I currently have 3/8 hard lines for hot water under my intake. Supply out of the head, suction I added a port in the water pump. Works great.
I tried using exhaust gas through the 3/8 lines like you are doing but it did not provide much heat at all. Sharing my experience. Vaporizing fuel absorbs a lot of heat.
Last edited by strokersix; 09/15/22 01:27 PM.
