I have 2 1998 TAMD73 Engines in a Navigator 53. They have about 2,000 hours.
* both surveyed by Volvo tech 18 months ago @ purchase
- port temps 170-175
- stb temps 170-180
- no issues of any kind
* I´ve put about 400 hours on the engines in last 18 months, 90% at low (1400) rpm
* I...