Ok so i just realized that theres is a hole on the bottom of the tstat housing, for a sensor or something..? Its pissing out antifreeze

 

That is for the Evo IX coolant bypass that goes into the larger water pipe that runs behind the engine. If you have an Evo VIII then you need the VIII thermostat housing. If this is on another vehicle and you don't have the IX water pipe then you will need one or just switch to the VIII t-stat housing. I have one if you need one shipped quickly. Check out my For Sale thread here:
https://www.evolutionm.net/forums/sa...nds-stuff.html

Josh

 

What is the piece called that goes into the t stat housing?

 

Or do you mean the rear water pipe itself comes around at bolts to the t stat?

 

n.m

 

Found a pic of a evo 9 rear water pipe it seems to have a piece that goes up where the hole in the t stat is. Im gonna tape the hole and plug it, problem solved.

 

that works too! LOL or you could trade me for one of my stock VIII t-stat housings. PM me if you want to work something out.

Josh