I tackled a problem I was having with coolant temps running hotter than I like. This has been been plaguing me since I bought the Jeep. I replaced the (Ron Davis $$) radiator due to a hair line crack about a year ago. My hopes of that fixing the problem did not come to fruition!. Next, I thought maybe the trans was overheating and transferring to the AC condenser and then the radiator. I had the trans rebuilt and same issue, still running hot.
Not "overheating" hot but not where I like it. On a steep grade (freeway) it would climb to 230f and then on decent, go down to 185f (fairly fast). Crawling in 100f heat, no issues, 190 all day. So it was a flow issue I assumed.
Fast forward to a week ago. I pulled the old school tube a fin cooler that was smack in the middle of the radiator. It was not only "inefficient" but plugged with dirt on the lower half between the cooler and condenser. First improvement. Next I added two 13 row "stacked plate" coolers. These are much more efficient. They flow more air between the plates and have a much smaller footprint. I was able to put the new coolers vertical and right on a grill gap/intake. The net gain (or delta?) was 9 degrees on the same freeway grade at the same spot. I was also doing 9mph faster on the "good" test. Another thing I noticed was the temp hit 119 sooner but never climbed after that. The pre test would continually rise. The only reason I topped at 228f on the pre test was I ran out of grade to climb.
I used -8an hose through out. It looks good. For the trans exit fittings, I decided to leave them hooked up and un molested. Just looked like a hassle, clips, orings, leaks etc. For the adapter I used a 3/8 compression to -8an fitting like this:
I put a tiny amount of oil resistant silicone on the ferrule before I tightened on the ferrule. Not sure if it helped but there are no leaks anywhere (as of yet lol).
Here is a couple of pics of the test on my ScanGauge III:
I will post some project pics a little later today. I have to go back to work before anyone catches my goofing off.
Not "overheating" hot but not where I like it. On a steep grade (freeway) it would climb to 230f and then on decent, go down to 185f (fairly fast). Crawling in 100f heat, no issues, 190 all day. So it was a flow issue I assumed.
Fast forward to a week ago. I pulled the old school tube a fin cooler that was smack in the middle of the radiator. It was not only "inefficient" but plugged with dirt on the lower half between the cooler and condenser. First improvement. Next I added two 13 row "stacked plate" coolers. These are much more efficient. They flow more air between the plates and have a much smaller footprint. I was able to put the new coolers vertical and right on a grill gap/intake. The net gain (or delta?) was 9 degrees on the same freeway grade at the same spot. I was also doing 9mph faster on the "good" test. Another thing I noticed was the temp hit 119 sooner but never climbed after that. The pre test would continually rise. The only reason I topped at 228f on the pre test was I ran out of grade to climb.
I used -8an hose through out. It looks good. For the trans exit fittings, I decided to leave them hooked up and un molested. Just looked like a hassle, clips, orings, leaks etc. For the adapter I used a 3/8 compression to -8an fitting like this:
I put a tiny amount of oil resistant silicone on the ferrule before I tightened on the ferrule. Not sure if it helped but there are no leaks anywhere (as of yet lol).
Here is a couple of pics of the test on my ScanGauge III:
I will post some project pics a little later today. I have to go back to work before anyone catches my goofing off.
