Gen 3 2002 Montero head gasket

[spacecowboy7777]

Cooling system building pressure and blowing out the overflow. Exhaust gasses coming into it. It changed the color of the test fluid almost immediately. Going to tackle this myself. So far, I'm ordering:

Aisin timing belt kit
Aisin tensioner
front crank shaft oil seal
2 x camshaft seals
2 x rear heater hose Tee joints
2 x large coolant pipe o-rings
2 x coolant crossover pipes
cylinder head cover gaskets
mitsubishi timing belt tensioner tool

Mahle head gasket kit

Anything I'm missing? I'd appreciate any helpful information. I do plan on taking the heads to a machine shop to make sure they're not warped. I had a shop supposedly "rebuild" the heads like 4 years ago, maybe 30,000 miles ago, but obviously I don't trust their work now. New radiator at the time too along with lifters, etc.

 

[Michael Brown]

Others may have some insight as well.
I did my timing ~6 years ago, so it has been awhile.

I used RockAuto and PartSouq for these parts.
Denso is usually OEM for sensors, but PartSouq carries a lot of OEM parts.
Most people recommended OEM for Cam/Crank sensors to swap while you're in there.

I think it was Fel-Pro that has gasket issues, but can't remember.
I used Mahle or OEM the last time I did it.

Get the small o-ring for the pipe that goes into the back of the water pump, if you haven't already.
It is shared with other models like the EVO 2.0L, so they are readily available.

Watch some videos on the Mitsubishi/Chrysler V6 Timing belt job. Key part is that the water pump is part of the system.
Leave its bolts loose while you setup the timing belt and set timing marks. Tighten them once everything is good.

Also grab some cheap poster board paper. Draw a general layout of the drive belt and timing belt systems.
Poke holes in them for where bolts go. They were all different lengths IIRC. This made it easier when I put everything back together.