How to cool a cs4 or cs4-i, even better than just bleeding the air pocket.

After finding this rotated my radiator. Noted a definite increase in water flow. Not sure how air could have been in it with 75hrs on it, but it did change. Finally got some longer run times on it today at the range and temps are down also. Haven't took actual readings yet but it's certainly cooler than it's been running just by feel.
Thank y'all 👍
 
Did the flip to my CS4 today. Very easy - trimmed a few inches off the return hose - fan wires were plenty long to rotate. Filled with straight distilled h2o and had leaks at a couple of the connections. Trimmed the end of one line and reconnected - no leaks! Tipped unit front/back & side to side while running & saw some air migrate. Added 8ml of WaterWetter & buttoned it back up.

Tested by refilling my Umarex Zelos wifh 580cc 4500psi bottle. 4500psi fill before flip mod, temp hit 109 degrees at top of cylinder head with ambient air temp around 72. Air temp today was 74 - 0-4500psi took 17min 45sec with a moisture bleed at 11min. Compressor temp at end was the same - 109 degrees. Noticed hour meter was up to 4.5 hours so will inspect grease pot tomorrow to make sure it hasn't self-fed and maybe give it a turn. It was an easy enough mod to try - don't understand why some are seeing positive results and others not.
 
don't understand why some are seeing positive results and others not.
Probably those that don't see any difference didn't have any air in the system before they did the mod. Doing the mod ensures air is automatically bleed out. Without the mod you should rotate the compressor a few times to get all the air out every time the coolant is changed or if the inlet to the pump ever sucks air in.
 
don't understand why some are seeing positive results and others not.
I need to do more testing to be certain, but I think my water temperature went up after the rotate mod. Might have gone up by almost 10 degrees. Like I said though, I need do a few more cycles with it to be certain. Before the mod after one and only one check on a brand new machine I was in the high 90's. After the rotate the water temp was in the 107~108 range, again after only one cycle.
 
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