMEPLACE then you need to look at the rating on the starter switch versus the load on the starter.
I think we've both misspoke here, when you say "140 amps goes thru the starter solenoid" I really doubt that. The solenoid--the throwout aka Bendix--does NOT carry the full load of the starter motor
. That 140 Amps is being supplied to the motor's windings, and only a fraction (a couple of amps) goes to move the solenoid itself. The solenoid only bumps the starter motor
against the flywheel so they are connected during starting. The bulk of the current goes only to the starter motor windings--not the solenoid.
And in order to apply that current to the starter motor, a RELAY is used. The relay normally applies power to both the motor and the solenoid at the same time. The original question was whether a failure-prone additional part (the relay) was needed or not.
The answer to this was and still is, a relay is necessary OR ELSE the starter button has be rated to supply the full current load to the starter, motor windings and solenoid together.
AFAIK, there is always one relay supplying power to both the solenoid and motor windings, whether it is called the starter solenoid relay or starter relay depends on which maker is doing the calling.