im finding large deposits of corrosion around the inside of some cooling system parts. i know this is from regular tap water. but does anyone have a good method of getting this stuff out? maybe like something i could let the parts soak in?

 

Want to experiment? I was thinking about setting this up after my bare metal project on the 2runner (2nd generation). There are two steps.

step one: Harris International Labs product
http://www.evaporust.com/evaporustcsc.html

step two: Cortec Corporation product
http://www.rustbloc.com/cgi-bin/dept?dpt=H&srch=BD

Evaporust rust remover has made it to my, hard to get on, RECOMMEND list. I have tried it and it works well. I have not tried the radiator flush but I have added it to my TRY list.

I have not tried any of the BullFrog products but they come highly recommended. They are on my TRY list.

I would go for two sessions with the evaporust and then follow up with the BullFrog*

*The only research I still need to conduct is what coolant/antifreeze to go with. I'm looking at a Shell-Lubricants product, Rotella ELC sourced from SOPUS Products :

http://74.125.155.132/search?q=cache...&ct=clnk&gl=us

...buts thats just a starting point for my research log.

 

JUST KIDDING... unless that really works...

 

If you have alot of corrosion then the best thing to do is pull the radiator and take it to a shop and have it cleaned out, replace the water pump and thermostat and you should be alright after that.

 

I would just assume replace the rad for the $110 (+ - $20) it cost for an OEM style replacement...

 

True, there not that much and it probably cost as much to have it cleaned out at a radiator shop as to replace it.

 

my radiator is clean. the parts i am referring to are my water inlet pieces and some other areas around the water jacket in the lower intake manifold

 

Flush it with water and refill with a 50/50 mix of distilled water (if the water is hard in your area) and toyota red or pink coolant.

 

The water jacket(S) in the lower intake are a return to the radiator via the thermostat and the supply to the heater.
If you've got mild deposits building up, a cooling system flush may take care of it. If it's severe, then more aggressive cleaning is needed... and that might mean several coolant flushes....

Nevermind... just realized it's a 3VZE... similar concept but I'm not an authority on the V6