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1. 

   1997 - fzj80 Cooling System Baseline Question - Water Inlet/Outlet

   ^x2. Same here. Opinions vary. I will say, just for the sake of nearly repeating myself, if you choose to do this with the head on, and without draining the coolant, cover the engine/transmission harness junction connectors BEFORE you open the coolant system. If you don't, you'll wish you...

   • Words: 64
   • Malleus
   • Post #13
   • Jul 21, 2022
   • Forum: 80-Series Tech
2. 

   1997 - fzj80 Cooling System Baseline Question - Water Inlet/Outlet

   I'd replace the two lower head connected hoses, unless you know they have been replaced with good hose (Toyota or otherwise), and clamps, recently. Especially important is the rear bypass hose, because when it leaks, it leaks onto the junction connector from the engine harness to the...

   • Words: 120
   • Malleus
   • Post #6
   • Jul 20, 2022
   • Forum: 80-Series Tech
3. 

   1997 - fzj80 Cooling System Baseline Question - Water Inlet/Outlet

   FWIW, that head coolant bypass hose (aka PHH) only starts to leak after 30 years. Pretty good life expectancy, if you ask me. Unless you plan to drive it for another 40 years, just put back what Toyota installed at the factory. You'll be fine. If you do plan to drive it another 30+ years...

   • Words: 230
   • Malleus
   • Post #4
   • Jul 20, 2022
   • Forum: 80-Series Tech