Thread: Block cleaning
View Single Post
Old 04-12-2017, 11:30 PM   #3
daveymc29
Senior Member
 
daveymc29's Avatar
 
Join Date: Sep 2010
Location: Danville, CA
Posts: 1,554
Default Re: Block cleaning

I used vinegar and let it sit a month, then back flushed the block only, then the radiator only. Lots of rust came out and I refilled with water and a cup of baking soda. Ran it a day or two and repeated the flushing, then did it again. After the third flushing I filled the works with 50/50 antifreeze. I also installed a 160 degree thermostat in the upper hose, just above the water pump. (S0 far it hasn't moved) I had soldered the stat to a rolled piece of copper that I had made into a 1.5 inch pipe just barely able to pound into the hose. Seems to be working fine and so far no rust appearing in the antifreeze.Temperature after running a half hour or so is slightly higher than it was without the thermostat, but just about 180 in the upper hose above the thermostat. Usually 165 on the lower hose.
daveymc29 is offline   Reply With Quote