12HT cooling line question (1 Viewer)

[CenTXFJ60]

Putting this in a 55 for someone. Not running heat out of the gate so verifying what to do with these three ports. I believe the back one on the head goes to the heater so can I block it off? Then can I loop the other two together? Thanks for your feedback.

 

[duncanrm]

This setup is for 60 with 2 heater cores.. the rear heater for the back seats and the main heater core for the front seats.

The rear riser out of the head is for the rear heater core. But there's a bit of a mixing arrangement as well in the subsequent plumbing.

When I removed my rear heater core in my 60 I capped off the rear one (with a brass plug into the head). You can safely loop the other two together if you're not running a heater core.

 

[CenTXFJ60]

Yep. I looked at my 12ht in my 60 and could see the routing. About to put some red in it as I type . Really appreciate your response.