I purchased a BEGI coolant reroute a while back and I'm now installing it. I have removed the heater core completely from the car. I don't see any reason to keep the tube on the hot side of the engine that goes to the heater core...
if the lines have nothing to go to. They give me an option to put a barb on the reroute spacer to plug this heater core line into, but is there a reason? My idea was to just weld shut the bit where the hard pipe enters the mixing manifold and just have my route go from the radiator, into the mixing manifold, through the engine and out the back going back into the radiator.. Would this work fine? In that case, I would just cap off the place to put a barb on the spacer.. Hopefully this isn't too confusing.

 

keep in mind when the stat is closed the water has nowhere to go when those are blocked off

 

Very common. Weld the mixing manifold shut where the hard pipe enters. Plug the NPT threads in the spacer instead of using the barb. Then drill a ~1/4" bypass hole in your thermostat flange for cold operation water flow. You can also at that point plug any of the "baby hoses" (5/16"), and flip the mixing manifold so it points forward. This gives you more room for turbos and such. A simple "J" shaped radiator hose is required for the lower hose.

 

I was about to mention drilling the stat but Curly got this

 

By baby hoses, do you mean the ones that come from the throttle body?

 

Would that not - then delete or make the oil cooler inactive?

 

Yes it would. I've gotten rid of it on my builds, ymmv.

 

At what point is it --not-- okay to delete the oil cooler? It seems to be a fairly split subject. (I'll be running the TSE EFR6578 kit.)

 

There ain't much cooling going on with that thing, it's too small, the water is at 200 deg already so with a 50 to 75 degree temp Delta it's barely a drop in the bucket.

 

Its not meant to cool the oil so much as warm it. Oil being too cold is just as dangerous as too hot. Since the coolant comes up to temp in a few minutes, it circulates by the oil filter to help bring the oil up to temp as well. And once it's really hot, it is supposed to help cool it, but as Bronson said, the BEST it can do is bring it down close to 200.

Deleting it is as simple as not plumbing water lines to it. If you actually want to remove it, you'd need the threaded filter stud from a 1.6.

 

Is there an ots mixing valve without the 'baby hoses'? Kia, etc...

 

Just pull out the barb and drill and tap it for 1/8npt, or weld it shut. Otherwise, no there's no off the shelf piece.