1985CJ7

Thank You Moses

I am also interested in your findings with the volt meter that will be a interesting experiment. I will be honored to keep you post and appreciate being a part of your fourm. Please also keep us posted with the meter coolant experiment. Looking forward to your findings. Hope your weekend is a great one.

Oh I am aware of the Writings to the subject of diluted coolant and I would never doubt those writings. However I have used the method of non diluted coolant for 15 plus years with no cracked blocks, overheating and no noticeable corrosion at all. Something else I failed to mention was how clean and deposit free the water jackets have been on engines I have overhauled. I know publication and instructions say the opposite but as someone who has used this method it work and well. I only suggest you try it just once. You will not be disappointed. I have discussed the method with more mechanics than I can recall and to this day only 3 have tried it will no ill effects. For example I have a old car I bought with a bad water pump I used the method with it 14 years ago. I have not even changed the coolant (mostly to see how long the car would hold up). I check the temperature rating every year with no change. The car is now driven by by grand daughter and the last time I looked it has 428,000 miles on it. I am not telling this to be a smartass but to possibly help others and share what my grandfather taught me. As far as electrolysis is concerned I dont know but I am willing to bet that glyphosate isn't a better conductor of electricity then water. Infact I would think glyphosate mite be a buffer or insulator from the effects of electrolysis and corrosion of dissimilar metals. Thank you for your time and consideration.

I cleared out the coolant plugs. Filtered some standing antifreeze thru the block and used compressed air from the top passages to push the crud out and there was quite a bit of crud just shy of a cup and a half. Flushed the block until it came out clean and green. I will be putting a coolant filter on the radiator hose like I have on old blue. Planing on a flow kooler pump on there too. On a related topic I for many years have used only green antifreeze with absolutely NO WATER. My granddad a old farmer tought me that. Since I have not used water in my coolant I have never had to replace a water pump, thermostat, cap or radiator. My grandfather used the logic that without water electrolysis is nearly non existent. Unfortunately the last time before now I worked on this jeep was before I put this practice into effect. I have found also the coolant is good to 20-. I have practiced the is in many engines over the past 17 years with no issues. Not sure if that works with newer engines. As far as where I had the bolt I tried wire and finely a punch and lightly taped it. It may have been plugged by a previous owner.

Hi Moses, Thank you. The two brass plugs are ones I put in yesterday I pulled the steel plugs out and put the brass ones in. The rear plug had some pretty nasty stuff come out. I wanted to know if it was a oil gallery or cooling port because I plan to flush the lower part of the block. The substance that cam from the rear hole was rust colored and thick. Didn't smell like oil or coolant. Thank you for your help it is greatly appreciated.

Hello all, While working on the CJ-7 I noticed two plugs on the driver side of the block. Not being able to recall if I had pulled those plugs 20+ years ago when I rebuilt the engine I decided to take a look. From what I found it would appear to be oil gallery access. I was surprised by the amount of rust. At that height it could be the water jacket. After I got cleaned out what I could I put some compressed air to it and of course it just vented into the block. My question is oil gallery or coolant jacket and best way to clean it.