I had to do this bypass repair before. I do have an accurate numbered temp gauge. My temp stayed more than acceptable during that early summer in OH with the thing bypassed. I only ran it this way for about a month and almost daily. I had my cooler repaired at a welding shop and then reinstalled it with new custom oil cooler lines.

NOTE: my cooling system is a bit different since this was a 617 transplanted into my Unimog.

__________________
"Know other lessons I need to learn? TELL me. Tired of learning'em the hard way".

Glow Plug Wait: [i} Time of silence in homage Rudolph Diesel. Longer you own a diesel. more honor you give". [/i]

Life; SNAFU Situation Normal All Fouled Up, & FUBAR: Fouled Up Beyond All Repair

-Now: Snafued Jeep TJ w/OM617 2Be daily driver & building SS M1079 w/Ambo boxed /live in Adv. Truck, Diesel KLR conversion
-Sold 62 UNIMOG Camper w/617 Turbo, 85 300SD