normal operating temps for a 1975 450SL?

[domchang]

Hello

Would like to know at what temp does your 1975 or close to that year model 450SL run at normally?

My concern is that mine runs normally at around 175, I realize that the catalytic converters in the engine compartment don't help things in terms of temperatures but need to know if others with same engine are seeing same temps as well.

I believe the high heat is whats causing the vapor locking symptoms mentioned elsewhere in the forum. Symptoms such as hard starts when engine is warm but not when cold.

thanks in advance

dom